./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-symm.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/chl-simpl-str-symm.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 86978482104e316c202a01b019909b1a7fe566ade6200bbc4193c078d7c086e9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:52:16,854 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:52:16,935 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:52:16,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:52:16,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:52:16,972 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:52:16,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:52:16,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:52:16,974 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:52:16,975 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:52:16,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:52:16,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:52:16,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:52:16,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:52:16,979 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:52:16,979 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:52:16,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:52:16,980 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:52:16,980 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:52:16,980 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:52:16,980 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:52:16,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:52:16,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:52:16,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:52:16,985 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:52:16,986 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:52:16,986 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:52:16,986 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:52:16,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:52:16,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:52:16,987 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:52:16,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:52:16,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:52:16,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:52:16,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:52:16,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:52:16,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:52:16,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:52:16,990 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:52:16,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:52:16,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:52:16,992 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:52:16,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:52:16,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:52:16,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86978482104e316c202a01b019909b1a7fe566ade6200bbc4193c078d7c086e9 [2024-11-17 07:52:17,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:52:17,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:52:17,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:52:17,264 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:52:17,266 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:52:17,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2024-11-17 07:52:18,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:52:18,978 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:52:18,978 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2024-11-17 07:52:18,987 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958d31fda/168d7a1ce8dc463299ff28e44a9333f8/FLAG135c37cc9 [2024-11-17 07:52:19,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/958d31fda/168d7a1ce8dc463299ff28e44a9333f8 [2024-11-17 07:52:19,358 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:52:19,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:52:19,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:52:19,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:52:19,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:52:19,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15fe4e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19, skipping insertion in model container [2024-11-17 07:52:19,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,391 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:52:19,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:52:19,696 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:52:19,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:52:19,731 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:52:19,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19 WrapperNode [2024-11-17 07:52:19,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:52:19,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:52:19,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:52:19,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:52:19,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,763 INFO L138 Inliner]: procedures = 21, calls = 16, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 145 [2024-11-17 07:52:19,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:52:19,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:52:19,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:52:19,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:52:19,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,787 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 07:52:19,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,791 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:52:19,797 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:52:19,797 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:52:19,797 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:52:19,798 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (1/1) ... [2024-11-17 07:52:19,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:52:19,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:19,834 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 07:52:19,836 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 07:52:19,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:52:19,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:52:19,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:52:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:52:19,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:52:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:52:19,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:52:19,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:52:19,888 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 07:52:20,003 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:52:20,007 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:52:20,322 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:52:20,322 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:52:20,519 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:52:20,520 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:52:20,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:20 BoogieIcfgContainer [2024-11-17 07:52:20,520 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:52:20,522 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:52:20,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:52:20,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:52:20,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:52:19" (1/3) ... [2024-11-17 07:52:20,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1add77a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:52:20, skipping insertion in model container [2024-11-17 07:52:20,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:19" (2/3) ... [2024-11-17 07:52:20,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1add77a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:52:20, skipping insertion in model container [2024-11-17 07:52:20,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:20" (3/3) ... [2024-11-17 07:52:20,530 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2024-11-17 07:52:20,543 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:52:20,543 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-17 07:52:20,544 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:52:20,615 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:52:20,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 60 transitions, 134 flow [2024-11-17 07:52:20,676 INFO L124 PetriNetUnfolderBase]: 8/58 cut-off events. [2024-11-17 07:52:20,677 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:52:20,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 58 events. 8/58 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 191 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-11-17 07:52:20,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 60 transitions, 134 flow [2024-11-17 07:52:20,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 56 transitions, 121 flow [2024-11-17 07:52:20,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:52:20,699 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;@1df7acd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:52:20,699 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-17 07:52:20,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:52:20,706 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-11-17 07:52:20,706 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:52:20,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:20,707 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:20,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:20,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1751787560, now seen corresponding path program 1 times [2024-11-17 07:52:20,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:20,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645052227] [2024-11-17 07:52:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:20,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:20,937 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 07:52:20,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:20,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645052227] [2024-11-17 07:52:20,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645052227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:20,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:20,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285633199] [2024-11-17 07:52:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:20,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:20,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:20,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:20,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:21,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 60 [2024-11-17 07:52:21,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 07:52:21,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:21,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 60 [2024-11-17 07:52:21,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:21,387 INFO L124 PetriNetUnfolderBase]: 573/1141 cut-off events. [2024-11-17 07:52:21,387 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-17 07:52:21,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2068 conditions, 1141 events. 573/1141 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7280 event pairs, 178 based on Foata normal form. 40/937 useless extension candidates. Maximal degree in co-relation 2009. Up to 441 conditions per place. [2024-11-17 07:52:21,403 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 52 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-11-17 07:52:21,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 295 flow [2024-11-17 07:52:21,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:21,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2024-11-17 07:52:21,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2024-11-17 07:52:21,418 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 121 flow. Second operand 4 states and 172 transitions. [2024-11-17 07:52:21,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 295 flow [2024-11-17 07:52:21,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 288 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:52:21,426 INFO L231 Difference]: Finished difference. Result has 57 places, 58 transitions, 150 flow [2024-11-17 07:52:21,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=57, PETRI_TRANSITIONS=58} [2024-11-17 07:52:21,431 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-11-17 07:52:21,432 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 58 transitions, 150 flow [2024-11-17 07:52:21,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 07:52:21,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:21,433 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:21,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 07:52:21,433 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:21,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1529160882, now seen corresponding path program 1 times [2024-11-17 07:52:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:21,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908957583] [2024-11-17 07:52:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:21,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:21,547 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 07:52:21,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:21,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908957583] [2024-11-17 07:52:21,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908957583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:21,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:21,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:21,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73276766] [2024-11-17 07:52:21,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:21,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:21,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:21,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:21,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:21,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 60 [2024-11-17 07:52:21,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 07:52:21,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:21,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 60 [2024-11-17 07:52:21,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:21,766 INFO L124 PetriNetUnfolderBase]: 427/988 cut-off events. [2024-11-17 07:52:21,767 INFO L125 PetriNetUnfolderBase]: For 255/257 co-relation queries the response was YES. [2024-11-17 07:52:21,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1933 conditions, 988 events. 427/988 cut-off events. For 255/257 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6559 event pairs, 97 based on Foata normal form. 2/850 useless extension candidates. Maximal degree in co-relation 1466. Up to 395 conditions per place. [2024-11-17 07:52:21,776 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 35 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-17 07:52:21,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 252 flow [2024-11-17 07:52:21,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 162 transitions. [2024-11-17 07:52:21,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-17 07:52:21,779 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 150 flow. Second operand 4 states and 162 transitions. [2024-11-17 07:52:21,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 252 flow [2024-11-17 07:52:21,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:52:21,786 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 156 flow [2024-11-17 07:52:21,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2024-11-17 07:52:21,788 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-11-17 07:52:21,788 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 156 flow [2024-11-17 07:52:21,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 07:52:21,788 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:21,789 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:21,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 07:52:21,790 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:21,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash 159316732, now seen corresponding path program 1 times [2024-11-17 07:52:21,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:21,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884962326] [2024-11-17 07:52:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:21,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:21,866 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 07:52:21,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:21,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884962326] [2024-11-17 07:52:21,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884962326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:21,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:21,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:21,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637906431] [2024-11-17 07:52:21,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:21,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:21,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:21,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:21,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:21,889 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 60 [2024-11-17 07:52:21,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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 07:52:21,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:21,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 60 [2024-11-17 07:52:21,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:22,033 INFO L124 PetriNetUnfolderBase]: 429/972 cut-off events. [2024-11-17 07:52:22,034 INFO L125 PetriNetUnfolderBase]: For 471/473 co-relation queries the response was YES. [2024-11-17 07:52:22,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 972 events. 429/972 cut-off events. For 471/473 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6345 event pairs, 97 based on Foata normal form. 22/854 useless extension candidates. Maximal degree in co-relation 1510. Up to 415 conditions per place. [2024-11-17 07:52:22,042 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 36 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2024-11-17 07:52:22,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 258 flow [2024-11-17 07:52:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-11-17 07:52:22,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-11-17 07:52:22,044 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 156 flow. Second operand 4 states and 158 transitions. [2024-11-17 07:52:22,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 258 flow [2024-11-17 07:52:22,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 250 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:52:22,049 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 152 flow [2024-11-17 07:52:22,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-11-17 07:52:22,050 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-11-17 07:52:22,050 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 152 flow [2024-11-17 07:52:22,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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 07:52:22,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:22,050 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:22,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 07:52:22,051 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:22,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:22,051 INFO L85 PathProgramCache]: Analyzing trace with hash -449355470, now seen corresponding path program 1 times [2024-11-17 07:52:22,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:22,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705935945] [2024-11-17 07:52:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:22,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:22,138 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 07:52:22,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:22,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705935945] [2024-11-17 07:52:22,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705935945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:22,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:22,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:22,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742263282] [2024-11-17 07:52:22,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:22,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:22,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:22,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:22,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:22,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 60 [2024-11-17 07:52:22,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:22,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:22,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 60 [2024-11-17 07:52:22,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:22,332 INFO L124 PetriNetUnfolderBase]: 424/957 cut-off events. [2024-11-17 07:52:22,333 INFO L125 PetriNetUnfolderBase]: For 406/424 co-relation queries the response was YES. [2024-11-17 07:52:22,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 957 events. 424/957 cut-off events. For 406/424 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6309 event pairs, 125 based on Foata normal form. 64/840 useless extension candidates. Maximal degree in co-relation 1067. Up to 351 conditions per place. [2024-11-17 07:52:22,341 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 38 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2024-11-17 07:52:22,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 67 transitions, 281 flow [2024-11-17 07:52:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:22,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-11-17 07:52:22,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-11-17 07:52:22,345 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 152 flow. Second operand 4 states and 159 transitions. [2024-11-17 07:52:22,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 67 transitions, 281 flow [2024-11-17 07:52:22,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 267 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:52:22,350 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 146 flow [2024-11-17 07:52:22,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-11-17 07:52:22,351 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2024-11-17 07:52:22,352 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 146 flow [2024-11-17 07:52:22,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:22,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:22,353 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:22,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 07:52:22,353 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:22,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:22,354 INFO L85 PathProgramCache]: Analyzing trace with hash 643850804, now seen corresponding path program 1 times [2024-11-17 07:52:22,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:22,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683362108] [2024-11-17 07:52:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:22,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:22,440 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 07:52:22,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:22,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683362108] [2024-11-17 07:52:22,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683362108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:22,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:22,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:22,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108672284] [2024-11-17 07:52:22,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:22,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:52:22,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:22,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:52:22,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:52:22,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 60 [2024-11-17 07:52:22,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 07:52:22,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:22,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 60 [2024-11-17 07:52:22,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:22,706 INFO L124 PetriNetUnfolderBase]: 590/1115 cut-off events. [2024-11-17 07:52:22,706 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2024-11-17 07:52:22,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2387 conditions, 1115 events. 590/1115 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6740 event pairs, 89 based on Foata normal form. 0/1031 useless extension candidates. Maximal degree in co-relation 1876. Up to 497 conditions per place. [2024-11-17 07:52:22,714 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 48 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-11-17 07:52:22,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 312 flow [2024-11-17 07:52:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:52:22,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:52:22,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-11-17 07:52:22,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6633333333333333 [2024-11-17 07:52:22,716 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 146 flow. Second operand 5 states and 199 transitions. [2024-11-17 07:52:22,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 312 flow [2024-11-17 07:52:22,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:52:22,721 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 150 flow [2024-11-17 07:52:22,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-11-17 07:52:22,722 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2024-11-17 07:52:22,722 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 150 flow [2024-11-17 07:52:22,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 07:52:22,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:22,724 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:22,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:52:22,724 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:22,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:22,728 INFO L85 PathProgramCache]: Analyzing trace with hash 643851797, now seen corresponding path program 1 times [2024-11-17 07:52:22,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:22,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4139481] [2024-11-17 07:52:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:22,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:22,783 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 07:52:22,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:22,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4139481] [2024-11-17 07:52:22,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4139481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:22,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:22,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:22,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304632635] [2024-11-17 07:52:22,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:22,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:22,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:22,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:22,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:22,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 60 [2024-11-17 07:52:22,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 07:52:22,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:22,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 60 [2024-11-17 07:52:22,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:22,979 INFO L124 PetriNetUnfolderBase]: 468/996 cut-off events. [2024-11-17 07:52:22,979 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2024-11-17 07:52:22,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2085 conditions, 996 events. 468/996 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6305 event pairs, 189 based on Foata normal form. 20/896 useless extension candidates. Maximal degree in co-relation 1089. Up to 443 conditions per place. [2024-11-17 07:52:22,985 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 50 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2024-11-17 07:52:22,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 77 transitions, 306 flow [2024-11-17 07:52:22,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-11-17 07:52:22,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2024-11-17 07:52:22,987 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 150 flow. Second operand 4 states and 167 transitions. [2024-11-17 07:52:22,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 77 transitions, 306 flow [2024-11-17 07:52:22,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 294 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:52:22,990 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 140 flow [2024-11-17 07:52:22,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-11-17 07:52:22,991 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-11-17 07:52:22,991 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 140 flow [2024-11-17 07:52:22,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 07:52:22,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:22,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:22,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 07:52:22,992 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:22,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:22,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1045117263, now seen corresponding path program 1 times [2024-11-17 07:52:22,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:22,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476897454] [2024-11-17 07:52:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:22,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:23,034 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 07:52:23,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:23,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476897454] [2024-11-17 07:52:23,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476897454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:23,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:23,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:23,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244083067] [2024-11-17 07:52:23,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:23,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:23,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:23,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 60 [2024-11-17 07:52:23,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 07:52:23,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:23,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 60 [2024-11-17 07:52:23,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:23,164 INFO L124 PetriNetUnfolderBase]: 347/846 cut-off events. [2024-11-17 07:52:23,164 INFO L125 PetriNetUnfolderBase]: For 288/302 co-relation queries the response was YES. [2024-11-17 07:52:23,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1584 conditions, 846 events. 347/846 cut-off events. For 288/302 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5614 event pairs, 125 based on Foata normal form. 14/736 useless extension candidates. Maximal degree in co-relation 879. Up to 292 conditions per place. [2024-11-17 07:52:23,169 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 36 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-11-17 07:52:23,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 64 transitions, 266 flow [2024-11-17 07:52:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:23,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-11-17 07:52:23,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 07:52:23,171 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 140 flow. Second operand 4 states and 160 transitions. [2024-11-17 07:52:23,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 64 transitions, 266 flow [2024-11-17 07:52:23,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 64 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:52:23,174 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 138 flow [2024-11-17 07:52:23,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-17 07:52:23,176 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-11-17 07:52:23,176 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 138 flow [2024-11-17 07:52:23,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 07:52:23,177 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:23,177 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:23,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 07:52:23,178 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:23,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:23,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1515461153, now seen corresponding path program 1 times [2024-11-17 07:52:23,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:23,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676632141] [2024-11-17 07:52:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:23,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:23,259 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 07:52:23,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:23,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676632141] [2024-11-17 07:52:23,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676632141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:23,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:23,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:52:23,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118805345] [2024-11-17 07:52:23,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:23,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:52:23,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:23,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:52:23,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:52:23,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2024-11-17 07:52:23,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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 07:52:23,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:23,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2024-11-17 07:52:23,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:23,524 INFO L124 PetriNetUnfolderBase]: 570/1066 cut-off events. [2024-11-17 07:52:23,524 INFO L125 PetriNetUnfolderBase]: For 331/333 co-relation queries the response was YES. [2024-11-17 07:52:23,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2289 conditions, 1066 events. 570/1066 cut-off events. For 331/333 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6351 event pairs, 87 based on Foata normal form. 42/1024 useless extension candidates. Maximal degree in co-relation 1789. Up to 285 conditions per place. [2024-11-17 07:52:23,531 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 57 selfloop transitions, 9 changer transitions 0/87 dead transitions. [2024-11-17 07:52:23,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 87 transitions, 360 flow [2024-11-17 07:52:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:52:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:52:23,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2024-11-17 07:52:23,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6138888888888889 [2024-11-17 07:52:23,532 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 138 flow. Second operand 6 states and 221 transitions. [2024-11-17 07:52:23,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 87 transitions, 360 flow [2024-11-17 07:52:23,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 87 transitions, 342 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:52:23,536 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 157 flow [2024-11-17 07:52:23,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=157, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-17 07:52:23,536 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2024-11-17 07:52:23,537 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 157 flow [2024-11-17 07:52:23,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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 07:52:23,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:23,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:23,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:52:23,542 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:23,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:23,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1184033851, now seen corresponding path program 1 times [2024-11-17 07:52:23,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:23,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063006570] [2024-11-17 07:52:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:23,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:23,611 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 07:52:23,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:23,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063006570] [2024-11-17 07:52:23,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063006570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:23,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:23,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 07:52:23,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161395717] [2024-11-17 07:52:23,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:23,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:52:23,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:23,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:52:23,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:52:23,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2024-11-17 07:52:23,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 07:52:23,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:23,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2024-11-17 07:52:23,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:23,859 INFO L124 PetriNetUnfolderBase]: 565/1013 cut-off events. [2024-11-17 07:52:23,859 INFO L125 PetriNetUnfolderBase]: For 584/584 co-relation queries the response was YES. [2024-11-17 07:52:23,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1013 events. 565/1013 cut-off events. For 584/584 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5760 event pairs, 187 based on Foata normal form. 20/940 useless extension candidates. Maximal degree in co-relation 1309. Up to 463 conditions per place. [2024-11-17 07:52:23,867 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 73 selfloop transitions, 8 changer transitions 0/100 dead transitions. [2024-11-17 07:52:23,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 425 flow [2024-11-17 07:52:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:52:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:52:23,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-11-17 07:52:23,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2024-11-17 07:52:23,869 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 157 flow. Second operand 6 states and 238 transitions. [2024-11-17 07:52:23,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 425 flow [2024-11-17 07:52:23,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 100 transitions, 407 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-17 07:52:23,874 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 168 flow [2024-11-17 07:52:23,875 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-17 07:52:23,876 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-11-17 07:52:23,877 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 168 flow [2024-11-17 07:52:23,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 07:52:23,877 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:23,877 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:23,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:52:23,878 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:23,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:23,878 INFO L85 PathProgramCache]: Analyzing trace with hash 663716755, now seen corresponding path program 1 times [2024-11-17 07:52:23,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:23,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666547473] [2024-11-17 07:52:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:23,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:23,950 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 07:52:23,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:23,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666547473] [2024-11-17 07:52:23,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666547473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:23,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:23,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:23,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774105212] [2024-11-17 07:52:23,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:23,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:52:23,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:23,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:52:23,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:52:23,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 60 [2024-11-17 07:52:23,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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 07:52:23,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:23,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 60 [2024-11-17 07:52:23,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:24,151 INFO L124 PetriNetUnfolderBase]: 538/997 cut-off events. [2024-11-17 07:52:24,151 INFO L125 PetriNetUnfolderBase]: For 1457/1521 co-relation queries the response was YES. [2024-11-17 07:52:24,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 997 events. 538/997 cut-off events. For 1457/1521 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5772 event pairs, 126 based on Foata normal form. 64/948 useless extension candidates. Maximal degree in co-relation 1542. Up to 351 conditions per place. [2024-11-17 07:52:24,157 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 58 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2024-11-17 07:52:24,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 82 transitions, 438 flow [2024-11-17 07:52:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:52:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:52:24,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-11-17 07:52:24,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6566666666666666 [2024-11-17 07:52:24,159 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 168 flow. Second operand 5 states and 197 transitions. [2024-11-17 07:52:24,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 82 transitions, 438 flow [2024-11-17 07:52:24,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 82 transitions, 398 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-17 07:52:24,163 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 167 flow [2024-11-17 07:52:24,164 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-17 07:52:24,164 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2024-11-17 07:52:24,165 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 167 flow [2024-11-17 07:52:24,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 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 07:52:24,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:24,166 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:24,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:52:24,166 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:24,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash 663717748, now seen corresponding path program 1 times [2024-11-17 07:52:24,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:24,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150023960] [2024-11-17 07:52:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:24,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:24,210 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 07:52:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150023960] [2024-11-17 07:52:24,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150023960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:24,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:24,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:24,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676865083] [2024-11-17 07:52:24,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:24,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:24,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:24,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:24,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:24,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 60 [2024-11-17 07:52:24,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 07:52:24,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:24,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 60 [2024-11-17 07:52:24,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:24,388 INFO L124 PetriNetUnfolderBase]: 599/1223 cut-off events. [2024-11-17 07:52:24,388 INFO L125 PetriNetUnfolderBase]: For 1070/1138 co-relation queries the response was YES. [2024-11-17 07:52:24,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1223 events. 599/1223 cut-off events. For 1070/1138 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7811 event pairs, 254 based on Foata normal form. 68/1190 useless extension candidates. Maximal degree in co-relation 1805. Up to 562 conditions per place. [2024-11-17 07:52:24,397 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 60 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-11-17 07:52:24,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 425 flow [2024-11-17 07:52:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-11-17 07:52:24,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-11-17 07:52:24,399 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 167 flow. Second operand 4 states and 166 transitions. [2024-11-17 07:52:24,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 425 flow [2024-11-17 07:52:24,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 416 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:52:24,403 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 187 flow [2024-11-17 07:52:24,403 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-11-17 07:52:24,404 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2024-11-17 07:52:24,404 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 187 flow [2024-11-17 07:52:24,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 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 07:52:24,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:24,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:24,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 07:52:24,404 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:24,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:24,405 INFO L85 PathProgramCache]: Analyzing trace with hash -899616647, now seen corresponding path program 1 times [2024-11-17 07:52:24,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:24,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027743067] [2024-11-17 07:52:24,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:24,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:24,467 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 07:52:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:24,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027743067] [2024-11-17 07:52:24,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027743067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:24,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:24,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:52:24,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610220770] [2024-11-17 07:52:24,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:24,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:52:24,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:24,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:52:24,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:52:24,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2024-11-17 07:52:24,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 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 07:52:24,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:24,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2024-11-17 07:52:24,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:24,718 INFO L124 PetriNetUnfolderBase]: 713/1310 cut-off events. [2024-11-17 07:52:24,718 INFO L125 PetriNetUnfolderBase]: For 1503/1591 co-relation queries the response was YES. [2024-11-17 07:52:24,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3249 conditions, 1310 events. 713/1310 cut-off events. For 1503/1591 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 7848 event pairs, 126 based on Foata normal form. 134/1366 useless extension candidates. Maximal degree in co-relation 2143. Up to 328 conditions per place. [2024-11-17 07:52:24,727 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 71 selfloop transitions, 9 changer transitions 0/99 dead transitions. [2024-11-17 07:52:24,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 527 flow [2024-11-17 07:52:24,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:52:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:52:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-11-17 07:52:24,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-11-17 07:52:24,729 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 187 flow. Second operand 6 states and 218 transitions. [2024-11-17 07:52:24,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 527 flow [2024-11-17 07:52:24,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 99 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:52:24,735 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 209 flow [2024-11-17 07:52:24,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-11-17 07:52:24,737 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-11-17 07:52:24,737 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 209 flow [2024-11-17 07:52:24,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 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 07:52:24,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:24,738 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:24,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 07:52:24,738 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2024-11-17 07:52:24,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1199622918, now seen corresponding path program 1 times [2024-11-17 07:52:24,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:24,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488030170] [2024-11-17 07:52:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:24,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:24,775 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 07:52:24,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:24,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488030170] [2024-11-17 07:52:24,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488030170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:24,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:24,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:24,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147244446] [2024-11-17 07:52:24,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:24,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:24,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:24,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:24,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:24,804 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 60 [2024-11-17 07:52:24,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 07:52:24,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:24,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 60 [2024-11-17 07:52:24,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:24,977 INFO L124 PetriNetUnfolderBase]: 713/1285 cut-off events. [2024-11-17 07:52:24,978 INFO L125 PetriNetUnfolderBase]: For 2041/2129 co-relation queries the response was YES. [2024-11-17 07:52:24,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3531 conditions, 1285 events. 713/1285 cut-off events. For 2041/2129 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7666 event pairs, 254 based on Foata normal form. 111/1333 useless extension candidates. Maximal degree in co-relation 2339. Up to 585 conditions per place. [2024-11-17 07:52:24,983 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 0 selfloop transitions, 0 changer transitions 84/84 dead transitions. [2024-11-17 07:52:24,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 460 flow [2024-11-17 07:52:24,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-11-17 07:52:24,984 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-11-17 07:52:24,985 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 209 flow. Second operand 4 states and 163 transitions. [2024-11-17 07:52:24,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 460 flow [2024-11-17 07:52:24,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 446 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:52:24,988 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-11-17 07:52:24,989 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-11-17 07:52:24,989 INFO L277 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2024-11-17 07:52:24,990 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-11-17 07:52:24,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 07:52:24,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 26 remaining) [2024-11-17 07:52:24,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2024-11-17 07:52:24,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2024-11-17 07:52:24,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2024-11-17 07:52:24,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2024-11-17 07:52:24,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2024-11-17 07:52:24,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2024-11-17 07:52:24,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2024-11-17 07:52:24,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2024-11-17 07:52:24,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 26 remaining) [2024-11-17 07:52:24,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2024-11-17 07:52:24,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2024-11-17 07:52:24,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 26 remaining) [2024-11-17 07:52:24,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 26 remaining) [2024-11-17 07:52:24,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2024-11-17 07:52:24,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2024-11-17 07:52:24,995 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2024-11-17 07:52:24,995 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2024-11-17 07:52:24,995 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2024-11-17 07:52:24,995 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2024-11-17 07:52:24,995 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2024-11-17 07:52:24,996 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2024-11-17 07:52:24,996 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2024-11-17 07:52:24,996 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2024-11-17 07:52:24,996 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2024-11-17 07:52:24,996 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2024-11-17 07:52:24,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 07:52:24,997 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:25,004 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-17 07:52:25,004 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 07:52:25,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 07:52:25 BasicIcfg [2024-11-17 07:52:25,011 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 07:52:25,012 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 07:52:25,012 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 07:52:25,012 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 07:52:25,013 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:20" (3/4) ... [2024-11-17 07:52:25,014 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-17 07:52:25,017 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-17 07:52:25,017 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-17 07:52:25,024 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 54 nodes and edges [2024-11-17 07:52:25,025 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2024-11-17 07:52:25,025 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-17 07:52:25,025 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-17 07:52:25,111 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 07:52:25,112 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-17 07:52:25,112 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 07:52:25,113 INFO L158 Benchmark]: Toolchain (without parser) took 5753.41ms. Allocated memory was 161.5MB in the beginning and 228.6MB in the end (delta: 67.1MB). Free memory was 93.4MB in the beginning and 136.7MB in the end (delta: -43.3MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2024-11-17 07:52:25,113 INFO L158 Benchmark]: CDTParser took 1.00ms. Allocated memory is still 109.1MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 07:52:25,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.34ms. Allocated memory is still 161.5MB. Free memory was 93.2MB in the beginning and 132.7MB in the end (delta: -39.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-17 07:52:25,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.03ms. Allocated memory is still 161.5MB. Free memory was 132.7MB in the beginning and 130.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 07:52:25,114 INFO L158 Benchmark]: Boogie Preprocessor took 32.54ms. Allocated memory is still 161.5MB. Free memory was 130.5MB in the beginning and 128.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 07:52:25,114 INFO L158 Benchmark]: IcfgBuilder took 723.31ms. Allocated memory is still 161.5MB. Free memory was 128.6MB in the beginning and 91.4MB in the end (delta: 37.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-11-17 07:52:25,114 INFO L158 Benchmark]: TraceAbstraction took 4489.32ms. Allocated memory was 161.5MB in the beginning and 228.6MB in the end (delta: 67.1MB). Free memory was 90.6MB in the beginning and 142.0MB in the end (delta: -51.4MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. [2024-11-17 07:52:25,114 INFO L158 Benchmark]: Witness Printer took 100.31ms. Allocated memory is still 228.6MB. Free memory was 142.0MB in the beginning and 136.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-17 07:52:25,116 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00ms. Allocated memory is still 109.1MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 371.34ms. Allocated memory is still 161.5MB. Free memory was 93.2MB in the beginning and 132.7MB in the end (delta: -39.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.03ms. Allocated memory is still 161.5MB. Free memory was 132.7MB in the beginning and 130.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.54ms. Allocated memory is still 161.5MB. Free memory was 130.5MB in the beginning and 128.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 723.31ms. Allocated memory is still 161.5MB. Free memory was 128.6MB in the beginning and 91.4MB in the end (delta: 37.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4489.32ms. Allocated memory was 161.5MB in the beginning and 228.6MB in the end (delta: 67.1MB). Free memory was 90.6MB in the beginning and 142.0MB in the end (delta: -51.4MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. * Witness Printer took 100.31ms. Allocated memory is still 228.6MB. Free memory was 142.0MB in the beginning and 136.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 78]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 79]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 80]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 99 locations, 26 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.4s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 925 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 744 mSDsluCounter, 101 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1707 IncrementalHoareTripleChecker+Invalid, 1773 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 33 mSDtfsCounter, 1707 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=12, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 426 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-17 07:52:25,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE