/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_stack_longest-1_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 07:54:17,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 07:54:17,467 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 07:54:17,473 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 07:54:17,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 07:54:17,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 07:54:17,475 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 07:54:17,510 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 07:54:17,511 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 07:54:17,514 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 07:54:17,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 07:54:17,515 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 07:54:17,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 07:54:17,517 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 07:54:17,517 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 07:54:17,518 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 07:54:17,518 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 07:54:17,518 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 07:54:17,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 07:54:17,519 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 07:54:17,519 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 07:54:17,519 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 07:54:17,519 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 07:54:17,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 07:54:17,520 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 07:54:17,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 07:54:17,520 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 07:54:17,521 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 07:54:17,521 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 07:54:17,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 07:54:17,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:54:17,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 07:54:17,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 07:54:17,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 07:54:17,523 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 07:54:17,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 07:54:17,523 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 07:54:17,523 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 07:54:17,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 07:54:17,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 07:54:17,524 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 07:54:17,524 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 07:54:17,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 07:54:17,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 07:54:17,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 07:54:17,802 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 07:54:17,803 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 07:54:17,804 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread_stack_longest-1_bound2.i [2023-08-04 07:54:18,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 07:54:19,151 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 07:54:19,152 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread_stack_longest-1_bound2.i [2023-08-04 07:54:19,172 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6c71bbf/2361e7b214a34506b4bebe26c2456a4e/FLAG6a75cb190 [2023-08-04 07:54:19,185 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6c71bbf/2361e7b214a34506b4bebe26c2456a4e [2023-08-04 07:54:19,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 07:54:19,189 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 07:54:19,190 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 07:54:19,190 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 07:54:19,193 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 07:54:19,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503efd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19, skipping insertion in model container [2023-08-04 07:54:19,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,249 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 07:54:19,630 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_stack_longest-1_bound2.i[41530,41543] [2023-08-04 07:54:19,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:54:19,686 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 07:54:19,716 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 07:54:19,718 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 07:54:19,742 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-04 07:54:19,747 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_stack_longest-1_bound2.i[41530,41543] [2023-08-04 07:54:19,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:54:19,829 INFO L206 MainTranslator]: Completed translation [2023-08-04 07:54:19,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19 WrapperNode [2023-08-04 07:54:19,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 07:54:19,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 07:54:19,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 07:54:19,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 07:54:19,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,901 INFO L138 Inliner]: procedures = 277, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 188 [2023-08-04 07:54:19,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 07:54:19,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 07:54:19,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 07:54:19,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 07:54:19,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 07:54:19,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 07:54:19,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 07:54:19,951 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 07:54:19,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (1/1) ... [2023-08-04 07:54:19,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:54:19,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:19,981 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 07:54:19,993 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 07:54:20,019 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-04 07:54:20,020 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-04 07:54:20,020 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-04 07:54:20,021 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-04 07:54:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 07:54:20,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 07:54:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 07:54:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 07:54:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 07:54:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 07:54:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 07:54:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 07:54:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 07:54:20,025 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 07:54:20,230 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 07:54:20,231 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 07:54:20,447 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 07:54:20,454 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 07:54:20,454 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-04 07:54:20,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:54:20 BoogieIcfgContainer [2023-08-04 07:54:20,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 07:54:20,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 07:54:20,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 07:54:20,461 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 07:54:20,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 07:54:19" (1/3) ... [2023-08-04 07:54:20,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a26226b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:54:20, skipping insertion in model container [2023-08-04 07:54:20,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:54:19" (2/3) ... [2023-08-04 07:54:20,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a26226b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:54:20, skipping insertion in model container [2023-08-04 07:54:20,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:54:20" (3/3) ... [2023-08-04 07:54:20,464 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_stack_longest-1_bound2.i [2023-08-04 07:54:20,471 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 07:54:20,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 07:54:20,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 07:54:20,480 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 07:54:20,561 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-04 07:54:20,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 188 transitions, 398 flow [2023-08-04 07:54:20,691 INFO L124 PetriNetUnfolderBase]: 37/343 cut-off events. [2023-08-04 07:54:20,691 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 07:54:20,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 343 events. 37/343 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1450 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-08-04 07:54:20,703 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 188 transitions, 398 flow [2023-08-04 07:54:20,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 188 transitions, 398 flow [2023-08-04 07:54:20,712 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:54:20,720 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 188 transitions, 398 flow [2023-08-04 07:54:20,722 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 188 transitions, 398 flow [2023-08-04 07:54:20,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 188 transitions, 398 flow [2023-08-04 07:54:20,818 INFO L124 PetriNetUnfolderBase]: 37/343 cut-off events. [2023-08-04 07:54:20,818 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 07:54:20,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 343 events. 37/343 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1450 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 187. Up to 8 conditions per place. [2023-08-04 07:54:20,832 INFO L119 LiptonReduction]: Number of co-enabled transitions 15606 [2023-08-04 07:54:24,421 INFO L134 LiptonReduction]: Checked pairs total: 22758 [2023-08-04 07:54:24,421 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-08-04 07:54:24,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:54:24,438 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;@3220ac78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:54:24,439 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 07:54:24,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:54:24,444 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-08-04 07:54:24,444 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 07:54:24,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:24,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:24,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:24,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:24,450 INFO L85 PathProgramCache]: Analyzing trace with hash -814335984, now seen corresponding path program 1 times [2023-08-04 07:54:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:24,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563329306] [2023-08-04 07:54:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:24,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:24,766 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 07:54:24,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:24,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563329306] [2023-08-04 07:54:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563329306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:54:24,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:54:24,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:54:24,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435306153] [2023-08-04 07:54:24,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:54:24,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:54:24,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:54:24,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:54:24,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 356 [2023-08-04 07:54:24,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:24,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:24,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 356 [2023-08-04 07:54:24,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:25,368 INFO L124 PetriNetUnfolderBase]: 3758/5878 cut-off events. [2023-08-04 07:54:25,369 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2023-08-04 07:54:25,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11745 conditions, 5878 events. 3758/5878 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 30003 event pairs, 1364 based on Foata normal form. 0/4081 useless extension candidates. Maximal degree in co-relation 10876. Up to 3229 conditions per place. [2023-08-04 07:54:25,407 INFO L140 encePairwiseOnDemand]: 351/356 looper letters, 77 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-08-04 07:54:25,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 85 transitions, 367 flow [2023-08-04 07:54:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:54:25,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:54:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2023-08-04 07:54:25,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545880149812734 [2023-08-04 07:54:25,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2023-08-04 07:54:25,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2023-08-04 07:54:25,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:25,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2023-08-04 07:54:25,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:25,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 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 07:54:25,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 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 07:54:25,438 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 120 flow. Second operand 3 states and 583 transitions. [2023-08-04 07:54:25,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 85 transitions, 367 flow [2023-08-04 07:54:25,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 85 transitions, 367 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:54:25,447 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 144 flow [2023-08-04 07:54:25,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2023-08-04 07:54:25,451 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-08-04 07:54:25,452 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 144 flow [2023-08-04 07:54:25,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:25,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:25,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:25,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 07:54:25,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:25,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:25,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1416252716, now seen corresponding path program 1 times [2023-08-04 07:54:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:25,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67316457] [2023-08-04 07:54:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:25,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:25,500 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 07:54:25,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:25,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67316457] [2023-08-04 07:54:25,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67316457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:54:25,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:54:25,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:54:25,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590956728] [2023-08-04 07:54:25,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:54:25,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:54:25,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:25,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:54:25,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:54:25,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 356 [2023-08-04 07:54:25,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:25,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:25,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 356 [2023-08-04 07:54:25,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:26,013 INFO L124 PetriNetUnfolderBase]: 3729/5868 cut-off events. [2023-08-04 07:54:26,014 INFO L125 PetriNetUnfolderBase]: For 599/599 co-relation queries the response was YES. [2023-08-04 07:54:26,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12421 conditions, 5868 events. 3729/5868 cut-off events. For 599/599 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 31528 event pairs, 1431 based on Foata normal form. 0/4273 useless extension candidates. Maximal degree in co-relation 11608. Up to 5654 conditions per place. [2023-08-04 07:54:26,050 INFO L140 encePairwiseOnDemand]: 353/356 looper letters, 58 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-04 07:54:26,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 300 flow [2023-08-04 07:54:26,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:54:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:54:26,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2023-08-04 07:54:26,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234082397003745 [2023-08-04 07:54:26,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 559 transitions. [2023-08-04 07:54:26,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 559 transitions. [2023-08-04 07:54:26,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:26,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 559 transitions. [2023-08-04 07:54:26,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:26,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 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 07:54:26,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 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 07:54:26,058 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 144 flow. Second operand 3 states and 559 transitions. [2023-08-04 07:54:26,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 300 flow [2023-08-04 07:54:26,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:54:26,066 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 146 flow [2023-08-04 07:54:26,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-08-04 07:54:26,067 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-08-04 07:54:26,067 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 146 flow [2023-08-04 07:54:26,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:26,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:26,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:26,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 07:54:26,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:26,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash -50258897, now seen corresponding path program 1 times [2023-08-04 07:54:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:26,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047680591] [2023-08-04 07:54:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:26,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:26,129 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 07:54:26,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:26,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047680591] [2023-08-04 07:54:26,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047680591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:54:26,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:54:26,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:54:26,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966679700] [2023-08-04 07:54:26,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:54:26,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:54:26,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:54:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:54:26,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 356 [2023-08-04 07:54:26,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:26,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:26,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 356 [2023-08-04 07:54:26,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:26,612 INFO L124 PetriNetUnfolderBase]: 4045/6242 cut-off events. [2023-08-04 07:54:26,612 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2023-08-04 07:54:26,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13172 conditions, 6242 events. 4045/6242 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 33136 event pairs, 2746 based on Foata normal form. 0/4465 useless extension candidates. Maximal degree in co-relation 12585. Up to 5663 conditions per place. [2023-08-04 07:54:26,652 INFO L140 encePairwiseOnDemand]: 353/356 looper letters, 73 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2023-08-04 07:54:26,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 378 flow [2023-08-04 07:54:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:54:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:54:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-08-04 07:54:26,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5383895131086143 [2023-08-04 07:54:26,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-08-04 07:54:26,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-08-04 07:54:26,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:26,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-08-04 07:54:26,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:26,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 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 07:54:26,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 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 07:54:26,659 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 146 flow. Second operand 3 states and 575 transitions. [2023-08-04 07:54:26,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 378 flow [2023-08-04 07:54:26,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 81 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:54:26,662 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 157 flow [2023-08-04 07:54:26,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2023-08-04 07:54:26,663 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2023-08-04 07:54:26,663 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 157 flow [2023-08-04 07:54:26,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:26,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:26,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:26,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 07:54:26,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:26,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:26,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2082571021, now seen corresponding path program 1 times [2023-08-04 07:54:26,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:26,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746797149] [2023-08-04 07:54:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:26,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:26,714 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 07:54:26,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:26,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746797149] [2023-08-04 07:54:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746797149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873208563] [2023-08-04 07:54:26,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:26,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:26,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:26,718 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 07:54:26,752 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 07:54:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:26,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:54:26,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:54:26,866 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 07:54:26,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:54:26,886 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 07:54:26,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873208563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:54:26,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:54:26,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 07:54:26,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15002065] [2023-08-04 07:54:26,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:54:26,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:54:26,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:26,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:54:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:54:26,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 356 [2023-08-04 07:54:26,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:26,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:26,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 356 [2023-08-04 07:54:26,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:26,944 INFO L124 PetriNetUnfolderBase]: 42/120 cut-off events. [2023-08-04 07:54:26,944 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 07:54:26,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 120 events. 42/120 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 380 event pairs, 0 based on Foata normal form. 19/130 useless extension candidates. Maximal degree in co-relation 289. Up to 78 conditions per place. [2023-08-04 07:54:26,945 INFO L140 encePairwiseOnDemand]: 353/356 looper letters, 29 selfloop transitions, 2 changer transitions 2/34 dead transitions. [2023-08-04 07:54:26,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 34 transitions, 181 flow [2023-08-04 07:54:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:54:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:54:26,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 694 transitions. [2023-08-04 07:54:26,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48735955056179775 [2023-08-04 07:54:26,949 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 694 transitions. [2023-08-04 07:54:26,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 694 transitions. [2023-08-04 07:54:26,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:26,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 694 transitions. [2023-08-04 07:54:26,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:26,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:26,954 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:26,954 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 157 flow. Second operand 4 states and 694 transitions. [2023-08-04 07:54:26,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 34 transitions, 181 flow [2023-08-04 07:54:26,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 34 transitions, 173 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:54:26,955 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 63 flow [2023-08-04 07:54:26,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=63, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-04 07:54:26,957 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -19 predicate places. [2023-08-04 07:54:26,958 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 63 flow [2023-08-04 07:54:26,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:26,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:26,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:26,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 07:54:27,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:27,164 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:27,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:27,165 INFO L85 PathProgramCache]: Analyzing trace with hash 619643559, now seen corresponding path program 1 times [2023-08-04 07:54:27,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:27,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544141489] [2023-08-04 07:54:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:27,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:27,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:27,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:27,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544141489] [2023-08-04 07:54:27,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544141489] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:27,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502194897] [2023-08-04 07:54:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:27,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:27,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:27,249 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 07:54:27,276 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 07:54:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:27,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 07:54:27,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:54:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:27,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:54:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:27,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502194897] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:54:27,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:54:27,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-04 07:54:27,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408875181] [2023-08-04 07:54:27,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:54:27,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-04 07:54:27,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-04 07:54:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-04 07:54:27,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 356 [2023-08-04 07:54:27,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 63 flow. Second operand has 10 states, 10 states have (on average 167.9) internal successors, (1679), 10 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:27,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:27,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 356 [2023-08-04 07:54:27,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:27,590 INFO L124 PetriNetUnfolderBase]: 70/172 cut-off events. [2023-08-04 07:54:27,591 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-04 07:54:27,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 172 events. 70/172 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 294 event pairs, 10 based on Foata normal form. 6/175 useless extension candidates. Maximal degree in co-relation 423. Up to 57 conditions per place. [2023-08-04 07:54:27,592 INFO L140 encePairwiseOnDemand]: 352/356 looper letters, 42 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2023-08-04 07:54:27,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 243 flow [2023-08-04 07:54:27,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 07:54:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 07:54:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1197 transitions. [2023-08-04 07:54:27,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803370786516854 [2023-08-04 07:54:27,595 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1197 transitions. [2023-08-04 07:54:27,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1197 transitions. [2023-08-04 07:54:27,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:27,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1197 transitions. [2023-08-04 07:54:27,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.0) internal successors, (1197), 7 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:27,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 356.0) internal successors, (2848), 8 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:27,603 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 356.0) internal successors, (2848), 8 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:27,604 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 63 flow. Second operand 7 states and 1197 transitions. [2023-08-04 07:54:27,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 243 flow [2023-08-04 07:54:27,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 49 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:54:27,605 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 104 flow [2023-08-04 07:54:27,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=104, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-04 07:54:27,606 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -13 predicate places. [2023-08-04 07:54:27,606 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 104 flow [2023-08-04 07:54:27,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 167.9) internal successors, (1679), 10 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:27,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:27,607 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:27,622 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 07:54:27,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:27,820 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:27,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:27,820 INFO L85 PathProgramCache]: Analyzing trace with hash -114162987, now seen corresponding path program 2 times [2023-08-04 07:54:27,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:27,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381775718] [2023-08-04 07:54:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:27,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:28,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:28,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381775718] [2023-08-04 07:54:28,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381775718] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:28,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453299907] [2023-08-04 07:54:28,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 07:54:28,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:28,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:28,036 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 07:54:28,038 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 07:54:28,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 07:54:28,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 07:54:28,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-04 07:54:28,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:54:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:28,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:54:28,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:28,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453299907] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:54:28,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:54:28,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-04 07:54:28,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458473613] [2023-08-04 07:54:28,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:54:28,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-04 07:54:28,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-04 07:54:28,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-04 07:54:28,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 356 [2023-08-04 07:54:28,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 104 flow. Second operand has 18 states, 18 states have (on average 167.94444444444446) internal successors, (3023), 18 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:28,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:28,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 356 [2023-08-04 07:54:28,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:28,644 INFO L124 PetriNetUnfolderBase]: 134/333 cut-off events. [2023-08-04 07:54:28,645 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-08-04 07:54:28,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 904 conditions, 333 events. 134/333 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 560 event pairs, 10 based on Foata normal form. 12/342 useless extension candidates. Maximal degree in co-relation 894. Up to 66 conditions per place. [2023-08-04 07:54:28,649 INFO L140 encePairwiseOnDemand]: 352/356 looper letters, 82 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2023-08-04 07:54:28,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 97 transitions, 515 flow [2023-08-04 07:54:28,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-04 07:54:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-04 07:54:28,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2559 transitions. [2023-08-04 07:54:28,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47921348314606743 [2023-08-04 07:54:28,656 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2559 transitions. [2023-08-04 07:54:28,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2559 transitions. [2023-08-04 07:54:28,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:28,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2559 transitions. [2023-08-04 07:54:28,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 170.6) internal successors, (2559), 15 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:28,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 356.0) internal successors, (5696), 16 states have internal predecessors, (5696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:28,673 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 356.0) internal successors, (5696), 16 states have internal predecessors, (5696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:28,673 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 104 flow. Second operand 15 states and 2559 transitions. [2023-08-04 07:54:28,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 97 transitions, 515 flow [2023-08-04 07:54:28,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 97 transitions, 509 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-04 07:54:28,677 INFO L231 Difference]: Finished difference. Result has 49 places, 31 transitions, 210 flow [2023-08-04 07:54:28,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=31} [2023-08-04 07:54:28,679 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-08-04 07:54:28,679 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 31 transitions, 210 flow [2023-08-04 07:54:28,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 167.94444444444446) internal successors, (3023), 18 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:28,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:28,682 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:28,689 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 07:54:28,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:28,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:28,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:28,889 INFO L85 PathProgramCache]: Analyzing trace with hash 184659761, now seen corresponding path program 3 times [2023-08-04 07:54:28,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:28,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570542284] [2023-08-04 07:54:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:28,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 7 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:29,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:29,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570542284] [2023-08-04 07:54:29,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570542284] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:29,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671379192] [2023-08-04 07:54:29,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 07:54:29,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:29,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:29,361 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 07:54:29,385 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 07:54:29,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-08-04 07:54:29,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 07:54:29,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-04 07:54:29,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:54:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 7 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:29,758 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:54:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 7 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:30,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671379192] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:54:30,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:54:30,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-08-04 07:54:30,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478829518] [2023-08-04 07:54:30,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:54:30,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-04 07:54:30,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-04 07:54:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-08-04 07:54:30,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 356 [2023-08-04 07:54:30,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 31 transitions, 210 flow. Second operand has 34 states, 34 states have (on average 167.97058823529412) internal successors, (5711), 34 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:30,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:30,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 356 [2023-08-04 07:54:30,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:30,666 INFO L124 PetriNetUnfolderBase]: 262/653 cut-off events. [2023-08-04 07:54:30,666 INFO L125 PetriNetUnfolderBase]: For 858/858 co-relation queries the response was YES. [2023-08-04 07:54:30,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 653 events. 262/653 cut-off events. For 858/858 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1072 event pairs, 10 based on Foata normal form. 24/674 useless extension candidates. Maximal degree in co-relation 1856. Up to 130 conditions per place. [2023-08-04 07:54:30,670 INFO L140 encePairwiseOnDemand]: 352/356 looper letters, 162 selfloop transitions, 30 changer transitions 0/193 dead transitions. [2023-08-04 07:54:30,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 193 transitions, 1087 flow [2023-08-04 07:54:30,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-04 07:54:30,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-04 07:54:30,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 5283 transitions. [2023-08-04 07:54:30,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47870605291772383 [2023-08-04 07:54:30,683 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 5283 transitions. [2023-08-04 07:54:30,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 5283 transitions. [2023-08-04 07:54:30,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:30,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 5283 transitions. [2023-08-04 07:54:30,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 170.41935483870967) internal successors, (5283), 31 states have internal predecessors, (5283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:30,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 356.0) internal successors, (11392), 32 states have internal predecessors, (11392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:30,715 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 356.0) internal successors, (11392), 32 states have internal predecessors, (11392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:30,715 INFO L175 Difference]: Start difference. First operand has 49 places, 31 transitions, 210 flow. Second operand 31 states and 5283 transitions. [2023-08-04 07:54:30,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 193 transitions, 1087 flow [2023-08-04 07:54:30,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 193 transitions, 1001 flow, removed 36 selfloop flow, removed 7 redundant places. [2023-08-04 07:54:30,723 INFO L231 Difference]: Finished difference. Result has 80 places, 47 transitions, 366 flow [2023-08-04 07:54:30,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=366, PETRI_PLACES=80, PETRI_TRANSITIONS=47} [2023-08-04 07:54:30,724 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2023-08-04 07:54:30,724 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 47 transitions, 366 flow [2023-08-04 07:54:30,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 167.97058823529412) internal successors, (5711), 34 states have internal predecessors, (5711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:30,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:30,738 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:30,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 07:54:30,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:30,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:30,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:30,946 INFO L85 PathProgramCache]: Analyzing trace with hash -68700183, now seen corresponding path program 4 times [2023-08-04 07:54:30,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:30,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735468442] [2023-08-04 07:54:30,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:30,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 15 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:32,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:32,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735468442] [2023-08-04 07:54:32,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735468442] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:32,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064324613] [2023-08-04 07:54:32,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-04 07:54:32,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:32,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:32,178 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 07:54:32,180 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 07:54:32,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-04 07:54:32,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 07:54:32,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-04 07:54:32,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:54:32,654 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 15 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:32,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:54:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 15 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:33,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064324613] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:54:33,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:54:33,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 65 [2023-08-04 07:54:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557761892] [2023-08-04 07:54:33,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:54:33,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-08-04 07:54:33,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:33,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-08-04 07:54:33,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2023-08-04 07:54:33,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 356 [2023-08-04 07:54:33,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 47 transitions, 366 flow. Second operand has 66 states, 66 states have (on average 167.9848484848485) internal successors, (11087), 66 states have internal predecessors, (11087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:33,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:33,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 356 [2023-08-04 07:54:33,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:35,245 INFO L124 PetriNetUnfolderBase]: 518/1293 cut-off events. [2023-08-04 07:54:35,245 INFO L125 PetriNetUnfolderBase]: For 5739/5739 co-relation queries the response was YES. [2023-08-04 07:54:35,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3688 conditions, 1293 events. 518/1293 cut-off events. For 5739/5739 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 2096 event pairs, 10 based on Foata normal form. 48/1338 useless extension candidates. Maximal degree in co-relation 3666. Up to 258 conditions per place. [2023-08-04 07:54:35,252 INFO L140 encePairwiseOnDemand]: 352/356 looper letters, 322 selfloop transitions, 62 changer transitions 0/385 dead transitions. [2023-08-04 07:54:35,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 385 transitions, 2155 flow [2023-08-04 07:54:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-04 07:54:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-04 07:54:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 10731 transitions. [2023-08-04 07:54:35,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47846441947565543 [2023-08-04 07:54:35,281 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 10731 transitions. [2023-08-04 07:54:35,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 10731 transitions. [2023-08-04 07:54:35,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:35,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 10731 transitions. [2023-08-04 07:54:35,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 170.33333333333334) internal successors, (10731), 63 states have internal predecessors, (10731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:35,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 356.0) internal successors, (22784), 64 states have internal predecessors, (22784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:35,344 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 356.0) internal successors, (22784), 64 states have internal predecessors, (22784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:35,344 INFO L175 Difference]: Start difference. First operand has 80 places, 47 transitions, 366 flow. Second operand 63 states and 10731 transitions. [2023-08-04 07:54:35,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 385 transitions, 2155 flow [2023-08-04 07:54:35,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 385 transitions, 1993 flow, removed 67 selfloop flow, removed 14 redundant places. [2023-08-04 07:54:35,357 INFO L231 Difference]: Finished difference. Result has 144 places, 79 transitions, 686 flow [2023-08-04 07:54:35,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=686, PETRI_PLACES=144, PETRI_TRANSITIONS=79} [2023-08-04 07:54:35,361 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 99 predicate places. [2023-08-04 07:54:35,361 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 79 transitions, 686 flow [2023-08-04 07:54:35,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 167.9848484848485) internal successors, (11087), 66 states have internal predecessors, (11087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:35,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:35,364 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:35,371 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 07:54:35,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:35,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:35,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash -741439143, now seen corresponding path program 5 times [2023-08-04 07:54:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709348268] [2023-08-04 07:54:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:35,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:39,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3813 backedges. 31 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:39,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:39,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709348268] [2023-08-04 07:54:39,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709348268] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:39,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819877173] [2023-08-04 07:54:39,502 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-04 07:54:39,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:39,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:39,504 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 07:54:39,506 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 07:56:20,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-08-04 07:56:20,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 07:56:20,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 64 conjunts are in the unsatisfiable core [2023-08-04 07:56:20,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:56:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3813 backedges. 31 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:56:20,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:56:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3813 backedges. 31 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:56:23,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819877173] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:56:23,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:56:23,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 129 [2023-08-04 07:56:23,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206829017] [2023-08-04 07:56:23,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:56:23,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-08-04 07:56:23,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:56:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-08-04 07:56:23,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2023-08-04 07:56:24,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 356 [2023-08-04 07:56:24,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 79 transitions, 686 flow. Second operand has 130 states, 130 states have (on average 167.9923076923077) internal successors, (21839), 130 states have internal predecessors, (21839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:56:24,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:56:24,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 356 [2023-08-04 07:56:24,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:56:28,595 INFO L124 PetriNetUnfolderBase]: 1030/2573 cut-off events. [2023-08-04 07:56:28,595 INFO L125 PetriNetUnfolderBase]: For 46803/46803 co-relation queries the response was YES. [2023-08-04 07:56:28,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7336 conditions, 2573 events. 1030/2573 cut-off events. For 46803/46803 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 4141 event pairs, 10 based on Foata normal form. 96/2666 useless extension candidates. Maximal degree in co-relation 7298. Up to 514 conditions per place. [2023-08-04 07:56:28,616 INFO L140 encePairwiseOnDemand]: 352/356 looper letters, 642 selfloop transitions, 126 changer transitions 0/769 dead transitions. [2023-08-04 07:56:28,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 769 transitions, 4299 flow [2023-08-04 07:56:28,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-08-04 07:56:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-08-04 07:56:28,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 21627 transitions. [2023-08-04 07:56:28,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47834645669291337 [2023-08-04 07:56:28,639 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 21627 transitions. [2023-08-04 07:56:28,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 21627 transitions. [2023-08-04 07:56:28,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:56:28,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 21627 transitions. [2023-08-04 07:56:28,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 170.29133858267716) internal successors, (21627), 127 states have internal predecessors, (21627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:56:28,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 356.0) internal successors, (45568), 128 states have internal predecessors, (45568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:56:28,836 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 356.0) internal successors, (45568), 128 states have internal predecessors, (45568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:56:28,836 INFO L175 Difference]: Start difference. First operand has 144 places, 79 transitions, 686 flow. Second operand 127 states and 21627 transitions. [2023-08-04 07:56:28,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 769 transitions, 4299 flow [2023-08-04 07:56:28,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 769 transitions, 3977 flow, removed 131 selfloop flow, removed 30 redundant places. [2023-08-04 07:56:28,878 INFO L231 Difference]: Finished difference. Result has 272 places, 143 transitions, 1326 flow [2023-08-04 07:56:28,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=1326, PETRI_PLACES=272, PETRI_TRANSITIONS=143} [2023-08-04 07:56:28,879 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 227 predicate places. [2023-08-04 07:56:28,879 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 143 transitions, 1326 flow [2023-08-04 07:56:28,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 167.9923076923077) internal successors, (21839), 130 states have internal predecessors, (21839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:56:28,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:56:28,885 INFO L208 CegarLoopForPetriNet]: trace histogram [64, 63, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2023-08-04 07:56:28,912 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 07:56:29,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:56:29,110 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:56:29,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:56:29,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1678191673, now seen corresponding path program 6 times [2023-08-04 07:56:29,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:56:29,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219500746] [2023-08-04 07:56:29,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:56:29,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:56:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:56:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 15813 backedges. 63 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:56:41,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:56:41,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219500746] [2023-08-04 07:56:41,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219500746] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:56:41,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797763929] [2023-08-04 07:56:41,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-04 07:56:41,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:56:41,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:56:41,640 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 07:56:41,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Received shutdown request... [2023-08-04 08:08:40,615 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 08:08:40,616 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 08:08:41,625 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 08:08:41,821 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forcibly destroying the process [2023-08-04 08:08:41,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 137 [2023-08-04 08:08:41,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 08:08:41,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:08:41,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2023-08-04 08:08:41,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108547956] [2023-08-04 08:08:41,849 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-04 08:08:41,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2023-08-04 08:08:41,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:08:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2023-08-04 08:08:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4224, Invalid=12288, Unknown=0, NotChecked=0, Total=16512 [2023-08-04 08:08:41,859 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 08:08:41,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 08:08:41,860 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-04 08:08:41,861 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 08:08:41,861 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 08:08:41,861 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 08:08:41,862 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1] [2023-08-04 08:08:41,863 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2023-08-04 08:08:41,866 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-04 08:08:41,866 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 08:08:41,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 08:08:41 BasicIcfg [2023-08-04 08:08:41,868 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 08:08:41,869 INFO L158 Benchmark]: Toolchain (without parser) took 862679.93ms. Allocated memory was 320.9MB in the beginning and 952.1MB in the end (delta: 631.2MB). Free memory was 270.9MB in the beginning and 497.3MB in the end (delta: -226.4MB). Peak memory consumption was 406.6MB. Max. memory is 16.0GB. [2023-08-04 08:08:41,869 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 320.9MB. Free memory is still 274.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 08:08:41,869 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.76ms. Allocated memory is still 320.9MB. Free memory was 270.6MB in the beginning and 240.6MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-04 08:08:41,869 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.62ms. Allocated memory is still 320.9MB. Free memory was 240.6MB in the beginning and 237.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-04 08:08:41,870 INFO L158 Benchmark]: Boogie Preprocessor took 47.57ms. Allocated memory is still 320.9MB. Free memory was 237.8MB in the beginning and 235.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 08:08:41,870 INFO L158 Benchmark]: RCFGBuilder took 505.87ms. Allocated memory was 320.9MB in the beginning and 434.1MB in the end (delta: 113.2MB). Free memory was 235.7MB in the beginning and 389.8MB in the end (delta: -154.1MB). Peak memory consumption was 13.1MB. Max. memory is 16.0GB. [2023-08-04 08:08:41,870 INFO L158 Benchmark]: TraceAbstraction took 861409.84ms. Allocated memory was 434.1MB in the beginning and 952.1MB in the end (delta: 518.0MB). Free memory was 389.0MB in the beginning and 497.3MB in the end (delta: -108.4MB). Peak memory consumption was 410.3MB. Max. memory is 16.0GB. [2023-08-04 08:08:41,872 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 320.9MB. Free memory is still 274.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 640.76ms. Allocated memory is still 320.9MB. Free memory was 270.6MB in the beginning and 240.6MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 70.62ms. Allocated memory is still 320.9MB. Free memory was 240.6MB in the beginning and 237.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.57ms. Allocated memory is still 320.9MB. Free memory was 237.8MB in the beginning and 235.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 505.87ms. Allocated memory was 320.9MB in the beginning and 434.1MB in the end (delta: 113.2MB). Free memory was 235.7MB in the beginning and 389.8MB in the end (delta: -154.1MB). Peak memory consumption was 13.1MB. Max. memory is 16.0GB. * TraceAbstraction took 861409.84ms. Allocated memory was 434.1MB in the beginning and 952.1MB in the end (delta: 518.0MB). Free memory was 389.0MB in the beginning and 497.3MB in the end (delta: -108.4MB). Peak memory consumption was 410.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 753]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [753] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 175 PlacesBefore, 45 PlacesAfterwards, 188 TransitionsBefore, 49 TransitionsAfterwards, 15606 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 104 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 31 ConcurrentYvCompositions, 9 ChoiceCompositions, 168 TotalNumberOfCompositions, 22758 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16740, independent: 16506, independent conditional: 0, independent unconditional: 16506, dependent: 234, dependent conditional: 0, dependent unconditional: 234, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8525, independent: 8474, independent conditional: 0, independent unconditional: 8474, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16740, independent: 8032, independent conditional: 0, independent unconditional: 8032, dependent: 183, dependent conditional: 0, dependent unconditional: 183, unknown: 8525, unknown conditional: 0, unknown unconditional: 8525] , Statistics on independence cache: Total cache size (in pairs): 354, Positive cache size: 336, Positive conditional cache size: 0, Positive unconditional cache size: 336, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 270 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 861.3s, OverallIterations: 10, TraceHistogramMax: 64, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3453 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3335 mSDsluCounter, 1167 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1110 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4463 IncrementalHoareTripleChecker+Invalid, 4493 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 57 mSDtfsCounter, 4463 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1369 GetRequests, 872 SyntacticMatches, 2 SemanticMatches, 495 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14586 ImplicationChecksByTransitivity, 12.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1326occurred in iteration=9, InterpolantAutomatonStates: 256, 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: 0.3s SsaConstructionTime, 101.4s SatisfiabilityAnalysisTime, 23.2s InterpolantComputationTime, 1544 NumberOfCodeBlocks, 1544 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 2025 ConstructedInterpolants, 0 QuantifiedInterpolants, 5967 SizeOfPredicates, 57 NumberOfNonLiveVariables, 3898 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 22 InterpolantComputations, 3 PerfectInterpolantSequences, 234/30585 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