/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_safe005_tso_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:37:38,671 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:37:38,746 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:37:38,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:37:38,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:37:38,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:37:38,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:37:38,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:37:38,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:37:38,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:37:38,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:37:38,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:37:38,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:37:38,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:37:38,774 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:37:38,775 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:37:38,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:37:38,778 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:37:38,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:37:38,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:37:38,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:37:38,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:37:38,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:37:38,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:37:38,782 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:37:38,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:37:38,783 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:37:38,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:37:38,783 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:37:38,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:37:38,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:37:38,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:37:38,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:37:38,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:37:38,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:37:38,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:37:38,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:37:38,786 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:37:38,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:37:38,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:37:38,786 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:37:38,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:37:38,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:37:38,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:37:38,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:37:38,998 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:37:38,998 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:37:38,999 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe005_tso_bound2.i [2023-08-04 06:37:40,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:37:40,523 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:37:40,523 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe005_tso_bound2.i [2023-08-04 06:37:40,540 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9355ccde6/ab8d9b6d318644ea89c5e7fa91a3f0ca/FLAG0e67b08c7 [2023-08-04 06:37:40,555 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9355ccde6/ab8d9b6d318644ea89c5e7fa91a3f0ca [2023-08-04 06:37:40,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:37:40,561 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:37:40,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:37:40,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:37:40,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:37:40,568 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:37:40" (1/1) ... [2023-08-04 06:37:40,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae0e21b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:40, skipping insertion in model container [2023-08-04 06:37:40,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:37:40" (1/1) ... [2023-08-04 06:37:40,625 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:37:40,811 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_safe005_tso_bound2.i[945,958] [2023-08-04 06:37:40,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:37:40,989 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:37:40,999 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_safe005_tso_bound2.i[945,958] [2023-08-04 06:37:41,005 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:37:41,007 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:37:41,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:37:41,062 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:37:41,063 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:37:41,069 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:37:41,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41 WrapperNode [2023-08-04 06:37:41,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:37:41,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:37:41,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:37:41,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:37:41,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (1/1) ... [2023-08-04 06:37:41,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (1/1) ... [2023-08-04 06:37:41,111 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-08-04 06:37:41,111 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:37:41,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:37:41,112 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:37:41,112 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:37:41,120 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (1/1) ... [2023-08-04 06:37:41,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (1/1) ... [2023-08-04 06:37:41,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (1/1) ... [2023-08-04 06:37:41,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (1/1) ... [2023-08-04 06:37:41,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (1/1) ... [2023-08-04 06:37:41,132 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (1/1) ... [2023-08-04 06:37:41,134 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (1/1) ... [2023-08-04 06:37:41,135 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (1/1) ... [2023-08-04 06:37:41,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:37:41,138 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:37:41,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:37:41,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:37:41,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (1/1) ... [2023-08-04 06:37:41,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:37:41,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:37:41,174 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 06:37:41,197 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 06:37:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:37:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:37:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:37:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:37:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:37:41,215 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:37:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:37:41,215 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:37:41,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:37:41,216 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:37:41,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:37:41,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:37:41,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:37:41,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:37:41,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:37:41,217 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 06:37:41,377 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:37:41,379 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:37:41,564 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:37:41,570 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:37:41,570 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 06:37:41,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:37:41 BoogieIcfgContainer [2023-08-04 06:37:41,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:37:41,575 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:37:41,575 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:37:41,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:37:41,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:37:40" (1/3) ... [2023-08-04 06:37:41,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1175aca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:37:41, skipping insertion in model container [2023-08-04 06:37:41,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:37:41" (2/3) ... [2023-08-04 06:37:41,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1175aca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:37:41, skipping insertion in model container [2023-08-04 06:37:41,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:37:41" (3/3) ... [2023-08-04 06:37:41,580 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe005_tso_bound2.i [2023-08-04 06:37:41,587 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:37:41,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:37:41,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 06:37:41,597 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:37:41,644 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:37:41,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 06:37:41,809 INFO L124 PetriNetUnfolderBase]: 30/414 cut-off events. [2023-08-04 06:37:41,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:37:41,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 414 events. 30/414 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1853 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 243. Up to 16 conditions per place. [2023-08-04 06:37:41,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 06:37:41,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 91 transitions, 191 flow [2023-08-04 06:37:41,831 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:37:41,848 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 91 transitions, 191 flow [2023-08-04 06:37:41,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 91 transitions, 191 flow [2023-08-04 06:37:41,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 91 transitions, 191 flow [2023-08-04 06:37:41,918 INFO L124 PetriNetUnfolderBase]: 22/311 cut-off events. [2023-08-04 06:37:41,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:37:41,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 311 events. 22/311 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1253 event pairs, 0 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 189. Up to 16 conditions per place. [2023-08-04 06:37:41,923 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2023-08-04 06:37:43,833 INFO L134 LiptonReduction]: Checked pairs total: 2845 [2023-08-04 06:37:43,833 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-04 06:37:43,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:37:43,866 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;@2b67fa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:37:43,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 06:37:43,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:37:43,874 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 06:37:43,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:37:43,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:37:43,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:37:43,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:37:43,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:37:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash 356449654, now seen corresponding path program 1 times [2023-08-04 06:37:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:37:43,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729234827] [2023-08-04 06:37:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:43,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:37:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:44,075 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 06:37:44,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:37:44,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729234827] [2023-08-04 06:37:44,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729234827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:37:44,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:37:44,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:37:44,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785998989] [2023-08-04 06:37:44,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:37:44,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:37:44,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:37:44,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:37:44,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:37:44,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2023-08-04 06:37:44,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 06:37:44,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:37:44,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2023-08-04 06:37:44,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:37:44,254 INFO L124 PetriNetUnfolderBase]: 400/736 cut-off events. [2023-08-04 06:37:44,255 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:37:44,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1445 conditions, 736 events. 400/736 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3719 event pairs, 222 based on Foata normal form. 0/670 useless extension candidates. Maximal degree in co-relation 1432. Up to 668 conditions per place. [2023-08-04 06:37:44,262 INFO L140 encePairwiseOnDemand]: 178/182 looper letters, 20 selfloop transitions, 2 changer transitions 1/26 dead transitions. [2023-08-04 06:37:44,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 107 flow [2023-08-04 06:37:44,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:37:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:37:44,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-08-04 06:37:44,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567765567765568 [2023-08-04 06:37:44,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-08-04 06:37:44,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-08-04 06:37:44,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:37:44,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-08-04 06:37:44,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 06:37:44,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 06:37:44,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 06:37:44,290 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 57 flow. Second operand 3 states and 304 transitions. [2023-08-04 06:37:44,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 107 flow [2023-08-04 06:37:44,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:37:44,294 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 63 flow [2023-08-04 06:37:44,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-04 06:37:44,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-04 06:37:44,299 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 63 flow [2023-08-04 06:37:44,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 06:37:44,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:37:44,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:37:44,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:37:44,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:37:44,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:37:44,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1087985545, now seen corresponding path program 1 times [2023-08-04 06:37:44,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:37:44,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512671528] [2023-08-04 06:37:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:44,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:37:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:44,384 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 06:37:44,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:37:44,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512671528] [2023-08-04 06:37:44,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512671528] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:37:44,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156628014] [2023-08-04 06:37:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:44,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:37:44,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:37:44,389 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 06:37:44,406 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 06:37:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:44,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:37:44,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:37:44,507 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 06:37:44,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:37:44,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156628014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:37:44,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:37:44,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:37:44,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655368773] [2023-08-04 06:37:44,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:37:44,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:37:44,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:37:44,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:37:44,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:37:44,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2023-08-04 06:37:44,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 06:37:44,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:37:44,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2023-08-04 06:37:44,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:37:44,602 INFO L124 PetriNetUnfolderBase]: 338/604 cut-off events. [2023-08-04 06:37:44,602 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 06:37:44,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 604 events. 338/604 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2732 event pairs, 262 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 1184. Up to 529 conditions per place. [2023-08-04 06:37:44,607 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 22 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2023-08-04 06:37:44,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 123 flow [2023-08-04 06:37:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:37:44,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:37:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-08-04 06:37:44,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5586080586080586 [2023-08-04 06:37:44,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-08-04 06:37:44,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-08-04 06:37:44,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:37:44,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-08-04 06:37:44,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 06:37:44,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 06:37:44,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 06:37:44,614 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 63 flow. Second operand 3 states and 305 transitions. [2023-08-04 06:37:44,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 123 flow [2023-08-04 06:37:44,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:37:44,615 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 67 flow [2023-08-04 06:37:44,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-08-04 06:37:44,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2023-08-04 06:37:44,616 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 67 flow [2023-08-04 06:37:44,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 06:37:44,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:37:44,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:37:44,625 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 06:37:44,822 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 06:37:44,823 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:37:44,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:37:44,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1614153841, now seen corresponding path program 1 times [2023-08-04 06:37:44,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:37:44,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352827672] [2023-08-04 06:37:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:44,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:37:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:44,900 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 06:37:44,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:37:44,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352827672] [2023-08-04 06:37:44,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352827672] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:37:44,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855191381] [2023-08-04 06:37:44,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:44,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:37:44,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:37:44,902 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 06:37:44,915 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 06:37:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:44,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:37:44,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:37:44,988 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 06:37:44,988 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:37:44,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855191381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:37:44,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:37:44,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:37:44,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913494343] [2023-08-04 06:37:44,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:37:44,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:37:44,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:37:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:37:44,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:37:45,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2023-08-04 06:37:45,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 06:37:45,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:37:45,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2023-08-04 06:37:45,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:37:45,091 INFO L124 PetriNetUnfolderBase]: 314/526 cut-off events. [2023-08-04 06:37:45,091 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-04 06:37:45,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 526 events. 314/526 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2315 event pairs, 182 based on Foata normal form. 0/495 useless extension candidates. Maximal degree in co-relation 1091. Up to 407 conditions per place. [2023-08-04 06:37:45,094 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 24 selfloop transitions, 2 changer transitions 1/30 dead transitions. [2023-08-04 06:37:45,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 135 flow [2023-08-04 06:37:45,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:37:45,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:37:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-04 06:37:45,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622710622710623 [2023-08-04 06:37:45,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-04 06:37:45,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-04 06:37:45,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:37:45,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-04 06:37:45,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 06:37:45,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 06:37:45,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 06:37:45,100 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 67 flow. Second operand 3 states and 307 transitions. [2023-08-04 06:37:45,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 135 flow [2023-08-04 06:37:45,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:37:45,102 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 71 flow [2023-08-04 06:37:45,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-08-04 06:37:45,103 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-04 06:37:45,104 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 71 flow [2023-08-04 06:37:45,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 06:37:45,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:37:45,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:37:45,113 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 06:37:45,313 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 06:37:45,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:37:45,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:37:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash 782053036, now seen corresponding path program 1 times [2023-08-04 06:37:45,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:37:45,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760324928] [2023-08-04 06:37:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:45,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:37:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:37:45,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:37:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760324928] [2023-08-04 06:37:45,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760324928] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:37:45,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792201070] [2023-08-04 06:37:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:45,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:37:45,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:37:45,402 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 06:37:45,418 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 06:37:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:45,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:37:45,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:37:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:37:45,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:37:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:37:45,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792201070] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:37:45,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:37:45,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:37:45,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956360313] [2023-08-04 06:37:45,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:37:45,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:37:45,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:37:45,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:37:45,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:37:45,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2023-08-04 06:37:45,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 06:37:45,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:37:45,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2023-08-04 06:37:45,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:37:45,584 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 06:37:45,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:37:45,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 4/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 06:37:45,591 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 06:37:45,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 43 flow [2023-08-04 06:37:45,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:37:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:37:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2023-08-04 06:37:45,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2023-08-04 06:37:45,594 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2023-08-04 06:37:45,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2023-08-04 06:37:45,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:37:45,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2023-08-04 06:37:45,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:37:45,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 06:37:45,598 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 06:37:45,598 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 71 flow. Second operand 4 states and 378 transitions. [2023-08-04 06:37:45,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 43 flow [2023-08-04 06:37:45,599 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 06:37:45,599 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 06:37:45,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, 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 06:37:45,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -12 predicate places. [2023-08-04 06:37:45,601 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 06:37:45,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 06:37:45,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 06:37:45,615 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 06:37:45,811 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 06:37:45,811 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:37:45,813 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 06:37:45,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 06:37:45,844 INFO L124 PetriNetUnfolderBase]: 30/414 cut-off events. [2023-08-04 06:37:45,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:37:45,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 414 events. 30/414 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1853 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 243. Up to 16 conditions per place. [2023-08-04 06:37:45,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 06:37:45,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 78 transitions, 171 flow [2023-08-04 06:37:45,846 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:37:45,846 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 78 transitions, 171 flow [2023-08-04 06:37:45,846 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 78 transitions, 171 flow [2023-08-04 06:37:45,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 78 transitions, 171 flow [2023-08-04 06:37:45,858 INFO L124 PetriNetUnfolderBase]: 6/190 cut-off events. [2023-08-04 06:37:45,859 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:37:45,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 190 events. 6/190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 587 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-04 06:37:45,861 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2023-08-04 06:37:47,360 INFO L134 LiptonReduction]: Checked pairs total: 2116 [2023-08-04 06:37:47,360 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-04 06:37:47,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:37:47,363 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;@2b67fa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:37:47,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:37:47,365 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:37:47,365 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-08-04 06:37:47,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:37:47,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:37:47,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 06:37:47,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 06:37:47,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:37:47,366 INFO L85 PathProgramCache]: Analyzing trace with hash -56060982, now seen corresponding path program 1 times [2023-08-04 06:37:47,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:37:47,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197085965] [2023-08-04 06:37:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:47,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:37:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:47,391 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 06:37:47,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:37:47,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197085965] [2023-08-04 06:37:47,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197085965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:37:47,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:37:47,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:37:47,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906910734] [2023-08-04 06:37:47,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:37:47,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:37:47,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:37:47,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:37:47,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:37:47,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 166 [2023-08-04 06:37:47,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 06:37:47,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:37:47,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 166 [2023-08-04 06:37:47,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:37:47,455 INFO L124 PetriNetUnfolderBase]: 160/340 cut-off events. [2023-08-04 06:37:47,455 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:37:47,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 340 events. 160/340 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1635 event pairs, 78 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 670. Up to 284 conditions per place. [2023-08-04 06:37:47,457 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 18 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-04 06:37:47,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 107 flow [2023-08-04 06:37:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:37:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:37:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-08-04 06:37:47,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024096385542169 [2023-08-04 06:37:47,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-08-04 06:37:47,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-08-04 06:37:47,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:37:47,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-08-04 06:37:47,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 06:37:47,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 06:37:47,461 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 06:37:47,461 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 61 flow. Second operand 3 states and 300 transitions. [2023-08-04 06:37:47,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 107 flow [2023-08-04 06:37:47,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:37:47,462 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 69 flow [2023-08-04 06:37:47,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-04 06:37:47,463 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-04 06:37:47,463 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 69 flow [2023-08-04 06:37:47,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 06:37:47,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:37:47,464 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:37:47,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:37:47,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 06:37:47,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:37:47,465 INFO L85 PathProgramCache]: Analyzing trace with hash -64633540, now seen corresponding path program 1 times [2023-08-04 06:37:47,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:37:47,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296318108] [2023-08-04 06:37:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:47,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:37:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:37:47,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:37:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:37:47,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:37:47,495 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:37:47,495 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 06:37:47,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 06:37:47,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 06:37:47,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 06:37:47,496 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 06:37:47,496 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:37:47,497 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:37:47,497 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:37:47,514 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:37:47,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 127 transitions, 290 flow [2023-08-04 06:37:47,623 INFO L124 PetriNetUnfolderBase]: 93/1304 cut-off events. [2023-08-04 06:37:47,624 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 06:37:47,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 1304 events. 93/1304 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8886 event pairs, 0 based on Foata normal form. 0/1145 useless extension candidates. Maximal degree in co-relation 945. Up to 54 conditions per place. [2023-08-04 06:37:47,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 127 transitions, 290 flow [2023-08-04 06:37:47,631 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 112 transitions, 248 flow [2023-08-04 06:37:47,631 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:37:47,631 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 112 transitions, 248 flow [2023-08-04 06:37:47,632 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 112 transitions, 248 flow [2023-08-04 06:37:47,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 112 transitions, 248 flow [2023-08-04 06:37:47,731 INFO L124 PetriNetUnfolderBase]: 66/967 cut-off events. [2023-08-04 06:37:47,731 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-04 06:37:47,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 967 events. 66/967 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6003 event pairs, 0 based on Foata normal form. 0/862 useless extension candidates. Maximal degree in co-relation 717. Up to 54 conditions per place. [2023-08-04 06:37:47,747 INFO L119 LiptonReduction]: Number of co-enabled transitions 3996 [2023-08-04 06:37:49,487 INFO L134 LiptonReduction]: Checked pairs total: 7661 [2023-08-04 06:37:49,487 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-04 06:37:49,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:37:49,490 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;@2b67fa0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:37:49,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 06:37:49,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:37:49,493 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 06:37:49,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:37:49,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:37:49,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:37:49,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:37:49,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:37:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash 630489879, now seen corresponding path program 1 times [2023-08-04 06:37:49,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:37:49,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700161436] [2023-08-04 06:37:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:49,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:37:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:49,532 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 06:37:49,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:37:49,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700161436] [2023-08-04 06:37:49,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700161436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:37:49,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:37:49,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:37:49,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721376106] [2023-08-04 06:37:49,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:37:49,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:37:49,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:37:49,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:37:49,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:37:49,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 206 [2023-08-04 06:37:49,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states 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 06:37:49,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:37:49,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 206 [2023-08-04 06:37:49,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:37:53,408 INFO L124 PetriNetUnfolderBase]: 33046/47771 cut-off events. [2023-08-04 06:37:53,408 INFO L125 PetriNetUnfolderBase]: For 1425/1425 co-relation queries the response was YES. [2023-08-04 06:37:53,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93162 conditions, 47771 events. 33046/47771 cut-off events. For 1425/1425 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 334227 event pairs, 26064 based on Foata normal form. 0/45433 useless extension candidates. Maximal degree in co-relation 26554. Up to 43520 conditions per place. [2023-08-04 06:37:53,706 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 31 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-04 06:37:53,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 174 flow [2023-08-04 06:37:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:37:53,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:37:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-04 06:37:53,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5938511326860841 [2023-08-04 06:37:53,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-04 06:37:53,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-04 06:37:53,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:37:53,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-04 06:37:53,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 06:37:53,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 06:37:53,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 06:37:53,712 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 100 flow. Second operand 3 states and 367 transitions. [2023-08-04 06:37:53,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 174 flow [2023-08-04 06:37:53,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:37:53,714 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 112 flow [2023-08-04 06:37:53,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2023-08-04 06:37:53,717 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-04 06:37:53,717 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 112 flow [2023-08-04 06:37:53,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states 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 06:37:53,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:37:53,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:37:53,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 06:37:53,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:37:53,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:37:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1300022750, now seen corresponding path program 1 times [2023-08-04 06:37:53,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:37:53,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479358466] [2023-08-04 06:37:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:53,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:37:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:53,762 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 06:37:53,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:37:53,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479358466] [2023-08-04 06:37:53,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479358466] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:37:53,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821554550] [2023-08-04 06:37:53,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:53,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:37:53,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:37:53,765 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 06:37:53,792 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 06:37:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:53,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:37:53,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:37:53,843 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 06:37:53,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:37:53,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821554550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:37:53,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:37:53,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:37:53,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314238143] [2023-08-04 06:37:53,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:37:53,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:37:53,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:37:53,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:37:53,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:37:53,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 206 [2023-08-04 06:37:53,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 06:37:53,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:37:53,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 206 [2023-08-04 06:37:53,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:37:56,583 INFO L124 PetriNetUnfolderBase]: 31406/44873 cut-off events. [2023-08-04 06:37:56,583 INFO L125 PetriNetUnfolderBase]: For 1143/1143 co-relation queries the response was YES. [2023-08-04 06:37:56,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87754 conditions, 44873 events. 31406/44873 cut-off events. For 1143/1143 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 307521 event pairs, 24928 based on Foata normal form. 0/42784 useless extension candidates. Maximal degree in co-relation 87717. Up to 40987 conditions per place. [2023-08-04 06:37:56,825 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 36 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-04 06:37:56,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 204 flow [2023-08-04 06:37:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:37:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:37:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-08-04 06:37:56,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6003236245954693 [2023-08-04 06:37:56,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-08-04 06:37:56,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-08-04 06:37:56,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:37:56,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-08-04 06:37:56,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 06:37:56,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 06:37:56,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 06:37:56,834 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 112 flow. Second operand 3 states and 371 transitions. [2023-08-04 06:37:56,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 204 flow [2023-08-04 06:37:56,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 47 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:37:56,837 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 122 flow [2023-08-04 06:37:56,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-08-04 06:37:56,839 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-08-04 06:37:56,839 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 122 flow [2023-08-04 06:37:56,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 06:37:56,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:37:56,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:37:56,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 06:37:57,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:37:57,045 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:37:57,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:37:57,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1982578291, now seen corresponding path program 1 times [2023-08-04 06:37:57,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:37:57,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297953447] [2023-08-04 06:37:57,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:57,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:37:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:57,090 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 06:37:57,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:37:57,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297953447] [2023-08-04 06:37:57,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297953447] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:37:57,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215864466] [2023-08-04 06:37:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:37:57,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:37:57,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:37:57,092 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 06:37:57,096 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 06:37:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:37:57,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:37:57,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:37:57,173 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 06:37:57,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:37:57,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215864466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:37:57,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:37:57,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:37:57,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580241101] [2023-08-04 06:37:57,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:37:57,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:37:57,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:37:57,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:37:57,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:37:57,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 206 [2023-08-04 06:37:57,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 06:37:57,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:37:57,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 206 [2023-08-04 06:37:57,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:37:59,916 INFO L124 PetriNetUnfolderBase]: 30734/43358 cut-off events. [2023-08-04 06:37:59,917 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2023-08-04 06:38:00,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85613 conditions, 43358 events. 30734/43358 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 290619 event pairs, 23582 based on Foata normal form. 0/41626 useless extension candidates. Maximal degree in co-relation 24344. Up to 37757 conditions per place. [2023-08-04 06:38:00,154 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 41 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-04 06:38:00,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 232 flow [2023-08-04 06:38:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:38:00,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:38:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-08-04 06:38:00,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6067961165048543 [2023-08-04 06:38:00,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-08-04 06:38:00,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-08-04 06:38:00,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:38:00,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-08-04 06:38:00,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 06:38:00,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 06:38:00,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 06:38:00,159 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 122 flow. Second operand 3 states and 375 transitions. [2023-08-04 06:38:00,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 232 flow [2023-08-04 06:38:00,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:38:00,162 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 132 flow [2023-08-04 06:38:00,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-04 06:38:00,163 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-04 06:38:00,163 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 132 flow [2023-08-04 06:38:00,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 06:38:00,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:38:00,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:38:00,171 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 06:38:00,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:38:00,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:38:00,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:38:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash -832832190, now seen corresponding path program 1 times [2023-08-04 06:38:00,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:38:00,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781946619] [2023-08-04 06:38:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:00,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:38:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:00,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:38:00,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:38:00,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781946619] [2023-08-04 06:38:00,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781946619] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:38:00,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87580815] [2023-08-04 06:38:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:00,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:38:00,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:38:00,419 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 06:38:00,422 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 06:38:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:00,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:38:00,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:38:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:38:00,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:38:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:38:00,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87580815] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:38:00,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:38:00,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:38:00,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189219579] [2023-08-04 06:38:00,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:38:00,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:38:00,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:38:00,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:38:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:38:00,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 206 [2023-08-04 06:38:00,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 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 06:38:00,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:38:00,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 206 [2023-08-04 06:38:00,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:38:02,727 INFO L124 PetriNetUnfolderBase]: 24232/33893 cut-off events. [2023-08-04 06:38:02,727 INFO L125 PetriNetUnfolderBase]: For 3624/3624 co-relation queries the response was YES. [2023-08-04 06:38:02,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69782 conditions, 33893 events. 24232/33893 cut-off events. For 3624/3624 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 213857 event pairs, 14820 based on Foata normal form. 3/33868 useless extension candidates. Maximal degree in co-relation 24810. Up to 31258 conditions per place. [2023-08-04 06:38:02,957 INFO L140 encePairwiseOnDemand]: 202/206 looper letters, 36 selfloop transitions, 3 changer transitions 1/49 dead transitions. [2023-08-04 06:38:02,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 228 flow [2023-08-04 06:38:02,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:38:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:38:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 479 transitions. [2023-08-04 06:38:02,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813106796116505 [2023-08-04 06:38:02,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 479 transitions. [2023-08-04 06:38:02,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 479 transitions. [2023-08-04 06:38:02,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:38:02,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 479 transitions. [2023-08-04 06:38:02,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 06:38:02,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 06:38:02,966 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 06:38:02,966 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 132 flow. Second operand 4 states and 479 transitions. [2023-08-04 06:38:02,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 228 flow [2023-08-04 06:38:02,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:38:02,972 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 144 flow [2023-08-04 06:38:02,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2023-08-04 06:38:02,974 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-04 06:38:02,974 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 144 flow [2023-08-04 06:38:02,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 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 06:38:02,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:38:02,974 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:38:02,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 06:38:03,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:38:03,179 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:38:03,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:38:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash -475613238, now seen corresponding path program 1 times [2023-08-04 06:38:03,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:38:03,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982635531] [2023-08-04 06:38:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:03,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:38:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 06:38:03,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:38:03,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982635531] [2023-08-04 06:38:03,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982635531] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:38:03,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267984412] [2023-08-04 06:38:03,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:03,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:38:03,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:38:03,238 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 06:38:03,241 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 06:38:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:03,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:38:03,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:38:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 06:38:03,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:38:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 06:38:03,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267984412] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:38:03,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:38:03,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 06:38:03,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069799469] [2023-08-04 06:38:03,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:38:03,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:38:03,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:38:03,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:38:03,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:38:03,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 206 [2023-08-04 06:38:03,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states 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 06:38:03,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:38:03,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 206 [2023-08-04 06:38:03,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:38:04,902 INFO L124 PetriNetUnfolderBase]: 19198/26485 cut-off events. [2023-08-04 06:38:04,902 INFO L125 PetriNetUnfolderBase]: For 2439/2439 co-relation queries the response was YES. [2023-08-04 06:38:04,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54371 conditions, 26485 events. 19198/26485 cut-off events. For 2439/2439 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 160015 event pairs, 11902 based on Foata normal form. 27/26511 useless extension candidates. Maximal degree in co-relation 19295. Up to 23785 conditions per place. [2023-08-04 06:38:05,061 INFO L140 encePairwiseOnDemand]: 202/206 looper letters, 44 selfloop transitions, 3 changer transitions 1/57 dead transitions. [2023-08-04 06:38:05,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 272 flow [2023-08-04 06:38:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:38:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:38:05,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 487 transitions. [2023-08-04 06:38:05,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910194174757282 [2023-08-04 06:38:05,065 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 487 transitions. [2023-08-04 06:38:05,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 487 transitions. [2023-08-04 06:38:05,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:38:05,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 487 transitions. [2023-08-04 06:38:05,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 06:38:05,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 06:38:05,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 06:38:05,069 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 144 flow. Second operand 4 states and 487 transitions. [2023-08-04 06:38:05,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 272 flow [2023-08-04 06:38:05,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 265 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 06:38:05,073 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 151 flow [2023-08-04 06:38:05,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2023-08-04 06:38:05,074 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-08-04 06:38:05,074 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 151 flow [2023-08-04 06:38:05,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states 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 06:38:05,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:38:05,074 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:38:05,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-04 06:38:05,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:38:05,278 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:38:05,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:38:05,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1718929282, now seen corresponding path program 1 times [2023-08-04 06:38:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:38:05,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234166202] [2023-08-04 06:38:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:05,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:38:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:05,341 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 06:38:05,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:38:05,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234166202] [2023-08-04 06:38:05,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234166202] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:38:05,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41174272] [2023-08-04 06:38:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:05,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:38:05,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:38:05,343 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 06:38:05,370 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 06:38:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:05,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:38:05,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:38:05,449 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 06:38:05,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:38:05,463 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 06:38:05,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41174272] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:38:05,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:38:05,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 06:38:05,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97993919] [2023-08-04 06:38:05,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:38:05,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:38:05,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:38:05,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:38:05,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:38:05,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 206 [2023-08-04 06:38:05,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 06:38:05,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:38:05,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 206 [2023-08-04 06:38:05,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:38:07,165 INFO L124 PetriNetUnfolderBase]: 17362/23209 cut-off events. [2023-08-04 06:38:07,165 INFO L125 PetriNetUnfolderBase]: For 2377/2377 co-relation queries the response was YES. [2023-08-04 06:38:07,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48754 conditions, 23209 events. 17362/23209 cut-off events. For 2377/2377 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 127849 event pairs, 6886 based on Foata normal form. 243/23451 useless extension candidates. Maximal degree in co-relation 17297. Up to 11794 conditions per place. [2023-08-04 06:38:07,290 INFO L140 encePairwiseOnDemand]: 202/206 looper letters, 52 selfloop transitions, 3 changer transitions 1/65 dead transitions. [2023-08-04 06:38:07,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 311 flow [2023-08-04 06:38:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:38:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:38:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2023-08-04 06:38:07,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6007281553398058 [2023-08-04 06:38:07,294 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2023-08-04 06:38:07,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2023-08-04 06:38:07,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:38:07,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2023-08-04 06:38:07,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states 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 06:38:07,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 06:38:07,298 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 06:38:07,298 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 151 flow. Second operand 4 states and 495 transitions. [2023-08-04 06:38:07,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 311 flow [2023-08-04 06:38:07,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 304 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 06:38:07,302 INFO L231 Difference]: Finished difference. Result has 66 places, 41 transitions, 158 flow [2023-08-04 06:38:07,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=66, PETRI_TRANSITIONS=41} [2023-08-04 06:38:07,303 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-08-04 06:38:07,303 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 41 transitions, 158 flow [2023-08-04 06:38:07,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states 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 06:38:07,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:38:07,303 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:38:07,313 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 06:38:07,508 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 06:38:07,509 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:38:07,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:38:07,509 INFO L85 PathProgramCache]: Analyzing trace with hash -501771954, now seen corresponding path program 1 times [2023-08-04 06:38:07,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:38:07,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214004385] [2023-08-04 06:38:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:07,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:38:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 06:38:07,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:38:07,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214004385] [2023-08-04 06:38:07,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214004385] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:38:07,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:38:07,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:38:07,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402759731] [2023-08-04 06:38:07,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:38:07,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:38:07,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:38:07,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:38:07,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:38:07,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 206 [2023-08-04 06:38:07,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 41 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 06:38:07,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:38:07,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 206 [2023-08-04 06:38:07,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:38:19,540 INFO L124 PetriNetUnfolderBase]: 155311/195632 cut-off events. [2023-08-04 06:38:19,541 INFO L125 PetriNetUnfolderBase]: For 92505/92505 co-relation queries the response was YES. [2023-08-04 06:38:20,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445649 conditions, 195632 events. 155311/195632 cut-off events. For 92505/92505 co-relation queries the response was YES. Maximal size of possible extension queue 5354. Compared 1089817 event pairs, 63286 based on Foata normal form. 4036/199583 useless extension candidates. Maximal degree in co-relation 445558. Up to 103147 conditions per place. [2023-08-04 06:38:20,869 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 62 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2023-08-04 06:38:20,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 444 flow [2023-08-04 06:38:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:38:20,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:38:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-08-04 06:38:20,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6003236245954693 [2023-08-04 06:38:20,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-08-04 06:38:20,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-08-04 06:38:20,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:38:20,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-08-04 06:38:20,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states 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 06:38:20,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 06:38:20,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 06:38:20,873 INFO L175 Difference]: Start difference. First operand has 66 places, 41 transitions, 158 flow. Second operand 3 states and 371 transitions. [2023-08-04 06:38:20,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 444 flow [2023-08-04 06:38:21,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 430 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 06:38:21,163 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 237 flow [2023-08-04 06:38:21,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2023-08-04 06:38:21,164 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2023-08-04 06:38:21,164 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 237 flow [2023-08-04 06:38:21,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 06:38:21,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:38:21,165 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:38:21,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 06:38:21,165 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:38:21,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:38:21,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1624938058, now seen corresponding path program 1 times [2023-08-04 06:38:21,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:38:21,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026456447] [2023-08-04 06:38:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:21,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:38:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 06:38:21,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:38:21,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026456447] [2023-08-04 06:38:21,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026456447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:38:21,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:38:21,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:38:21,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676679032] [2023-08-04 06:38:21,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:38:21,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 06:38:21,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:38:21,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 06:38:21,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 06:38:21,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 206 [2023-08-04 06:38:21,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 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 06:38:21,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:38:21,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 206 [2023-08-04 06:38:21,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:38:32,472 INFO L124 PetriNetUnfolderBase]: 146051/184558 cut-off events. [2023-08-04 06:38:32,472 INFO L125 PetriNetUnfolderBase]: For 148772/148772 co-relation queries the response was YES. [2023-08-04 06:38:32,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535823 conditions, 184558 events. 146051/184558 cut-off events. For 148772/148772 co-relation queries the response was YES. Maximal size of possible extension queue 4870. Compared 1024359 event pairs, 30565 based on Foata normal form. 960/185518 useless extension candidates. Maximal degree in co-relation 224014. Up to 72568 conditions per place. [2023-08-04 06:38:33,504 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 77 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2023-08-04 06:38:33,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 603 flow [2023-08-04 06:38:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:38:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:38:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 482 transitions. [2023-08-04 06:38:33,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849514563106796 [2023-08-04 06:38:33,506 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 482 transitions. [2023-08-04 06:38:33,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 482 transitions. [2023-08-04 06:38:33,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:38:33,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 482 transitions. [2023-08-04 06:38:33,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 0 states 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 06:38:33,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 06:38:33,510 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 06:38:33,510 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 237 flow. Second operand 4 states and 482 transitions. [2023-08-04 06:38:33,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 603 flow [2023-08-04 06:38:33,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 95 transitions, 561 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:38:33,988 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 345 flow [2023-08-04 06:38:33,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2023-08-04 06:38:33,991 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2023-08-04 06:38:33,991 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 345 flow [2023-08-04 06:38:33,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 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 06:38:33,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:38:33,992 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:38:33,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 06:38:33,992 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:38:33,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:38:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash 625458516, now seen corresponding path program 1 times [2023-08-04 06:38:33,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:38:33,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186919917] [2023-08-04 06:38:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:33,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:38:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 06:38:34,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:38:34,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186919917] [2023-08-04 06:38:34,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186919917] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:38:34,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40115515] [2023-08-04 06:38:34,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:34,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:38:34,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:38:34,122 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:38:34,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 06:38:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:34,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-04 06:38:34,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:38:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 06:38:34,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:38:34,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40115515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:38:34,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:38:34,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 06:38:34,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168043637] [2023-08-04 06:38:34,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:38:34,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:38:34,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:38:34,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:38:34,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-04 06:38:34,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 206 [2023-08-04 06:38:34,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 06:38:34,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:38:34,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 206 [2023-08-04 06:38:34,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:38:42,188 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([619] L761-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= v_~__unbuffered_cnt~0_105 (+ v_~__unbuffered_cnt~0_106 1)) (= |v_P2Thread2of2ForFork2_#res.base_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_106} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_105} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][92], [P2Thread2of2ForFork2InUse, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, Black: 609#(<= ~__unbuffered_p2_EBX~0 0), Black: 607#true, P1Thread1of2ForFork1InUse, 16#$Ultimate##0true, 79#P2EXITtrue, P1Thread2of2ForFork1InUse, 117#P1EXITtrue, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 17#L761true, 610#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), 15#L731true, 615#true, Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 11#P0EXITtrue, 64#L790true, P2Thread1of2ForFork2InUse, Black: 601#true, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 06:38:42,189 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2023-08-04 06:38:42,189 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:38:42,189 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:38:42,189 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:38:42,198 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([619] L761-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= v_~__unbuffered_cnt~0_105 (+ v_~__unbuffered_cnt~0_106 1)) (= |v_P2Thread2of2ForFork2_#res.base_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_106} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_105} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][92], [P2Thread2of2ForFork2InUse, 113#P1EXITtrue, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, Black: 609#(<= ~__unbuffered_p2_EBX~0 0), P1Thread1of2ForFork1InUse, Black: 607#true, P1Thread2of2ForFork1InUse, 79#P2EXITtrue, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 17#L761true, 4#$Ultimate##0true, 610#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), 15#L731true, 615#true, Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 64#L790true, 11#P0EXITtrue, P2Thread1of2ForFork2InUse, Black: 601#true, Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 06:38:42,198 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2023-08-04 06:38:42,199 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:38:42,199 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:38:42,199 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:38:42,921 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([619] L761-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= v_~__unbuffered_cnt~0_105 (+ v_~__unbuffered_cnt~0_106 1)) (= |v_P2Thread2of2ForFork2_#res.base_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_106} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_105} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][92], [P2Thread2of2ForFork2InUse, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, Black: 609#(<= ~__unbuffered_p2_EBX~0 0), 59#L743true, P1Thread1of2ForFork1InUse, Black: 607#true, 79#P2EXITtrue, P1Thread2of2ForFork1InUse, 117#P1EXITtrue, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 17#L761true, 610#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), 15#L731true, Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), 615#true, Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 64#L790true, 11#P0EXITtrue, P2Thread1of2ForFork2InUse, Black: 601#true, Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 06:38:42,921 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-08-04 06:38:42,921 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:38:42,922 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:38:42,922 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:38:42,929 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([619] L761-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= v_~__unbuffered_cnt~0_105 (+ v_~__unbuffered_cnt~0_106 1)) (= |v_P2Thread2of2ForFork2_#res.base_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_106} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_105} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][92], [P2Thread2of2ForFork2InUse, 113#P1EXITtrue, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, Black: 609#(<= ~__unbuffered_p2_EBX~0 0), P1Thread1of2ForFork1InUse, Black: 607#true, 79#P2EXITtrue, P1Thread2of2ForFork1InUse, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 17#L761true, 610#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), 15#L731true, Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), 615#true, Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 64#L790true, 11#P0EXITtrue, 89#L743true, P2Thread1of2ForFork2InUse, Black: 601#true, Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 06:38:42,929 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-08-04 06:38:42,929 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:38:42,929 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:38:42,929 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:38:43,379 INFO L124 PetriNetUnfolderBase]: 94232/124277 cut-off events. [2023-08-04 06:38:43,379 INFO L125 PetriNetUnfolderBase]: For 150265/157088 co-relation queries the response was YES. [2023-08-04 06:38:43,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359681 conditions, 124277 events. 94232/124277 cut-off events. For 150265/157088 co-relation queries the response was YES. Maximal size of possible extension queue 5283. Compared 804529 event pairs, 19980 based on Foata normal form. 1961/116873 useless extension candidates. Maximal degree in co-relation 183474. Up to 100783 conditions per place. [2023-08-04 06:38:44,354 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 69 selfloop transitions, 7 changer transitions 0/99 dead transitions. [2023-08-04 06:38:44,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 99 transitions, 676 flow [2023-08-04 06:38:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:38:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:38:44,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2023-08-04 06:38:44,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132686084142395 [2023-08-04 06:38:44,356 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2023-08-04 06:38:44,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2023-08-04 06:38:44,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:38:44,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2023-08-04 06:38:44,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 06:38:44,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 06:38:44,358 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 06:38:44,358 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 345 flow. Second operand 3 states and 379 transitions. [2023-08-04 06:38:44,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 99 transitions, 676 flow [2023-08-04 06:38:44,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 99 transitions, 676 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:38:44,964 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 392 flow [2023-08-04 06:38:44,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2023-08-04 06:38:44,964 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2023-08-04 06:38:44,964 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 392 flow [2023-08-04 06:38:44,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 06:38:44,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:38:44,965 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:38:44,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 06:38:45,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-04 06:38:45,167 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:38:45,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:38:45,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1977206458, now seen corresponding path program 1 times [2023-08-04 06:38:45,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:38:45,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557370575] [2023-08-04 06:38:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:45,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:38:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 06:38:45,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:38:45,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557370575] [2023-08-04 06:38:45,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557370575] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:38:45,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620299305] [2023-08-04 06:38:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:38:45,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:38:45,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:38:45,365 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:38:45,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 06:38:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:38:45,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-04 06:38:45,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:38:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 06:38:45,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:38:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 06:38:45,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620299305] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:38:45,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:38:45,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 6 [2023-08-04 06:38:45,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575425382] [2023-08-04 06:38:45,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:38:45,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 06:38:45,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:38:45,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 06:38:45,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-04 06:38:45,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 206 [2023-08-04 06:38:45,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 392 flow. Second operand has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 06:38:45,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:38:45,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 206 [2023-08-04 06:38:45,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:38:57,626 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([620] L731-->P0EXIT: Formula: (and (= v_~__unbuffered_cnt~0_109 (+ v_~__unbuffered_cnt~0_110 1)) (= |v_P0Thread2of2ForFork0_#res.base_7| 0) (= |v_P0Thread2of2ForFork0_#res.offset_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_110} OutVars{P0Thread2of2ForFork0_#res.base=|v_P0Thread2of2ForFork0_#res.base_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_109, P0Thread2of2ForFork0_#res.offset=|v_P0Thread2of2ForFork0_#res.offset_7|} AuxVars[] AssignedVars[P0Thread2of2ForFork0_#res.base, ~__unbuffered_cnt~0, P0Thread2of2ForFork0_#res.offset][183], [P2Thread2of2ForFork2InUse, 113#P1EXITtrue, 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, 104#P0EXITtrue, P1Thread2of2ForFork1InUse, Black: 623#(<= ~__unbuffered_cnt~0 0), Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 615#true, Black: 449#true, Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 48#L761true, Black: 603#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), 607#true, Black: 610#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), Black: 609#(<= ~__unbuffered_p2_EBX~0 0), 117#P1EXITtrue, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 719#(= ~__unbuffered_p2_EAX~0 0), 17#L761true, 35#L785-6true, 11#P0EXITtrue, P2Thread1of2ForFork2InUse, Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 06:38:57,626 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2023-08-04 06:38:57,626 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:38:57,626 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:38:57,626 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:38:57,739 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([619] L761-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= v_~__unbuffered_cnt~0_105 (+ v_~__unbuffered_cnt~0_106 1)) (= |v_P2Thread2of2ForFork2_#res.base_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_106} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_105} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][346], [P2Thread2of2ForFork2InUse, 113#P1EXITtrue, 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 79#P2EXITtrue, Black: 623#(<= ~__unbuffered_cnt~0 0), Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 15#L731true, 615#true, Black: 449#true, Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 601#true, Black: 609#(<= ~__unbuffered_p2_EBX~0 0), Black: 607#true, 117#P1EXITtrue, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 719#(= ~__unbuffered_p2_EAX~0 0), 17#L761true, 610#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), 35#L785-6true, 11#P0EXITtrue, P2Thread1of2ForFork2InUse, Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 06:38:57,740 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is not cut-off event [2023-08-04 06:38:57,740 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is not cut-off event [2023-08-04 06:38:57,740 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is not cut-off event [2023-08-04 06:38:57,740 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is not cut-off event [2023-08-04 06:38:58,394 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([620] L731-->P0EXIT: Formula: (and (= v_~__unbuffered_cnt~0_109 (+ v_~__unbuffered_cnt~0_110 1)) (= |v_P0Thread2of2ForFork0_#res.base_7| 0) (= |v_P0Thread2of2ForFork0_#res.offset_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_110} OutVars{P0Thread2of2ForFork0_#res.base=|v_P0Thread2of2ForFork0_#res.base_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_109, P0Thread2of2ForFork0_#res.offset=|v_P0Thread2of2ForFork0_#res.offset_7|} AuxVars[] AssignedVars[P0Thread2of2ForFork0_#res.base, ~__unbuffered_cnt~0, P0Thread2of2ForFork0_#res.offset][183], [P2Thread2of2ForFork2InUse, 113#P1EXITtrue, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 2#L785-11true, P1Thread1of2ForFork1InUse, 104#P0EXITtrue, P1Thread2of2ForFork1InUse, Black: 623#(<= ~__unbuffered_cnt~0 0), Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 615#true, Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 48#L761true, Black: 603#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), 607#true, Black: 610#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), Black: 609#(<= ~__unbuffered_p2_EBX~0 0), 117#P1EXITtrue, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 17#L761true, 719#(= ~__unbuffered_p2_EAX~0 0), 11#P0EXITtrue, P2Thread1of2ForFork2InUse, Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 06:38:58,394 INFO L294 olderBase$Statistics]: this new event has 43 ancestors and is cut-off event [2023-08-04 06:38:58,394 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-04 06:38:58,394 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-04 06:38:58,394 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-04 06:38:58,437 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([619] L761-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= v_~__unbuffered_cnt~0_105 (+ v_~__unbuffered_cnt~0_106 1)) (= |v_P2Thread2of2ForFork2_#res.base_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_106} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_105} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][346], [P2Thread2of2ForFork2InUse, 113#P1EXITtrue, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 2#L785-11true, P1Thread1of2ForFork1InUse, 79#P2EXITtrue, P1Thread2of2ForFork1InUse, Black: 623#(<= ~__unbuffered_cnt~0 0), Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 15#L731true, 615#true, Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 601#true, Black: 609#(<= ~__unbuffered_p2_EBX~0 0), Black: 607#true, 117#P1EXITtrue, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 719#(= ~__unbuffered_p2_EAX~0 0), 17#L761true, 610#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), 11#P0EXITtrue, P2Thread1of2ForFork2InUse, Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 06:38:58,438 INFO L294 olderBase$Statistics]: this new event has 43 ancestors and is not cut-off event [2023-08-04 06:38:58,438 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is not cut-off event [2023-08-04 06:38:58,438 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is not cut-off event [2023-08-04 06:38:58,438 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is not cut-off event [2023-08-04 06:38:58,439 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([619] L761-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= v_~__unbuffered_cnt~0_105 (+ v_~__unbuffered_cnt~0_106 1)) (= |v_P2Thread2of2ForFork2_#res.base_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_106} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_105} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][346], [P2Thread2of2ForFork2InUse, 113#P1EXITtrue, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 79#P2EXITtrue, Black: 623#(<= ~__unbuffered_cnt~0 0), Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 15#L731true, Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), 615#true, Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 601#true, Black: 609#(<= ~__unbuffered_p2_EBX~0 0), Black: 607#true, 117#P1EXITtrue, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 17#L761true, 719#(= ~__unbuffered_p2_EAX~0 0), 610#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), 64#L790true, 11#P0EXITtrue, P2Thread1of2ForFork2InUse, Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 06:38:58,439 INFO L294 olderBase$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-04 06:38:58,439 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:38:58,439 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:38:58,439 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:38:58,483 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([620] L731-->P0EXIT: Formula: (and (= v_~__unbuffered_cnt~0_109 (+ v_~__unbuffered_cnt~0_110 1)) (= |v_P0Thread2of2ForFork0_#res.base_7| 0) (= |v_P0Thread2of2ForFork0_#res.offset_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_110} OutVars{P0Thread2of2ForFork0_#res.base=|v_P0Thread2of2ForFork0_#res.base_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_109, P0Thread2of2ForFork0_#res.offset=|v_P0Thread2of2ForFork0_#res.offset_7|} AuxVars[] AssignedVars[P0Thread2of2ForFork0_#res.base, ~__unbuffered_cnt~0, P0Thread2of2ForFork0_#res.offset][183], [P2Thread2of2ForFork2InUse, 113#P1EXITtrue, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, 104#P0EXITtrue, P1Thread2of2ForFork1InUse, Black: 623#(<= ~__unbuffered_cnt~0 0), Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 615#true, Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 48#L761true, Black: 603#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), 607#true, Black: 610#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p2_EBX~0 1)) (not (= ~__unbuffered_p0_EAX~0 0))), Black: 609#(<= ~__unbuffered_p2_EBX~0 0), 117#P1EXITtrue, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 17#L761true, 719#(= ~__unbuffered_p2_EAX~0 0), 11#P0EXITtrue, 64#L790true, P2Thread1of2ForFork2InUse, Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 06:38:58,484 INFO L294 olderBase$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-04 06:38:58,484 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:38:58,484 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:38:58,484 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:38:58,527 INFO L124 PetriNetUnfolderBase]: 134608/177322 cut-off events. [2023-08-04 06:38:58,527 INFO L125 PetriNetUnfolderBase]: For 282156/298482 co-relation queries the response was YES. [2023-08-04 06:38:59,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602418 conditions, 177322 events. 134608/177322 cut-off events. For 282156/298482 co-relation queries the response was YES. Maximal size of possible extension queue 7125. Compared 1167666 event pairs, 4211 based on Foata normal form. 14496/187007 useless extension candidates. Maximal degree in co-relation 602321. Up to 60785 conditions per place. [2023-08-04 06:38:59,649 INFO L140 encePairwiseOnDemand]: 191/206 looper letters, 239 selfloop transitions, 73 changer transitions 21/350 dead transitions. [2023-08-04 06:38:59,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 350 transitions, 2553 flow [2023-08-04 06:38:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-04 06:38:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-04 06:38:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1424 transitions. [2023-08-04 06:38:59,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760517799352751 [2023-08-04 06:38:59,653 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1424 transitions. [2023-08-04 06:38:59,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1424 transitions. [2023-08-04 06:38:59,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:38:59,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1424 transitions. [2023-08-04 06:38:59,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 118.66666666666667) internal successors, (1424), 12 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states 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 06:38:59,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states 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 06:38:59,660 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states 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 06:38:59,661 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 392 flow. Second operand 12 states and 1424 transitions. [2023-08-04 06:38:59,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 350 transitions, 2553 flow [2023-08-04 06:39:00,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 350 transitions, 2538 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:39:00,753 INFO L231 Difference]: Finished difference. Result has 93 places, 141 transitions, 1122 flow [2023-08-04 06:39:00,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1122, PETRI_PLACES=93, PETRI_TRANSITIONS=141} [2023-08-04 06:39:00,754 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 42 predicate places. [2023-08-04 06:39:00,754 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 141 transitions, 1122 flow [2023-08-04 06:39:00,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 06:39:00,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:39:00,754 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:39:00,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 06:39:00,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-04 06:39:00,955 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:39:00,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:39:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2124316767, now seen corresponding path program 1 times [2023-08-04 06:39:00,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:39:00,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264380073] [2023-08-04 06:39:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:39:00,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:39:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:39:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 06:39:01,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:39:01,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264380073] [2023-08-04 06:39:01,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264380073] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:39:01,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380966778] [2023-08-04 06:39:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:39:01,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:39:01,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:39:01,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:39:01,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 06:39:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:39:01,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-04 06:39:01,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:39:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 06:39:01,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:39:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 06:39:01,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380966778] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-04 06:39:01,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-04 06:39:01,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 15 [2023-08-04 06:39:01,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90414359] [2023-08-04 06:39:01,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:39:01,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 06:39:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:39:01,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 06:39:01,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-08-04 06:39:01,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 206 [2023-08-04 06:39:01,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 141 transitions, 1122 flow. Second operand has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 06:39:01,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:39:01,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 206 [2023-08-04 06:39:01,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:39:30,450 INFO L124 PetriNetUnfolderBase]: 195072/264130 cut-off events. [2023-08-04 06:39:30,450 INFO L125 PetriNetUnfolderBase]: For 1271719/1303675 co-relation queries the response was YES. [2023-08-04 06:39:32,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227182 conditions, 264130 events. 195072/264130 cut-off events. For 1271719/1303675 co-relation queries the response was YES. Maximal size of possible extension queue 10898. Compared 1932245 event pairs, 33255 based on Foata normal form. 4293/259049 useless extension candidates. Maximal degree in co-relation 1227064. Up to 129235 conditions per place. [2023-08-04 06:39:32,817 INFO L140 encePairwiseOnDemand]: 191/206 looper letters, 190 selfloop transitions, 120 changer transitions 24/351 dead transitions. [2023-08-04 06:39:32,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 351 transitions, 3497 flow [2023-08-04 06:39:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 06:39:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 06:39:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 705 transitions. [2023-08-04 06:39:32,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703883495145631 [2023-08-04 06:39:32,820 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 705 transitions. [2023-08-04 06:39:32,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 705 transitions. [2023-08-04 06:39:32,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:39:32,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 705 transitions. [2023-08-04 06:39:32,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.5) internal successors, (705), 6 states have internal predecessors, (705), 0 states have call successors, (0), 0 states 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 06:39:32,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 06:39:32,824 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 06:39:32,824 INFO L175 Difference]: Start difference. First operand has 93 places, 141 transitions, 1122 flow. Second operand 6 states and 705 transitions. [2023-08-04 06:39:32,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 351 transitions, 3497 flow [2023-08-04 06:42:34,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 351 transitions, 3330 flow, removed 70 selfloop flow, removed 2 redundant places. [2023-08-04 06:42:34,458 INFO L231 Difference]: Finished difference. Result has 100 places, 258 transitions, 2717 flow [2023-08-04 06:42:34,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2717, PETRI_PLACES=100, PETRI_TRANSITIONS=258} [2023-08-04 06:42:34,459 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 49 predicate places. [2023-08-04 06:42:34,459 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 258 transitions, 2717 flow [2023-08-04 06:42:34,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 06:42:34,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:42:34,460 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:42:34,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-04 06:42:34,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-04 06:42:34,666 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:42:34,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:42:34,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1467401027, now seen corresponding path program 2 times [2023-08-04 06:42:34,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:42:34,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750975716] [2023-08-04 06:42:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:42:34,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:42:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:42:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 06:42:34,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:42:34,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750975716] [2023-08-04 06:42:34,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750975716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:42:34,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:42:34,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 06:42:34,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168761596] [2023-08-04 06:42:34,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:42:34,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 06:42:34,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:42:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 06:42:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 06:42:34,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 206 [2023-08-04 06:42:34,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 258 transitions, 2717 flow. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states 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 06:42:34,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:42:34,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 206 [2023-08-04 06:42:34,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:43:18,422 INFO L124 PetriNetUnfolderBase]: 280320/381898 cut-off events. [2023-08-04 06:43:18,422 INFO L125 PetriNetUnfolderBase]: For 2454154/2480482 co-relation queries the response was YES. [2023-08-04 06:43:21,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1910049 conditions, 381898 events. 280320/381898 cut-off events. For 2454154/2480482 co-relation queries the response was YES. Maximal size of possible extension queue 16494. Compared 2954196 event pairs, 33162 based on Foata normal form. 5918/376762 useless extension candidates. Maximal degree in co-relation 1909920. Up to 105169 conditions per place. [2023-08-04 06:43:21,940 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 285 selfloop transitions, 62 changer transitions 113/477 dead transitions. [2023-08-04 06:43:21,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 477 transitions, 5656 flow [2023-08-04 06:43:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 06:43:21,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 06:43:21,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2023-08-04 06:43:21,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.612621359223301 [2023-08-04 06:43:21,942 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2023-08-04 06:43:21,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2023-08-04 06:43:21,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:43:21,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2023-08-04 06:43:21,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 06:43:21,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 06:43:21,946 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 06:43:21,946 INFO L175 Difference]: Start difference. First operand has 100 places, 258 transitions, 2717 flow. Second operand 5 states and 631 transitions. [2023-08-04 06:43:21,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 477 transitions, 5656 flow Received shutdown request... [2023-08-04 06:51:15,745 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 06:51:16,755 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 [2023-08-04 06:51:19,284 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 06:51:19,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-04 06:51:19,284 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-04 06:51:19,284 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:51:19,285 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (1/2) [2023-08-04 06:51:19,285 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 06:51:19,285 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 06:51:19,289 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 06:51:19 BasicIcfg [2023-08-04 06:51:19,289 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 06:51:19,289 INFO L158 Benchmark]: Toolchain (without parser) took 818728.26ms. Allocated memory was 350.2MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 298.8MB in the beginning and 8.0GB in the end (delta: -7.7GB). Peak memory consumption was 12.4GB. Max. memory is 16.0GB. [2023-08-04 06:51:19,290 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 350.2MB. Free memory was 303.7MB in the beginning and 303.5MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 06:51:19,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 505.02ms. Allocated memory is still 350.2MB. Free memory was 298.5MB in the beginning and 277.8MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 06:51:19,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.08ms. Allocated memory is still 350.2MB. Free memory was 277.8MB in the beginning and 275.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 06:51:19,290 INFO L158 Benchmark]: Boogie Preprocessor took 25.55ms. Allocated memory is still 350.2MB. Free memory was 275.7MB in the beginning and 274.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 06:51:19,290 INFO L158 Benchmark]: RCFGBuilder took 434.69ms. Allocated memory was 350.2MB in the beginning and 497.0MB in the end (delta: 146.8MB). Free memory was 274.3MB in the beginning and 463.4MB in the end (delta: -189.1MB). Peak memory consumption was 21.6MB. Max. memory is 16.0GB. [2023-08-04 06:51:19,291 INFO L158 Benchmark]: TraceAbstraction took 817714.34ms. Allocated memory was 497.0MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 462.7MB in the beginning and 8.0GB in the end (delta: -7.5GB). Peak memory consumption was 12.4GB. Max. memory is 16.0GB. [2023-08-04 06:51:19,292 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 350.2MB. Free memory was 303.7MB in the beginning and 303.5MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 505.02ms. Allocated memory is still 350.2MB. Free memory was 298.5MB in the beginning and 277.8MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.08ms. Allocated memory is still 350.2MB. Free memory was 277.8MB in the beginning and 275.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.55ms. Allocated memory is still 350.2MB. Free memory was 275.7MB in the beginning and 274.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 434.69ms. Allocated memory was 350.2MB in the beginning and 497.0MB in the end (delta: 146.8MB). Free memory was 274.3MB in the beginning and 463.4MB in the end (delta: -189.1MB). Peak memory consumption was 21.6MB. Max. memory is 16.0GB. * TraceAbstraction took 817714.34ms. Allocated memory was 497.0MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 462.7MB in the beginning and 8.0GB in the end (delta: -7.5GB). Peak memory consumption was 12.4GB. 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: 2.0s, 94 PlacesBefore, 30 PlacesAfterwards, 91 TransitionsBefore, 24 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 76 TotalNumberOfCompositions, 2845 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1509, independent: 1428, independent conditional: 0, independent unconditional: 1428, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 841, independent: 820, independent conditional: 0, independent unconditional: 820, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1509, independent: 608, independent conditional: 0, independent unconditional: 608, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 841, unknown conditional: 0, unknown unconditional: 841] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 83 PlacesBefore, 30 PlacesAfterwards, 78 TransitionsBefore, 23 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 60 TotalNumberOfCompositions, 2116 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1324, independent: 1252, independent conditional: 0, independent unconditional: 1252, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 566, independent: 554, independent conditional: 0, independent unconditional: 554, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1324, independent: 698, independent conditional: 0, independent unconditional: 698, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 566, unknown conditional: 0, unknown unconditional: 566] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 55, Positive conditional cache size: 0, Positive unconditional cache size: 55, 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: 1.9s, 121 PlacesBefore, 51 PlacesAfterwards, 112 TransitionsBefore, 38 TransitionsAfterwards, 3996 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 4 ChoiceCompositions, 79 TotalNumberOfCompositions, 7661 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3481, independent: 3335, independent conditional: 0, independent unconditional: 3335, dependent: 146, dependent conditional: 0, dependent unconditional: 146, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1901, independent: 1866, independent conditional: 0, independent unconditional: 1866, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3481, independent: 1469, independent conditional: 0, independent unconditional: 1469, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 1901, unknown conditional: 0, unknown unconditional: 1901] , Statistics on independence cache: Total cache size (in pairs): 159, Positive cache size: 142, Positive conditional cache size: 0, Positive unconditional cache size: 142, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 123 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 82 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 181 IncrementalHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 2 mSDtfsCounter, 181 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 123 SizeOfPredicates, 0 NumberOfNonLiveVariables, 390 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 10/15 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, 144 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 811.8s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 805.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 601 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 484 mSDsluCounter, 93 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1324 IncrementalHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 30 mSDtfsCounter, 1324 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 354 GetRequests, 294 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2717occurred in iteration=11, InterpolantAutomatonStates: 49, 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, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 478 NumberOfCodeBlocks, 478 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 587 ConstructedInterpolants, 0 QuantifiedInterpolants, 1947 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1438 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 25 InterpolantComputations, 8 PerfectInterpolantSequences, 247/276 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, 123 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown