/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_longer-2_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 07:53:56,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 07:53:56,920 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 07:53:56,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 07:53:56,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 07:53:56,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 07:53:56,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 07:53:56,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 07:53:56,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 07:53:56,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 07:53:56,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 07:53:56,961 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 07:53:56,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 07:53:56,963 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 07:53:56,963 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 07:53:56,963 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 07:53:56,964 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 07:53:56,964 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 07:53:56,964 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 07:53:56,964 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 07:53:56,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 07:53:56,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 07:53:56,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 07:53:56,966 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 07:53:56,966 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 07:53:56,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 07:53:56,966 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 07:53:56,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 07:53:56,967 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 07:53:56,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 07:53:56,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:53:56,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 07:53:56,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 07:53:56,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 07:53:56,969 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 07:53:56,969 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 07:53:56,969 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 07:53:56,969 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 07:53:56,970 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 07:53:56,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 07:53:56,970 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 07:53:56,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 07:53:57,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 07:53:57,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 07:53:57,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 07:53:57,249 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 07:53:57,249 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 07:53:57,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread_stack_longer-2_bound2.i [2023-08-04 07:53:58,433 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 07:53:58,723 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 07:53:58,724 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread_stack_longer-2_bound2.i [2023-08-04 07:53:58,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af40c6f3b/ffa93988bd8f46bb946a3cf5b78a4b12/FLAG1c5f2a58f [2023-08-04 07:53:58,756 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af40c6f3b/ffa93988bd8f46bb946a3cf5b78a4b12 [2023-08-04 07:53:58,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 07:53:58,759 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 07:53:58,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 07:53:58,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 07:53:58,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 07:53:58,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:53:58" (1/1) ... [2023-08-04 07:53:58,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fcb17c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:58, skipping insertion in model container [2023-08-04 07:53:58,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:53:58" (1/1) ... [2023-08-04 07:53:58,815 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 07:53:59,242 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_longer-2_bound2.i[41529,41542] [2023-08-04 07:53:59,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:53:59,301 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 07:53:59,341 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 07:53:59,343 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 07:53:59,350 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-04 07:53:59,355 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_longer-2_bound2.i[41529,41542] [2023-08-04 07:53:59,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:53:59,462 INFO L206 MainTranslator]: Completed translation [2023-08-04 07:53:59,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59 WrapperNode [2023-08-04 07:53:59,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 07:53:59,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 07:53:59,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 07:53:59,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 07:53:59,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (1/1) ... [2023-08-04 07:53:59,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (1/1) ... [2023-08-04 07:53:59,517 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 181 [2023-08-04 07:53:59,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 07:53:59,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 07:53:59,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 07:53:59,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 07:53:59,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (1/1) ... [2023-08-04 07:53:59,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (1/1) ... [2023-08-04 07:53:59,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (1/1) ... [2023-08-04 07:53:59,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (1/1) ... [2023-08-04 07:53:59,538 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (1/1) ... [2023-08-04 07:53:59,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (1/1) ... [2023-08-04 07:53:59,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (1/1) ... [2023-08-04 07:53:59,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (1/1) ... [2023-08-04 07:53:59,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 07:53:59,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 07:53:59,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 07:53:59,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 07:53:59,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (1/1) ... [2023-08-04 07:53:59,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:53:59,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:53:59,590 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 07:53:59,595 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 07:53:59,632 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-04 07:53:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-04 07:53:59,633 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-04 07:53:59,633 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-04 07:53:59,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 07:53:59,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 07:53:59,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 07:53:59,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 07:53:59,633 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 07:53:59,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 07:53:59,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 07:53:59,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 07:53:59,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 07:53:59,635 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 07:53:59,757 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 07:53:59,759 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 07:53:59,969 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 07:53:59,977 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 07:53:59,978 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-04 07:53:59,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:53:59 BoogieIcfgContainer [2023-08-04 07:53:59,980 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 07:53:59,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 07:53:59,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 07:53:59,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 07:53:59,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 07:53:58" (1/3) ... [2023-08-04 07:53:59,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b26e378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:53:59, skipping insertion in model container [2023-08-04 07:53:59,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:53:59" (2/3) ... [2023-08-04 07:53:59,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b26e378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:53:59, skipping insertion in model container [2023-08-04 07:53:59,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:53:59" (3/3) ... [2023-08-04 07:53:59,988 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_stack_longer-2_bound2.i [2023-08-04 07:53:59,995 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 07:54:00,005 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 07:54:00,005 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 07:54:00,006 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 07:54:00,100 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-04 07:54:00,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 181 transitions, 384 flow [2023-08-04 07:54:00,270 INFO L124 PetriNetUnfolderBase]: 37/330 cut-off events. [2023-08-04 07:54:00,270 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 07:54:00,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 330 events. 37/330 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1442 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-08-04 07:54:00,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 181 transitions, 384 flow [2023-08-04 07:54:00,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 181 transitions, 384 flow [2023-08-04 07:54:00,306 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:54:00,313 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 181 transitions, 384 flow [2023-08-04 07:54:00,317 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 181 transitions, 384 flow [2023-08-04 07:54:00,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 181 transitions, 384 flow [2023-08-04 07:54:00,367 INFO L124 PetriNetUnfolderBase]: 37/330 cut-off events. [2023-08-04 07:54:00,368 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 07:54:00,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 330 events. 37/330 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1442 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-08-04 07:54:00,380 INFO L119 LiptonReduction]: Number of co-enabled transitions 14280 [2023-08-04 07:54:04,145 INFO L134 LiptonReduction]: Checked pairs total: 21109 [2023-08-04 07:54:04,145 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-08-04 07:54:04,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:54:04,166 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;@468e6fff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:54:04,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 07:54:04,172 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:54:04,172 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2023-08-04 07:54:04,172 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 07:54:04,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:04,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:04,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:04,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:04,178 INFO L85 PathProgramCache]: Analyzing trace with hash 571241624, now seen corresponding path program 1 times [2023-08-04 07:54:04,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:04,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074417052] [2023-08-04 07:54:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:04,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:04,432 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 07:54:04,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:04,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074417052] [2023-08-04 07:54:04,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074417052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:54:04,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:54:04,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:54:04,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14026673] [2023-08-04 07:54:04,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:54:04,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:54:04,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:04,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:54:04,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:54:04,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 345 [2023-08-04 07:54:04,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:04,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:04,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 345 [2023-08-04 07:54:04,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:04,996 INFO L124 PetriNetUnfolderBase]: 2994/4704 cut-off events. [2023-08-04 07:54:04,996 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2023-08-04 07:54:05,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9431 conditions, 4704 events. 2994/4704 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 22717 event pairs, 1216 based on Foata normal form. 90/3392 useless extension candidates. Maximal degree in co-relation 8706. Up to 2926 conditions per place. [2023-08-04 07:54:05,035 INFO L140 encePairwiseOnDemand]: 340/345 looper letters, 72 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-08-04 07:54:05,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 80 transitions, 347 flow [2023-08-04 07:54:05,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:54:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:54:05,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2023-08-04 07:54:05,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294685990338164 [2023-08-04 07:54:05,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2023-08-04 07:54:05,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2023-08-04 07:54:05,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:05,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2023-08-04 07:54:05,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 07:54:05,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 07:54:05,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 07:54:05,076 INFO L175 Difference]: Start difference. First operand has 44 places, 48 transitions, 118 flow. Second operand 3 states and 548 transitions. [2023-08-04 07:54:05,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 80 transitions, 347 flow [2023-08-04 07:54:05,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 80 transitions, 347 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:54:05,085 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 135 flow [2023-08-04 07:54:05,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-08-04 07:54:05,091 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-08-04 07:54:05,091 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 135 flow [2023-08-04 07:54:05,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:05,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:05,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:05,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 07:54:05,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:05,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1773436019, now seen corresponding path program 1 times [2023-08-04 07:54:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479062384] [2023-08-04 07:54:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:05,250 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 07:54:05,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:05,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479062384] [2023-08-04 07:54:05,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479062384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:54:05,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:54:05,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:54:05,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413936786] [2023-08-04 07:54:05,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:54:05,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:54:05,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:05,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:54:05,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:54:05,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 345 [2023-08-04 07:54:05,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 07:54:05,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:05,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 345 [2023-08-04 07:54:05,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:05,731 INFO L124 PetriNetUnfolderBase]: 3272/5161 cut-off events. [2023-08-04 07:54:05,732 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2023-08-04 07:54:05,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10816 conditions, 5161 events. 3272/5161 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 27047 event pairs, 1749 based on Foata normal form. 0/3852 useless extension candidates. Maximal degree in co-relation 10059. Up to 4589 conditions per place. [2023-08-04 07:54:05,764 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 70 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-08-04 07:54:05,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 353 flow [2023-08-04 07:54:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:54:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:54:05,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2023-08-04 07:54:05,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342995169082125 [2023-08-04 07:54:05,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2023-08-04 07:54:05,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2023-08-04 07:54:05,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:05,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2023-08-04 07:54:05,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states 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 07:54:05,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 07:54:05,771 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 07:54:05,771 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 135 flow. Second operand 3 states and 553 transitions. [2023-08-04 07:54:05,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 353 flow [2023-08-04 07:54:05,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:54:05,776 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 147 flow [2023-08-04 07:54:05,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2023-08-04 07:54:05,777 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2023-08-04 07:54:05,777 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 147 flow [2023-08-04 07:54:05,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 07:54:05,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:05,778 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:05,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 07:54:05,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:05,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:05,779 INFO L85 PathProgramCache]: Analyzing trace with hash 41573428, now seen corresponding path program 1 times [2023-08-04 07:54:05,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:05,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157085859] [2023-08-04 07:54:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:05,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:05,880 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 07:54:05,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:05,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157085859] [2023-08-04 07:54:05,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157085859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:05,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902247614] [2023-08-04 07:54:05,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:05,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:05,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:05,893 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 07:54:05,920 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 07:54:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:06,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 07:54:06,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:54:06,102 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 07:54:06,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:54:06,154 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 07:54:06,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902247614] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:54:06,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:54:06,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-04 07:54:06,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601633012] [2023-08-04 07:54:06,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:54:06,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-04 07:54:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:06,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-04 07:54:06,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-04 07:54:06,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 345 [2023-08-04 07:54:06,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 147 flow. Second operand has 10 states, 10 states have (on average 156.7) internal successors, (1567), 10 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states 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 07:54:06,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:06,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 345 [2023-08-04 07:54:06,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:07,692 INFO L124 PetriNetUnfolderBase]: 8165/12709 cut-off events. [2023-08-04 07:54:07,693 INFO L125 PetriNetUnfolderBase]: For 4002/4002 co-relation queries the response was YES. [2023-08-04 07:54:07,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28749 conditions, 12709 events. 8165/12709 cut-off events. For 4002/4002 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 72460 event pairs, 1224 based on Foata normal form. 342/10047 useless extension candidates. Maximal degree in co-relation 26908. Up to 3655 conditions per place. [2023-08-04 07:54:07,762 INFO L140 encePairwiseOnDemand]: 337/345 looper letters, 277 selfloop transitions, 26 changer transitions 3/310 dead transitions. [2023-08-04 07:54:07,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 310 transitions, 1454 flow [2023-08-04 07:54:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-04 07:54:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-04 07:54:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2145 transitions. [2023-08-04 07:54:07,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181159420289855 [2023-08-04 07:54:07,767 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2145 transitions. [2023-08-04 07:54:07,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2145 transitions. [2023-08-04 07:54:07,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:07,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2145 transitions. [2023-08-04 07:54:07,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 178.75) internal successors, (2145), 12 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states 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 07:54:07,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 345.0) internal successors, (4485), 13 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states 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 07:54:07,781 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 345.0) internal successors, (4485), 13 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states 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 07:54:07,781 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 147 flow. Second operand 12 states and 2145 transitions. [2023-08-04 07:54:07,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 310 transitions, 1454 flow [2023-08-04 07:54:07,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 310 transitions, 1439 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:54:07,798 INFO L231 Difference]: Finished difference. Result has 67 places, 75 transitions, 359 flow [2023-08-04 07:54:07,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=359, PETRI_PLACES=67, PETRI_TRANSITIONS=75} [2023-08-04 07:54:07,799 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2023-08-04 07:54:07,800 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 75 transitions, 359 flow [2023-08-04 07:54:07,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 156.7) internal successors, (1567), 10 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states 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 07:54:07,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:07,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:07,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 07:54:08,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:08,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:08,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:08,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1007568141, now seen corresponding path program 1 times [2023-08-04 07:54:08,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:08,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478256165] [2023-08-04 07:54:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:08,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:08,067 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 07:54:08,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:08,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478256165] [2023-08-04 07:54:08,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478256165] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:08,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091701699] [2023-08-04 07:54:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:08,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:08,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:08,069 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 07:54:08,072 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 07:54:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:08,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:54:08,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:54:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:54:08,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:54:08,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091701699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:54:08,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:54:08,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:54:08,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210538828] [2023-08-04 07:54:08,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:54:08,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:54:08,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:08,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:54:08,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:54:08,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 345 [2023-08-04 07:54:08,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 75 transitions, 359 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 07:54:08,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:08,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 345 [2023-08-04 07:54:08,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:09,639 INFO L124 PetriNetUnfolderBase]: 9996/15601 cut-off events. [2023-08-04 07:54:09,639 INFO L125 PetriNetUnfolderBase]: For 12717/12717 co-relation queries the response was YES. [2023-08-04 07:54:09,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40278 conditions, 15601 events. 9996/15601 cut-off events. For 12717/12717 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 92343 event pairs, 4891 based on Foata normal form. 316/12282 useless extension candidates. Maximal degree in co-relation 37622. Up to 11173 conditions per place. [2023-08-04 07:54:09,746 INFO L140 encePairwiseOnDemand]: 339/345 looper letters, 102 selfloop transitions, 11 changer transitions 0/117 dead transitions. [2023-08-04 07:54:09,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 117 transitions, 728 flow [2023-08-04 07:54:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:54:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:54:09,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 556 transitions. [2023-08-04 07:54:09,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371980676328503 [2023-08-04 07:54:09,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 556 transitions. [2023-08-04 07:54:09,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 556 transitions. [2023-08-04 07:54:09,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:09,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 556 transitions. [2023-08-04 07:54:09,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:54:09,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 07:54:09,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 07:54:09,753 INFO L175 Difference]: Start difference. First operand has 67 places, 75 transitions, 359 flow. Second operand 3 states and 556 transitions. [2023-08-04 07:54:09,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 117 transitions, 728 flow [2023-08-04 07:54:09,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 117 transitions, 717 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-04 07:54:09,838 INFO L231 Difference]: Finished difference. Result has 69 places, 79 transitions, 452 flow [2023-08-04 07:54:09,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=452, PETRI_PLACES=69, PETRI_TRANSITIONS=79} [2023-08-04 07:54:09,840 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 25 predicate places. [2023-08-04 07:54:09,840 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 79 transitions, 452 flow [2023-08-04 07:54:09,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 07:54:09,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:09,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:09,848 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 07:54:10,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 07:54:10,046 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:10,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:10,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1591812469, now seen corresponding path program 1 times [2023-08-04 07:54:10,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:10,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890770537] [2023-08-04 07:54:10,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:10,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:10,097 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 07:54:10,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890770537] [2023-08-04 07:54:10,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890770537] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:10,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279725399] [2023-08-04 07:54:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:10,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:10,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:10,100 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 07:54:10,102 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 07:54:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:10,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:54:10,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:54:10,212 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 07:54:10,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:54:10,234 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 07:54:10,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279725399] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:54:10,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:54:10,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 07:54:10,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843834804] [2023-08-04 07:54:10,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:54:10,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:54:10,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:10,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:54:10,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:54:10,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 345 [2023-08-04 07:54:10,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 07:54:10,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:10,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 345 [2023-08-04 07:54:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:10,315 INFO L124 PetriNetUnfolderBase]: 89/255 cut-off events. [2023-08-04 07:54:10,315 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2023-08-04 07:54:10,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 255 events. 89/255 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 847 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 646. Up to 168 conditions per place. [2023-08-04 07:54:10,316 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 41 selfloop transitions, 2 changer transitions 2/46 dead transitions. [2023-08-04 07:54:10,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 355 flow [2023-08-04 07:54:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:54:10,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:54:10,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 665 transitions. [2023-08-04 07:54:10,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48188405797101447 [2023-08-04 07:54:10,319 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 665 transitions. [2023-08-04 07:54:10,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 665 transitions. [2023-08-04 07:54:10,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:10,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 665 transitions. [2023-08-04 07:54:10,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 166.25) internal successors, (665), 4 states have internal predecessors, (665), 0 states have call successors, (0), 0 states 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 07:54:10,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 07:54:10,323 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 07:54:10,323 INFO L175 Difference]: Start difference. First operand has 69 places, 79 transitions, 452 flow. Second operand 4 states and 665 transitions. [2023-08-04 07:54:10,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 355 flow [2023-08-04 07:54:10,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 300 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-08-04 07:54:10,325 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 115 flow [2023-08-04 07:54:10,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2023-08-04 07:54:10,326 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -7 predicate places. [2023-08-04 07:54:10,326 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 115 flow [2023-08-04 07:54:10,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 07:54:10,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:10,327 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:10,335 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 07:54:10,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:10,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:10,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:10,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1771809868, now seen corresponding path program 2 times [2023-08-04 07:54:10,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:10,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572311087] [2023-08-04 07:54:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:10,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:10,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:10,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572311087] [2023-08-04 07:54:10,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572311087] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:10,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410709707] [2023-08-04 07:54:10,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 07:54:10,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:10,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:10,743 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 07:54:10,745 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 07:54:10,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 07:54:10,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 07:54:10,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-04 07:54:10,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:54:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:10,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:54:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:11,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410709707] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:54:11,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:54:11,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-04 07:54:11,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520167043] [2023-08-04 07:54:11,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:54:11,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-04 07:54:11,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:11,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-04 07:54:11,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-04 07:54:11,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 345 [2023-08-04 07:54:11,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 115 flow. Second operand has 18 states, 18 states have (on average 156.61111111111111) internal successors, (2819), 18 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states 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 07:54:11,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:11,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 345 [2023-08-04 07:54:11,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:11,341 INFO L124 PetriNetUnfolderBase]: 135/331 cut-off events. [2023-08-04 07:54:11,342 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-08-04 07:54:11,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 331 events. 135/331 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 597 event pairs, 10 based on Foata normal form. 12/340 useless extension candidates. Maximal degree in co-relation 895. Up to 85 conditions per place. [2023-08-04 07:54:11,343 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 77 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2023-08-04 07:54:11,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 92 transitions, 511 flow [2023-08-04 07:54:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-04 07:54:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-04 07:54:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2387 transitions. [2023-08-04 07:54:11,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461256038647343 [2023-08-04 07:54:11,350 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2387 transitions. [2023-08-04 07:54:11,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2387 transitions. [2023-08-04 07:54:11,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:11,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2387 transitions. [2023-08-04 07:54:11,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 159.13333333333333) internal successors, (2387), 15 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states 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 07:54:11,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 345.0) internal successors, (5520), 16 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states 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 07:54:11,363 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 345.0) internal successors, (5520), 16 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states 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 07:54:11,364 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 115 flow. Second operand 15 states and 2387 transitions. [2023-08-04 07:54:11,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 92 transitions, 511 flow [2023-08-04 07:54:11,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 92 transitions, 495 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:54:11,366 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 218 flow [2023-08-04 07:54:11,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2023-08-04 07:54:11,367 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2023-08-04 07:54:11,367 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 218 flow [2023-08-04 07:54:11,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 156.61111111111111) internal successors, (2819), 18 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states 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 07:54:11,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:11,369 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:11,381 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 07:54:11,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:11,579 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:11,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:11,580 INFO L85 PathProgramCache]: Analyzing trace with hash 161145524, now seen corresponding path program 3 times [2023-08-04 07:54:11,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:11,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525783181] [2023-08-04 07:54:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:11,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:12,177 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:12,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:12,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525783181] [2023-08-04 07:54:12,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525783181] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:12,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447186058] [2023-08-04 07:54:12,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 07:54:12,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:12,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:12,180 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 07:54:12,182 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 07:54:12,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-08-04 07:54:12,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 07:54:12,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-04 07:54:12,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:54:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:12,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:54:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 7 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:12,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447186058] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:54:12,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:54:12,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-08-04 07:54:12,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294038784] [2023-08-04 07:54:12,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:54:12,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-04 07:54:12,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:12,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-04 07:54:12,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2023-08-04 07:54:13,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 345 [2023-08-04 07:54:13,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 32 transitions, 218 flow. Second operand has 34 states, 34 states have (on average 156.55882352941177) internal successors, (5323), 34 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states 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 07:54:13,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:13,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 345 [2023-08-04 07:54:13,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:13,538 INFO L124 PetriNetUnfolderBase]: 247/610 cut-off events. [2023-08-04 07:54:13,538 INFO L125 PetriNetUnfolderBase]: For 963/963 co-relation queries the response was YES. [2023-08-04 07:54:13,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1794 conditions, 610 events. 247/610 cut-off events. For 963/963 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1036 event pairs, 10 based on Foata normal form. 24/631 useless extension candidates. Maximal degree in co-relation 1776. Up to 121 conditions per place. [2023-08-04 07:54:13,542 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 149 selfloop transitions, 30 changer transitions 0/180 dead transitions. [2023-08-04 07:54:13,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 180 transitions, 1041 flow [2023-08-04 07:54:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-04 07:54:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-04 07:54:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4927 transitions. [2023-08-04 07:54:13,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46068256194483403 [2023-08-04 07:54:13,555 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4927 transitions. [2023-08-04 07:54:13,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4927 transitions. [2023-08-04 07:54:13,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:13,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4927 transitions. [2023-08-04 07:54:13,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 158.93548387096774) internal successors, (4927), 31 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states 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 07:54:13,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 345.0) internal successors, (11040), 32 states have internal predecessors, (11040), 0 states have call successors, (0), 0 states 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 07:54:13,587 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 345.0) internal successors, (11040), 32 states have internal predecessors, (11040), 0 states have call successors, (0), 0 states 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 07:54:13,587 INFO L175 Difference]: Start difference. First operand has 52 places, 32 transitions, 218 flow. Second operand 31 states and 4927 transitions. [2023-08-04 07:54:13,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 180 transitions, 1041 flow [2023-08-04 07:54:13,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 180 transitions, 997 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-04 07:54:13,593 INFO L231 Difference]: Finished difference. Result has 85 places, 48 transitions, 416 flow [2023-08-04 07:54:13,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=416, PETRI_PLACES=85, PETRI_TRANSITIONS=48} [2023-08-04 07:54:13,593 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 41 predicate places. [2023-08-04 07:54:13,594 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 48 transitions, 416 flow [2023-08-04 07:54:13,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 156.55882352941177) internal successors, (5323), 34 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states 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 07:54:13,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:13,596 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:13,602 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 07:54:13,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:13,803 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:13,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash -625835852, now seen corresponding path program 4 times [2023-08-04 07:54:13,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:13,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543332745] [2023-08-04 07:54:13,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:13,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 15 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:15,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543332745] [2023-08-04 07:54:15,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543332745] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:15,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036678925] [2023-08-04 07:54:15,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-04 07:54:15,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:15,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:15,087 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 07:54:15,097 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 07:54:15,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-04 07:54:15,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 07:54:15,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-04 07:54:15,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:54:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 15 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:15,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:54:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 15 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:16,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036678925] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:54:16,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:54:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 65 [2023-08-04 07:54:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420691036] [2023-08-04 07:54:16,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:54:16,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-08-04 07:54:16,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:54:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-08-04 07:54:16,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2023-08-04 07:54:16,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 345 [2023-08-04 07:54:16,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 48 transitions, 416 flow. Second operand has 66 states, 66 states have (on average 156.53030303030303) internal successors, (10331), 66 states have internal predecessors, (10331), 0 states have call successors, (0), 0 states 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 07:54:16,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:54:16,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 345 [2023-08-04 07:54:16,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:54:17,888 INFO L124 PetriNetUnfolderBase]: 471/1170 cut-off events. [2023-08-04 07:54:17,888 INFO L125 PetriNetUnfolderBase]: For 6687/6687 co-relation queries the response was YES. [2023-08-04 07:54:17,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3599 conditions, 1170 events. 471/1170 cut-off events. For 6687/6687 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1932 event pairs, 10 based on Foata normal form. 48/1215 useless extension candidates. Maximal degree in co-relation 3572. Up to 233 conditions per place. [2023-08-04 07:54:17,893 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 293 selfloop transitions, 62 changer transitions 0/356 dead transitions. [2023-08-04 07:54:17,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 356 transitions, 2151 flow [2023-08-04 07:54:17,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-04 07:54:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-04 07:54:17,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 10007 transitions. [2023-08-04 07:54:17,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604094778007822 [2023-08-04 07:54:17,917 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 10007 transitions. [2023-08-04 07:54:17,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 10007 transitions. [2023-08-04 07:54:17,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:54:17,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 10007 transitions. [2023-08-04 07:54:17,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 158.84126984126985) internal successors, (10007), 63 states have internal predecessors, (10007), 0 states have call successors, (0), 0 states 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 07:54:17,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 345.0) internal successors, (22080), 64 states have internal predecessors, (22080), 0 states have call successors, (0), 0 states 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 07:54:17,974 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 345.0) internal successors, (22080), 64 states have internal predecessors, (22080), 0 states have call successors, (0), 0 states 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 07:54:17,974 INFO L175 Difference]: Start difference. First operand has 85 places, 48 transitions, 416 flow. Second operand 63 states and 10007 transitions. [2023-08-04 07:54:17,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 356 transitions, 2151 flow [2023-08-04 07:54:17,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 356 transitions, 1957 flow, removed 83 selfloop flow, removed 14 redundant places. [2023-08-04 07:54:17,987 INFO L231 Difference]: Finished difference. Result has 149 places, 80 transitions, 768 flow [2023-08-04 07:54:17,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=768, PETRI_PLACES=149, PETRI_TRANSITIONS=80} [2023-08-04 07:54:17,988 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 105 predicate places. [2023-08-04 07:54:17,988 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 80 transitions, 768 flow [2023-08-04 07:54:17,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 156.53030303030303) internal successors, (10331), 66 states have internal predecessors, (10331), 0 states have call successors, (0), 0 states 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 07:54:17,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:54:17,991 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2023-08-04 07:54:18,001 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 07:54:18,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:18,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:54:18,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:54:18,199 INFO L85 PathProgramCache]: Analyzing trace with hash 9157812, now seen corresponding path program 5 times [2023-08-04 07:54:18,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:54:18,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061030110] [2023-08-04 07:54:18,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:54:18,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:54:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:54:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3348 backedges. 31 proven. 3317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:54:21,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:54:21,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061030110] [2023-08-04 07:54:21,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061030110] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:54:21,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313729810] [2023-08-04 07:54:21,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-04 07:54:21,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:54:21,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:54:21,961 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 07:54:21,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 07:55:55,261 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2023-08-04 07:55:55,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 07:55:55,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 64 conjunts are in the unsatisfiable core [2023-08-04 07:55:55,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:55:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3348 backedges. 31 proven. 3317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:55:55,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:55:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3348 backedges. 31 proven. 3317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:55:58,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313729810] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:55:58,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:55:58,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 129 [2023-08-04 07:55:58,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414043368] [2023-08-04 07:55:58,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:55:58,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-08-04 07:55:58,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:55:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-08-04 07:55:58,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2023-08-04 07:55:59,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 345 [2023-08-04 07:55:59,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 80 transitions, 768 flow. Second operand has 130 states, 130 states have (on average 156.51538461538462) internal successors, (20347), 130 states have internal predecessors, (20347), 0 states have call successors, (0), 0 states 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 07:55:59,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:55:59,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 345 [2023-08-04 07:55:59,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:56:03,490 INFO L124 PetriNetUnfolderBase]: 919/2290 cut-off events. [2023-08-04 07:56:03,490 INFO L125 PetriNetUnfolderBase]: For 50223/50223 co-relation queries the response was YES. [2023-08-04 07:56:03,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7039 conditions, 2290 events. 919/2290 cut-off events. For 50223/50223 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 3723 event pairs, 10 based on Foata normal form. 96/2383 useless extension candidates. Maximal degree in co-relation 6996. Up to 457 conditions per place. [2023-08-04 07:56:03,507 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 581 selfloop transitions, 126 changer transitions 0/708 dead transitions. [2023-08-04 07:56:03,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 708 transitions, 4263 flow [2023-08-04 07:56:03,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-08-04 07:56:03,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-08-04 07:56:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 20167 transitions. [2023-08-04 07:56:03,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602761611320324 [2023-08-04 07:56:03,529 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 20167 transitions. [2023-08-04 07:56:03,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 20167 transitions. [2023-08-04 07:56:03,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:56:03,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 20167 transitions. [2023-08-04 07:56:03,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 158.79527559055117) internal successors, (20167), 127 states have internal predecessors, (20167), 0 states have call successors, (0), 0 states 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 07:56:03,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 345.0) internal successors, (44160), 128 states have internal predecessors, (44160), 0 states have call successors, (0), 0 states 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 07:56:03,743 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 345.0) internal successors, (44160), 128 states have internal predecessors, (44160), 0 states have call successors, (0), 0 states 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 07:56:03,743 INFO L175 Difference]: Start difference. First operand has 149 places, 80 transitions, 768 flow. Second operand 127 states and 20167 transitions. [2023-08-04 07:56:03,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 708 transitions, 4263 flow [2023-08-04 07:56:03,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 708 transitions, 3877 flow, removed 163 selfloop flow, removed 30 redundant places. [2023-08-04 07:56:03,787 INFO L231 Difference]: Finished difference. Result has 277 places, 144 transitions, 1472 flow [2023-08-04 07:56:03,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=1472, PETRI_PLACES=277, PETRI_TRANSITIONS=144} [2023-08-04 07:56:03,789 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 233 predicate places. [2023-08-04 07:56:03,789 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 144 transitions, 1472 flow [2023-08-04 07:56:03,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 156.51538461538462) internal successors, (20347), 130 states have internal predecessors, (20347), 0 states have call successors, (0), 0 states 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 07:56:03,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:56:03,797 INFO L208 CegarLoopForPetriNet]: trace histogram [64, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2023-08-04 07:56:03,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 07:56:04,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:56:04,013 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:56:04,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:56:04,014 INFO L85 PathProgramCache]: Analyzing trace with hash 585512116, now seen corresponding path program 6 times [2023-08-04 07:56:04,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:56:04,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425518581] [2023-08-04 07:56:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:56:04,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:56:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:56:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 13860 backedges. 63 proven. 13797 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:56:15,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:56:15,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425518581] [2023-08-04 07:56:15,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425518581] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:56:15,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986333304] [2023-08-04 07:56:15,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-04 07:56:15,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:56:15,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:56:15,517 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:56:15,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Received shutdown request... [2023-08-04 08:08:19,487 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 08:08:19,488 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 08:08:20,498 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 08:08:20,693 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2023-08-04 08:08:20,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 137 [2023-08-04 08:08:20,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 08:08:20,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:08:20,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128] total 128 [2023-08-04 08:08:20,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384841507] [2023-08-04 08:08:20,715 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-04 08:08:20,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2023-08-04 08:08:20,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:08:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2023-08-04 08:08:20,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4224, Invalid=12288, Unknown=0, NotChecked=0, Total=16512 [2023-08-04 08:08:20,722 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 08:08:20,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 08:08:20,723 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-04 08:08:20,724 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 08:08:20,724 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 08:08:20,724 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 08:08:20,725 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1] [2023-08-04 08:08:20,726 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2023-08-04 08:08:20,729 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-04 08:08:20,729 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 08:08:20,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 08:08:20 BasicIcfg [2023-08-04 08:08:20,732 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 08:08:20,732 INFO L158 Benchmark]: Toolchain (without parser) took 861973.14ms. Allocated memory was 360.7MB in the beginning and 1.5GB in the end (delta: 1.1GB). Free memory was 303.6MB in the beginning and 1.2GB in the end (delta: -866.0MB). Peak memory consumption was 230.8MB. Max. memory is 16.0GB. [2023-08-04 08:08:20,733 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 360.7MB. Free memory was 313.5MB in the beginning and 313.3MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 08:08:20,733 INFO L158 Benchmark]: CACSL2BoogieTranslator took 702.90ms. Allocated memory was 360.7MB in the beginning and 522.2MB in the end (delta: 161.5MB). Free memory was 303.4MB in the beginning and 484.7MB in the end (delta: -181.3MB). Peak memory consumption was 32.2MB. Max. memory is 16.0GB. [2023-08-04 08:08:20,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.30ms. Allocated memory is still 522.2MB. Free memory was 484.7MB in the beginning and 481.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-04 08:08:20,733 INFO L158 Benchmark]: Boogie Preprocessor took 31.94ms. Allocated memory is still 522.2MB. Free memory was 481.5MB in the beginning and 479.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 08:08:20,733 INFO L158 Benchmark]: RCFGBuilder took 429.37ms. Allocated memory is still 522.2MB. Free memory was 479.4MB in the beginning and 460.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 08:08:20,734 INFO L158 Benchmark]: TraceAbstraction took 860749.79ms. Allocated memory was 522.2MB in the beginning and 1.5GB in the end (delta: 933.2MB). Free memory was 459.8MB in the beginning and 1.2GB in the end (delta: -709.8MB). Peak memory consumption was 223.8MB. Max. memory is 16.0GB. [2023-08-04 08:08:20,735 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 360.7MB. Free memory was 313.5MB in the beginning and 313.3MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 702.90ms. Allocated memory was 360.7MB in the beginning and 522.2MB in the end (delta: 161.5MB). Free memory was 303.4MB in the beginning and 484.7MB in the end (delta: -181.3MB). Peak memory consumption was 32.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.30ms. Allocated memory is still 522.2MB. Free memory was 484.7MB in the beginning and 481.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.94ms. Allocated memory is still 522.2MB. Free memory was 481.5MB in the beginning and 479.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 429.37ms. Allocated memory is still 522.2MB. Free memory was 479.4MB in the beginning and 460.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 860749.79ms. Allocated memory was 522.2MB in the beginning and 1.5GB in the end (delta: 933.2MB). Free memory was 459.8MB in the beginning and 1.2GB in the end (delta: -709.8MB). Peak memory consumption was 223.8MB. 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: 3.8s, 168 PlacesBefore, 44 PlacesAfterwards, 181 TransitionsBefore, 48 TransitionsAfterwards, 14280 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 98 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 33 ConcurrentYvCompositions, 9 ChoiceCompositions, 164 TotalNumberOfCompositions, 21109 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15934, independent: 15714, independent conditional: 0, independent unconditional: 15714, dependent: 220, dependent conditional: 0, dependent unconditional: 220, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7859, independent: 7807, independent conditional: 0, independent unconditional: 7807, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15934, independent: 7907, independent conditional: 0, independent unconditional: 7907, dependent: 168, dependent conditional: 0, dependent unconditional: 168, unknown: 7859, unknown conditional: 0, unknown unconditional: 7859] , Statistics on independence cache: Total cache size (in pairs): 352, Positive cache size: 335, Positive conditional cache size: 0, Positive unconditional cache size: 335, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 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, 256 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: 860.6s, OverallIterations: 10, TraceHistogramMax: 64, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 12.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3713 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3599 mSDsluCounter, 1156 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1124 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4994 IncrementalHoareTripleChecker+Invalid, 5054 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 32 mSDtfsCounter, 4994 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1299 GetRequests, 797 SyntacticMatches, 2 SemanticMatches, 500 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14591 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1472occurred in iteration=9, InterpolantAutomatonStates: 261, 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, 94.1s SatisfiabilityAnalysisTime, 22.2s InterpolantComputationTime, 1418 NumberOfCodeBlocks, 1418 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 1852 ConstructedInterpolants, 0 QuantifiedInterpolants, 5334 SizeOfPredicates, 57 NumberOfNonLiveVariables, 4033 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 23 InterpolantComputations, 3 PerfectInterpolantSequences, 235/26852 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