./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-trans.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 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:38:20,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:38:20,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 23:38:21,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:38:21,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:38:21,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:38:21,031 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:38:21,032 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:38:21,033 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:38:21,034 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:38:21,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 23:38:21,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 23:38:21,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:38:21,036 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:38:21,037 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:38:21,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:38:21,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 23:38:21,038 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 23:38:21,038 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:38:21,038 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 23:38:21,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:38:21,042 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 23:38:21,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 23:38:21,043 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 23:38:21,043 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:38:21,043 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 23:38:21,044 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:38:21,044 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 23:38:21,044 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:38:21,044 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:38:21,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:38:21,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:38:21,045 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 23:38:21,045 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 23:38:21,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:38:21,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:38:21,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 23:38:21,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 23:38:21,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:38:21,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 23:38:21,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 23:38:21,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 23:38:21,049 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 23:38:21,050 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 23:38:21,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58a3707e98508adde0e15b9d8e43fa1e77573e5478a67cbc9ef6d2cbcb9307e7 [2024-10-24 23:38:21,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:38:21,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:38:21,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:38:21,335 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:38:21,335 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:38:21,336 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2024-10-24 23:38:22,800 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:38:23,015 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:38:23,015 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-match-trans.wvr.c [2024-10-24 23:38:23,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475ddd204/1819565812424049af738f58a8118bac/FLAGd3ab1763f [2024-10-24 23:38:23,391 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/475ddd204/1819565812424049af738f58a8118bac [2024-10-24 23:38:23,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:38:23,395 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:38:23,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:38:23,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:38:23,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:38:23,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b79f860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23, skipping insertion in model container [2024-10-24 23:38:23,403 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,427 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:38:23,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:38:23,655 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:38:23,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:38:23,697 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:38:23,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23 WrapperNode [2024-10-24 23:38:23,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:38:23,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:38:23,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:38:23,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:38:23,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,750 INFO L138 Inliner]: procedures = 22, calls = 19, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 281 [2024-10-24 23:38:23,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:38:23,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:38:23,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:38:23,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:38:23,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,767 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,784 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-24 23:38:23,784 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:38:23,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:38:23,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:38:23,804 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:38:23,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (1/1) ... [2024-10-24 23:38:23,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 23:38:23,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:38:23,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 23:38:23,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 23:38:23,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 23:38:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 23:38:23,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 23:38:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 23:38:23,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 23:38:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 23:38:23,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 23:38:23,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 23:38:23,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:38:23,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:38:23,897 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 23:38:24,051 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:38:24,056 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:38:24,613 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 23:38:24,613 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:38:24,971 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:38:24,972 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 23:38:24,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:38:24 BoogieIcfgContainer [2024-10-24 23:38:24,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:38:24,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 23:38:24,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 23:38:24,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 23:38:24,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:38:23" (1/3) ... [2024-10-24 23:38:24,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c4f2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:38:24, skipping insertion in model container [2024-10-24 23:38:24,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:38:23" (2/3) ... [2024-10-24 23:38:24,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c4f2c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:38:24, skipping insertion in model container [2024-10-24 23:38:24,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:38:24" (3/3) ... [2024-10-24 23:38:24,983 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2024-10-24 23:38:25,004 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 23:38:25,005 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-10-24 23:38:25,006 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 23:38:25,092 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 23:38:25,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 125 transitions, 271 flow [2024-10-24 23:38:25,195 INFO L124 PetriNetUnfolderBase]: 12/122 cut-off events. [2024-10-24 23:38:25,197 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 23:38:25,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 12/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 495 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2024-10-24 23:38:25,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 125 transitions, 271 flow [2024-10-24 23:38:25,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 120 transitions, 255 flow [2024-10-24 23:38:25,224 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 23:38:25,232 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;@5e08554f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 23:38:25,232 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-10-24 23:38:25,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 23:38:25,241 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-10-24 23:38:25,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 23:38:25,241 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:25,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 23:38:25,243 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-24 23:38:25,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:25,249 INFO L85 PathProgramCache]: Analyzing trace with hash 823388519, now seen corresponding path program 1 times [2024-10-24 23:38:25,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:25,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877464257] [2024-10-24 23:38:25,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:25,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:38:25,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877464257] [2024-10-24 23:38:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877464257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:38:25,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:38:25,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:38:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288205619] [2024-10-24 23:38:25,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:38:25,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:38:25,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:25,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:38:25,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:38:25,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-10-24 23:38:25,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 120 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:25,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:25,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-10-24 23:38:25,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:29,866 INFO L124 PetriNetUnfolderBase]: 23220/40491 cut-off events. [2024-10-24 23:38:29,868 INFO L125 PetriNetUnfolderBase]: For 611/611 co-relation queries the response was YES. [2024-10-24 23:38:29,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71977 conditions, 40491 events. 23220/40491 cut-off events. For 611/611 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 365678 event pairs, 5655 based on Foata normal form. 1256/36389 useless extension candidates. Maximal degree in co-relation 70832. Up to 15195 conditions per place. [2024-10-24 23:38:30,270 INFO L140 encePairwiseOnDemand]: 110/125 looper letters, 104 selfloop transitions, 10 changer transitions 0/180 dead transitions. [2024-10-24 23:38:30,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 180 transitions, 615 flow [2024-10-24 23:38:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:38:30,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:38:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 396 transitions. [2024-10-24 23:38:30,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.792 [2024-10-24 23:38:30,291 INFO L175 Difference]: Start difference. First operand has 118 places, 120 transitions, 255 flow. Second operand 4 states and 396 transitions. [2024-10-24 23:38:30,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 180 transitions, 615 flow [2024-10-24 23:38:30,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 180 transitions, 600 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 23:38:30,323 INFO L231 Difference]: Finished difference. Result has 117 places, 124 transitions, 312 flow [2024-10-24 23:38:30,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=117, PETRI_TRANSITIONS=124} [2024-10-24 23:38:30,332 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2024-10-24 23:38:30,453 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 124 transitions, 312 flow [2024-10-24 23:38:30,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:30,454 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:30,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 23:38:30,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 23:38:30,455 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-24 23:38:30,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:30,455 INFO L85 PathProgramCache]: Analyzing trace with hash -244758723, now seen corresponding path program 1 times [2024-10-24 23:38:30,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:30,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643365620] [2024-10-24 23:38:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:30,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:38:30,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:30,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643365620] [2024-10-24 23:38:30,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643365620] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:38:30,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:38:30,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:38:30,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116347932] [2024-10-24 23:38:30,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:38:30,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:38:30,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:30,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:38:30,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:38:30,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 125 [2024-10-24 23:38:30,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 124 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:30,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:30,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 125 [2024-10-24 23:38:30,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:33,488 INFO L124 PetriNetUnfolderBase]: 16328/32348 cut-off events. [2024-10-24 23:38:33,488 INFO L125 PetriNetUnfolderBase]: For 6721/7168 co-relation queries the response was YES. [2024-10-24 23:38:33,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59836 conditions, 32348 events. 16328/32348 cut-off events. For 6721/7168 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 320234 event pairs, 7164 based on Foata normal form. 447/28186 useless extension candidates. Maximal degree in co-relation 40982. Up to 11223 conditions per place. [2024-10-24 23:38:33,723 INFO L140 encePairwiseOnDemand]: 118/125 looper letters, 71 selfloop transitions, 7 changer transitions 0/152 dead transitions. [2024-10-24 23:38:33,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 152 transitions, 529 flow [2024-10-24 23:38:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:38:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:38:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2024-10-24 23:38:33,727 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-24 23:38:33,727 INFO L175 Difference]: Start difference. First operand has 117 places, 124 transitions, 312 flow. Second operand 4 states and 375 transitions. [2024-10-24 23:38:33,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 152 transitions, 529 flow [2024-10-24 23:38:33,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 152 transitions, 529 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:38:33,747 INFO L231 Difference]: Finished difference. Result has 120 places, 124 transitions, 336 flow [2024-10-24 23:38:33,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=120, PETRI_TRANSITIONS=124} [2024-10-24 23:38:33,749 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2024-10-24 23:38:33,749 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 124 transitions, 336 flow [2024-10-24 23:38:33,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:33,749 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:33,750 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:38:33,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 23:38:33,750 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-24 23:38:33,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:33,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1002383371, now seen corresponding path program 1 times [2024-10-24 23:38:33,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:33,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514867649] [2024-10-24 23:38:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:33,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:38:33,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:33,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514867649] [2024-10-24 23:38:33,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514867649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:38:33,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:38:33,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:38:33,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469158180] [2024-10-24 23:38:33,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:38:33,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:38:33,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:33,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:38:33,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:38:33,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 125 [2024-10-24 23:38:33,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 124 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:33,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:33,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 125 [2024-10-24 23:38:33,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:36,394 INFO L124 PetriNetUnfolderBase]: 17549/33901 cut-off events. [2024-10-24 23:38:36,394 INFO L125 PetriNetUnfolderBase]: For 15579/16026 co-relation queries the response was YES. [2024-10-24 23:38:36,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66490 conditions, 33901 events. 17549/33901 cut-off events. For 15579/16026 co-relation queries the response was YES. Maximal size of possible extension queue 1371. Compared 330637 event pairs, 8032 based on Foata normal form. 685/29693 useless extension candidates. Maximal degree in co-relation 46252. Up to 12560 conditions per place. [2024-10-24 23:38:36,661 INFO L140 encePairwiseOnDemand]: 119/125 looper letters, 73 selfloop transitions, 7 changer transitions 0/150 dead transitions. [2024-10-24 23:38:36,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 150 transitions, 549 flow [2024-10-24 23:38:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:38:36,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:38:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2024-10-24 23:38:36,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.732 [2024-10-24 23:38:36,665 INFO L175 Difference]: Start difference. First operand has 120 places, 124 transitions, 336 flow. Second operand 4 states and 366 transitions. [2024-10-24 23:38:36,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 150 transitions, 549 flow [2024-10-24 23:38:36,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 150 transitions, 541 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:38:36,725 INFO L231 Difference]: Finished difference. Result has 120 places, 123 transitions, 338 flow [2024-10-24 23:38:36,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=120, PETRI_TRANSITIONS=123} [2024-10-24 23:38:36,727 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 2 predicate places. [2024-10-24 23:38:36,727 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 123 transitions, 338 flow [2024-10-24 23:38:36,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:36,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:36,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:38:36,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 23:38:36,728 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-24 23:38:36,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash 937383314, now seen corresponding path program 1 times [2024-10-24 23:38:36,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:36,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265165199] [2024-10-24 23:38:36,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:36,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:38:36,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:36,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265165199] [2024-10-24 23:38:36,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265165199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:38:36,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:38:36,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:38:36,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203833642] [2024-10-24 23:38:36,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:38:36,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:38:36,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:36,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:38:36,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:38:36,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-10-24 23:38:36,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 123 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:36,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:36,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-10-24 23:38:36,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:41,135 INFO L124 PetriNetUnfolderBase]: 34240/59048 cut-off events. [2024-10-24 23:38:41,136 INFO L125 PetriNetUnfolderBase]: For 33562/35459 co-relation queries the response was YES. [2024-10-24 23:38:41,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123730 conditions, 59048 events. 34240/59048 cut-off events. For 33562/35459 co-relation queries the response was YES. Maximal size of possible extension queue 2160. Compared 559488 event pairs, 8670 based on Foata normal form. 3082/53443 useless extension candidates. Maximal degree in co-relation 63394. Up to 21800 conditions per place. [2024-10-24 23:38:41,577 INFO L140 encePairwiseOnDemand]: 110/125 looper letters, 117 selfloop transitions, 10 changer transitions 0/191 dead transitions. [2024-10-24 23:38:41,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 191 transitions, 842 flow [2024-10-24 23:38:41,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:38:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:38:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 394 transitions. [2024-10-24 23:38:41,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.788 [2024-10-24 23:38:41,579 INFO L175 Difference]: Start difference. First operand has 120 places, 123 transitions, 338 flow. Second operand 4 states and 394 transitions. [2024-10-24 23:38:41,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 191 transitions, 842 flow [2024-10-24 23:38:41,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 191 transitions, 816 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 23:38:41,832 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 390 flow [2024-10-24 23:38:41,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=390, PETRI_PLACES=121, PETRI_TRANSITIONS=127} [2024-10-24 23:38:41,834 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 3 predicate places. [2024-10-24 23:38:41,834 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 390 flow [2024-10-24 23:38:41,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.75) internal successors, (283), 4 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:41,835 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:41,835 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:38:41,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 23:38:41,835 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-24 23:38:41,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:41,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1005887337, now seen corresponding path program 1 times [2024-10-24 23:38:41,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:41,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64921283] [2024-10-24 23:38:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:41,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:38:42,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:42,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64921283] [2024-10-24 23:38:42,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64921283] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:38:42,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:38:42,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 23:38:42,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870162709] [2024-10-24 23:38:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:38:42,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:38:42,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:38:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:38:42,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 125 [2024-10-24 23:38:42,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:42,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:42,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 125 [2024-10-24 23:38:42,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:45,547 INFO L124 PetriNetUnfolderBase]: 25254/48639 cut-off events. [2024-10-24 23:38:45,547 INFO L125 PetriNetUnfolderBase]: For 29942/31767 co-relation queries the response was YES. [2024-10-24 23:38:45,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105193 conditions, 48639 events. 25254/48639 cut-off events. For 29942/31767 co-relation queries the response was YES. Maximal size of possible extension queue 1843. Compared 499734 event pairs, 8236 based on Foata normal form. 1356/43639 useless extension candidates. Maximal degree in co-relation 39390. Up to 18012 conditions per place. [2024-10-24 23:38:45,953 INFO L140 encePairwiseOnDemand]: 118/125 looper letters, 80 selfloop transitions, 7 changer transitions 0/159 dead transitions. [2024-10-24 23:38:45,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 159 transitions, 681 flow [2024-10-24 23:38:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:38:45,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:38:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2024-10-24 23:38:45,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.748 [2024-10-24 23:38:45,955 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 390 flow. Second operand 4 states and 374 transitions. [2024-10-24 23:38:45,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 159 transitions, 681 flow [2024-10-24 23:38:46,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 159 transitions, 681 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 23:38:46,666 INFO L231 Difference]: Finished difference. Result has 124 places, 127 transitions, 414 flow [2024-10-24 23:38:46,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=414, PETRI_PLACES=124, PETRI_TRANSITIONS=127} [2024-10-24 23:38:46,667 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2024-10-24 23:38:46,668 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 127 transitions, 414 flow [2024-10-24 23:38:46,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:46,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:46,668 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:38:46,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 23:38:46,669 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-24 23:38:46,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1009113375, now seen corresponding path program 1 times [2024-10-24 23:38:46,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:46,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805726464] [2024-10-24 23:38:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:46,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:38:46,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805726464] [2024-10-24 23:38:46,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805726464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:38:46,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:38:46,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:38:46,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244274745] [2024-10-24 23:38:46,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:38:46,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 23:38:46,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:46,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 23:38:46,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 23:38:46,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 125 [2024-10-24 23:38:46,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 127 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:46,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:46,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 125 [2024-10-24 23:38:46,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:52,201 INFO L124 PetriNetUnfolderBase]: 42565/68369 cut-off events. [2024-10-24 23:38:52,201 INFO L125 PetriNetUnfolderBase]: For 50412/53717 co-relation queries the response was YES. [2024-10-24 23:38:52,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164330 conditions, 68369 events. 42565/68369 cut-off events. For 50412/53717 co-relation queries the response was YES. Maximal size of possible extension queue 2359. Compared 604660 event pairs, 10085 based on Foata normal form. 1652/65512 useless extension candidates. Maximal degree in co-relation 65903. Up to 29582 conditions per place. [2024-10-24 23:38:53,024 INFO L140 encePairwiseOnDemand]: 114/125 looper letters, 115 selfloop transitions, 12 changer transitions 0/192 dead transitions. [2024-10-24 23:38:53,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 192 transitions, 910 flow [2024-10-24 23:38:53,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 23:38:53,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 23:38:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 466 transitions. [2024-10-24 23:38:53,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7456 [2024-10-24 23:38:53,026 INFO L175 Difference]: Start difference. First operand has 124 places, 127 transitions, 414 flow. Second operand 5 states and 466 transitions. [2024-10-24 23:38:53,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 192 transitions, 910 flow [2024-10-24 23:38:53,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 192 transitions, 892 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:38:53,862 INFO L231 Difference]: Finished difference. Result has 127 places, 127 transitions, 452 flow [2024-10-24 23:38:53,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=127, PETRI_TRANSITIONS=127} [2024-10-24 23:38:53,863 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 9 predicate places. [2024-10-24 23:38:53,863 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 127 transitions, 452 flow [2024-10-24 23:38:53,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:53,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:53,864 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:38:53,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 23:38:53,864 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-24 23:38:53,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:53,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1009114400, now seen corresponding path program 1 times [2024-10-24 23:38:53,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:53,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593618834] [2024-10-24 23:38:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:53,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:38:53,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:53,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593618834] [2024-10-24 23:38:53,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593618834] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:38:53,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:38:53,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:38:53,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885760125] [2024-10-24 23:38:53,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:38:53,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:38:53,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:53,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:38:53,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:38:53,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-10-24 23:38:53,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 127 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:53,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:53,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-10-24 23:38:53,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:38:58,342 INFO L124 PetriNetUnfolderBase]: 31281/56468 cut-off events. [2024-10-24 23:38:58,342 INFO L125 PetriNetUnfolderBase]: For 60042/62434 co-relation queries the response was YES. [2024-10-24 23:38:58,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138389 conditions, 56468 events. 31281/56468 cut-off events. For 60042/62434 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 557311 event pairs, 9365 based on Foata normal form. 2074/53345 useless extension candidates. Maximal degree in co-relation 52939. Up to 17009 conditions per place. [2024-10-24 23:38:59,000 INFO L140 encePairwiseOnDemand]: 116/125 looper letters, 117 selfloop transitions, 9 changer transitions 0/191 dead transitions. [2024-10-24 23:38:59,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 191 transitions, 926 flow [2024-10-24 23:38:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 23:38:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 23:38:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2024-10-24 23:38:59,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.776 [2024-10-24 23:38:59,002 INFO L175 Difference]: Start difference. First operand has 127 places, 127 transitions, 452 flow. Second operand 4 states and 388 transitions. [2024-10-24 23:38:59,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 191 transitions, 926 flow [2024-10-24 23:38:59,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 191 transitions, 916 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 23:38:59,821 INFO L231 Difference]: Finished difference. Result has 128 places, 125 transitions, 448 flow [2024-10-24 23:38:59,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=448, PETRI_PLACES=128, PETRI_TRANSITIONS=125} [2024-10-24 23:38:59,822 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 10 predicate places. [2024-10-24 23:38:59,822 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 125 transitions, 448 flow [2024-10-24 23:38:59,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:59,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:38:59,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:38:59,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 23:38:59,823 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-24 23:38:59,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:38:59,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1217744526, now seen corresponding path program 1 times [2024-10-24 23:38:59,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:38:59,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289882976] [2024-10-24 23:38:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:38:59,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:38:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:38:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:38:59,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:38:59,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289882976] [2024-10-24 23:38:59,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289882976] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:38:59,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:38:59,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 23:38:59,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484029146] [2024-10-24 23:38:59,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:38:59,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 23:38:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:38:59,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:38:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:38:59,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 125 [2024-10-24 23:38:59,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 125 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:38:59,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:38:59,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 125 [2024-10-24 23:38:59,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 23:39:05,602 INFO L124 PetriNetUnfolderBase]: 43377/69475 cut-off events. [2024-10-24 23:39:05,603 INFO L125 PetriNetUnfolderBase]: For 73631/77130 co-relation queries the response was YES. [2024-10-24 23:39:05,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173696 conditions, 69475 events. 43377/69475 cut-off events. For 73631/77130 co-relation queries the response was YES. Maximal size of possible extension queue 2493. Compared 615203 event pairs, 12433 based on Foata normal form. 3521/68006 useless extension candidates. Maximal degree in co-relation 66041. Up to 23272 conditions per place. [2024-10-24 23:39:06,164 INFO L140 encePairwiseOnDemand]: 112/125 looper letters, 212 selfloop transitions, 13 changer transitions 0/287 dead transitions. [2024-10-24 23:39:06,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 287 transitions, 1479 flow [2024-10-24 23:39:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 23:39:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 23:39:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 713 transitions. [2024-10-24 23:39:06,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.713 [2024-10-24 23:39:06,166 INFO L175 Difference]: Start difference. First operand has 128 places, 125 transitions, 448 flow. Second operand 8 states and 713 transitions. [2024-10-24 23:39:06,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 287 transitions, 1479 flow [2024-10-24 23:39:06,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 287 transitions, 1472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 23:39:06,836 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 498 flow [2024-10-24 23:39:06,836 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=498, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2024-10-24 23:39:06,837 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 19 predicate places. [2024-10-24 23:39:06,837 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 498 flow [2024-10-24 23:39:06,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.16666666666667) internal successors, (397), 6 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:06,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 23:39:06,838 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:39:06,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 23:39:06,838 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-10-24 23:39:06,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:39:06,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1174574678, now seen corresponding path program 1 times [2024-10-24 23:39:06,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:39:06,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034800386] [2024-10-24 23:39:06,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:39:06,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:39:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:39:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:39:06,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:39:06,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034800386] [2024-10-24 23:39:06,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034800386] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:39:06,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:39:06,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 23:39:06,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910971447] [2024-10-24 23:39:06,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:39:06,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 23:39:06,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:39:06,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 23:39:06,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 23:39:06,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 125 [2024-10-24 23:39:06,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 23:39:06,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 23:39:06,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 125 [2024-10-24 23:39:06,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand