./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:06:56,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:06:56,070 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 22:06:56,077 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:06:56,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:06:56,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:06:56,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:06:56,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:06:56,093 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:06:56,093 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:06:56,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 22:06:56,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 22:06:56,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:06:56,094 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:06:56,094 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:06:56,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:06:56,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 22:06:56,098 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:06:56,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:06:56,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:06:56,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:06:56,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 22:06:56,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 22:06:56,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 22:06:56,100 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:06:56,100 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 22:06:56,101 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:06:56,101 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:06:56,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:06:56,101 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:06:56,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:06:56,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:06:56,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 22:06:56,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 22:06:56,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:06:56,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:06:56,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 22:06:56,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 22:06:56,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:06:56,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 22:06:56,103 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 22:06:56,104 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 22:06:56,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 22:06:56,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 22:06:56,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe [2024-11-20 22:06:56,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:06:56,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:06:56,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:06:56,396 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:06:56,401 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:06:56,402 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-1.i [2024-11-20 22:06:57,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:06:58,028 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:06:58,030 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-1.i [2024-11-20 22:06:58,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f673e20/d90e53ee80bd4ab78d2309c03bc2a565/FLAG610c53b55 [2024-11-20 22:06:58,365 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5f673e20/d90e53ee80bd4ab78d2309c03bc2a565 [2024-11-20 22:06:58,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:06:58,367 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:06:58,368 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:06:58,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:06:58,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:06:58,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c60553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58, skipping insertion in model container [2024-11-20 22:06:58,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,411 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:06:58,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:06:58,724 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:06:58,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:06:58,807 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:06:58,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58 WrapperNode [2024-11-20 22:06:58,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:06:58,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:06:58,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:06:58,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:06:58,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,842 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2024-11-20 22:06:58,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:06:58,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:06:58,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:06:58,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:06:58,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,856 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,865 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 22:06:58,865 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,865 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,871 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:06:58,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:06:58,878 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:06:58,878 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:06:58,879 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (1/1) ... [2024-11-20 22:06:58,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:06:58,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:06:58,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 22:06:58,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 22:06:58,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:06:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-20 22:06:58,949 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-20 22:06:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-20 22:06:58,949 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-20 22:06:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:06:58,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:06:58,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:06:58,951 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 22:06:59,068 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:06:59,069 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:06:59,213 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 22:06:59,213 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:06:59,307 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:06:59,307 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 22:06:59,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:06:59 BoogieIcfgContainer [2024-11-20 22:06:59,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:06:59,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 22:06:59,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 22:06:59,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 22:06:59,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:06:58" (1/3) ... [2024-11-20 22:06:59,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bec5093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:06:59, skipping insertion in model container [2024-11-20 22:06:59,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:06:58" (2/3) ... [2024-11-20 22:06:59,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bec5093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:06:59, skipping insertion in model container [2024-11-20 22:06:59,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:06:59" (3/3) ... [2024-11-20 22:06:59,317 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind3-1.i [2024-11-20 22:06:59,330 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 22:06:59,330 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-20 22:06:59,331 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 22:06:59,371 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 22:06:59,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2024-11-20 22:06:59,438 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2024-11-20 22:06:59,441 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 22:06:59,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 135 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2024-11-20 22:06:59,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2024-11-20 22:06:59,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 71 flow [2024-11-20 22:06:59,459 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 22:06:59,467 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@a9d24a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 22:06:59,468 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-20 22:06:59,475 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 22:06:59,476 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-20 22:06:59,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 22:06:59,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:06:59,477 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:06:59,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-20 22:06:59,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:06:59,482 INFO L85 PathProgramCache]: Analyzing trace with hash 998420578, now seen corresponding path program 1 times [2024-11-20 22:06:59,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:06:59,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289569101] [2024-11-20 22:06:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:59,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:06:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:06:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:06:59,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:06:59,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289569101] [2024-11-20 22:06:59,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289569101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:06:59,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:06:59,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:06:59,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484037552] [2024-11-20 22:06:59,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:06:59,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:06:59,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:06:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:06:59,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:06:59,839 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-20 22:06:59,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:59,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:06:59,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-20 22:06:59,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:06:59,958 INFO L124 PetriNetUnfolderBase]: 106/260 cut-off events. [2024-11-20 22:06:59,958 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 22:06:59,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 260 events. 106/260 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1134 event pairs, 13 based on Foata normal form. 29/254 useless extension candidates. Maximal degree in co-relation 419. Up to 160 conditions per place. [2024-11-20 22:06:59,962 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 28 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-11-20 22:06:59,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 156 flow [2024-11-20 22:06:59,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:06:59,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:06:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-20 22:06:59,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2024-11-20 22:06:59,972 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 71 flow. Second operand 5 states and 94 transitions. [2024-11-20 22:06:59,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 156 flow [2024-11-20 22:06:59,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:06:59,976 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 72 flow [2024-11-20 22:06:59,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=72, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-11-20 22:06:59,980 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 1 predicate places. [2024-11-20 22:06:59,980 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 72 flow [2024-11-20 22:06:59,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:06:59,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:06:59,980 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:06:59,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 22:06:59,981 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-20 22:06:59,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:06:59,981 INFO L85 PathProgramCache]: Analyzing trace with hash 998420381, now seen corresponding path program 1 times [2024-11-20 22:06:59,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:06:59,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288204355] [2024-11-20 22:06:59,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:06:59,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:06:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:07:00,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:07:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288204355] [2024-11-20 22:07:00,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288204355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:07:00,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:07:00,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:07:00,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671908617] [2024-11-20 22:07:00,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:07:00,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:07:00,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:07:00,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:07:00,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:07:00,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2024-11-20 22:07:00,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:00,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:07:00,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2024-11-20 22:07:00,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:07:00,070 INFO L124 PetriNetUnfolderBase]: 52/151 cut-off events. [2024-11-20 22:07:00,070 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-20 22:07:00,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 151 events. 52/151 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 619 event pairs, 30 based on Foata normal form. 3/134 useless extension candidates. Maximal degree in co-relation 228. Up to 102 conditions per place. [2024-11-20 22:07:00,072 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 17 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-20 22:07:00,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 118 flow [2024-11-20 22:07:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:07:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:07:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-20 22:07:00,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6767676767676768 [2024-11-20 22:07:00,073 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 72 flow. Second operand 3 states and 67 transitions. [2024-11-20 22:07:00,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 118 flow [2024-11-20 22:07:00,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:07:00,075 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 76 flow [2024-11-20 22:07:00,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-11-20 22:07:00,075 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2024-11-20 22:07:00,075 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 76 flow [2024-11-20 22:07:00,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:00,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:07:00,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:07:00,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 22:07:00,076 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-20 22:07:00,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:07:00,076 INFO L85 PathProgramCache]: Analyzing trace with hash 886267104, now seen corresponding path program 1 times [2024-11-20 22:07:00,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:07:00,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927435170] [2024-11-20 22:07:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:00,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:07:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:07:00,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:07:00,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927435170] [2024-11-20 22:07:00,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927435170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:07:00,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:07:00,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:07:00,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950561952] [2024-11-20 22:07:00,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:07:00,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:07:00,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:07:00,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:07:00,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:07:00,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-20 22:07:00,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:00,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:07:00,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-20 22:07:00,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:07:00,239 INFO L124 PetriNetUnfolderBase]: 72/195 cut-off events. [2024-11-20 22:07:00,243 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-20 22:07:00,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388 conditions, 195 events. 72/195 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 785 event pairs, 8 based on Foata normal form. 15/196 useless extension candidates. Maximal degree in co-relation 324. Up to 70 conditions per place. [2024-11-20 22:07:00,244 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 31 selfloop transitions, 3 changer transitions 7/49 dead transitions. [2024-11-20 22:07:00,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 210 flow [2024-11-20 22:07:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:07:00,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:07:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-11-20 22:07:00,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6242424242424243 [2024-11-20 22:07:00,246 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 76 flow. Second operand 5 states and 103 transitions. [2024-11-20 22:07:00,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 210 flow [2024-11-20 22:07:00,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:07:00,247 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 69 flow [2024-11-20 22:07:00,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=69, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2024-11-20 22:07:00,248 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2024-11-20 22:07:00,248 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 69 flow [2024-11-20 22:07:00,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:00,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:07:00,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:07:00,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 22:07:00,248 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-20 22:07:00,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:07:00,249 INFO L85 PathProgramCache]: Analyzing trace with hash 887257127, now seen corresponding path program 1 times [2024-11-20 22:07:00,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:07:00,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421842965] [2024-11-20 22:07:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:00,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:07:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:07:00,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:07:00,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421842965] [2024-11-20 22:07:00,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421842965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:07:00,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:07:00,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:07:00,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057231249] [2024-11-20 22:07:00,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:07:00,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:07:00,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:07:00,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:07:00,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:07:00,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2024-11-20 22:07:00,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:00,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:07:00,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2024-11-20 22:07:00,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:07:00,332 INFO L124 PetriNetUnfolderBase]: 32/95 cut-off events. [2024-11-20 22:07:00,333 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-20 22:07:00,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 95 events. 32/95 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 297 event pairs, 16 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 187. Up to 58 conditions per place. [2024-11-20 22:07:00,333 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 14 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-11-20 22:07:00,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 108 flow [2024-11-20 22:07:00,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:07:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:07:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-11-20 22:07:00,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-11-20 22:07:00,335 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 69 flow. Second operand 4 states and 70 transitions. [2024-11-20 22:07:00,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 108 flow [2024-11-20 22:07:00,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 22:07:00,336 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 64 flow [2024-11-20 22:07:00,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2024-11-20 22:07:00,336 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2024-11-20 22:07:00,336 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 64 flow [2024-11-20 22:07:00,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:00,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:07:00,337 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:07:00,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 22:07:00,337 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-20 22:07:00,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:07:00,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1293268734, now seen corresponding path program 1 times [2024-11-20 22:07:00,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:07:00,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578050100] [2024-11-20 22:07:00,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:00,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:07:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:07:00,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:07:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578050100] [2024-11-20 22:07:00,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578050100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:07:00,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415386635] [2024-11-20 22:07:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:00,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:07:00,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:07:00,426 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) [2024-11-20 22:07:00,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 22:07:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:00,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:07:00,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:07:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:07:00,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:07:00,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415386635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:07:00,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:07:00,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-20 22:07:00,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375836580] [2024-11-20 22:07:00,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:07:00,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 22:07:00,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:07:00,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 22:07:00,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 22:07:00,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2024-11-20 22:07:00,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:00,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:07:00,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2024-11-20 22:07:00,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:07:00,589 INFO L124 PetriNetUnfolderBase]: 30/88 cut-off events. [2024-11-20 22:07:00,589 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-20 22:07:00,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 88 events. 30/88 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 268 event pairs, 8 based on Foata normal form. 3/84 useless extension candidates. Maximal degree in co-relation 168. Up to 48 conditions per place. [2024-11-20 22:07:00,590 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 14 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-11-20 22:07:00,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 107 flow [2024-11-20 22:07:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 22:07:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 22:07:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-11-20 22:07:00,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-11-20 22:07:00,591 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 64 flow. Second operand 5 states and 84 transitions. [2024-11-20 22:07:00,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 107 flow [2024-11-20 22:07:00,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 100 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 22:07:00,592 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 66 flow [2024-11-20 22:07:00,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-11-20 22:07:00,592 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2024-11-20 22:07:00,593 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 66 flow [2024-11-20 22:07:00,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:00,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:07:00,593 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:07:00,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 22:07:00,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:07:00,798 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-20 22:07:00,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:07:00,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1913451785, now seen corresponding path program 1 times [2024-11-20 22:07:00,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:07:00,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097928407] [2024-11-20 22:07:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:00,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:07:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:07:00,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:07:00,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097928407] [2024-11-20 22:07:00,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097928407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:07:00,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:07:00,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:07:00,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088229554] [2024-11-20 22:07:00,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:07:00,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:07:00,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:07:00,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:07:00,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:07:00,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-20 22:07:00,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:00,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:07:00,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-20 22:07:00,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:07:00,979 INFO L124 PetriNetUnfolderBase]: 58/134 cut-off events. [2024-11-20 22:07:00,979 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-20 22:07:00,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 134 events. 58/134 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 451 event pairs, 38 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 280. Up to 89 conditions per place. [2024-11-20 22:07:00,981 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 20 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-11-20 22:07:00,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 130 flow [2024-11-20 22:07:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:07:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:07:00,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-11-20 22:07:00,983 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6742424242424242 [2024-11-20 22:07:00,983 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 66 flow. Second operand 4 states and 89 transitions. [2024-11-20 22:07:00,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 130 flow [2024-11-20 22:07:00,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 120 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-20 22:07:00,984 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 78 flow [2024-11-20 22:07:00,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2024-11-20 22:07:00,985 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2024-11-20 22:07:00,985 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 78 flow [2024-11-20 22:07:00,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:00,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:07:00,985 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:07:00,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 22:07:00,986 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-20 22:07:00,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:07:00,986 INFO L85 PathProgramCache]: Analyzing trace with hash 836441319, now seen corresponding path program 1 times [2024-11-20 22:07:00,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:07:00,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249893179] [2024-11-20 22:07:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:00,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:07:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:07:01,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:07:01,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249893179] [2024-11-20 22:07:01,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249893179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:07:01,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823899843] [2024-11-20 22:07:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:01,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:07:01,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:07:01,067 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) [2024-11-20 22:07:01,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 22:07:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:01,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:07:01,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:07:01,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:07:01,135 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:07:01,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823899843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:07:01,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:07:01,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:07:01,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225637178] [2024-11-20 22:07:01,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:07:01,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:07:01,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:07:01,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:07:01,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:07:01,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-20 22:07:01,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:01,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:07:01,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-20 22:07:01,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:07:01,217 INFO L124 PetriNetUnfolderBase]: 51/121 cut-off events. [2024-11-20 22:07:01,218 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-20 22:07:01,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 121 events. 51/121 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 403 event pairs, 10 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 291. Up to 31 conditions per place. [2024-11-20 22:07:01,219 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 23 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-11-20 22:07:01,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 158 flow [2024-11-20 22:07:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:07:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:07:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-11-20 22:07:01,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6313131313131313 [2024-11-20 22:07:01,220 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 78 flow. Second operand 6 states and 125 transitions. [2024-11-20 22:07:01,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 158 flow [2024-11-20 22:07:01,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:07:01,221 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 82 flow [2024-11-20 22:07:01,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2024-11-20 22:07:01,221 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2024-11-20 22:07:01,222 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 82 flow [2024-11-20 22:07:01,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:01,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:07:01,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:07:01,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 22:07:01,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-20 22:07:01,423 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-20 22:07:01,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:07:01,423 INFO L85 PathProgramCache]: Analyzing trace with hash 159877382, now seen corresponding path program 1 times [2024-11-20 22:07:01,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:07:01,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852870444] [2024-11-20 22:07:01,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:01,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:07:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:01,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:07:01,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:07:01,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852870444] [2024-11-20 22:07:01,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852870444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:07:01,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505315736] [2024-11-20 22:07:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:01,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:07:01,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:07:01,472 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) [2024-11-20 22:07:01,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 22:07:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:01,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:07:01,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:07:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:07:01,530 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:07:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:07:01,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505315736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:07:01,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:07:01,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:07:01,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671823324] [2024-11-20 22:07:01,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:07:01,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:07:01,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:07:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:07:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:07:01,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 33 [2024-11-20 22:07:01,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 82 flow. Second operand has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:01,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:07:01,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 33 [2024-11-20 22:07:01,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:07:01,686 INFO L124 PetriNetUnfolderBase]: 93/217 cut-off events. [2024-11-20 22:07:01,686 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-11-20 22:07:01,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 217 events. 93/217 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 780 event pairs, 31 based on Foata normal form. 18/233 useless extension candidates. Maximal degree in co-relation 573. Up to 76 conditions per place. [2024-11-20 22:07:01,688 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 37 selfloop transitions, 9 changer transitions 0/53 dead transitions. [2024-11-20 22:07:01,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 266 flow [2024-11-20 22:07:01,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:07:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:07:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-11-20 22:07:01,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-20 22:07:01,689 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 82 flow. Second operand 10 states and 209 transitions. [2024-11-20 22:07:01,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 266 flow [2024-11-20 22:07:01,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 53 transitions, 240 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-20 22:07:01,691 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 126 flow [2024-11-20 22:07:01,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=126, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2024-11-20 22:07:01,691 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-11-20 22:07:01,691 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 126 flow [2024-11-20 22:07:01,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:01,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:07:01,692 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:07:01,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 22:07:01,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:07:01,893 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-20 22:07:01,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:07:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1876088484, now seen corresponding path program 2 times [2024-11-20 22:07:01,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:07:01,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329541154] [2024-11-20 22:07:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:01,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:07:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-20 22:07:01,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:07:01,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329541154] [2024-11-20 22:07:01,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329541154] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:07:01,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936952410] [2024-11-20 22:07:01,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:07:01,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:07:01,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:07:01,982 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) [2024-11-20 22:07:01,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 22:07:02,023 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:07:02,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:07:02,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:07:02,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:07:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-20 22:07:02,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:07:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-20 22:07:02,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936952410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:07:02,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:07:02,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2024-11-20 22:07:02,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094523282] [2024-11-20 22:07:02,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:07:02,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 22:07:02,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:07:02,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 22:07:02,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-20 22:07:02,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 33 [2024-11-20 22:07:02,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 126 flow. Second operand has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:02,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:07:02,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 33 [2024-11-20 22:07:02,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:07:02,304 INFO L124 PetriNetUnfolderBase]: 89/213 cut-off events. [2024-11-20 22:07:02,305 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-11-20 22:07:02,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596 conditions, 213 events. 89/213 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 596 event pairs, 27 based on Foata normal form. 8/220 useless extension candidates. Maximal degree in co-relation 576. Up to 114 conditions per place. [2024-11-20 22:07:02,306 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 27 selfloop transitions, 2 changer transitions 20/54 dead transitions. [2024-11-20 22:07:02,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 54 transitions, 304 flow [2024-11-20 22:07:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:07:02,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:07:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-11-20 22:07:02,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49393939393939396 [2024-11-20 22:07:02,307 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 126 flow. Second operand 10 states and 163 transitions. [2024-11-20 22:07:02,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 54 transitions, 304 flow [2024-11-20 22:07:02,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 287 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-20 22:07:02,309 INFO L231 Difference]: Finished difference. Result has 58 places, 29 transitions, 136 flow [2024-11-20 22:07:02,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=29} [2024-11-20 22:07:02,309 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 21 predicate places. [2024-11-20 22:07:02,309 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 29 transitions, 136 flow [2024-11-20 22:07:02,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:02,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:07:02,310 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:07:02,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 22:07:02,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:07:02,510 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2024-11-20 22:07:02,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:07:02,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1057413001, now seen corresponding path program 1 times [2024-11-20 22:07:02,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:07:02,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111000960] [2024-11-20 22:07:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:02,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:07:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 22:07:02,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:07:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111000960] [2024-11-20 22:07:02,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111000960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:07:02,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963090757] [2024-11-20 22:07:02,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:07:02,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:07:02,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:07:02,617 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) [2024-11-20 22:07:02,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 22:07:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:07:02,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 22:07:02,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:07:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 22:07:02,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:07:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 22:07:02,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963090757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:07:02,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:07:02,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 17 [2024-11-20 22:07:02,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832762491] [2024-11-20 22:07:02,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:07:02,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 22:07:02,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:07:02,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 22:07:02,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-20 22:07:02,962 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-11-20 22:07:02,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 29 transitions, 136 flow. Second operand has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:02,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:07:02,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-11-20 22:07:02,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:07:03,187 INFO L124 PetriNetUnfolderBase]: 35/96 cut-off events. [2024-11-20 22:07:03,188 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-20 22:07:03,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 96 events. 35/96 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 200 event pairs, 0 based on Foata normal form. 4/100 useless extension candidates. Maximal degree in co-relation 278. Up to 22 conditions per place. [2024-11-20 22:07:03,188 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2024-11-20 22:07:03,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 42 transitions, 216 flow [2024-11-20 22:07:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:07:03,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:07:03,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-11-20 22:07:03,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-11-20 22:07:03,189 INFO L175 Difference]: Start difference. First operand has 58 places, 29 transitions, 136 flow. Second operand 10 states and 138 transitions. [2024-11-20 22:07:03,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 42 transitions, 216 flow [2024-11-20 22:07:03,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 191 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-11-20 22:07:03,191 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-11-20 22:07:03,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-11-20 22:07:03,191 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-11-20 22:07:03,191 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-11-20 22:07:03,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.666666666666666) internal successors, (210), 18 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:07:03,194 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2024-11-20 22:07:03,194 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2024-11-20 22:07:03,194 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 16 remaining) [2024-11-20 22:07:03,194 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2024-11-20 22:07:03,194 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2024-11-20 22:07:03,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2024-11-20 22:07:03,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2024-11-20 22:07:03,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2024-11-20 22:07:03,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2024-11-20 22:07:03,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2024-11-20 22:07:03,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2024-11-20 22:07:03,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2024-11-20 22:07:03,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2024-11-20 22:07:03,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2024-11-20 22:07:03,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2024-11-20 22:07:03,195 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2024-11-20 22:07:03,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 22:07:03,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-20 22:07:03,400 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:07:03,405 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 22:07:03,405 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 22:07:03,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:07:03 BasicIcfg [2024-11-20 22:07:03,408 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 22:07:03,408 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 22:07:03,408 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 22:07:03,409 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 22:07:03,409 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:06:59" (3/4) ... [2024-11-20 22:07:03,410 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 22:07:03,412 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2024-11-20 22:07:03,412 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2024-11-20 22:07:03,415 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2024-11-20 22:07:03,415 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-20 22:07:03,415 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-20 22:07:03,415 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 22:07:03,477 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 22:07:03,477 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 22:07:03,477 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 22:07:03,478 INFO L158 Benchmark]: Toolchain (without parser) took 5110.34ms. Allocated memory was 134.2MB in the beginning and 293.6MB in the end (delta: 159.4MB). Free memory was 63.3MB in the beginning and 182.4MB in the end (delta: -119.2MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2024-11-20 22:07:03,478 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 134.2MB. Free memory was 104.6MB in the beginning and 104.6MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:07:03,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.79ms. Allocated memory was 134.2MB in the beginning and 226.5MB in the end (delta: 92.3MB). Free memory was 63.3MB in the beginning and 183.8MB in the end (delta: -120.5MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2024-11-20 22:07:03,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.29ms. Allocated memory is still 226.5MB. Free memory was 183.8MB in the beginning and 181.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:07:03,479 INFO L158 Benchmark]: Boogie Preprocessor took 30.74ms. Allocated memory is still 226.5MB. Free memory was 181.7MB in the beginning and 179.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:07:03,479 INFO L158 Benchmark]: RCFGBuilder took 429.62ms. Allocated memory is still 226.5MB. Free memory was 179.6MB in the beginning and 156.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-20 22:07:03,479 INFO L158 Benchmark]: TraceAbstraction took 4097.84ms. Allocated memory was 226.5MB in the beginning and 293.6MB in the end (delta: 67.1MB). Free memory was 156.5MB in the beginning and 186.6MB in the end (delta: -30.1MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2024-11-20 22:07:03,479 INFO L158 Benchmark]: Witness Printer took 68.89ms. Allocated memory is still 293.6MB. Free memory was 186.6MB in the beginning and 182.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 22:07:03,480 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 134.2MB. Free memory was 104.6MB in the beginning and 104.6MB in the end (delta: 21.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 439.79ms. Allocated memory was 134.2MB in the beginning and 226.5MB in the end (delta: 92.3MB). Free memory was 63.3MB in the beginning and 183.8MB in the end (delta: -120.5MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.29ms. Allocated memory is still 226.5MB. Free memory was 183.8MB in the beginning and 181.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.74ms. Allocated memory is still 226.5MB. Free memory was 181.7MB in the beginning and 179.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 429.62ms. Allocated memory is still 226.5MB. Free memory was 179.6MB in the beginning and 156.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4097.84ms. Allocated memory was 226.5MB in the beginning and 293.6MB in the end (delta: 67.1MB). Free memory was 156.5MB in the beginning and 186.6MB in the end (delta: -30.1MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * Witness Printer took 68.89ms. Allocated memory is still 293.6MB. Free memory was 186.6MB in the beginning and 182.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 773]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 773]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 765]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 766]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 765]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 766]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 53 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 622 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 543 mSDsluCounter, 603 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 567 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1113 IncrementalHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 36 mSDtfsCounter, 1113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 231 GetRequests, 141 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=136occurred in iteration=9, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 241 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 296 ConstructedInterpolants, 0 QuantifiedInterpolants, 798 SizeOfPredicates, 19 NumberOfNonLiveVariables, 389 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 18 InterpolantComputations, 7 PerfectInterpolantSequences, 169/209 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 - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 22:07:03,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE