./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/clever.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:09:37,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:09:37,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:09:37,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:09:37,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:09:37,921 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:09:37,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:09:37,922 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:09:37,922 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:09:37,922 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:09:37,922 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:09:37,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:09:37,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:09:37,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:09:37,923 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:09:37,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:09:37,924 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:09:37,924 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:09:37,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:09:37,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:09:37,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:09:37,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:09:37,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:09:37,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:09:37,924 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:09:37,925 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:09:37,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:09:37,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:09:37,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:09:37,926 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d [2025-02-08 14:09:38,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:09:38,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:09:38,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:09:38,168 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:09:38,168 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:09:38,171 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/clever.wvr.c [2025-02-08 14:09:39,469 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/66dcb76c9/d81898b6c33a46878bd098bc0f319ee6/FLAG430d4e317 [2025-02-08 14:09:39,724 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:09:39,725 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/clever.wvr.c [2025-02-08 14:09:39,732 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/66dcb76c9/d81898b6c33a46878bd098bc0f319ee6/FLAG430d4e317 [2025-02-08 14:09:39,748 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/66dcb76c9/d81898b6c33a46878bd098bc0f319ee6 [2025-02-08 14:09:39,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:09:39,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:09:39,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:09:39,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:09:39,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:09:39,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20e2ed5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39, skipping insertion in model container [2025-02-08 14:09:39,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:09:39,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:09:39,910 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:09:39,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:09:39,933 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:09:39,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39 WrapperNode [2025-02-08 14:09:39,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:09:39,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:09:39,935 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:09:39,935 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:09:39,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,957 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2025-02-08 14:09:39,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:09:39,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:09:39,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:09:39,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:09:39,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,983 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]. [2025-02-08 14:09:39,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,989 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,995 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:39,997 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:09:39,998 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:09:39,999 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:09:39,999 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:09:40,000 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (1/1) ... [2025-02-08 14:09:40,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:09:40,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:40,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 14:09:40,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 14:09:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:09:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 14:09:40,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 14:09:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 14:09:40,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 14:09:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:09:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:09:40,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:09:40,058 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 14:09:40,125 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:09:40,127 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:09:40,290 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:09:40,291 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:09:40,454 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:09:40,454 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:09:40,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:09:40 BoogieIcfgContainer [2025-02-08 14:09:40,455 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:09:40,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:09:40,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:09:40,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:09:40,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:09:39" (1/3) ... [2025-02-08 14:09:40,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed82626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:09:40, skipping insertion in model container [2025-02-08 14:09:40,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:09:39" (2/3) ... [2025-02-08 14:09:40,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed82626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:09:40, skipping insertion in model container [2025-02-08 14:09:40,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:09:40" (3/3) ... [2025-02-08 14:09:40,465 INFO L128 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2025-02-08 14:09:40,477 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:09:40,478 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG clever.wvr.c that has 3 procedures, 28 locations, 1 initial locations, 3 loop locations, and 6 error locations. [2025-02-08 14:09:40,478 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:09:40,514 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:09:40,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 30 transitions, 74 flow [2025-02-08 14:09:40,559 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2025-02-08 14:09:40,561 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:09:40,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 3/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 63 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2025-02-08 14:09:40,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 30 transitions, 74 flow [2025-02-08 14:09:40,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 26 transitions, 61 flow [2025-02-08 14:09:40,572 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:09:40,585 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;@19bd7c45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:09:40,586 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-02-08 14:09:40,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:09:40,600 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-02-08 14:09:40,600 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 14:09:40,600 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:40,600 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:09:40,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:09:40,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:40,609 INFO L85 PathProgramCache]: Analyzing trace with hash -596427348, now seen corresponding path program 1 times [2025-02-08 14:09:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:40,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144866800] [2025-02-08 14:09:40,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:40,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:40,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:09:40,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:09:40,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:40,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:40,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:40,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144866800] [2025-02-08 14:09:40,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144866800] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:40,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:40,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:09:40,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500366806] [2025-02-08 14:09:40,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:40,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:40,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:40,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:40,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:40,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-08 14:09:40,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 61 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:40,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:40,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-08 14:09:40,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:40,919 INFO L124 PetriNetUnfolderBase]: 126/243 cut-off events. [2025-02-08 14:09:40,919 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-02-08 14:09:40,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 243 events. 126/243 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1036 event pairs, 47 based on Foata normal form. 10/173 useless extension candidates. Maximal degree in co-relation 432. Up to 146 conditions per place. [2025-02-08 14:09:40,922 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 19 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2025-02-08 14:09:40,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 118 flow [2025-02-08 14:09:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2025-02-08 14:09:40,931 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2025-02-08 14:09:40,932 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 61 flow. Second operand 4 states and 67 transitions. [2025-02-08 14:09:40,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 118 flow [2025-02-08 14:09:40,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:09:40,936 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 60 flow [2025-02-08 14:09:40,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2025-02-08 14:09:40,941 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2025-02-08 14:09:40,941 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 60 flow [2025-02-08 14:09:40,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:40,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:40,941 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:09:40,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:09:40,942 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:09:40,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash -596427315, now seen corresponding path program 1 times [2025-02-08 14:09:40,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:40,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142324312] [2025-02-08 14:09:40,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:40,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:40,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:09:40,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:09:40,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:40,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:41,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:41,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142324312] [2025-02-08 14:09:41,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142324312] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:41,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:41,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:09:41,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616537587] [2025-02-08 14:09:41,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:41,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:41,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:41,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:41,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:41,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-08 14:09:41,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:41,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:41,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-08 14:09:41,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:41,169 INFO L124 PetriNetUnfolderBase]: 237/440 cut-off events. [2025-02-08 14:09:41,169 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-02-08 14:09:41,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 440 events. 237/440 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2034 event pairs, 85 based on Foata normal form. 10/352 useless extension candidates. Maximal degree in co-relation 461. Up to 216 conditions per place. [2025-02-08 14:09:41,178 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 33 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2025-02-08 14:09:41,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 44 transitions, 179 flow [2025-02-08 14:09:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:41,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2025-02-08 14:09:41,179 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2025-02-08 14:09:41,180 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 60 flow. Second operand 4 states and 82 transitions. [2025-02-08 14:09:41,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 44 transitions, 179 flow [2025-02-08 14:09:41,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 169 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:09:41,182 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 82 flow [2025-02-08 14:09:41,182 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2025-02-08 14:09:41,183 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2025-02-08 14:09:41,183 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 82 flow [2025-02-08 14:09:41,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:41,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:41,183 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:41,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:09:41,184 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:09:41,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:41,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1311573009, now seen corresponding path program 1 times [2025-02-08 14:09:41,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:41,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898128470] [2025-02-08 14:09:41,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:41,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:41,194 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:09:41,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:09:41,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:41,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:41,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:41,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898128470] [2025-02-08 14:09:41,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898128470] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:41,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:41,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:09:41,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293794118] [2025-02-08 14:09:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:41,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:41,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:41,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:41,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:41,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-08 14:09:41,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:41,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:41,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-08 14:09:41,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:41,365 INFO L124 PetriNetUnfolderBase]: 246/467 cut-off events. [2025-02-08 14:09:41,365 INFO L125 PetriNetUnfolderBase]: For 152/158 co-relation queries the response was YES. [2025-02-08 14:09:41,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 467 events. 246/467 cut-off events. For 152/158 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2168 event pairs, 88 based on Foata normal form. 24/420 useless extension candidates. Maximal degree in co-relation 716. Up to 234 conditions per place. [2025-02-08 14:09:41,368 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 27 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2025-02-08 14:09:41,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 181 flow [2025-02-08 14:09:41,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2025-02-08 14:09:41,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.575 [2025-02-08 14:09:41,370 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 82 flow. Second operand 4 states and 69 transitions. [2025-02-08 14:09:41,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 181 flow [2025-02-08 14:09:41,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 181 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-08 14:09:41,372 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 86 flow [2025-02-08 14:09:41,372 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2025-02-08 14:09:41,373 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2025-02-08 14:09:41,373 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 86 flow [2025-02-08 14:09:41,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:41,373 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:41,373 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:41,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:09:41,374 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:09:41,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:41,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1309378372, now seen corresponding path program 1 times [2025-02-08 14:09:41,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:41,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296682703] [2025-02-08 14:09:41,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:41,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:41,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:09:41,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:09:41,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:41,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:41,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:41,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296682703] [2025-02-08 14:09:41,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296682703] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:41,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:41,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:09:41,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605811596] [2025-02-08 14:09:41,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:41,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:41,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:41,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:41,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-08 14:09:41,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:41,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:41,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-08 14:09:41,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:41,547 INFO L124 PetriNetUnfolderBase]: 366/703 cut-off events. [2025-02-08 14:09:41,548 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2025-02-08 14:09:41,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1659 conditions, 703 events. 366/703 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3581 event pairs, 60 based on Foata normal form. 0/677 useless extension candidates. Maximal degree in co-relation 1241. Up to 371 conditions per place. [2025-02-08 14:09:41,554 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 37 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2025-02-08 14:09:41,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 237 flow [2025-02-08 14:09:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2025-02-08 14:09:41,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 14:09:41,557 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 86 flow. Second operand 4 states and 80 transitions. [2025-02-08 14:09:41,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 237 flow [2025-02-08 14:09:41,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 48 transitions, 223 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:09:41,559 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 100 flow [2025-02-08 14:09:41,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2025-02-08 14:09:41,559 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2025-02-08 14:09:41,561 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 100 flow [2025-02-08 14:09:41,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:41,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:41,561 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:41,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 14:09:41,562 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:09:41,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2004057374, now seen corresponding path program 1 times [2025-02-08 14:09:41,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:41,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621742940] [2025-02-08 14:09:41,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:41,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:41,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:09:41,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:09:41,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:41,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:41,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:41,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621742940] [2025-02-08 14:09:41,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621742940] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:41,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:09:41,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:09:41,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179268838] [2025-02-08 14:09:41,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:41,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:41,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:41,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:41,652 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:41,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-08 14:09:41,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:41,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:41,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-08 14:09:41,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:41,807 INFO L124 PetriNetUnfolderBase]: 500/976 cut-off events. [2025-02-08 14:09:41,807 INFO L125 PetriNetUnfolderBase]: For 504/556 co-relation queries the response was YES. [2025-02-08 14:09:41,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 976 events. 500/976 cut-off events. For 504/556 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5320 event pairs, 106 based on Foata normal form. 0/857 useless extension candidates. Maximal degree in co-relation 1815. Up to 456 conditions per place. [2025-02-08 14:09:41,813 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 47 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2025-02-08 14:09:41,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 58 transitions, 318 flow [2025-02-08 14:09:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2025-02-08 14:09:41,815 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-08 14:09:41,815 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 100 flow. Second operand 4 states and 80 transitions. [2025-02-08 14:09:41,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 58 transitions, 318 flow [2025-02-08 14:09:41,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:09:41,821 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 118 flow [2025-02-08 14:09:41,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2025-02-08 14:09:41,822 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2025-02-08 14:09:41,822 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 118 flow [2025-02-08 14:09:41,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:41,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:41,822 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:41,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:09:41,822 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:09:41,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:41,823 INFO L85 PathProgramCache]: Analyzing trace with hash 113796482, now seen corresponding path program 1 times [2025-02-08 14:09:41,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:41,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226107129] [2025-02-08 14:09:41,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:41,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:41,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:09:41,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:09:41,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:41,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:41,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:41,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226107129] [2025-02-08 14:09:41,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226107129] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:09:41,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849619230] [2025-02-08 14:09:41,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:41,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:41,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:41,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:09:41,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 14:09:41,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:09:41,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:09:41,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:41,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:41,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:09:41,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:09:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:42,031 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:09:42,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849619230] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:09:42,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:09:42,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:09:42,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775833566] [2025-02-08 14:09:42,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:09:42,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:09:42,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:42,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:09:42,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:09:42,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-08 14:09:42,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-02-08 14:09:42,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:42,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-08 14:09:42,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:42,188 INFO L124 PetriNetUnfolderBase]: 475/929 cut-off events. [2025-02-08 14:09:42,189 INFO L125 PetriNetUnfolderBase]: For 524/560 co-relation queries the response was YES. [2025-02-08 14:09:42,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 929 events. 475/929 cut-off events. For 524/560 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5086 event pairs, 28 based on Foata normal form. 28/925 useless extension candidates. Maximal degree in co-relation 2049. Up to 258 conditions per place. [2025-02-08 14:09:42,195 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 58 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2025-02-08 14:09:42,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 392 flow [2025-02-08 14:09:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:09:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:09:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2025-02-08 14:09:42,196 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-02-08 14:09:42,196 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 118 flow. Second operand 6 states and 117 transitions. [2025-02-08 14:09:42,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 71 transitions, 392 flow [2025-02-08 14:09:42,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 71 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:09:42,198 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 130 flow [2025-02-08 14:09:42,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2025-02-08 14:09:42,199 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2025-02-08 14:09:42,199 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 130 flow [2025-02-08 14:09:42,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-02-08 14:09:42,199 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:42,199 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:42,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:09:42,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:42,405 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:09:42,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:42,406 INFO L85 PathProgramCache]: Analyzing trace with hash -767276120, now seen corresponding path program 1 times [2025-02-08 14:09:42,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:42,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078109317] [2025-02-08 14:09:42,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:42,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:42,414 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:09:42,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:09:42,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:42,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:42,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:42,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078109317] [2025-02-08 14:09:42,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078109317] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:09:42,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245219696] [2025-02-08 14:09:42,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:42,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:42,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:42,494 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:09:42,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 14:09:42,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:09:42,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:09:42,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:42,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:42,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:09:42,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:09:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:42,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:09:42,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:42,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245219696] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:09:42,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:09:42,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:09:42,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575418239] [2025-02-08 14:09:42,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:09:42,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:09:42,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:42,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:09:42,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:09:42,617 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-08 14:09:42,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 130 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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) [2025-02-08 14:09:42,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:42,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-08 14:09:42,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:42,956 INFO L124 PetriNetUnfolderBase]: 1057/2087 cut-off events. [2025-02-08 14:09:42,956 INFO L125 PetriNetUnfolderBase]: For 1799/1874 co-relation queries the response was YES. [2025-02-08 14:09:42,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5665 conditions, 2087 events. 1057/2087 cut-off events. For 1799/1874 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 12686 event pairs, 213 based on Foata normal form. 84/2165 useless extension candidates. Maximal degree in co-relation 3767. Up to 463 conditions per place. [2025-02-08 14:09:42,969 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 108 selfloop transitions, 13 changer transitions 0/128 dead transitions. [2025-02-08 14:09:42,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 128 transitions, 748 flow [2025-02-08 14:09:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:09:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:09:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2025-02-08 14:09:42,970 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2025-02-08 14:09:42,970 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 130 flow. Second operand 10 states and 205 transitions. [2025-02-08 14:09:42,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 128 transitions, 748 flow [2025-02-08 14:09:42,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 128 transitions, 720 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-08 14:09:42,976 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 204 flow [2025-02-08 14:09:42,976 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=204, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2025-02-08 14:09:42,976 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2025-02-08 14:09:42,976 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 204 flow [2025-02-08 14:09:42,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 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) [2025-02-08 14:09:42,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:42,977 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:42,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 14:09:43,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:43,181 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:09:43,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:43,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1467448843, now seen corresponding path program 1 times [2025-02-08 14:09:43,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:43,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249308234] [2025-02-08 14:09:43,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:43,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:43,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:09:43,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:09:43,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:43,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:43,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249308234] [2025-02-08 14:09:43,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249308234] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:09:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786179510] [2025-02-08 14:09:43,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:43,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:43,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:43,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:09:43,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 14:09:43,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:09:43,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:09:43,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:43,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:43,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:09:43,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:09:43,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:09:43,301 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:09:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:09:43,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786179510] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:09:43,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:09:43,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2, 2] total 6 [2025-02-08 14:09:43,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020942381] [2025-02-08 14:09:43,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:09:43,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 14:09:43,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:43,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 14:09:43,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:09:43,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-08 14:09:43,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 204 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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) [2025-02-08 14:09:43,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:43,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-08 14:09:43,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:43,609 INFO L124 PetriNetUnfolderBase]: 1473/2804 cut-off events. [2025-02-08 14:09:43,609 INFO L125 PetriNetUnfolderBase]: For 3444/3528 co-relation queries the response was YES. [2025-02-08 14:09:43,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7919 conditions, 2804 events. 1473/2804 cut-off events. For 3444/3528 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17444 event pairs, 253 based on Foata normal form. 0/2802 useless extension candidates. Maximal degree in co-relation 6843. Up to 584 conditions per place. [2025-02-08 14:09:43,623 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 132 selfloop transitions, 7 changer transitions 12/158 dead transitions. [2025-02-08 14:09:43,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 158 transitions, 1219 flow [2025-02-08 14:09:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:09:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:09:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2025-02-08 14:09:43,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6291666666666667 [2025-02-08 14:09:43,625 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 204 flow. Second operand 8 states and 151 transitions. [2025-02-08 14:09:43,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 158 transitions, 1219 flow [2025-02-08 14:09:43,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 158 transitions, 1135 flow, removed 18 selfloop flow, removed 2 redundant places. [2025-02-08 14:09:43,631 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 203 flow [2025-02-08 14:09:43,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=203, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2025-02-08 14:09:43,631 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 25 predicate places. [2025-02-08 14:09:43,631 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 203 flow [2025-02-08 14:09:43,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 states have internal predecessors, (104), 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) [2025-02-08 14:09:43,632 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:43,632 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-08 14:09:43,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 14:09:43,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:43,836 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:09:43,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:43,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1037571682, now seen corresponding path program 1 times [2025-02-08 14:09:43,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:43,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544899038] [2025-02-08 14:09:43,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:43,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:43,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:09:43,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:09:43,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:43,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:09:43,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544899038] [2025-02-08 14:09:43,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544899038] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:09:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387168149] [2025-02-08 14:09:43,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:09:43,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:43,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:43,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:09:43,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 14:09:43,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:09:43,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:09:43,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:09:43,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:43,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:09:43,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:09:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:09:43,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:09:43,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 14:09:43,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387168149] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:09:43,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:09:43,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2025-02-08 14:09:43,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954036415] [2025-02-08 14:09:43,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:09:43,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 14:09:43,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:43,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 14:09:43,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-08 14:09:43,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-08 14:09:43,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 203 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 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) [2025-02-08 14:09:43,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:43,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-08 14:09:43,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:44,337 INFO L124 PetriNetUnfolderBase]: 2070/3964 cut-off events. [2025-02-08 14:09:44,337 INFO L125 PetriNetUnfolderBase]: For 4955/4955 co-relation queries the response was YES. [2025-02-08 14:09:44,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11940 conditions, 3964 events. 2070/3964 cut-off events. For 4955/4955 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 25903 event pairs, 278 based on Foata normal form. 0/3958 useless extension candidates. Maximal degree in co-relation 10728. Up to 935 conditions per place. [2025-02-08 14:09:44,358 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 112 selfloop transitions, 12 changer transitions 0/130 dead transitions. [2025-02-08 14:09:44,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 935 flow [2025-02-08 14:09:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 14:09:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 14:09:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2025-02-08 14:09:44,359 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5962962962962963 [2025-02-08 14:09:44,359 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 203 flow. Second operand 9 states and 161 transitions. [2025-02-08 14:09:44,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 935 flow [2025-02-08 14:09:44,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 130 transitions, 834 flow, removed 28 selfloop flow, removed 5 redundant places. [2025-02-08 14:09:44,370 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 258 flow [2025-02-08 14:09:44,370 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2025-02-08 14:09:44,370 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2025-02-08 14:09:44,371 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 258 flow [2025-02-08 14:09:44,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 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) [2025-02-08 14:09:44,371 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:09:44,371 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1] [2025-02-08 14:09:44,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 14:09:44,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-02-08 14:09:44,572 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-02-08 14:09:44,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:09:44,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1455230205, now seen corresponding path program 2 times [2025-02-08 14:09:44,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:09:44,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851701299] [2025-02-08 14:09:44,573 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:09:44,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:09:44,579 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-08 14:09:44,582 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 19 statements. [2025-02-08 14:09:44,583 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:09:44,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:09:44,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:09:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851701299] [2025-02-08 14:09:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851701299] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:09:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113519219] [2025-02-08 14:09:44,602 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:09:44,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:09:44,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:09:44,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 14:09:44,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 14:09:44,636 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-08 14:09:44,642 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 19 statements. [2025-02-08 14:09:44,642 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:09:44,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:09:44,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:09:44,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:09:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:09:44,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:09:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 14:09:44,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113519219] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:09:44,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:09:44,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-02-08 14:09:44,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339240208] [2025-02-08 14:09:44,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:09:44,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:09:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:09:44,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:09:44,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:09:44,705 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2025-02-08 14:09:44,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:44,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:09:44,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2025-02-08 14:09:44,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:09:44,980 INFO L124 PetriNetUnfolderBase]: 2070/3942 cut-off events. [2025-02-08 14:09:44,980 INFO L125 PetriNetUnfolderBase]: For 5412/5412 co-relation queries the response was YES. [2025-02-08 14:09:44,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11823 conditions, 3942 events. 2070/3942 cut-off events. For 5412/5412 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 25716 event pairs, 1223 based on Foata normal form. 60/3994 useless extension candidates. Maximal degree in co-relation 10556. Up to 2556 conditions per place. [2025-02-08 14:09:44,990 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2025-02-08 14:09:44,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 380 flow [2025-02-08 14:09:44,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:09:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:09:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2025-02-08 14:09:44,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-02-08 14:09:44,993 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 258 flow. Second operand 4 states and 64 transitions. [2025-02-08 14:09:44,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 380 flow [2025-02-08 14:09:45,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 353 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-02-08 14:09:45,004 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2025-02-08 14:09:45,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2025-02-08 14:09:45,006 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2025-02-08 14:09:45,006 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2025-02-08 14:09:45,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2025-02-08 14:09:45,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2025-02-08 14:09:45,010 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2025-02-08 14:09:45,010 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2025-02-08 14:09:45,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 14:09:45,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-08 14:09:45,211 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:09:45,215 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 14:09:45,215 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 14:09:45,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 02:09:45 BasicIcfg [2025-02-08 14:09:45,221 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 14:09:45,222 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:09:45,222 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:09:45,222 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:09:45,222 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:09:40" (3/4) ... [2025-02-08 14:09:45,224 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 14:09:45,230 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-08 14:09:45,230 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-08 14:09:45,236 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 57 nodes and edges [2025-02-08 14:09:45,236 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2025-02-08 14:09:45,236 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-02-08 14:09:45,236 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-08 14:09:45,321 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:09:45,322 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 14:09:45,322 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:09:45,322 INFO L158 Benchmark]: Toolchain (without parser) took 5570.70ms. Allocated memory was 167.8MB in the beginning and 369.1MB in the end (delta: 201.3MB). Free memory was 129.8MB in the beginning and 277.4MB in the end (delta: -147.6MB). Peak memory consumption was 52.9MB. Max. memory is 16.1GB. [2025-02-08 14:09:45,323 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 201.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:09:45,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.48ms. Allocated memory is still 167.8MB. Free memory was 129.8MB in the beginning and 118.1MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:09:45,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.71ms. Allocated memory is still 167.8MB. Free memory was 118.1MB in the beginning and 117.2MB in the end (delta: 944.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:09:45,323 INFO L158 Benchmark]: Boogie Preprocessor took 39.94ms. Allocated memory is still 167.8MB. Free memory was 117.2MB in the beginning and 115.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:09:45,323 INFO L158 Benchmark]: IcfgBuilder took 456.80ms. Allocated memory is still 167.8MB. Free memory was 115.7MB in the beginning and 85.2MB in the end (delta: 30.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 14:09:45,324 INFO L158 Benchmark]: TraceAbstraction took 4764.70ms. Allocated memory was 167.8MB in the beginning and 369.1MB in the end (delta: 201.3MB). Free memory was 84.8MB in the beginning and 281.8MB in the end (delta: -197.0MB). Peak memory consumption was 178.7MB. Max. memory is 16.1GB. [2025-02-08 14:09:45,324 INFO L158 Benchmark]: Witness Printer took 100.05ms. Allocated memory is still 369.1MB. Free memory was 281.8MB in the beginning and 277.4MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:09:45,325 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 201.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.48ms. Allocated memory is still 167.8MB. Free memory was 129.8MB in the beginning and 118.1MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.71ms. Allocated memory is still 167.8MB. Free memory was 118.1MB in the beginning and 117.2MB in the end (delta: 944.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.94ms. Allocated memory is still 167.8MB. Free memory was 117.2MB in the beginning and 115.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 456.80ms. Allocated memory is still 167.8MB. Free memory was 115.7MB in the beginning and 85.2MB in the end (delta: 30.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4764.70ms. Allocated memory was 167.8MB in the beginning and 369.1MB in the end (delta: 201.3MB). Free memory was 84.8MB in the beginning and 281.8MB in the end (delta: -197.0MB). Peak memory consumption was 178.7MB. Max. memory is 16.1GB. * Witness Printer took 100.05ms. Allocated memory is still 369.1MB. Free memory was 281.8MB in the beginning and 277.4MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: 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, 49 locations, 14 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: 4.7s, OverallIterations: 10, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 449 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 415 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 940 IncrementalHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 16 mSDtfsCounter, 940 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=9, InterpolantAutomatonStates: 57, 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, 0.9s InterpolantComputationTime, 154 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 534 SizeOfPredicates, 13 NumberOfNonLiveVariables, 332 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 72/124 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 14:09:45,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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