./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 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/weaver/popl20-figure1-alt.wvr.c -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 3c66e95d4d33d89eed9ab2f285249dafeef639a3ca9f6d879b87b944d1b8c0ce --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:02:44,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:02:44,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:02:44,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:02:44,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:02:44,664 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:02:44,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:02:44,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:02:44,666 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:02:44,667 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:02:44,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:02:44,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:02:44,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:02:44,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:02:44,671 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:02:44,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:02:44,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:02:44,671 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:02:44,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:02:44,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:02:44,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:02:44,675 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:02:44,675 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:02:44,675 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:02:44,676 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:02:44,676 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:02:44,676 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:02:44,676 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:02:44,676 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:02:44,677 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:02:44,677 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:02:44,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:02:44,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:02:44,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:02:44,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:02:44,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:02:44,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:02:44,678 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:02:44,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:02:44,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:02:44,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:02:44,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:02:44,681 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:02:44,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:02:44,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c66e95d4d33d89eed9ab2f285249dafeef639a3ca9f6d879b87b944d1b8c0ce [2024-10-15 00:02:44,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:02:44,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:02:44,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:02:44,956 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:02:44,957 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:02:44,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-10-15 00:02:46,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:02:46,604 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:02:46,604 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2024-10-15 00:02:46,610 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e1abbad/639dc6143b204cf4aa35f7e83d593111/FLAGaa92152f4 [2024-10-15 00:02:46,622 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31e1abbad/639dc6143b204cf4aa35f7e83d593111 [2024-10-15 00:02:46,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:02:46,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:02:46,626 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:02:46,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:02:46,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:02:46,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b4e097f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46, skipping insertion in model container [2024-10-15 00:02:46,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,648 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:02:46,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:02:46,824 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:02:46,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:02:46,867 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:02:46,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46 WrapperNode [2024-10-15 00:02:46,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:02:46,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:02:46,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:02:46,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:02:46,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,907 INFO L138 Inliner]: procedures = 20, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 75 [2024-10-15 00:02:46,908 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:02:46,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:02:46,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:02:46,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:02:46,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,930 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]. [2024-10-15 00:02:46,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,933 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,939 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:02:46,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:02:46,940 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:02:46,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:02:46,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (1/1) ... [2024-10-15 00:02:46,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:02:46,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:46,975 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) [2024-10-15 00:02:46,985 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 [2024-10-15 00:02:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:02:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:02:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:02:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:02:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:02:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:02:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:02:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:02:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:02:47,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:02:47,024 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:02:47,113 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:02:47,114 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:02:47,327 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:02:47,327 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:02:47,435 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:02:47,435 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-15 00:02:47,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:02:47 BoogieIcfgContainer [2024-10-15 00:02:47,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:02:47,441 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:02:47,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:02:47,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:02:47,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:02:46" (1/3) ... [2024-10-15 00:02:47,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9a552d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:02:47, skipping insertion in model container [2024-10-15 00:02:47,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:02:46" (2/3) ... [2024-10-15 00:02:47,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e9a552d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:02:47, skipping insertion in model container [2024-10-15 00:02:47,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:02:47" (3/3) ... [2024-10-15 00:02:47,449 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2024-10-15 00:02:47,468 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:02:47,469 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-15 00:02:47,469 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:02:47,522 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-15 00:02:47,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 84 flow [2024-10-15 00:02:47,588 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2024-10-15 00:02:47,588 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-15 00:02:47,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 2/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 75 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-10-15 00:02:47,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 84 flow [2024-10-15 00:02:47,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 76 flow [2024-10-15 00:02:47,603 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:02:47,611 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;@53a07f7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:02:47,612 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-15 00:02:47,617 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:02:47,617 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-15 00:02:47,617 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-15 00:02:47,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:47,619 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-15 00:02:47,619 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:47,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:47,625 INFO L85 PathProgramCache]: Analyzing trace with hash 279617358, now seen corresponding path program 1 times [2024-10-15 00:02:47,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:47,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418929918] [2024-10-15 00:02:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:47,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:47,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:47,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418929918] [2024-10-15 00:02:47,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418929918] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:47,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:47,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:02:47,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976109147] [2024-10-15 00:02:47,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:47,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:47,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:47,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:47,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-15 00:02:47,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-10-15 00:02:47,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:47,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-15 00:02:47,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:48,087 INFO L124 PetriNetUnfolderBase]: 120/297 cut-off events. [2024-10-15 00:02:48,087 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-15 00:02:48,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 297 events. 120/297 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1342 event pairs, 40 based on Foata normal form. 4/244 useless extension candidates. Maximal degree in co-relation 484. Up to 165 conditions per place. [2024-10-15 00:02:48,094 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 25 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2024-10-15 00:02:48,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 155 flow [2024-10-15 00:02:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-10-15 00:02:48,105 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7428571428571429 [2024-10-15 00:02:48,106 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 76 flow. Second operand 3 states and 78 transitions. [2024-10-15 00:02:48,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 155 flow [2024-10-15 00:02:48,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-15 00:02:48,111 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 84 flow [2024-10-15 00:02:48,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2024-10-15 00:02:48,115 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2024-10-15 00:02:48,115 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 84 flow [2024-10-15 00:02:48,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-10-15 00:02:48,116 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:48,116 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:48,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:02:48,116 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:48,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:48,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1870647887, now seen corresponding path program 1 times [2024-10-15 00:02:48,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:48,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019700363] [2024-10-15 00:02:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:48,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:48,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:48,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019700363] [2024-10-15 00:02:48,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019700363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:48,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:48,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:48,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044913697] [2024-10-15 00:02:48,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:48,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:48,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:48,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:48,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:48,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-15 00:02:48,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-10-15 00:02:48,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:48,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-15 00:02:48,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:48,305 INFO L124 PetriNetUnfolderBase]: 205/415 cut-off events. [2024-10-15 00:02:48,305 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-15 00:02:48,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 415 events. 205/415 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1943 event pairs, 103 based on Foata normal form. 12/361 useless extension candidates. Maximal degree in co-relation 443. Up to 290 conditions per place. [2024-10-15 00:02:48,311 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 37 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2024-10-15 00:02:48,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 214 flow [2024-10-15 00:02:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-15 00:02:48,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-15 00:02:48,314 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 84 flow. Second operand 4 states and 91 transitions. [2024-10-15 00:02:48,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 214 flow [2024-10-15 00:02:48,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:48,318 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 111 flow [2024-10-15 00:02:48,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-10-15 00:02:48,319 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2024-10-15 00:02:48,319 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 111 flow [2024-10-15 00:02:48,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-10-15 00:02:48,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:48,319 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:48,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 00:02:48,319 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:48,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:48,320 INFO L85 PathProgramCache]: Analyzing trace with hash -998275543, now seen corresponding path program 1 times [2024-10-15 00:02:48,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:48,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896495214] [2024-10-15 00:02:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:48,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:48,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:48,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896495214] [2024-10-15 00:02:48,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896495214] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:48,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:48,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:48,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839276864] [2024-10-15 00:02:48,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:48,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:48,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:48,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:48,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:48,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-15 00:02:48,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-10-15 00:02:48,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:48,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-15 00:02:48,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:48,532 INFO L124 PetriNetUnfolderBase]: 211/560 cut-off events. [2024-10-15 00:02:48,532 INFO L125 PetriNetUnfolderBase]: For 139/151 co-relation queries the response was YES. [2024-10-15 00:02:48,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 560 events. 211/560 cut-off events. For 139/151 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3043 event pairs, 53 based on Foata normal form. 15/504 useless extension candidates. Maximal degree in co-relation 410. Up to 138 conditions per place. [2024-10-15 00:02:48,537 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 40 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-10-15 00:02:48,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 278 flow [2024-10-15 00:02:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-10-15 00:02:48,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7714285714285715 [2024-10-15 00:02:48,539 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 111 flow. Second operand 4 states and 108 transitions. [2024-10-15 00:02:48,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 278 flow [2024-10-15 00:02:48,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:48,541 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 166 flow [2024-10-15 00:02:48,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-10-15 00:02:48,541 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-10-15 00:02:48,542 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 166 flow [2024-10-15 00:02:48,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-10-15 00:02:48,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:48,542 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:48,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-15 00:02:48,542 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:48,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1270229465, now seen corresponding path program 1 times [2024-10-15 00:02:48,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:48,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449176043] [2024-10-15 00:02:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:48,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:48,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:48,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449176043] [2024-10-15 00:02:48,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449176043] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:48,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550474377] [2024-10-15 00:02:48,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:48,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:48,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:48,598 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) [2024-10-15 00:02:48,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:02:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:48,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:02:48,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:48,678 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:02:48,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550474377] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:48,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:02:48,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-10-15 00:02:48,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278872017] [2024-10-15 00:02:48,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:48,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:48,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:48,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:48,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:02:48,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-15 00:02:48,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2024-10-15 00:02:48,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:48,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-15 00:02:48,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:48,771 INFO L124 PetriNetUnfolderBase]: 233/575 cut-off events. [2024-10-15 00:02:48,772 INFO L125 PetriNetUnfolderBase]: For 629/652 co-relation queries the response was YES. [2024-10-15 00:02:48,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 575 events. 233/575 cut-off events. For 629/652 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2965 event pairs, 57 based on Foata normal form. 34/561 useless extension candidates. Maximal degree in co-relation 650. Up to 235 conditions per place. [2024-10-15 00:02:48,775 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 30 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2024-10-15 00:02:48,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 287 flow [2024-10-15 00:02:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:48,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-10-15 00:02:48,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-10-15 00:02:48,779 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 166 flow. Second operand 4 states and 93 transitions. [2024-10-15 00:02:48,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 287 flow [2024-10-15 00:02:48,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 281 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:48,781 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 213 flow [2024-10-15 00:02:48,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-10-15 00:02:48,782 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2024-10-15 00:02:48,782 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 213 flow [2024-10-15 00:02:48,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 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) [2024-10-15 00:02:48,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:48,783 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:48,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 00:02:48,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:48,984 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:48,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:48,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1433182473, now seen corresponding path program 1 times [2024-10-15 00:02:48,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:48,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87454732] [2024-10-15 00:02:48,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:48,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:49,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:49,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87454732] [2024-10-15 00:02:49,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87454732] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:49,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:49,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:49,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119295272] [2024-10-15 00:02:49,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:49,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:49,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:49,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:49,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:49,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-15 00:02:49,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 213 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) [2024-10-15 00:02:49,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:49,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-15 00:02:49,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:49,210 INFO L124 PetriNetUnfolderBase]: 507/1061 cut-off events. [2024-10-15 00:02:49,210 INFO L125 PetriNetUnfolderBase]: For 2033/2132 co-relation queries the response was YES. [2024-10-15 00:02:49,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 1061 events. 507/1061 cut-off events. For 2033/2132 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5841 event pairs, 257 based on Foata normal form. 45/1050 useless extension candidates. Maximal degree in co-relation 1017. Up to 649 conditions per place. [2024-10-15 00:02:49,217 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 57 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-10-15 00:02:49,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 541 flow [2024-10-15 00:02:49,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:49,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-10-15 00:02:49,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-15 00:02:49,219 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 213 flow. Second operand 4 states and 88 transitions. [2024-10-15 00:02:49,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 541 flow [2024-10-15 00:02:49,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 496 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:49,222 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 221 flow [2024-10-15 00:02:49,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=221, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-10-15 00:02:49,223 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-10-15 00:02:49,223 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 221 flow [2024-10-15 00:02:49,223 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) [2024-10-15 00:02:49,223 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:49,224 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:49,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:02:49,224 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:49,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1546690069, now seen corresponding path program 1 times [2024-10-15 00:02:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:49,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282188297] [2024-10-15 00:02:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:49,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:49,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:49,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282188297] [2024-10-15 00:02:49,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282188297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:49,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:49,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:02:49,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692874292] [2024-10-15 00:02:49,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:49,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:49,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:49,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:49,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-15 00:02:49,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 221 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) [2024-10-15 00:02:49,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:49,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-15 00:02:49,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:49,366 INFO L124 PetriNetUnfolderBase]: 323/702 cut-off events. [2024-10-15 00:02:49,366 INFO L125 PetriNetUnfolderBase]: For 1114/1204 co-relation queries the response was YES. [2024-10-15 00:02:49,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2142 conditions, 702 events. 323/702 cut-off events. For 1114/1204 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3683 event pairs, 219 based on Foata normal form. 32/689 useless extension candidates. Maximal degree in co-relation 969. Up to 559 conditions per place. [2024-10-15 00:02:49,371 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 29 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2024-10-15 00:02:49,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 279 flow [2024-10-15 00:02:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:49,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-10-15 00:02:49,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-10-15 00:02:49,372 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 221 flow. Second operand 3 states and 58 transitions. [2024-10-15 00:02:49,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 279 flow [2024-10-15 00:02:49,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:49,376 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 218 flow [2024-10-15 00:02:49,376 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-10-15 00:02:49,381 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-10-15 00:02:49,381 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 218 flow [2024-10-15 00:02:49,381 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) [2024-10-15 00:02:49,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:49,381 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:49,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-15 00:02:49,381 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:49,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:49,382 INFO L85 PathProgramCache]: Analyzing trace with hash -919793078, now seen corresponding path program 1 times [2024-10-15 00:02:49,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:49,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940531769] [2024-10-15 00:02:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:49,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:49,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:49,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940531769] [2024-10-15 00:02:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940531769] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:49,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942893538] [2024-10-15 00:02:49,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:49,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:49,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:49,444 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) [2024-10-15 00:02:49,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:02:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:49,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:49,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:49,527 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:02:49,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942893538] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:49,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:02:49,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-15 00:02:49,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170752592] [2024-10-15 00:02:49,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:49,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:02:49,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:49,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:02:49,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:02:49,537 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-15 00:02:49,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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) [2024-10-15 00:02:49,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:49,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-15 00:02:49,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:49,727 INFO L124 PetriNetUnfolderBase]: 463/968 cut-off events. [2024-10-15 00:02:49,727 INFO L125 PetriNetUnfolderBase]: For 1283/1348 co-relation queries the response was YES. [2024-10-15 00:02:49,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2808 conditions, 968 events. 463/968 cut-off events. For 1283/1348 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5101 event pairs, 69 based on Foata normal form. 69/986 useless extension candidates. Maximal degree in co-relation 2789. Up to 305 conditions per place. [2024-10-15 00:02:49,734 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 67 selfloop transitions, 7 changer transitions 0/84 dead transitions. [2024-10-15 00:02:49,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 84 transitions, 566 flow [2024-10-15 00:02:49,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:02:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:02:49,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-10-15 00:02:49,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-15 00:02:49,736 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 218 flow. Second operand 6 states and 126 transitions. [2024-10-15 00:02:49,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 84 transitions, 566 flow [2024-10-15 00:02:49,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 565 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:49,741 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 227 flow [2024-10-15 00:02:49,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-10-15 00:02:49,742 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 17 predicate places. [2024-10-15 00:02:49,742 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 227 flow [2024-10-15 00:02:49,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 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) [2024-10-15 00:02:49,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:49,742 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:49,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:02:49,943 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 [2024-10-15 00:02:49,943 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:49,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash -148096930, now seen corresponding path program 1 times [2024-10-15 00:02:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522497371] [2024-10-15 00:02:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:49,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:50,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:50,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522497371] [2024-10-15 00:02:50,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522497371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:50,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:50,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:02:50,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379850704] [2024-10-15 00:02:50,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:50,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:50,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:50,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:50,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:50,052 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-10-15 00:02:50,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 227 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) [2024-10-15 00:02:50,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:50,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-10-15 00:02:50,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:50,150 INFO L124 PetriNetUnfolderBase]: 323/723 cut-off events. [2024-10-15 00:02:50,150 INFO L125 PetriNetUnfolderBase]: For 1266/1315 co-relation queries the response was YES. [2024-10-15 00:02:50,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 723 events. 323/723 cut-off events. For 1266/1315 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3766 event pairs, 219 based on Foata normal form. 17/707 useless extension candidates. Maximal degree in co-relation 2226. Up to 554 conditions per place. [2024-10-15 00:02:50,154 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 26 selfloop transitions, 1 changer transitions 3/41 dead transitions. [2024-10-15 00:02:50,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 41 transitions, 283 flow [2024-10-15 00:02:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-10-15 00:02:50,156 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-10-15 00:02:50,156 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 227 flow. Second operand 3 states and 57 transitions. [2024-10-15 00:02:50,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 41 transitions, 283 flow [2024-10-15 00:02:50,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 268 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-15 00:02:50,159 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 204 flow [2024-10-15 00:02:50,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-10-15 00:02:50,159 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2024-10-15 00:02:50,159 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 204 flow [2024-10-15 00:02:50,160 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) [2024-10-15 00:02:50,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:50,160 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-15 00:02:50,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-15 00:02:50,160 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:50,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:50,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1551185963, now seen corresponding path program 1 times [2024-10-15 00:02:50,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:50,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119231862] [2024-10-15 00:02:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:50,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:50,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:50,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119231862] [2024-10-15 00:02:50,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119231862] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:50,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376982984] [2024-10-15 00:02:50,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:50,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:50,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:50,209 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) [2024-10-15 00:02:50,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:02:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:50,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:50,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:50,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:50,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376982984] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:50,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:50,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:02:50,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567070239] [2024-10-15 00:02:50,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:50,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:02:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:50,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:02:50,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:02:50,335 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-15 00:02:50,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 204 flow. Second operand has 12 states, 12 states have (on average 13.666666666666666) internal successors, (164), 12 states have internal predecessors, (164), 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) [2024-10-15 00:02:50,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:50,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-15 00:02:50,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:50,674 INFO L124 PetriNetUnfolderBase]: 1022/2112 cut-off events. [2024-10-15 00:02:50,675 INFO L125 PetriNetUnfolderBase]: For 3466/3630 co-relation queries the response was YES. [2024-10-15 00:02:50,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6128 conditions, 2112 events. 1022/2112 cut-off events. For 3466/3630 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11962 event pairs, 194 based on Foata normal form. 158/2260 useless extension candidates. Maximal degree in co-relation 6109. Up to 744 conditions per place. [2024-10-15 00:02:50,684 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 135 selfloop transitions, 11 changer transitions 1/155 dead transitions. [2024-10-15 00:02:50,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 155 transitions, 1132 flow [2024-10-15 00:02:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:02:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:02:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-10-15 00:02:50,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-15 00:02:50,686 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 204 flow. Second operand 10 states and 220 transitions. [2024-10-15 00:02:50,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 155 transitions, 1132 flow [2024-10-15 00:02:50,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 155 transitions, 1131 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:50,690 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 279 flow [2024-10-15 00:02:50,690 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=279, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-10-15 00:02:50,691 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 23 predicate places. [2024-10-15 00:02:50,691 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 279 flow [2024-10-15 00:02:50,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.666666666666666) internal successors, (164), 12 states have internal predecessors, (164), 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) [2024-10-15 00:02:50,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:50,692 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:50,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:02:50,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:50,893 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:50,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash -390193898, now seen corresponding path program 1 times [2024-10-15 00:02:50,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:50,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81757363] [2024-10-15 00:02:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:50,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:50,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:50,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81757363] [2024-10-15 00:02:50,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81757363] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:50,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233917688] [2024-10-15 00:02:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:50,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:50,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:50,937 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) [2024-10-15 00:02:50,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:02:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:50,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:50,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:51,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:51,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233917688] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:51,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:51,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-10-15 00:02:51,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512424259] [2024-10-15 00:02:51,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:51,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-15 00:02:51,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:51,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-15 00:02:51,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-10-15 00:02:51,070 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-15 00:02:51,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 279 flow. Second operand has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 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) [2024-10-15 00:02:51,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:51,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-15 00:02:51,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:51,327 INFO L124 PetriNetUnfolderBase]: 826/2106 cut-off events. [2024-10-15 00:02:51,327 INFO L125 PetriNetUnfolderBase]: For 5315/5454 co-relation queries the response was YES. [2024-10-15 00:02:51,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6472 conditions, 2106 events. 826/2106 cut-off events. For 5315/5454 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13763 event pairs, 87 based on Foata normal form. 266/2363 useless extension candidates. Maximal degree in co-relation 6450. Up to 389 conditions per place. [2024-10-15 00:02:51,339 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 82 selfloop transitions, 15 changer transitions 0/111 dead transitions. [2024-10-15 00:02:51,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 111 transitions, 802 flow [2024-10-15 00:02:51,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 00:02:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-15 00:02:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-10-15 00:02:51,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7061224489795919 [2024-10-15 00:02:51,341 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 279 flow. Second operand 7 states and 173 transitions. [2024-10-15 00:02:51,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 111 transitions, 802 flow [2024-10-15 00:02:51,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 111 transitions, 773 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-10-15 00:02:51,347 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 383 flow [2024-10-15 00:02:51,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-10-15 00:02:51,348 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 30 predicate places. [2024-10-15 00:02:51,348 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 383 flow [2024-10-15 00:02:51,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.0) internal successors, (162), 9 states have internal predecessors, (162), 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) [2024-10-15 00:02:51,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:51,349 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:51,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:51,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:51,553 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:51,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:51,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1361864348, now seen corresponding path program 1 times [2024-10-15 00:02:51,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:51,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149707582] [2024-10-15 00:02:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:51,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:51,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149707582] [2024-10-15 00:02:51,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149707582] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:51,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185994244] [2024-10-15 00:02:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:51,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:51,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:51,633 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) [2024-10-15 00:02:51,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:02:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:51,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:51,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:51,718 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:02:51,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185994244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:51,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:02:51,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-15 00:02:51,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266005709] [2024-10-15 00:02:51,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:51,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:02:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:51,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:02:51,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:02:51,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-15 00:02:51,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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) [2024-10-15 00:02:51,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:51,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-15 00:02:51,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:51,997 INFO L124 PetriNetUnfolderBase]: 1274/2650 cut-off events. [2024-10-15 00:02:51,997 INFO L125 PetriNetUnfolderBase]: For 8186/8308 co-relation queries the response was YES. [2024-10-15 00:02:52,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9048 conditions, 2650 events. 1274/2650 cut-off events. For 8186/8308 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16546 event pairs, 209 based on Foata normal form. 115/2630 useless extension candidates. Maximal degree in co-relation 9020. Up to 665 conditions per place. [2024-10-15 00:02:52,015 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 115 selfloop transitions, 7 changer transitions 0/132 dead transitions. [2024-10-15 00:02:52,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 132 transitions, 1316 flow [2024-10-15 00:02:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:02:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:02:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-10-15 00:02:52,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-10-15 00:02:52,017 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 383 flow. Second operand 6 states and 119 transitions. [2024-10-15 00:02:52,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 132 transitions, 1316 flow [2024-10-15 00:02:52,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 132 transitions, 1231 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-10-15 00:02:52,054 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 366 flow [2024-10-15 00:02:52,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2024-10-15 00:02:52,055 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 32 predicate places. [2024-10-15 00:02:52,055 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 366 flow [2024-10-15 00:02:52,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 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) [2024-10-15 00:02:52,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:52,055 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:52,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:02:52,256 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,SelfDestructingSolverStorable10 [2024-10-15 00:02:52,257 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:52,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:52,257 INFO L85 PathProgramCache]: Analyzing trace with hash 3071850, now seen corresponding path program 1 times [2024-10-15 00:02:52,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:52,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3990012] [2024-10-15 00:02:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:52,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:52,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:52,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3990012] [2024-10-15 00:02:52,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3990012] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:52,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679210005] [2024-10-15 00:02:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:52,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:52,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:52,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:52,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:02:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:52,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:52,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:52,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:52,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679210005] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:52,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:52,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:02:52,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432800288] [2024-10-15 00:02:52,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:52,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:02:52,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:52,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:02:52,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:02:52,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-10-15 00:02:52,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 366 flow. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 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) [2024-10-15 00:02:52,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:52,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-10-15 00:02:52,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:52,975 INFO L124 PetriNetUnfolderBase]: 2041/4312 cut-off events. [2024-10-15 00:02:52,975 INFO L125 PetriNetUnfolderBase]: For 12670/12836 co-relation queries the response was YES. [2024-10-15 00:02:52,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14854 conditions, 4312 events. 2041/4312 cut-off events. For 12670/12836 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 27980 event pairs, 453 based on Foata normal form. 225/4499 useless extension candidates. Maximal degree in co-relation 14827. Up to 1473 conditions per place. [2024-10-15 00:02:53,001 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 202 selfloop transitions, 13 changer transitions 6/231 dead transitions. [2024-10-15 00:02:53,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 231 transitions, 2269 flow [2024-10-15 00:02:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:02:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:02:53,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-10-15 00:02:53,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-10-15 00:02:53,002 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 366 flow. Second operand 10 states and 205 transitions. [2024-10-15 00:02:53,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 231 transitions, 2269 flow [2024-10-15 00:02:53,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 231 transitions, 2239 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-15 00:02:53,013 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 429 flow [2024-10-15 00:02:53,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=429, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2024-10-15 00:02:53,014 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 40 predicate places. [2024-10-15 00:02:53,014 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 429 flow [2024-10-15 00:02:53,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 12 states have internal predecessors, (172), 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) [2024-10-15 00:02:53,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:53,015 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-10-15 00:02:53,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:53,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:53,216 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:53,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:53,217 INFO L85 PathProgramCache]: Analyzing trace with hash 879384207, now seen corresponding path program 1 times [2024-10-15 00:02:53,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:53,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584818901] [2024-10-15 00:02:53,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:53,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:53,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:53,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584818901] [2024-10-15 00:02:53,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584818901] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:53,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971431199] [2024-10-15 00:02:53,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:53,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:53,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:53,284 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:53,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:02:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:53,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 00:02:53,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:53,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:53,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971431199] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:53,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:53,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:02:53,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362075768] [2024-10-15 00:02:53,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:53,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 00:02:53,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:53,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 00:02:53,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-15 00:02:53,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-15 00:02:53,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 429 flow. Second operand has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 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) [2024-10-15 00:02:53,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:53,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-15 00:02:53,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:54,545 INFO L124 PetriNetUnfolderBase]: 3284/7520 cut-off events. [2024-10-15 00:02:54,545 INFO L125 PetriNetUnfolderBase]: For 28180/28582 co-relation queries the response was YES. [2024-10-15 00:02:54,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26841 conditions, 7520 events. 3284/7520 cut-off events. For 28180/28582 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 57584 event pairs, 275 based on Foata normal form. 220/7702 useless extension candidates. Maximal degree in co-relation 26812. Up to 1303 conditions per place. [2024-10-15 00:02:54,605 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 210 selfloop transitions, 45 changer transitions 4/275 dead transitions. [2024-10-15 00:02:54,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 275 transitions, 2292 flow [2024-10-15 00:02:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-15 00:02:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-15 00:02:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 314 transitions. [2024-10-15 00:02:54,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7476190476190476 [2024-10-15 00:02:54,607 INFO L175 Difference]: Start difference. First operand has 77 places, 59 transitions, 429 flow. Second operand 12 states and 314 transitions. [2024-10-15 00:02:54,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 275 transitions, 2292 flow [2024-10-15 00:02:54,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 275 transitions, 2191 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-10-15 00:02:54,651 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 922 flow [2024-10-15 00:02:54,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=922, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2024-10-15 00:02:54,652 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 58 predicate places. [2024-10-15 00:02:54,653 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 922 flow [2024-10-15 00:02:54,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 13 states have internal predecessors, (223), 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) [2024-10-15 00:02:54,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:54,653 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-10-15 00:02:54,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-15 00:02:54,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:54,855 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:54,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1565291932, now seen corresponding path program 2 times [2024-10-15 00:02:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:54,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105991592] [2024-10-15 00:02:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:54,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:54,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105991592] [2024-10-15 00:02:54,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105991592] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:54,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491056502] [2024-10-15 00:02:54,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:54,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:54,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:54,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:54,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:02:55,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:02:55,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:55,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:02:55,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-15 00:02:55,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:55,128 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-15 00:02:55,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491056502] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:55,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:55,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-15 00:02:55,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340821099] [2024-10-15 00:02:55,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:55,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 00:02:55,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:55,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 00:02:55,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:02:55,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-10-15 00:02:55,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 922 flow. Second operand has 15 states, 15 states have (on average 13.266666666666667) internal successors, (199), 15 states have internal predecessors, (199), 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) [2024-10-15 00:02:55,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:55,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-10-15 00:02:55,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:56,930 INFO L124 PetriNetUnfolderBase]: 5579/10425 cut-off events. [2024-10-15 00:02:56,931 INFO L125 PetriNetUnfolderBase]: For 49804/50191 co-relation queries the response was YES. [2024-10-15 00:02:56,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39875 conditions, 10425 events. 5579/10425 cut-off events. For 49804/50191 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 72281 event pairs, 645 based on Foata normal form. 492/10905 useless extension candidates. Maximal degree in co-relation 39835. Up to 2949 conditions per place. [2024-10-15 00:02:56,987 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 362 selfloop transitions, 16 changer transitions 1/388 dead transitions. [2024-10-15 00:02:56,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 388 transitions, 4450 flow [2024-10-15 00:02:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 00:02:56,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-15 00:02:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 291 transitions. [2024-10-15 00:02:56,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5542857142857143 [2024-10-15 00:02:56,992 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 922 flow. Second operand 15 states and 291 transitions. [2024-10-15 00:02:56,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 388 transitions, 4450 flow [2024-10-15 00:02:57,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 388 transitions, 4023 flow, removed 174 selfloop flow, removed 6 redundant places. [2024-10-15 00:02:57,046 INFO L231 Difference]: Finished difference. Result has 105 places, 94 transitions, 872 flow [2024-10-15 00:02:57,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=872, PETRI_PLACES=105, PETRI_TRANSITIONS=94} [2024-10-15 00:02:57,046 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 68 predicate places. [2024-10-15 00:02:57,046 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 94 transitions, 872 flow [2024-10-15 00:02:57,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.266666666666667) internal successors, (199), 15 states have internal predecessors, (199), 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) [2024-10-15 00:02:57,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:57,047 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:57,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 00:02:57,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-15 00:02:57,248 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:57,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:57,248 INFO L85 PathProgramCache]: Analyzing trace with hash 2134235657, now seen corresponding path program 2 times [2024-10-15 00:02:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:57,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412056287] [2024-10-15 00:02:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:57,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:57,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412056287] [2024-10-15 00:02:57,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412056287] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:57,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333755451] [2024-10-15 00:02:57,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:57,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:57,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:57,393 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:57,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 00:02:57,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:02:57,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:57,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:02:57,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:57,503 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-15 00:02:57,503 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-15 00:02:57,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333755451] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:57,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:57,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-10-15 00:02:57,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745508100] [2024-10-15 00:02:57,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:57,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 00:02:57,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:57,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 00:02:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:02:57,607 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-10-15 00:02:57,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 872 flow. Second operand has 15 states, 15 states have (on average 14.4) internal successors, (216), 15 states have internal predecessors, (216), 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) [2024-10-15 00:02:57,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:57,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-10-15 00:02:57,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:59,369 INFO L124 PetriNetUnfolderBase]: 7053/13328 cut-off events. [2024-10-15 00:02:59,369 INFO L125 PetriNetUnfolderBase]: For 66130/67642 co-relation queries the response was YES. [2024-10-15 00:02:59,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51081 conditions, 13328 events. 7053/13328 cut-off events. For 66130/67642 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 96436 event pairs, 460 based on Foata normal form. 1007/14303 useless extension candidates. Maximal degree in co-relation 51042. Up to 2551 conditions per place. [2024-10-15 00:02:59,439 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 536 selfloop transitions, 21 changer transitions 39/606 dead transitions. [2024-10-15 00:02:59,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 606 transitions, 7605 flow [2024-10-15 00:02:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 00:02:59,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-15 00:02:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 284 transitions. [2024-10-15 00:02:59,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.540952380952381 [2024-10-15 00:02:59,444 INFO L175 Difference]: Start difference. First operand has 105 places, 94 transitions, 872 flow. Second operand 15 states and 284 transitions. [2024-10-15 00:02:59,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 606 transitions, 7605 flow [2024-10-15 00:02:59,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 606 transitions, 7381 flow, removed 52 selfloop flow, removed 14 redundant places. [2024-10-15 00:02:59,639 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 874 flow [2024-10-15 00:02:59,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=874, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2024-10-15 00:02:59,641 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 68 predicate places. [2024-10-15 00:02:59,641 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 874 flow [2024-10-15 00:02:59,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.4) internal successors, (216), 15 states have internal predecessors, (216), 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) [2024-10-15 00:02:59,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:59,642 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-10-15 00:02:59,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-15 00:02:59,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-15 00:02:59,843 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:02:59,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:59,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1993551215, now seen corresponding path program 2 times [2024-10-15 00:02:59,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:59,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350030676] [2024-10-15 00:02:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:59,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:00,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:00,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350030676] [2024-10-15 00:03:00,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350030676] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:00,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068567848] [2024-10-15 00:03:00,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:03:00,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:00,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:00,011 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:00,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 00:03:00,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 00:03:00,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:03:00,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 00:03:00,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:00,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:00,436 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:00,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068567848] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:00,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:00,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-10-15 00:03:00,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389794437] [2024-10-15 00:03:00,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:00,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-15 00:03:00,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-15 00:03:00,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-15 00:03:00,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-15 00:03:00,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 95 transitions, 874 flow. Second operand has 25 states, 25 states have (on average 17.08) internal successors, (427), 25 states have internal predecessors, (427), 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) [2024-10-15 00:03:00,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:00,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-15 00:03:00,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:02,997 INFO L124 PetriNetUnfolderBase]: 8201/19222 cut-off events. [2024-10-15 00:03:02,998 INFO L125 PetriNetUnfolderBase]: For 127422/129080 co-relation queries the response was YES. [2024-10-15 00:03:03,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73413 conditions, 19222 events. 8201/19222 cut-off events. For 127422/129080 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 160653 event pairs, 417 based on Foata normal form. 598/19805 useless extension candidates. Maximal degree in co-relation 73376. Up to 3487 conditions per place. [2024-10-15 00:03:03,112 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 443 selfloop transitions, 205 changer transitions 0/666 dead transitions. [2024-10-15 00:03:03,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 666 transitions, 6594 flow [2024-10-15 00:03:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:03:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:03:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 592 transitions. [2024-10-15 00:03:03,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2024-10-15 00:03:03,114 INFO L175 Difference]: Start difference. First operand has 105 places, 95 transitions, 874 flow. Second operand 24 states and 592 transitions. [2024-10-15 00:03:03,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 666 transitions, 6594 flow [2024-10-15 00:03:03,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 666 transitions, 5747 flow, removed 118 selfloop flow, removed 15 redundant places. [2024-10-15 00:03:03,201 INFO L231 Difference]: Finished difference. Result has 132 places, 255 transitions, 3310 flow [2024-10-15 00:03:03,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3310, PETRI_PLACES=132, PETRI_TRANSITIONS=255} [2024-10-15 00:03:03,202 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 95 predicate places. [2024-10-15 00:03:03,202 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 255 transitions, 3310 flow [2024-10-15 00:03:03,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 17.08) internal successors, (427), 25 states have internal predecessors, (427), 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) [2024-10-15 00:03:03,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:03,202 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-10-15 00:03:03,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:03,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-15 00:03:03,403 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:03:03,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:03,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1741751087, now seen corresponding path program 3 times [2024-10-15 00:03:03,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:03,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085439181] [2024-10-15 00:03:03,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:03,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:03,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:03,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085439181] [2024-10-15 00:03:03,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085439181] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:03,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690070089] [2024-10-15 00:03:03,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 00:03:03,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:03,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:03,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:03,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 00:03:04,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-10-15 00:03:04,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:03:04,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-15 00:03:04,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:04,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:04,152 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:04,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690070089] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:04,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:04,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-10-15 00:03:04,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006153383] [2024-10-15 00:03:04,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:04,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-15 00:03:04,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:04,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-15 00:03:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-15 00:03:04,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-15 00:03:04,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 255 transitions, 3310 flow. Second operand has 49 states, 49 states have (on average 17.040816326530614) internal successors, (835), 49 states have internal predecessors, (835), 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) [2024-10-15 00:03:04,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:04,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-15 00:03:04,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:15,511 INFO L124 PetriNetUnfolderBase]: 22071/51608 cut-off events. [2024-10-15 00:03:15,512 INFO L125 PetriNetUnfolderBase]: For 824117/827445 co-relation queries the response was YES. [2024-10-15 00:03:16,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191095 conditions, 51608 events. 22071/51608 cut-off events. For 824117/827445 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 461417 event pairs, 1397 based on Foata normal form. 1520/53113 useless extension candidates. Maximal degree in co-relation 191040. Up to 8679 conditions per place. [2024-10-15 00:03:16,254 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 875 selfloop transitions, 821 changer transitions 0/1714 dead transitions. [2024-10-15 00:03:16,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 1714 transitions, 19054 flow [2024-10-15 00:03:16,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-15 00:03:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-10-15 00:03:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 1192 transitions. [2024-10-15 00:03:16,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7095238095238096 [2024-10-15 00:03:16,259 INFO L175 Difference]: Start difference. First operand has 132 places, 255 transitions, 3310 flow. Second operand 48 states and 1192 transitions. [2024-10-15 00:03:16,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 1714 transitions, 19054 flow [2024-10-15 00:03:16,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 1714 transitions, 17106 flow, removed 951 selfloop flow, removed 4 redundant places. [2024-10-15 00:03:16,828 INFO L231 Difference]: Finished difference. Result has 220 places, 871 transitions, 12966 flow [2024-10-15 00:03:16,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3076, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=12966, PETRI_PLACES=220, PETRI_TRANSITIONS=871} [2024-10-15 00:03:16,829 INFO L277 CegarLoopForPetriNet]: 37 programPoint places, 183 predicate places. [2024-10-15 00:03:16,829 INFO L471 AbstractCegarLoop]: Abstraction has has 220 places, 871 transitions, 12966 flow [2024-10-15 00:03:16,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 17.040816326530614) internal successors, (835), 49 states have internal predecessors, (835), 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) [2024-10-15 00:03:16,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:16,830 INFO L204 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-10-15 00:03:16,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 00:03:17,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-15 00:03:17,035 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-10-15 00:03:17,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:17,035 INFO L85 PathProgramCache]: Analyzing trace with hash 386223791, now seen corresponding path program 4 times [2024-10-15 00:03:17,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:17,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013589955] [2024-10-15 00:03:17,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:17,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:18,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:18,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:18,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013589955] [2024-10-15 00:03:18,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013589955] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:18,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702621740] [2024-10-15 00:03:18,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 00:03:18,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:18,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:18,745 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:18,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 00:03:18,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 00:03:18,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:03:18,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-15 00:03:18,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:19,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:19,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:21,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702621740] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:21,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:21,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-10-15 00:03:21,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558300674] [2024-10-15 00:03:21,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:21,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-10-15 00:03:21,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:21,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-10-15 00:03:21,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-10-15 00:03:21,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-10-15 00:03:21,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 871 transitions, 12966 flow. Second operand has 97 states, 97 states have (on average 17.02061855670103) internal successors, (1651), 97 states have internal predecessors, (1651), 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) [2024-10-15 00:03:21,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:21,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-10-15 00:03:21,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand