./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-misc-3.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 b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:53:14,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:53:14,086 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:53:14,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:53:14,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:53:14,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:53:14,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:53:14,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:53:14,107 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:53:14,107 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:53:14,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:53:14,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:53:14,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:53:14,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:53:14,108 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:53:14,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:53:14,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:53:14,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:53:14,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:53:14,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:53:14,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:53:14,111 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:53:14,111 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:53:14,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:53:14,112 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:53:14,112 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:53:14,112 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:53:14,112 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:53:14,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:53:14,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:53:14,113 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:53:14,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:53:14,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:53:14,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:53:14,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:53:14,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:53:14,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:53:14,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:53:14,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:53:14,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:53:14,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:53:14,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:53:14,115 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:53:14,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:53:14,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2ed7b18db6948b1f53058568aeeb46b9da6de135bdadf46ddc91e86240dfa66 [2024-11-17 07:53:14,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:53:14,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:53:14,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:53:14,308 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:53:14,309 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:53:14,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-17 07:53:15,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:53:15,654 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:53:15,655 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2024-11-17 07:53:15,661 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01dbdcdb4/cdd33f4c227a4430805f2f2d1456b99a/FLAGfdb3e21d9 [2024-11-17 07:53:16,076 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01dbdcdb4/cdd33f4c227a4430805f2f2d1456b99a [2024-11-17 07:53:16,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:53:16,079 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:53:16,080 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:53:16,080 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:53:16,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:53:16,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b98e9b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16, skipping insertion in model container [2024-11-17 07:53:16,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,101 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:53:16,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:53:16,274 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:53:16,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:53:16,308 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:53:16,308 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16 WrapperNode [2024-11-17 07:53:16,308 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:53:16,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:53:16,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:53:16,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:53:16,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,374 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 42 [2024-11-17 07:53:16,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:53:16,374 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:53:16,374 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:53:16,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:53:16,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,389 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,397 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]. [2024-11-17 07:53:16,398 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,398 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,401 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:53:16,405 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:53:16,405 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:53:16,405 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:53:16,405 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (1/1) ... [2024-11-17 07:53:16,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:53:16,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:16,428 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) [2024-11-17 07:53:16,429 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 [2024-11-17 07:53:16,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:53:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:53:16,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:53:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:53:16,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:53:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:53:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:53:16,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:53:16,463 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:53:16,543 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:53:16,546 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:53:16,694 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:53:16,694 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:53:16,803 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:53:16,803 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:53:16,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:53:16 BoogieIcfgContainer [2024-11-17 07:53:16,803 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:53:16,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:53:16,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:53:16,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:53:16,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:53:16" (1/3) ... [2024-11-17 07:53:16,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5123e389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:53:16, skipping insertion in model container [2024-11-17 07:53:16,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:53:16" (2/3) ... [2024-11-17 07:53:16,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5123e389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:53:16, skipping insertion in model container [2024-11-17 07:53:16,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:53:16" (3/3) ... [2024-11-17 07:53:16,813 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2024-11-17 07:53:16,826 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:53:16,826 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 07:53:16,826 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:53:16,877 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:53:16,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 98 flow [2024-11-17 07:53:16,935 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-17 07:53:16,936 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:53:16,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 40 events. 6/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 115 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-17 07:53:16,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 98 flow [2024-11-17 07:53:16,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 85 flow [2024-11-17 07:53:16,949 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:53:16,956 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;@1baa1766, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:53:16,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-17 07:53:16,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:53:16,963 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-17 07:53:16,963 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:53:16,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:16,964 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:16,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:53:16,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:16,968 INFO L85 PathProgramCache]: Analyzing trace with hash 658480122, now seen corresponding path program 1 times [2024-11-17 07:53:16,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:16,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337567088] [2024-11-17 07:53:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:16,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:17,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:17,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337567088] [2024-11-17 07:53:17,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337567088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:17,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:17,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 07:53:17,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392560654] [2024-11-17 07:53:17,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:17,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 07:53:17,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:17,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 07:53:17,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 07:53:17,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-17 07:53:17,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:17,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:17,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-17 07:53:17,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:17,356 INFO L124 PetriNetUnfolderBase]: 478/808 cut-off events. [2024-11-17 07:53:17,357 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-17 07:53:17,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 808 events. 478/808 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4208 event pairs, 68 based on Foata normal form. 79/542 useless extension candidates. Maximal degree in co-relation 1416. Up to 631 conditions per place. [2024-11-17 07:53:17,363 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 27 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-11-17 07:53:17,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 171 flow [2024-11-17 07:53:17,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 07:53:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 07:53:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-17 07:53:17,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2024-11-17 07:53:17,374 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 85 flow. Second operand 3 states and 92 transitions. [2024-11-17 07:53:17,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 171 flow [2024-11-17 07:53:17,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 163 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:53:17,378 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 123 flow [2024-11-17 07:53:17,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=40} [2024-11-17 07:53:17,382 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2024-11-17 07:53:17,382 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 123 flow [2024-11-17 07:53:17,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:17,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:17,383 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:17,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:53:17,383 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:53:17,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:17,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1178364157, now seen corresponding path program 1 times [2024-11-17 07:53:17,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:17,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58997923] [2024-11-17 07:53:17,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:17,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:17,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:17,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58997923] [2024-11-17 07:53:17,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58997923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708791767] [2024-11-17 07:53:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:17,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:17,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:17,513 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) [2024-11-17 07:53:17,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:53:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:17,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:17,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:17,634 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:53:17,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708791767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:17,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:53:17,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-11-17 07:53:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586201484] [2024-11-17 07:53:17,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:17,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:53:17,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:17,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:53:17,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:53:17,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-17 07:53:17,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 40 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:17,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:17,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-17 07:53:17,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:17,808 INFO L124 PetriNetUnfolderBase]: 794/1439 cut-off events. [2024-11-17 07:53:17,808 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-11-17 07:53:17,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3269 conditions, 1439 events. 794/1439 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8079 event pairs, 81 based on Foata normal form. 0/895 useless extension candidates. Maximal degree in co-relation 2732. Up to 667 conditions per place. [2024-11-17 07:53:17,820 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 39 selfloop transitions, 19 changer transitions 0/72 dead transitions. [2024-11-17 07:53:17,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 72 transitions, 341 flow [2024-11-17 07:53:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:53:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:53:17,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-17 07:53:17,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-17 07:53:17,824 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 123 flow. Second operand 4 states and 126 transitions. [2024-11-17 07:53:17,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 72 transitions, 341 flow [2024-11-17 07:53:17,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:53:17,829 INFO L231 Difference]: Finished difference. Result has 43 places, 54 transitions, 272 flow [2024-11-17 07:53:17,830 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=43, PETRI_TRANSITIONS=54} [2024-11-17 07:53:17,830 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-11-17 07:53:17,831 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 54 transitions, 272 flow [2024-11-17 07:53:17,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:17,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:17,831 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:17,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 07:53:18,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:18,036 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:53:18,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:18,037 INFO L85 PathProgramCache]: Analyzing trace with hash -823302802, now seen corresponding path program 1 times [2024-11-17 07:53:18,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:18,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131088904] [2024-11-17 07:53:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:18,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:18,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:18,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131088904] [2024-11-17 07:53:18,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131088904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:18,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:18,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:53:18,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707870952] [2024-11-17 07:53:18,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:18,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:53:18,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:53:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:53:18,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-17 07:53:18,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 54 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-17 07:53:18,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:18,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-17 07:53:18,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:18,284 INFO L124 PetriNetUnfolderBase]: 890/1619 cut-off events. [2024-11-17 07:53:18,285 INFO L125 PetriNetUnfolderBase]: For 2580/2580 co-relation queries the response was YES. [2024-11-17 07:53:18,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4673 conditions, 1619 events. 890/1619 cut-off events. For 2580/2580 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9191 event pairs, 91 based on Foata normal form. 88/1498 useless extension candidates. Maximal degree in co-relation 3965. Up to 1146 conditions per place. [2024-11-17 07:53:18,294 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 47 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-11-17 07:53:18,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 74 transitions, 468 flow [2024-11-17 07:53:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:53:18,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:53:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-11-17 07:53:18,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2024-11-17 07:53:18,298 INFO L175 Difference]: Start difference. First operand has 43 places, 54 transitions, 272 flow. Second operand 4 states and 122 transitions. [2024-11-17 07:53:18,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 74 transitions, 468 flow [2024-11-17 07:53:18,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 74 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:53:18,303 INFO L231 Difference]: Finished difference. Result has 48 places, 62 transitions, 402 flow [2024-11-17 07:53:18,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=402, PETRI_PLACES=48, PETRI_TRANSITIONS=62} [2024-11-17 07:53:18,304 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2024-11-17 07:53:18,304 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 62 transitions, 402 flow [2024-11-17 07:53:18,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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) [2024-11-17 07:53:18,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:18,305 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:18,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:53:18,305 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:53:18,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:18,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2085484367, now seen corresponding path program 1 times [2024-11-17 07:53:18,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:18,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83849614] [2024-11-17 07:53:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:18,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:18,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:18,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83849614] [2024-11-17 07:53:18,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83849614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:18,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:18,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:53:18,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023927312] [2024-11-17 07:53:18,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:18,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:53:18,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:18,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:53:18,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:53:18,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-17 07:53:18,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 62 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-17 07:53:18,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:18,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-17 07:53:18,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:18,566 INFO L124 PetriNetUnfolderBase]: 1108/2060 cut-off events. [2024-11-17 07:53:18,567 INFO L125 PetriNetUnfolderBase]: For 6905/6905 co-relation queries the response was YES. [2024-11-17 07:53:18,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6869 conditions, 2060 events. 1108/2060 cut-off events. For 6905/6905 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12358 event pairs, 74 based on Foata normal form. 96/1895 useless extension candidates. Maximal degree in co-relation 5786. Up to 1075 conditions per place. [2024-11-17 07:53:18,583 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 61 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2024-11-17 07:53:18,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 88 transitions, 701 flow [2024-11-17 07:53:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:53:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:53:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-11-17 07:53:18,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2024-11-17 07:53:18,585 INFO L175 Difference]: Start difference. First operand has 48 places, 62 transitions, 402 flow. Second operand 4 states and 116 transitions. [2024-11-17 07:53:18,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 88 transitions, 701 flow [2024-11-17 07:53:18,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 669 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-11-17 07:53:18,591 INFO L231 Difference]: Finished difference. Result has 53 places, 70 transitions, 532 flow [2024-11-17 07:53:18,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=532, PETRI_PLACES=53, PETRI_TRANSITIONS=70} [2024-11-17 07:53:18,592 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2024-11-17 07:53:18,592 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 70 transitions, 532 flow [2024-11-17 07:53:18,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2024-11-17 07:53:18,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:18,592 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:18,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:53:18,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:53:18,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1178364156, now seen corresponding path program 1 times [2024-11-17 07:53:18,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:18,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900374000] [2024-11-17 07:53:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:18,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:18,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:18,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900374000] [2024-11-17 07:53:18,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900374000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:18,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529430045] [2024-11-17 07:53:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:18,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:18,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:18,657 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) [2024-11-17 07:53:18,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:53:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:18,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:18,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:18,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:18,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529430045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:18,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:18,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-17 07:53:18,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525026842] [2024-11-17 07:53:18,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:18,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 07:53:18,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 07:53:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:53:18,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-17 07:53:18,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 70 transitions, 532 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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) [2024-11-17 07:53:18,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:18,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-17 07:53:18,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:19,126 INFO L124 PetriNetUnfolderBase]: 2245/4363 cut-off events. [2024-11-17 07:53:19,128 INFO L125 PetriNetUnfolderBase]: For 24756/24756 co-relation queries the response was YES. [2024-11-17 07:53:19,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15176 conditions, 4363 events. 2245/4363 cut-off events. For 24756/24756 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 29287 event pairs, 94 based on Foata normal form. 384/4225 useless extension candidates. Maximal degree in co-relation 13007. Up to 1671 conditions per place. [2024-11-17 07:53:19,157 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 103 selfloop transitions, 49 changer transitions 0/166 dead transitions. [2024-11-17 07:53:19,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 166 transitions, 1523 flow [2024-11-17 07:53:19,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 07:53:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 07:53:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-11-17 07:53:19,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2024-11-17 07:53:19,160 INFO L175 Difference]: Start difference. First operand has 53 places, 70 transitions, 532 flow. Second operand 7 states and 224 transitions. [2024-11-17 07:53:19,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 166 transitions, 1523 flow [2024-11-17 07:53:19,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 166 transitions, 1510 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-17 07:53:19,177 INFO L231 Difference]: Finished difference. Result has 62 places, 110 transitions, 1270 flow [2024-11-17 07:53:19,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1270, PETRI_PLACES=62, PETRI_TRANSITIONS=110} [2024-11-17 07:53:19,178 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 23 predicate places. [2024-11-17 07:53:19,179 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 110 transitions, 1270 flow [2024-11-17 07:53:19,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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) [2024-11-17 07:53:19,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:19,180 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:19,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:53:19,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:19,384 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:53:19,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:19,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1039380924, now seen corresponding path program 1 times [2024-11-17 07:53:19,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:19,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089001202] [2024-11-17 07:53:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:19,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:19,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:19,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:19,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089001202] [2024-11-17 07:53:19,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089001202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:19,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851120562] [2024-11-17 07:53:19,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:19,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:19,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:19,433 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) [2024-11-17 07:53:19,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:53:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:19,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:19,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:19,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:19,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851120562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:19,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:19,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-11-17 07:53:19,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559129286] [2024-11-17 07:53:19,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:19,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 07:53:19,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:19,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 07:53:19,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-17 07:53:19,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-17 07:53:19,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 110 transitions, 1270 flow. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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) [2024-11-17 07:53:19,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:19,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-17 07:53:19,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:19,906 INFO L124 PetriNetUnfolderBase]: 2572/5191 cut-off events. [2024-11-17 07:53:19,906 INFO L125 PetriNetUnfolderBase]: For 55428/55428 co-relation queries the response was YES. [2024-11-17 07:53:19,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19834 conditions, 5191 events. 2572/5191 cut-off events. For 55428/55428 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 37435 event pairs, 134 based on Foata normal form. 524/5092 useless extension candidates. Maximal degree in co-relation 16946. Up to 1803 conditions per place. [2024-11-17 07:53:19,937 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 91 selfloop transitions, 47 changer transitions 0/152 dead transitions. [2024-11-17 07:53:19,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 152 transitions, 1857 flow [2024-11-17 07:53:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:53:19,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:53:19,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-11-17 07:53:19,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 07:53:19,939 INFO L175 Difference]: Start difference. First operand has 62 places, 110 transitions, 1270 flow. Second operand 6 states and 168 transitions. [2024-11-17 07:53:19,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 152 transitions, 1857 flow [2024-11-17 07:53:19,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 152 transitions, 1736 flow, removed 58 selfloop flow, removed 1 redundant places. [2024-11-17 07:53:19,962 INFO L231 Difference]: Finished difference. Result has 66 places, 122 transitions, 1565 flow [2024-11-17 07:53:19,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1565, PETRI_PLACES=66, PETRI_TRANSITIONS=122} [2024-11-17 07:53:19,963 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2024-11-17 07:53:19,963 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 122 transitions, 1565 flow [2024-11-17 07:53:19,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 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) [2024-11-17 07:53:19,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:19,963 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:19,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 07:53:20,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:20,168 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:53:20,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash -585761028, now seen corresponding path program 1 times [2024-11-17 07:53:20,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:20,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304845265] [2024-11-17 07:53:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:20,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:20,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:20,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:20,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304845265] [2024-11-17 07:53:20,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304845265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:20,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129133951] [2024-11-17 07:53:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:20,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:20,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:20,222 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) [2024-11-17 07:53:20,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:53:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:20,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:20,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:20,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:20,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129133951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:20,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:20,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2024-11-17 07:53:20,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971084797] [2024-11-17 07:53:20,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:20,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 07:53:20,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:20,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 07:53:20,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2024-11-17 07:53:20,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-17 07:53:20,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 122 transitions, 1565 flow. Second operand has 10 states, 10 states have (on average 18.3) internal successors, (183), 10 states have internal predecessors, (183), 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) [2024-11-17 07:53:20,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:20,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-17 07:53:20,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:22,595 INFO L124 PetriNetUnfolderBase]: 12565/25967 cut-off events. [2024-11-17 07:53:22,595 INFO L125 PetriNetUnfolderBase]: For 247989/247989 co-relation queries the response was YES. [2024-11-17 07:53:22,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101738 conditions, 25967 events. 12565/25967 cut-off events. For 247989/247989 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 216787 event pairs, 473 based on Foata normal form. 806/23717 useless extension candidates. Maximal degree in co-relation 89243. Up to 8116 conditions per place. [2024-11-17 07:53:22,750 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 224 selfloop transitions, 310 changer transitions 0/548 dead transitions. [2024-11-17 07:53:22,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 548 transitions, 8447 flow [2024-11-17 07:53:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:53:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:53:22,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 308 transitions. [2024-11-17 07:53:22,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-17 07:53:22,752 INFO L175 Difference]: Start difference. First operand has 66 places, 122 transitions, 1565 flow. Second operand 10 states and 308 transitions. [2024-11-17 07:53:22,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 548 transitions, 8447 flow [2024-11-17 07:53:23,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 548 transitions, 7637 flow, removed 402 selfloop flow, removed 2 redundant places. [2024-11-17 07:53:23,370 INFO L231 Difference]: Finished difference. Result has 79 places, 420 transitions, 6949 flow [2024-11-17 07:53:23,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6949, PETRI_PLACES=79, PETRI_TRANSITIONS=420} [2024-11-17 07:53:23,371 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 40 predicate places. [2024-11-17 07:53:23,371 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 420 transitions, 6949 flow [2024-11-17 07:53:23,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.3) internal successors, (183), 10 states have internal predecessors, (183), 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) [2024-11-17 07:53:23,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:23,371 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:23,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 07:53:23,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:23,573 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:53:23,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:23,573 INFO L85 PathProgramCache]: Analyzing trace with hash 367329281, now seen corresponding path program 1 times [2024-11-17 07:53:23,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:23,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028185338] [2024-11-17 07:53:23,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:23,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:23,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:23,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028185338] [2024-11-17 07:53:23,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028185338] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:23,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021164254] [2024-11-17 07:53:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:23,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:23,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:23,627 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) [2024-11-17 07:53:23,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:53:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:23,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:23,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:23,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:23,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021164254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:23,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:23,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-17 07:53:23,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065978639] [2024-11-17 07:53:23,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:23,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 07:53:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:23,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 07:53:23,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:53:23,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-17 07:53:23,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 420 transitions, 6949 flow. Second operand has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 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) [2024-11-17 07:53:23,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:23,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-17 07:53:23,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:30,059 INFO L124 PetriNetUnfolderBase]: 28623/61687 cut-off events. [2024-11-17 07:53:30,059 INFO L125 PetriNetUnfolderBase]: For 859737/859737 co-relation queries the response was YES. [2024-11-17 07:53:30,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241057 conditions, 61687 events. 28623/61687 cut-off events. For 859737/859737 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 617425 event pairs, 1027 based on Foata normal form. 5856/59573 useless extension candidates. Maximal degree in co-relation 214486. Up to 13599 conditions per place. [2024-11-17 07:53:30,789 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 479 selfloop transitions, 553 changer transitions 0/1046 dead transitions. [2024-11-17 07:53:30,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 1046 transitions, 18645 flow [2024-11-17 07:53:30,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 07:53:30,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 07:53:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 282 transitions. [2024-11-17 07:53:30,792 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2024-11-17 07:53:30,792 INFO L175 Difference]: Start difference. First operand has 79 places, 420 transitions, 6949 flow. Second operand 9 states and 282 transitions. [2024-11-17 07:53:30,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 1046 transitions, 18645 flow [2024-11-17 07:53:32,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 1046 transitions, 17754 flow, removed 298 selfloop flow, removed 3 redundant places. [2024-11-17 07:53:32,490 INFO L231 Difference]: Finished difference. Result has 90 places, 860 transitions, 16949 flow [2024-11-17 07:53:32,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6540, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16949, PETRI_PLACES=90, PETRI_TRANSITIONS=860} [2024-11-17 07:53:32,492 INFO L277 CegarLoopForPetriNet]: 39 programPoint places, 51 predicate places. [2024-11-17 07:53:32,492 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 860 transitions, 16949 flow [2024-11-17 07:53:32,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 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) [2024-11-17 07:53:32,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:32,492 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:32,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 07:53:32,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:32,693 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2024-11-17 07:53:32,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:32,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1883747149, now seen corresponding path program 1 times [2024-11-17 07:53:32,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:32,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012626486] [2024-11-17 07:53:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:32,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:32,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012626486] [2024-11-17 07:53:32,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012626486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:32,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435790866] [2024-11-17 07:53:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:32,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:32,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:32,784 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) [2024-11-17 07:53:32,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:53:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:32,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:53:32,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:32,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:32,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435790866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:32,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:32,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:53:32,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908613507] [2024-11-17 07:53:32,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:32,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 07:53:32,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:32,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 07:53:32,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-17 07:53:32,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-11-17 07:53:32,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 860 transitions, 16949 flow. Second operand has 13 states, 13 states have (on average 18.23076923076923) internal successors, (237), 13 states have internal predecessors, (237), 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) [2024-11-17 07:53:32,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:32,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-11-17 07:53:32,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:03,608 INFO L124 PetriNetUnfolderBase]: 88085/192390 cut-off events. [2024-11-17 07:54:03,608 INFO L125 PetriNetUnfolderBase]: For 3090076/3090076 co-relation queries the response was YES. [2024-11-17 07:54:04,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 826267 conditions, 192390 events. 88085/192390 cut-off events. For 3090076/3090076 co-relation queries the response was YES. Maximal size of possible extension queue 3351. Compared 2290209 event pairs, 3841 based on Foata normal form. 9090/176705 useless extension candidates. Maximal degree in co-relation 765813. Up to 37190 conditions per place. [2024-11-17 07:54:05,242 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 1147 selfloop transitions, 2196 changer transitions 0/3357 dead transitions. [2024-11-17 07:54:05,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 3357 transitions, 72616 flow [2024-11-17 07:54:05,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 07:54:05,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 07:54:05,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 418 transitions. [2024-11-17 07:54:05,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7655677655677655 [2024-11-17 07:54:05,244 INFO L175 Difference]: Start difference. First operand has 90 places, 860 transitions, 16949 flow. Second operand 13 states and 418 transitions. [2024-11-17 07:54:05,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 3357 transitions, 72616 flow