./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-nonblocking-cntr-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-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 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:04:17,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:04:18,029 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-20 22:04:18,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:04:18,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:04:18,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:04:18,061 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:04:18,061 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:04:18,061 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:04:18,062 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:04:18,062 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 22:04:18,062 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 22:04:18,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:04:18,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:04:18,063 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:04:18,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:04:18,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 22:04:18,065 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:04:18,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:04:18,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:04:18,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:04:18,068 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 22:04:18,069 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 22:04:18,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 22:04:18,069 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:04:18,069 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-20 22:04:18,069 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:04:18,069 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:04:18,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:04:18,070 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:04:18,070 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:04:18,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:04:18,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 22:04:18,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 22:04:18,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:04:18,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:04:18,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 22:04:18,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 22:04:18,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:04:18,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 22:04:18,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 22:04:18,074 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 22:04:18,074 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 22:04:18,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 22:04:18,075 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ead2366baa94ec77674f75cd829f45857f5651e204e91d33a749a2af2868461 [2024-11-20 22:04:18,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:04:18,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:04:18,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:04:18,358 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:04:18,358 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:04:18,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-20 22:04:19,563 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:04:19,745 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:04:19,745 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-11-20 22:04:19,751 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed592253f/d575c148fbd8478bbde39ff1274031c6/FLAGae9dc979c [2024-11-20 22:04:19,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed592253f/d575c148fbd8478bbde39ff1274031c6 [2024-11-20 22:04:19,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:04:19,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:04:19,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:04:19,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:04:19,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:04:19,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:19,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592ca832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19, skipping insertion in model container [2024-11-20 22:04:19,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:19,788 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:04:19,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:04:19,953 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:04:19,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:04:19,983 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:04:19,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19 WrapperNode [2024-11-20 22:04:19,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:04:19,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:04:19,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:04:19,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:04:19,990 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:19,996 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:20,010 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 50 [2024-11-20 22:04:20,010 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:04:20,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:04:20,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:04:20,011 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:04:20,019 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:20,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:20,020 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:20,034 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 22:04:20,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:20,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:20,038 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:20,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:20,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:20,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:20,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:04:20,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:04:20,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:04:20,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:04:20,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (1/1) ... [2024-11-20 22:04:20,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 22:04:20,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:20,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 22:04:20,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 22:04:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:04:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 22:04:20,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 22:04:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 22:04:20,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 22:04:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:04:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 22:04:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 22:04:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:04:20,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:04:20,143 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 22:04:20,230 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:04:20,238 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:04:20,433 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 22:04:20,433 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:04:20,553 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:04:20,554 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 22:04:20,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:04:20 BoogieIcfgContainer [2024-11-20 22:04:20,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:04:20,556 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 22:04:20,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 22:04:20,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 22:04:20,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:04:19" (1/3) ... [2024-11-20 22:04:20,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bdc925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:04:20, skipping insertion in model container [2024-11-20 22:04:20,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:04:19" (2/3) ... [2024-11-20 22:04:20,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bdc925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:04:20, skipping insertion in model container [2024-11-20 22:04:20,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:04:20" (3/3) ... [2024-11-20 22:04:20,562 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-11-20 22:04:20,579 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 22:04:20,580 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-20 22:04:20,580 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 22:04:20,628 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 22:04:20,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2024-11-20 22:04:20,687 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2024-11-20 22:04:20,688 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 22:04:20,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 65 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-20 22:04:20,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2024-11-20 22:04:20,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 29 transitions, 70 flow [2024-11-20 22:04:20,709 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 22:04:20,717 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;@1068c1c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 22:04:20,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-20 22:04:20,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 22:04:20,731 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-20 22:04:20,732 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 22:04:20,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:20,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 22:04:20,733 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:20,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:20,738 INFO L85 PathProgramCache]: Analyzing trace with hash 278512112, now seen corresponding path program 1 times [2024-11-20 22:04:20,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:20,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556980942] [2024-11-20 22:04:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:20,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:20,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:20,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:20,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556980942] [2024-11-20 22:04:20,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556980942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:20,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:20,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:04:20,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858661241] [2024-11-20 22:04:20,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:20,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:04:20,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:20,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:04:20,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:04:20,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:20,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:20,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:20,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:20,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:21,078 INFO L124 PetriNetUnfolderBase]: 143/299 cut-off events. [2024-11-20 22:04:21,078 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-20 22:04:21,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 299 events. 143/299 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1252 event pairs, 49 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 514. Up to 192 conditions per place. [2024-11-20 22:04:21,084 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 27 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2024-11-20 22:04:21,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 155 flow [2024-11-20 22:04:21,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:04:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:04:21,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-20 22:04:21,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-20 22:04:21,097 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 70 flow. Second operand 3 states and 69 transitions. [2024-11-20 22:04:21,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 155 flow [2024-11-20 22:04:21,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 22:04:21,102 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 80 flow [2024-11-20 22:04:21,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-11-20 22:04:21,108 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-11-20 22:04:21,109 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 80 flow [2024-11-20 22:04:21,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:21,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:21,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:21,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 22:04:21,110 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:21,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:21,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1362177907, now seen corresponding path program 1 times [2024-11-20 22:04:21,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:21,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008709854] [2024-11-20 22:04:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:21,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:21,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:21,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008709854] [2024-11-20 22:04:21,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008709854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:21,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:21,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:04:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076917070] [2024-11-20 22:04:21,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:21,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:21,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:21,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:21,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:21,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-20 22:04:21,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:21,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:21,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-20 22:04:21,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:21,366 INFO L124 PetriNetUnfolderBase]: 243/471 cut-off events. [2024-11-20 22:04:21,370 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-11-20 22:04:21,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 471 events. 243/471 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2245 event pairs, 111 based on Foata normal form. 14/388 useless extension candidates. Maximal degree in co-relation 528. Up to 339 conditions per place. [2024-11-20 22:04:21,374 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 40 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-11-20 22:04:21,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 224 flow [2024-11-20 22:04:21,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:21,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-20 22:04:21,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-20 22:04:21,380 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 80 flow. Second operand 4 states and 78 transitions. [2024-11-20 22:04:21,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 224 flow [2024-11-20 22:04:21,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:21,382 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 107 flow [2024-11-20 22:04:21,382 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-11-20 22:04:21,398 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-11-20 22:04:21,399 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 107 flow [2024-11-20 22:04:21,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:21,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:21,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:21,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 22:04:21,400 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:21,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:21,401 INFO L85 PathProgramCache]: Analyzing trace with hash -351004553, now seen corresponding path program 1 times [2024-11-20 22:04:21,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:21,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932545917] [2024-11-20 22:04:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:21,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:21,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:21,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932545917] [2024-11-20 22:04:21,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932545917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:21,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:21,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:04:21,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221899666] [2024-11-20 22:04:21,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:21,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:21,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:21,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:21,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:21,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:21,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:21,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:21,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:21,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:21,613 INFO L124 PetriNetUnfolderBase]: 213/476 cut-off events. [2024-11-20 22:04:21,613 INFO L125 PetriNetUnfolderBase]: For 118/122 co-relation queries the response was YES. [2024-11-20 22:04:21,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 476 events. 213/476 cut-off events. For 118/122 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2282 event pairs, 51 based on Foata normal form. 4/400 useless extension candidates. Maximal degree in co-relation 365. Up to 162 conditions per place. [2024-11-20 22:04:21,619 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 40 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-11-20 22:04:21,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 57 transitions, 276 flow [2024-11-20 22:04:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-20 22:04:21,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.71875 [2024-11-20 22:04:21,621 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 107 flow. Second operand 4 states and 92 transitions. [2024-11-20 22:04:21,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 57 transitions, 276 flow [2024-11-20 22:04:21,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:21,623 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 168 flow [2024-11-20 22:04:21,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-11-20 22:04:21,624 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2024-11-20 22:04:21,624 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 168 flow [2024-11-20 22:04:21,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:21,624 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:21,624 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:21,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 22:04:21,624 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:21,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:21,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1346266202, now seen corresponding path program 1 times [2024-11-20 22:04:21,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:21,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779748401] [2024-11-20 22:04:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:21,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:21,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:21,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779748401] [2024-11-20 22:04:21,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779748401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:21,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:21,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 22:04:21,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467790455] [2024-11-20 22:04:21,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:21,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:04:21,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:21,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:04:21,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:04:21,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:21,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:21,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:21,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:21,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:21,783 INFO L124 PetriNetUnfolderBase]: 303/614 cut-off events. [2024-11-20 22:04:21,783 INFO L125 PetriNetUnfolderBase]: For 783/828 co-relation queries the response was YES. [2024-11-20 22:04:21,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 614 events. 303/614 cut-off events. For 783/828 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3213 event pairs, 158 based on Foata normal form. 22/578 useless extension candidates. Maximal degree in co-relation 881. Up to 380 conditions per place. [2024-11-20 22:04:21,787 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 42 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-11-20 22:04:21,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 340 flow [2024-11-20 22:04:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:04:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:04:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-20 22:04:21,791 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-20 22:04:21,791 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 168 flow. Second operand 3 states and 66 transitions. [2024-11-20 22:04:21,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 340 flow [2024-11-20 22:04:21,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 22:04:21,795 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 186 flow [2024-11-20 22:04:21,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2024-11-20 22:04:21,796 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2024-11-20 22:04:21,796 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 186 flow [2024-11-20 22:04:21,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:21,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:21,796 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:21,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 22:04:21,797 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:21,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:21,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1791318402, now seen corresponding path program 1 times [2024-11-20 22:04:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:21,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968582835] [2024-11-20 22:04:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:21,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:21,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:21,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968582835] [2024-11-20 22:04:21,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968582835] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:21,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727008453] [2024-11-20 22:04:21,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:21,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:21,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:21,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:21,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 22:04:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:21,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:04:21,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:21,925 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:04:21,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727008453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:21,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:04:21,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-20 22:04:21,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128427952] [2024-11-20 22:04:21,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:21,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:21,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:21,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:21,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 22:04:21,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:21,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:21,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:21,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:21,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:22,050 INFO L124 PetriNetUnfolderBase]: 359/791 cut-off events. [2024-11-20 22:04:22,051 INFO L125 PetriNetUnfolderBase]: For 1176/1190 co-relation queries the response was YES. [2024-11-20 22:04:22,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 791 events. 359/791 cut-off events. For 1176/1190 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4236 event pairs, 82 based on Foata normal form. 56/777 useless extension candidates. Maximal degree in co-relation 983. Up to 330 conditions per place. [2024-11-20 22:04:22,055 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 33 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-11-20 22:04:22,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 367 flow [2024-11-20 22:04:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-20 22:04:22,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2024-11-20 22:04:22,058 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 186 flow. Second operand 4 states and 79 transitions. [2024-11-20 22:04:22,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 367 flow [2024-11-20 22:04:22,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 348 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-20 22:04:22,064 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 296 flow [2024-11-20 22:04:22,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-11-20 22:04:22,066 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2024-11-20 22:04:22,066 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 296 flow [2024-11-20 22:04:22,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:22,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:22,068 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:22,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 22:04:22,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:22,272 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:22,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash -711695819, now seen corresponding path program 1 times [2024-11-20 22:04:22,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:22,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743519051] [2024-11-20 22:04:22,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:22,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:22,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743519051] [2024-11-20 22:04:22,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743519051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783030763] [2024-11-20 22:04:22,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:22,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:22,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:22,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:22,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 22:04:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:22,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:04:22,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:22,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:22,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:22,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783030763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:22,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:22,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-20 22:04:22,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803473354] [2024-11-20 22:04:22,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:22,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 22:04:22,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:22,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 22:04:22,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:04:22,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:22,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:22,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:22,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:22,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:22,674 INFO L124 PetriNetUnfolderBase]: 313/684 cut-off events. [2024-11-20 22:04:22,674 INFO L125 PetriNetUnfolderBase]: For 1428/1452 co-relation queries the response was YES. [2024-11-20 22:04:22,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 684 events. 313/684 cut-off events. For 1428/1452 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3474 event pairs, 11 based on Foata normal form. 8/681 useless extension candidates. Maximal degree in co-relation 741. Up to 246 conditions per place. [2024-11-20 22:04:22,679 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 46 selfloop transitions, 14 changer transitions 0/70 dead transitions. [2024-11-20 22:04:22,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 486 flow [2024-11-20 22:04:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 22:04:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 22:04:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-11-20 22:04:22,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-20 22:04:22,680 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 296 flow. Second operand 7 states and 128 transitions. [2024-11-20 22:04:22,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 486 flow [2024-11-20 22:04:22,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 469 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:22,684 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 285 flow [2024-11-20 22:04:22,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-11-20 22:04:22,685 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2024-11-20 22:04:22,685 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 285 flow [2024-11-20 22:04:22,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:22,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:22,685 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:22,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 22:04:22,889 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,SelfDestructingSolverStorable5 [2024-11-20 22:04:22,890 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:22,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:22,891 INFO L85 PathProgramCache]: Analyzing trace with hash 26533655, now seen corresponding path program 1 times [2024-11-20 22:04:22,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:22,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968337279] [2024-11-20 22:04:22,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:22,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:22,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:22,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968337279] [2024-11-20 22:04:22,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968337279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:22,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143251469] [2024-11-20 22:04:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:22,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:22,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:22,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:22,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 22:04:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:22,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:04:22,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:23,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:04:23,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143251469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:23,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:23,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2024-11-20 22:04:23,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030684940] [2024-11-20 22:04:23,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:23,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 22:04:23,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:23,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 22:04:23,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 22:04:23,056 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-11-20 22:04:23,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 285 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:23,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:23,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-11-20 22:04:23,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:23,199 INFO L124 PetriNetUnfolderBase]: 480/993 cut-off events. [2024-11-20 22:04:23,199 INFO L125 PetriNetUnfolderBase]: For 1924/1966 co-relation queries the response was YES. [2024-11-20 22:04:23,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2895 conditions, 993 events. 480/993 cut-off events. For 1924/1966 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5382 event pairs, 60 based on Foata normal form. 55/937 useless extension candidates. Maximal degree in co-relation 1031. Up to 278 conditions per place. [2024-11-20 22:04:23,205 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 58 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-11-20 22:04:23,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 529 flow [2024-11-20 22:04:23,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 22:04:23,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 22:04:23,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-11-20 22:04:23,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5580357142857143 [2024-11-20 22:04:23,206 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 285 flow. Second operand 7 states and 125 transitions. [2024-11-20 22:04:23,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 529 flow [2024-11-20 22:04:23,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 77 transitions, 477 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-20 22:04:23,209 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 237 flow [2024-11-20 22:04:23,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=237, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2024-11-20 22:04:23,210 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2024-11-20 22:04:23,210 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 237 flow [2024-11-20 22:04:23,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:23,210 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:23,210 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:23,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 22:04:23,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:23,415 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:23,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2046029116, now seen corresponding path program 1 times [2024-11-20 22:04:23,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:23,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641586927] [2024-11-20 22:04:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:23,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:23,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641586927] [2024-11-20 22:04:23,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641586927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:23,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:23,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:04:23,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065402836] [2024-11-20 22:04:23,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:23,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:23,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:23,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:23,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:23,481 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:23,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:23,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:23,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:23,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:23,547 INFO L124 PetriNetUnfolderBase]: 343/702 cut-off events. [2024-11-20 22:04:23,547 INFO L125 PetriNetUnfolderBase]: For 1501/1538 co-relation queries the response was YES. [2024-11-20 22:04:23,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2191 conditions, 702 events. 343/702 cut-off events. For 1501/1538 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3594 event pairs, 189 based on Foata normal form. 22/688 useless extension candidates. Maximal degree in co-relation 1029. Up to 521 conditions per place. [2024-11-20 22:04:23,571 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 38 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-11-20 22:04:23,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 387 flow [2024-11-20 22:04:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-11-20 22:04:23,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-11-20 22:04:23,572 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 237 flow. Second operand 4 states and 69 transitions. [2024-11-20 22:04:23,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 387 flow [2024-11-20 22:04:23,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 373 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-20 22:04:23,574 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 229 flow [2024-11-20 22:04:23,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-11-20 22:04:23,575 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2024-11-20 22:04:23,575 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 229 flow [2024-11-20 22:04:23,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:23,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:23,576 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:23,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 22:04:23,576 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:23,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash -824890747, now seen corresponding path program 1 times [2024-11-20 22:04:23,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:23,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884061402] [2024-11-20 22:04:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:23,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:23,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:23,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884061402] [2024-11-20 22:04:23,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884061402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:23,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659306574] [2024-11-20 22:04:23,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:23,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:23,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:23,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:23,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 22:04:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:23,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:04:23,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:23,699 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 22:04:23,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659306574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:23,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 22:04:23,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-20 22:04:23,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174074001] [2024-11-20 22:04:23,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:23,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 22:04:23,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:23,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:04:23,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 22:04:23,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-20 22:04:23,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 229 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:23,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:23,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-20 22:04:23,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:23,841 INFO L124 PetriNetUnfolderBase]: 462/952 cut-off events. [2024-11-20 22:04:23,842 INFO L125 PetriNetUnfolderBase]: For 1701/1728 co-relation queries the response was YES. [2024-11-20 22:04:23,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2858 conditions, 952 events. 462/952 cut-off events. For 1701/1728 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5140 event pairs, 71 based on Foata normal form. 34/940 useless extension candidates. Maximal degree in co-relation 1327. Up to 313 conditions per place. [2024-11-20 22:04:23,847 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 68 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2024-11-20 22:04:23,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 81 transitions, 633 flow [2024-11-20 22:04:23,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:04:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 22:04:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-11-20 22:04:23,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-20 22:04:23,848 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 229 flow. Second operand 6 states and 96 transitions. [2024-11-20 22:04:23,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 81 transitions, 633 flow [2024-11-20 22:04:23,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 627 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:04:23,850 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 231 flow [2024-11-20 22:04:23,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=231, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-11-20 22:04:23,851 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2024-11-20 22:04:23,851 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 231 flow [2024-11-20 22:04:23,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:23,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:23,851 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-20 22:04:23,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 22:04:24,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:24,055 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:24,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:24,056 INFO L85 PathProgramCache]: Analyzing trace with hash 198190925, now seen corresponding path program 1 times [2024-11-20 22:04:24,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:24,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753541350] [2024-11-20 22:04:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:24,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:24,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:24,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753541350] [2024-11-20 22:04:24,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753541350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:24,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540660325] [2024-11-20 22:04:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:24,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:24,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:24,092 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:04:24,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 22:04:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:24,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:04:24,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:24,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:24,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540660325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:24,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:24,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:04:24,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307244981] [2024-11-20 22:04:24,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:24,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 22:04:24,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:24,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:04:24,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:04:24,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-11-20 22:04:24,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 231 flow. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:24,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:24,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-11-20 22:04:24,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:24,475 INFO L124 PetriNetUnfolderBase]: 1020/2019 cut-off events. [2024-11-20 22:04:24,476 INFO L125 PetriNetUnfolderBase]: For 4254/4311 co-relation queries the response was YES. [2024-11-20 22:04:24,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6404 conditions, 2019 events. 1020/2019 cut-off events. For 4254/4311 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11639 event pairs, 187 based on Foata normal form. 102/2107 useless extension candidates. Maximal degree in co-relation 2792. Up to 719 conditions per place. [2024-11-20 22:04:24,489 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 123 selfloop transitions, 12 changer transitions 0/142 dead transitions. [2024-11-20 22:04:24,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 142 transitions, 1159 flow [2024-11-20 22:04:24,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 22:04:24,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 22:04:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-11-20 22:04:24,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-11-20 22:04:24,491 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 231 flow. Second operand 10 states and 172 transitions. [2024-11-20 22:04:24,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 142 transitions, 1159 flow [2024-11-20 22:04:24,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 142 transitions, 1132 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-20 22:04:24,496 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 300 flow [2024-11-20 22:04:24,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=300, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2024-11-20 22:04:24,497 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2024-11-20 22:04:24,497 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 300 flow [2024-11-20 22:04:24,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:24,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:24,498 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:24,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 22:04:24,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-20 22:04:24,699 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:24,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:24,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1730354245, now seen corresponding path program 1 times [2024-11-20 22:04:24,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:24,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025282888] [2024-11-20 22:04:24,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:24,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:24,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:24,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025282888] [2024-11-20 22:04:24,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025282888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:24,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131241316] [2024-11-20 22:04:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:24,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:24,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:24,734 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) [2024-11-20 22:04:24,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 22:04:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:24,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 22:04:24,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:24,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:24,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131241316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:24,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:24,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-20 22:04:24,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858773806] [2024-11-20 22:04:24,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:24,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 22:04:24,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:24,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 22:04:24,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-20 22:04:24,825 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:24,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 300 flow. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:24,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:24,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:24,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:25,045 INFO L124 PetriNetUnfolderBase]: 755/1777 cut-off events. [2024-11-20 22:04:25,046 INFO L125 PetriNetUnfolderBase]: For 4749/4801 co-relation queries the response was YES. [2024-11-20 22:04:25,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5638 conditions, 1777 events. 755/1777 cut-off events. For 4749/4801 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11105 event pairs, 69 based on Foata normal form. 249/1982 useless extension candidates. Maximal degree in co-relation 3366. Up to 328 conditions per place. [2024-11-20 22:04:25,057 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 81 selfloop transitions, 21 changer transitions 0/115 dead transitions. [2024-11-20 22:04:25,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 115 transitions, 889 flow [2024-11-20 22:04:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 22:04:25,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 22:04:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-11-20 22:04:25,059 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-20 22:04:25,059 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 300 flow. Second operand 8 states and 160 transitions. [2024-11-20 22:04:25,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 115 transitions, 889 flow [2024-11-20 22:04:25,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 115 transitions, 860 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-20 22:04:25,065 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 491 flow [2024-11-20 22:04:25,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=491, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2024-11-20 22:04:25,066 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2024-11-20 22:04:25,066 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 491 flow [2024-11-20 22:04:25,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:25,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:25,067 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:25,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 22:04:25,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:25,267 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:25,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:25,268 INFO L85 PathProgramCache]: Analyzing trace with hash 432391016, now seen corresponding path program 1 times [2024-11-20 22:04:25,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:25,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831517292] [2024-11-20 22:04:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:25,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:25,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:25,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831517292] [2024-11-20 22:04:25,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831517292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:25,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:25,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 22:04:25,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261808595] [2024-11-20 22:04:25,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:25,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 22:04:25,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:25,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 22:04:25,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 22:04:25,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:25,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:25,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:25,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:25,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:25,476 INFO L124 PetriNetUnfolderBase]: 701/1636 cut-off events. [2024-11-20 22:04:25,476 INFO L125 PetriNetUnfolderBase]: For 5294/5361 co-relation queries the response was YES. [2024-11-20 22:04:25,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5715 conditions, 1636 events. 701/1636 cut-off events. For 5294/5361 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10162 event pairs, 433 based on Foata normal form. 36/1627 useless extension candidates. Maximal degree in co-relation 4246. Up to 1119 conditions per place. [2024-11-20 22:04:25,486 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 58 selfloop transitions, 8 changer transitions 0/79 dead transitions. [2024-11-20 22:04:25,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 749 flow [2024-11-20 22:04:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 22:04:25,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 22:04:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-11-20 22:04:25,487 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-20 22:04:25,487 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 491 flow. Second operand 4 states and 68 transitions. [2024-11-20 22:04:25,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 749 flow [2024-11-20 22:04:25,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 79 transitions, 726 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-20 22:04:25,495 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 502 flow [2024-11-20 22:04:25,495 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=502, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-11-20 22:04:25,497 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 34 predicate places. [2024-11-20 22:04:25,497 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 502 flow [2024-11-20 22:04:25,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:25,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:25,497 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:25,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 22:04:25,498 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:25,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash -23246054, now seen corresponding path program 1 times [2024-11-20 22:04:25,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:25,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720984849] [2024-11-20 22:04:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:25,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:25,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:04:25,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:25,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720984849] [2024-11-20 22:04:25,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720984849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:25,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:25,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:04:25,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539478112] [2024-11-20 22:04:25,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:25,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:04:25,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:04:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:04:25,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 22:04:25,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 502 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:25,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:25,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 22:04:25,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:25,674 INFO L124 PetriNetUnfolderBase]: 701/1573 cut-off events. [2024-11-20 22:04:25,674 INFO L125 PetriNetUnfolderBase]: For 5632/5699 co-relation queries the response was YES. [2024-11-20 22:04:25,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5843 conditions, 1573 events. 701/1573 cut-off events. For 5632/5699 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9494 event pairs, 481 based on Foata normal form. 19/1554 useless extension candidates. Maximal degree in co-relation 4391. Up to 1226 conditions per place. [2024-11-20 22:04:25,684 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 48 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2024-11-20 22:04:25,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 598 flow [2024-11-20 22:04:25,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:04:25,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:04:25,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-20 22:04:25,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-20 22:04:25,685 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 502 flow. Second operand 3 states and 44 transitions. [2024-11-20 22:04:25,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 598 flow [2024-11-20 22:04:25,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 582 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 22:04:25,692 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 486 flow [2024-11-20 22:04:25,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=486, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-11-20 22:04:25,693 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2024-11-20 22:04:25,693 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 486 flow [2024-11-20 22:04:25,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:25,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:25,693 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:04:25,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 22:04:25,694 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:25,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:25,694 INFO L85 PathProgramCache]: Analyzing trace with hash -720627399, now seen corresponding path program 1 times [2024-11-20 22:04:25,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:25,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567249159] [2024-11-20 22:04:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:25,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 22:04:25,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:25,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567249159] [2024-11-20 22:04:25,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567249159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:04:25,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:04:25,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 22:04:25,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884574049] [2024-11-20 22:04:25,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:04:25,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 22:04:25,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:25,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 22:04:25,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 22:04:25,731 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-11-20 22:04:25,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:25,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:25,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-11-20 22:04:25,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:25,839 INFO L124 PetriNetUnfolderBase]: 701/1558 cut-off events. [2024-11-20 22:04:25,840 INFO L125 PetriNetUnfolderBase]: For 5204/5271 co-relation queries the response was YES. [2024-11-20 22:04:25,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5741 conditions, 1558 events. 701/1558 cut-off events. For 5204/5271 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9302 event pairs, 481 based on Foata normal form. 19/1543 useless extension candidates. Maximal degree in co-relation 5718. Up to 1207 conditions per place. [2024-11-20 22:04:25,849 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 46 selfloop transitions, 1 changer transitions 2/59 dead transitions. [2024-11-20 22:04:25,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 580 flow [2024-11-20 22:04:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 22:04:25,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 22:04:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2024-11-20 22:04:25,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-11-20 22:04:25,850 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 486 flow. Second operand 3 states and 43 transitions. [2024-11-20 22:04:25,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 580 flow [2024-11-20 22:04:25,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:25,857 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 480 flow [2024-11-20 22:04:25,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-11-20 22:04:25,858 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2024-11-20 22:04:25,858 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 480 flow [2024-11-20 22:04:25,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:25,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:25,858 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2024-11-20 22:04:25,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 22:04:25,858 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:25,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:25,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1647347825, now seen corresponding path program 1 times [2024-11-20 22:04:25,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:25,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702644117] [2024-11-20 22:04:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:25,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:25,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:25,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702644117] [2024-11-20 22:04:25,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702644117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:25,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555475070] [2024-11-20 22:04:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:25,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:25,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:25,913 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) [2024-11-20 22:04:25,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 22:04:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:25,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 22:04:25,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:26,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:26,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555475070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:26,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:26,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-20 22:04:26,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591271676] [2024-11-20 22:04:26,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:26,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 22:04:26,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:26,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 22:04:26,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 22:04:26,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:26,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 480 flow. Second operand has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:26,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:26,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:26,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:26,517 INFO L124 PetriNetUnfolderBase]: 1514/3561 cut-off events. [2024-11-20 22:04:26,517 INFO L125 PetriNetUnfolderBase]: For 13852/14018 co-relation queries the response was YES. [2024-11-20 22:04:26,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12678 conditions, 3561 events. 1514/3561 cut-off events. For 13852/14018 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 22971 event pairs, 97 based on Foata normal form. 125/3676 useless extension candidates. Maximal degree in co-relation 12654. Up to 719 conditions per place. [2024-11-20 22:04:26,538 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 122 selfloop transitions, 61 changer transitions 7/200 dead transitions. [2024-11-20 22:04:26,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 200 transitions, 1822 flow [2024-11-20 22:04:26,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 22:04:26,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-20 22:04:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 270 transitions. [2024-11-20 22:04:26,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6490384615384616 [2024-11-20 22:04:26,539 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 480 flow. Second operand 13 states and 270 transitions. [2024-11-20 22:04:26,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 200 transitions, 1822 flow [2024-11-20 22:04:26,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 200 transitions, 1821 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 22:04:26,553 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 1246 flow [2024-11-20 22:04:26,554 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1246, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2024-11-20 22:04:26,554 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2024-11-20 22:04:26,554 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 1246 flow [2024-11-20 22:04:26,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.153846153846153) internal successors, (171), 13 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:26,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:26,555 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1] [2024-11-20 22:04:26,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 22:04:26,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:26,756 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:26,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:26,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1843030431, now seen corresponding path program 2 times [2024-11-20 22:04:26,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:26,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691634331] [2024-11-20 22:04:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:26,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:26,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:26,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691634331] [2024-11-20 22:04:26,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691634331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:26,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965043851] [2024-11-20 22:04:26,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:04:26,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:26,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:26,864 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) [2024-11-20 22:04:26,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 22:04:26,893 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 22:04:26,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:04:26,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:04:26,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-20 22:04:26,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-20 22:04:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965043851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:27,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:27,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-20 22:04:27,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239994064] [2024-11-20 22:04:27,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:27,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 22:04:27,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:27,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 22:04:27,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-20 22:04:27,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-11-20 22:04:27,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 1246 flow. Second operand has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:27,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:27,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-11-20 22:04:27,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:27,874 INFO L124 PetriNetUnfolderBase]: 2927/5482 cut-off events. [2024-11-20 22:04:27,874 INFO L125 PetriNetUnfolderBase]: For 32418/32742 co-relation queries the response was YES. [2024-11-20 22:04:27,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21783 conditions, 5482 events. 2927/5482 cut-off events. For 32418/32742 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 31502 event pairs, 410 based on Foata normal form. 390/5872 useless extension candidates. Maximal degree in co-relation 21749. Up to 1498 conditions per place. [2024-11-20 22:04:27,967 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 335 selfloop transitions, 20 changer transitions 6/364 dead transitions. [2024-11-20 22:04:27,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 364 transitions, 5184 flow [2024-11-20 22:04:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 22:04:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-20 22:04:27,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 221 transitions. [2024-11-20 22:04:27,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46041666666666664 [2024-11-20 22:04:27,972 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 1246 flow. Second operand 15 states and 221 transitions. [2024-11-20 22:04:27,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 364 transitions, 5184 flow [2024-11-20 22:04:28,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 364 transitions, 5013 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-11-20 22:04:28,007 INFO L231 Difference]: Finished difference. Result has 92 places, 107 transitions, 1267 flow [2024-11-20 22:04:28,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1267, PETRI_PLACES=92, PETRI_TRANSITIONS=107} [2024-11-20 22:04:28,008 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 58 predicate places. [2024-11-20 22:04:28,008 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 107 transitions, 1267 flow [2024-11-20 22:04:28,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.266666666666667) internal successors, (139), 15 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:28,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:28,009 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2024-11-20 22:04:28,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 22:04:28,209 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,SelfDestructingSolverStorable15 [2024-11-20 22:04:28,210 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:28,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:28,210 INFO L85 PathProgramCache]: Analyzing trace with hash -512705999, now seen corresponding path program 2 times [2024-11-20 22:04:28,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:28,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843054447] [2024-11-20 22:04:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:28,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:28,347 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:28,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:28,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843054447] [2024-11-20 22:04:28,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843054447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:28,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857273605] [2024-11-20 22:04:28,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:04:28,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:28,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:28,349 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) [2024-11-20 22:04:28,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 22:04:28,393 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 22:04:28,393 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:04:28,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 22:04:28,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:28,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:28,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857273605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:28,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:28,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-20 22:04:28,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642060692] [2024-11-20 22:04:28,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:28,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 22:04:28,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:28,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 22:04:28,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-20 22:04:28,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:28,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 107 transitions, 1267 flow. Second operand has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:28,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:28,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:28,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:30,174 INFO L124 PetriNetUnfolderBase]: 4478/9927 cut-off events. [2024-11-20 22:04:30,174 INFO L125 PetriNetUnfolderBase]: For 76919/77763 co-relation queries the response was YES. [2024-11-20 22:04:30,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40234 conditions, 9927 events. 4478/9927 cut-off events. For 76919/77763 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 66612 event pairs, 251 based on Foata normal form. 484/10398 useless extension candidates. Maximal degree in co-relation 40203. Up to 2395 conditions per place. [2024-11-20 22:04:30,246 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 233 selfloop transitions, 245 changer transitions 11/500 dead transitions. [2024-11-20 22:04:30,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 500 transitions, 5704 flow [2024-11-20 22:04:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-20 22:04:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-20 22:04:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 534 transitions. [2024-11-20 22:04:30,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6675 [2024-11-20 22:04:30,249 INFO L175 Difference]: Start difference. First operand has 92 places, 107 transitions, 1267 flow. Second operand 25 states and 534 transitions. [2024-11-20 22:04:30,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 500 transitions, 5704 flow [2024-11-20 22:04:30,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 500 transitions, 5471 flow, removed 65 selfloop flow, removed 11 redundant places. [2024-11-20 22:04:30,298 INFO L231 Difference]: Finished difference. Result has 126 places, 293 transitions, 4587 flow [2024-11-20 22:04:30,298 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4587, PETRI_PLACES=126, PETRI_TRANSITIONS=293} [2024-11-20 22:04:30,298 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 92 predicate places. [2024-11-20 22:04:30,299 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 293 transitions, 4587 flow [2024-11-20 22:04:30,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.08) internal successors, (327), 25 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:30,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:30,299 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2024-11-20 22:04:30,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 22:04:30,499 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,SelfDestructingSolverStorable16 [2024-11-20 22:04:30,500 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:30,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:30,500 INFO L85 PathProgramCache]: Analyzing trace with hash -389255759, now seen corresponding path program 3 times [2024-11-20 22:04:30,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:30,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125489939] [2024-11-20 22:04:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:30,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:31,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125489939] [2024-11-20 22:04:31,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125489939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:31,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809641472] [2024-11-20 22:04:31,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 22:04:31,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:31,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:31,032 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) [2024-11-20 22:04:31,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 22:04:31,103 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2024-11-20 22:04:31,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:04:31,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-20 22:04:31,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:31,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:31,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809641472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:31,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:31,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2024-11-20 22:04:31,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676856892] [2024-11-20 22:04:31,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:31,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-20 22:04:31,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:31,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-20 22:04:31,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-20 22:04:31,867 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:31,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 293 transitions, 4587 flow. Second operand has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:31,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:31,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:31,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:04:37,639 INFO L124 PetriNetUnfolderBase]: 12573/27639 cut-off events. [2024-11-20 22:04:37,639 INFO L125 PetriNetUnfolderBase]: For 495275/497207 co-relation queries the response was YES. [2024-11-20 22:04:37,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113608 conditions, 27639 events. 12573/27639 cut-off events. For 495275/497207 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 200320 event pairs, 1073 based on Foata normal form. 1693/29284 useless extension candidates. Maximal degree in co-relation 113556. Up to 5161 conditions per place. [2024-11-20 22:04:37,984 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 427 selfloop transitions, 909 changer transitions 11/1358 dead transitions. [2024-11-20 22:04:37,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1358 transitions, 19130 flow [2024-11-20 22:04:37,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-20 22:04:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-11-20 22:04:37,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 1062 transitions. [2024-11-20 22:04:37,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6772959183673469 [2024-11-20 22:04:37,987 INFO L175 Difference]: Start difference. First operand has 126 places, 293 transitions, 4587 flow. Second operand 49 states and 1062 transitions. [2024-11-20 22:04:37,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1358 transitions, 19130 flow [2024-11-20 22:04:38,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 1358 transitions, 17265 flow, removed 901 selfloop flow, removed 5 redundant places. [2024-11-20 22:04:38,241 INFO L231 Difference]: Finished difference. Result has 214 places, 959 transitions, 16522 flow [2024-11-20 22:04:38,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=4318, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=16522, PETRI_PLACES=214, PETRI_TRANSITIONS=959} [2024-11-20 22:04:38,242 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 180 predicate places. [2024-11-20 22:04:38,242 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 959 transitions, 16522 flow [2024-11-20 22:04:38,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 13.040816326530612) internal successors, (639), 49 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:38,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:04:38,243 INFO L204 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2024-11-20 22:04:38,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-20 22:04:38,443 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,SelfDestructingSolverStorable17 [2024-11-20 22:04:38,444 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:04:38,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:04:38,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1425992527, now seen corresponding path program 4 times [2024-11-20 22:04:38,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:04:38,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994752395] [2024-11-20 22:04:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:04:38,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:04:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:04:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:39,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:04:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994752395] [2024-11-20 22:04:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994752395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:04:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687165733] [2024-11-20 22:04:39,949 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-20 22:04:39,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:04:39,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:04:39,950 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) [2024-11-20 22:04:39,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 22:04:40,031 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-20 22:04:40,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:04:40,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-20 22:04:40,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:04:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:40,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:04:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:04:42,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687165733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:04:42,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:04:42,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2024-11-20 22:04:42,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328342895] [2024-11-20 22:04:42,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:04:42,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-20 22:04:42,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:04:42,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-20 22:04:42,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-20 22:04:42,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:04:42,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 959 transitions, 16522 flow. Second operand has 97 states, 97 states have (on average 13.02061855670103) internal successors, (1263), 97 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:04:42,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:04:42,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:04:42,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 22:05:15,954 INFO L124 PetriNetUnfolderBase]: 40364/87498 cut-off events. [2024-11-20 22:05:15,954 INFO L125 PetriNetUnfolderBase]: For 3656781/3663433 co-relation queries the response was YES. [2024-11-20 22:05:18,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369742 conditions, 87498 events. 40364/87498 cut-off events. For 3656781/3663433 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 704822 event pairs, 4203 based on Foata normal form. 6204/93643 useless extension candidates. Maximal degree in co-relation 369648. Up to 16674 conditions per place. [2024-11-20 22:05:18,447 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 813 selfloop transitions, 3397 changer transitions 11/4232 dead transitions. [2024-11-20 22:05:18,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 4232 transitions, 66489 flow [2024-11-20 22:05:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-20 22:05:18,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2024-11-20 22:05:18,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 2118 transitions. [2024-11-20 22:05:18,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6823453608247423 [2024-11-20 22:05:18,453 INFO L175 Difference]: Start difference. First operand has 214 places, 959 transitions, 16522 flow. Second operand 97 states and 2118 transitions. [2024-11-20 22:05:18,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 4232 transitions, 66489 flow [2024-11-20 22:05:20,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 4232 transitions, 59643 flow, removed 3247 selfloop flow, removed 11 redundant places. [2024-11-20 22:05:20,095 INFO L231 Difference]: Finished difference. Result has 392 places, 3449 transitions, 61513 flow [2024-11-20 22:05:20,096 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=15760, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=919, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=61513, PETRI_PLACES=392, PETRI_TRANSITIONS=3449} [2024-11-20 22:05:20,097 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 358 predicate places. [2024-11-20 22:05:20,097 INFO L471 AbstractCegarLoop]: Abstraction has has 392 places, 3449 transitions, 61513 flow [2024-11-20 22:05:20,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 13.02061855670103) internal successors, (1263), 97 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:05:20,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 22:05:20,098 INFO L204 CegarLoopForPetriNet]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2024-11-20 22:05:20,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-20 22:05:20,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:20,298 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-20 22:05:20,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:05:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1977574065, now seen corresponding path program 5 times [2024-11-20 22:05:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:05:20,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733536765] [2024-11-20 22:05:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:05:20,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:05:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:05:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:25,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:05:25,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733536765] [2024-11-20 22:05:25,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733536765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:05:25,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595282021] [2024-11-20 22:05:25,293 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-20 22:05:25,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:05:25,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:05:25,294 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) [2024-11-20 22:05:25,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 22:05:25,582 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-20 22:05:25,582 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:05:25,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 1083 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-20 22:05:25,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:05:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:26,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:05:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:05:33,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595282021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:05:33,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:05:33,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 191 [2024-11-20 22:05:33,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348840692] [2024-11-20 22:05:33,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:05:33,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-20 22:05:33,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:05:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-20 22:05:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-20 22:05:33,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-11-20 22:05:33,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 3449 transitions, 61513 flow. Second operand has 193 states, 193 states have (on average 13.010362694300518) internal successors, (2511), 193 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:05:33,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 22:05:33,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-11-20 22:05:33,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand