./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread/sync01.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread/sync01.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 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 20:27:24,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 20:27:24,477 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 20:27:24,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 20:27:24,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 20:27:24,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 20:27:24,508 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 20:27:24,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 20:27:24,510 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 20:27:24,511 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 20:27:24,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 20:27:24,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 20:27:24,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 20:27:24,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 20:27:24,514 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 20:27:24,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 20:27:24,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 20:27:24,515 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 20:27:24,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 20:27:24,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 20:27:24,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 20:27:24,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 20:27:24,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 20:27:24,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 20:27:24,521 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 20:27:24,521 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 20:27:24,522 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 20:27:24,522 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 20:27:24,522 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 20:27:24,522 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 20:27:24,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 20:27:24,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 20:27:24,523 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 20:27:24,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 20:27:24,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:27:24,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 20:27:24,524 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 20:27:24,524 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 20:27:24,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 20:27:24,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 20:27:24,524 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 20:27:24,525 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 20:27:24,525 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 20:27:24,525 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 20:27:24,525 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f929a317f167560539ae4b4d441a695b43dc484839e0d977f902275d758b932 [2024-11-12 20:27:24,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 20:27:24,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 20:27:24,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 20:27:24,819 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 20:27:24,819 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 20:27:24,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/sync01.i [2024-11-12 20:27:26,288 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 20:27:26,576 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 20:27:26,577 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/sync01.i [2024-11-12 20:27:26,594 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a7569b0/a2582db60bc1457e9fb35aee8e86fd0c/FLAG8a0a068ff [2024-11-12 20:27:26,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57a7569b0/a2582db60bc1457e9fb35aee8e86fd0c [2024-11-12 20:27:26,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 20:27:26,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 20:27:26,888 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 20:27:26,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 20:27:26,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 20:27:26,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:27:26" (1/1) ... [2024-11-12 20:27:26,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dbf2434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:26, skipping insertion in model container [2024-11-12 20:27:26,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:27:26" (1/1) ... [2024-11-12 20:27:26,946 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 20:27:27,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:27:27,446 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 20:27:27,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 20:27:27,552 INFO L204 MainTranslator]: Completed translation [2024-11-12 20:27:27,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27 WrapperNode [2024-11-12 20:27:27,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 20:27:27,555 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 20:27:27,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 20:27:27,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 20:27:27,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,625 INFO L138 Inliner]: procedures = 268, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 254 [2024-11-12 20:27:27,626 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 20:27:27,627 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 20:27:27,627 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 20:27:27,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 20:27:27,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,645 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,675 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-12 20:27:27,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,704 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 20:27:27,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 20:27:27,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 20:27:27,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 20:27:27,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (1/1) ... [2024-11-12 20:27:27,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 20:27:27,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 20:27:27,746 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) [2024-11-12 20:27:27,748 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 [2024-11-12 20:27:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 20:27:27,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-12 20:27:27,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-12 20:27:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-12 20:27:27,787 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-12 20:27:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 20:27:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 20:27:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 20:27:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 20:27:27,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 20:27:27,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 20:27:27,789 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 20:27:27,933 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 20:27:27,934 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 20:27:28,259 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 20:27:28,260 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 20:27:29,582 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 20:27:29,583 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 20:27:29,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:27:29 BoogieIcfgContainer [2024-11-12 20:27:29,584 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 20:27:29,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 20:27:29,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 20:27:29,591 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 20:27:29,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:27:26" (1/3) ... [2024-11-12 20:27:29,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d0e855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:27:29, skipping insertion in model container [2024-11-12 20:27:29,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:27:27" (2/3) ... [2024-11-12 20:27:29,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d0e855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:27:29, skipping insertion in model container [2024-11-12 20:27:29,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:27:29" (3/3) ... [2024-11-12 20:27:29,595 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2024-11-12 20:27:29,614 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 20:27:29,615 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-12 20:27:29,615 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 20:27:29,671 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 20:27:29,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 36 transitions, 86 flow [2024-11-12 20:27:29,822 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-11-12 20:27:29,822 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 20:27:29,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 2/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-12 20:27:29,826 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 36 transitions, 86 flow [2024-11-12 20:27:29,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 73 flow [2024-11-12 20:27:29,840 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 20:27:29,847 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;@15ab4d53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 20:27:29,848 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-12 20:27:29,886 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 20:27:29,887 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2024-11-12 20:27:29,887 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 20:27:29,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:29,888 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:27:29,889 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-12 20:27:29,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1578365262, now seen corresponding path program 1 times [2024-11-12 20:27:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:29,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92026193] [2024-11-12 20:27:29,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:29,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:30,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:30,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92026193] [2024-11-12 20:27:30,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92026193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:30,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:30,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:27:30,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424681947] [2024-11-12 20:27:30,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:30,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:27:30,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:30,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:27:30,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:27:30,879 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 36 [2024-11-12 20:27:30,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-12 20:27:30,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:30,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 36 [2024-11-12 20:27:30,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:31,011 INFO L124 PetriNetUnfolderBase]: 108/234 cut-off events. [2024-11-12 20:27:31,011 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 20:27:31,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 234 events. 108/234 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 906 event pairs, 46 based on Foata normal form. 14/227 useless extension candidates. Maximal degree in co-relation 419. Up to 124 conditions per place. [2024-11-12 20:27:31,015 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 16 selfloop transitions, 2 changer transitions 4/33 dead transitions. [2024-11-12 20:27:31,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 119 flow [2024-11-12 20:27:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:27:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:27:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-12 20:27:31,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-12 20:27:31,027 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 73 flow. Second operand 3 states and 63 transitions. [2024-11-12 20:27:31,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 119 flow [2024-11-12 20:27:31,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:27:31,032 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 61 flow [2024-11-12 20:27:31,034 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=3, PETRI_FLOW=61, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2024-11-12 20:27:31,038 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2024-11-12 20:27:31,039 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 61 flow [2024-11-12 20:27:31,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-12 20:27:31,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:31,039 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:27:31,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 20:27:31,040 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-12 20:27:31,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash -301111533, now seen corresponding path program 1 times [2024-11-12 20:27:31,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:31,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782863166] [2024-11-12 20:27:31,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:31,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:31,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:31,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782863166] [2024-11-12 20:27:31,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782863166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:31,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:31,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:27:31,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610056001] [2024-11-12 20:27:31,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:31,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 20:27:31,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:31,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 20:27:31,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 20:27:31,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-11-12 20:27:31,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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) [2024-11-12 20:27:31,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:31,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-11-12 20:27:31,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:31,557 INFO L124 PetriNetUnfolderBase]: 85/187 cut-off events. [2024-11-12 20:27:31,557 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-12 20:27:31,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 187 events. 85/187 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 713 event pairs, 22 based on Foata normal form. 16/189 useless extension candidates. Maximal degree in co-relation 165. Up to 80 conditions per place. [2024-11-12 20:27:31,562 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 19 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-12 20:27:31,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 117 flow [2024-11-12 20:27:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:27:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:27:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-12 20:27:31,565 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-11-12 20:27:31,565 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 61 flow. Second operand 4 states and 68 transitions. [2024-11-12 20:27:31,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 117 flow [2024-11-12 20:27:31,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 113 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 20:27:31,567 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 59 flow [2024-11-12 20:27:31,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, 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=59, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2024-11-12 20:27:31,568 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -7 predicate places. [2024-11-12 20:27:31,568 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 59 flow [2024-11-12 20:27:31,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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) [2024-11-12 20:27:31,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:31,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:27:31,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 20:27:31,569 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-12 20:27:31,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:31,570 INFO L85 PathProgramCache]: Analyzing trace with hash 606018820, now seen corresponding path program 1 times [2024-11-12 20:27:31,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:31,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436473318] [2024-11-12 20:27:31,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:31,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:32,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:32,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436473318] [2024-11-12 20:27:32,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436473318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:32,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:32,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:27:32,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694804817] [2024-11-12 20:27:32,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:32,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:27:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:32,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:27:32,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:27:32,052 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-12 20:27:32,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-12 20:27:32,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:32,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-12 20:27:32,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:32,182 INFO L124 PetriNetUnfolderBase]: 64/146 cut-off events. [2024-11-12 20:27:32,182 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-12 20:27:32,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 146 events. 64/146 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 444 event pairs, 17 based on Foata normal form. 12/154 useless extension candidates. Maximal degree in co-relation 166. Up to 82 conditions per place. [2024-11-12 20:27:32,183 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 17 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2024-11-12 20:27:32,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 123 flow [2024-11-12 20:27:32,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 20:27:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-12 20:27:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-11-12 20:27:32,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-11-12 20:27:32,188 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 59 flow. Second operand 4 states and 74 transitions. [2024-11-12 20:27:32,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 123 flow [2024-11-12 20:27:32,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 117 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-12 20:27:32,190 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 91 flow [2024-11-12 20:27:32,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-11-12 20:27:32,191 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2024-11-12 20:27:32,192 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 91 flow [2024-11-12 20:27:32,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-12 20:27:32,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:32,192 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:27:32,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 20:27:32,193 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-12 20:27:32,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash -505439968, now seen corresponding path program 2 times [2024-11-12 20:27:32,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:32,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235670877] [2024-11-12 20:27:32,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:32,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:32,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235670877] [2024-11-12 20:27:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235670877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:32,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:32,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:27:32,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985171172] [2024-11-12 20:27:32,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:32,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 20:27:32,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 20:27:32,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 20:27:32,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-12 20:27:32,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-12 20:27:32,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:32,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-12 20:27:32,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:32,653 INFO L124 PetriNetUnfolderBase]: 43/123 cut-off events. [2024-11-12 20:27:32,653 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-12 20:27:32,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 123 events. 43/123 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 355 event pairs, 3 based on Foata normal form. 4/121 useless extension candidates. Maximal degree in co-relation 162. Up to 34 conditions per place. [2024-11-12 20:27:32,655 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 15 selfloop transitions, 10 changer transitions 0/33 dead transitions. [2024-11-12 20:27:32,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 157 flow [2024-11-12 20:27:32,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 20:27:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-12 20:27:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-11-12 20:27:32,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-12 20:27:32,658 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 91 flow. Second operand 5 states and 87 transitions. [2024-11-12 20:27:32,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 157 flow [2024-11-12 20:27:32,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 20:27:32,661 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 109 flow [2024-11-12 20:27:32,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2024-11-12 20:27:32,662 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2024-11-12 20:27:32,663 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 109 flow [2024-11-12 20:27:32,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2024-11-12 20:27:32,663 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:32,663 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:27:32,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 20:27:32,664 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-12 20:27:32,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:32,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2097592129, now seen corresponding path program 1 times [2024-11-12 20:27:32,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:32,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752959839] [2024-11-12 20:27:32,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:32,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:33,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:33,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752959839] [2024-11-12 20:27:33,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752959839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:33,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:33,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 20:27:33,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407414457] [2024-11-12 20:27:33,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:33,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 20:27:33,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:33,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 20:27:33,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 20:27:33,072 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-11-12 20:27:33,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-12 20:27:33,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:33,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-11-12 20:27:33,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:33,175 INFO L124 PetriNetUnfolderBase]: 49/125 cut-off events. [2024-11-12 20:27:33,176 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-11-12 20:27:33,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 125 events. 49/125 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 353 event pairs, 17 based on Foata normal form. 4/126 useless extension candidates. Maximal degree in co-relation 165. Up to 42 conditions per place. [2024-11-12 20:27:33,177 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 20 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-11-12 20:27:33,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 30 transitions, 165 flow [2024-11-12 20:27:33,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 20:27:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 20:27:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-11-12 20:27:33,178 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33796296296296297 [2024-11-12 20:27:33,178 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 109 flow. Second operand 6 states and 73 transitions. [2024-11-12 20:27:33,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 30 transitions, 165 flow [2024-11-12 20:27:33,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 135 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-12 20:27:33,180 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 85 flow [2024-11-12 20:27:33,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=85, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2024-11-12 20:27:33,181 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2024-11-12 20:27:33,181 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 85 flow [2024-11-12 20:27:33,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 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) [2024-11-12 20:27:33,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 20:27:33,182 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 20:27:33,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 20:27:33,182 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2024-11-12 20:27:33,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 20:27:33,183 INFO L85 PathProgramCache]: Analyzing trace with hash -600845862, now seen corresponding path program 1 times [2024-11-12 20:27:33,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 20:27:33,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663994790] [2024-11-12 20:27:33,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 20:27:33,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 20:27:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 20:27:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 20:27:33,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 20:27:33,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663994790] [2024-11-12 20:27:33,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663994790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 20:27:33,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 20:27:33,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 20:27:33,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847747588] [2024-11-12 20:27:33,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 20:27:33,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 20:27:33,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 20:27:33,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 20:27:33,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 20:27:33,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 36 [2024-11-12 20:27:33,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-12 20:27:33,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 20:27:33,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 36 [2024-11-12 20:27:33,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 20:27:33,530 INFO L124 PetriNetUnfolderBase]: 38/107 cut-off events. [2024-11-12 20:27:33,531 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-12 20:27:33,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 107 events. 38/107 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 330 event pairs, 22 based on Foata normal form. 4/103 useless extension candidates. Maximal degree in co-relation 122. Up to 75 conditions per place. [2024-11-12 20:27:33,532 INFO L140 encePairwiseOnDemand]: 34/36 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-11-12 20:27:33,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 125 flow [2024-11-12 20:27:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 20:27:33,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 20:27:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-11-12 20:27:33,535 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-11-12 20:27:33,535 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 85 flow. Second operand 3 states and 53 transitions. [2024-11-12 20:27:33,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 125 flow [2024-11-12 20:27:33,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 116 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-12 20:27:33,536 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2024-11-12 20:27:33,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2024-11-12 20:27:33,537 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, -5 predicate places. [2024-11-12 20:27:33,537 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2024-11-12 20:27:33,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-12 20:27:33,542 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2024-11-12 20:27:33,543 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2024-11-12 20:27:33,543 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2024-11-12 20:27:33,543 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2024-11-12 20:27:33,544 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2024-11-12 20:27:33,544 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2024-11-12 20:27:33,544 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2024-11-12 20:27:33,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2024-11-12 20:27:33,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2024-11-12 20:27:33,546 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2024-11-12 20:27:33,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 20:27:33,546 INFO L421 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-12 20:27:33,552 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 20:27:33,552 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 20:27:33,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:27:33 BasicIcfg [2024-11-12 20:27:33,558 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 20:27:33,558 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 20:27:33,558 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 20:27:33,559 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 20:27:33,559 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:27:29" (3/4) ... [2024-11-12 20:27:33,561 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 20:27:33,563 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-12 20:27:33,564 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-12 20:27:33,575 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 252 nodes and edges [2024-11-12 20:27:33,575 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-12 20:27:33,576 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-12 20:27:33,576 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-12 20:27:33,677 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 20:27:33,678 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 20:27:33,678 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 20:27:33,678 INFO L158 Benchmark]: Toolchain (without parser) took 6792.16ms. Allocated memory was 176.2MB in the beginning and 524.3MB in the end (delta: 348.1MB). Free memory was 105.6MB in the beginning and 299.2MB in the end (delta: -193.6MB). Peak memory consumption was 157.3MB. Max. memory is 16.1GB. [2024-11-12 20:27:33,679 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 20:27:33,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 665.52ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 125.8MB in the end (delta: -20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-12 20:27:33,679 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.54ms. Allocated memory is still 176.2MB. Free memory was 125.8MB in the beginning and 122.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 20:27:33,679 INFO L158 Benchmark]: Boogie Preprocessor took 84.27ms. Allocated memory is still 176.2MB. Free memory was 122.7MB in the beginning and 119.1MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 20:27:33,680 INFO L158 Benchmark]: RCFGBuilder took 1873.15ms. Allocated memory was 176.2MB in the beginning and 241.2MB in the end (delta: 65.0MB). Free memory was 119.1MB in the beginning and 85.2MB in the end (delta: 33.9MB). Peak memory consumption was 116.6MB. Max. memory is 16.1GB. [2024-11-12 20:27:33,681 INFO L158 Benchmark]: TraceAbstraction took 3970.43ms. Allocated memory was 241.2MB in the beginning and 524.3MB in the end (delta: 283.1MB). Free memory was 85.2MB in the beginning and 305.5MB in the end (delta: -220.3MB). Peak memory consumption was 62.8MB. Max. memory is 16.1GB. [2024-11-12 20:27:33,681 INFO L158 Benchmark]: Witness Printer took 119.62ms. Allocated memory is still 524.3MB. Free memory was 305.5MB in the beginning and 299.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-12 20:27:33,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 113.2MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 665.52ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 125.8MB in the end (delta: -20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.54ms. Allocated memory is still 176.2MB. Free memory was 125.8MB in the beginning and 122.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.27ms. Allocated memory is still 176.2MB. Free memory was 122.7MB in the beginning and 119.1MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1873.15ms. Allocated memory was 176.2MB in the beginning and 241.2MB in the end (delta: 65.0MB). Free memory was 119.1MB in the beginning and 85.2MB in the end (delta: 33.9MB). Peak memory consumption was 116.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3970.43ms. Allocated memory was 241.2MB in the beginning and 524.3MB in the end (delta: 283.1MB). Free memory was 85.2MB in the beginning and 305.5MB in the end (delta: -220.3MB). Peak memory consumption was 62.8MB. Max. memory is 16.1GB. * Witness Printer took 119.62ms. Allocated memory is still 524.3MB. Free memory was 305.5MB in the beginning and 299.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 938]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 938]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 948]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 948]: 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, 63 locations, 10 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: 3.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 113 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 309 IncrementalHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 2 mSDtfsCounter, 309 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=4, InterpolantAutomatonStates: 25, 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, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 20:27:33,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE