./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-1.i --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/pthread-theta/unwind2-1.i -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 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:15:56,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:15:56,534 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 14:15:56,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:15:56,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:15:56,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:15:56,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:15:56,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:15:56,554 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:15:56,554 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:15:56,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 14:15:56,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 14:15:56,554 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:15:56,554 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:15:56,554 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:15:56,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:15:56,555 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:15:56,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:15:56,557 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 14:15:56,557 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 14:15:56,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:15:56,557 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:15:56,557 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 14:15:56,557 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 14:15:56,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 14:15:56,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:15:56,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 14:15:56,557 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 14:15:56,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 14:15:56,557 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 14:15:56,558 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 14:15:56,558 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 -> 84506b1a5f2f1a1be74252915eb3882c15865a3a673842f14f5796dbb89eb736 [2025-02-08 14:15:56,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:15:56,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:15:56,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:15:56,976 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:15:56,977 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:15:56,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-1.i [2025-02-08 14:15:58,162 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/128b3c638/ad47508b166c4985ba9026645bc0870f/FLAGf4e6842a1 [2025-02-08 14:15:58,442 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:15:58,443 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-1.i [2025-02-08 14:15:58,455 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/128b3c638/ad47508b166c4985ba9026645bc0870f/FLAGf4e6842a1 [2025-02-08 14:15:58,468 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/128b3c638/ad47508b166c4985ba9026645bc0870f [2025-02-08 14:15:58,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:15:58,471 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:15:58,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:15:58,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:15:58,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:15:58,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc8f6f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58, skipping insertion in model container [2025-02-08 14:15:58,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,505 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:15:58,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:15:58,743 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:15:58,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:15:58,828 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:15:58,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58 WrapperNode [2025-02-08 14:15:58,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:15:58,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:15:58,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:15:58,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:15:58,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,856 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,873 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 85 [2025-02-08 14:15:58,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:15:58,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:15:58,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:15:58,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:15:58,880 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,882 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,895 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 14:15:58,895 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,896 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,899 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,900 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:15:58,904 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:15:58,904 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:15:58,904 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:15:58,905 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (1/1) ... [2025-02-08 14:15:58,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 14:15:58,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:15:58,937 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 14:15:58,943 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 14:15:58,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 14:15:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-08 14:15:58,966 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-08 14:15:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-08 14:15:58,966 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-08 14:15:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 14:15:58,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:15:58,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:15:58,967 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 14:15:59,065 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:15:59,067 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:15:59,265 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 14:15:59,265 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:15:59,369 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:15:59,371 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:15:59,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:15:59 BoogieIcfgContainer [2025-02-08 14:15:59,372 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:15:59,374 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 14:15:59,374 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 14:15:59,378 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 14:15:59,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 02:15:58" (1/3) ... [2025-02-08 14:15:59,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7f9a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:15:59, skipping insertion in model container [2025-02-08 14:15:59,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:15:58" (2/3) ... [2025-02-08 14:15:59,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7f9a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 02:15:59, skipping insertion in model container [2025-02-08 14:15:59,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:15:59" (3/3) ... [2025-02-08 14:15:59,381 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-1.i [2025-02-08 14:15:59,394 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 14:15:59,396 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-1.i that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-02-08 14:15:59,397 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 14:15:59,447 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 14:15:59,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2025-02-08 14:15:59,498 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-02-08 14:15:59,502 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:15:59,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-08 14:15:59,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2025-02-08 14:15:59,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2025-02-08 14:15:59,513 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 14:15:59,521 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;@58c70546, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 14:15:59,522 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-02-08 14:15:59,526 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 14:15:59,526 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-02-08 14:15:59,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 14:15:59,528 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:59,529 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:15:59,530 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:15:59,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1721056946, now seen corresponding path program 1 times [2025-02-08 14:15:59,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:59,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645347958] [2025-02-08 14:15:59,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:59,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:59,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:15:59,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:15:59,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:59,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:59,730 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 14:15:59,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:59,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645347958] [2025-02-08 14:15:59,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645347958] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:59,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:59,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:15:59,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040765569] [2025-02-08 14:15:59,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:59,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:15:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:59,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:15:59,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:15:59,772 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:15:59,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 14:15:59,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:59,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:15:59,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:15:59,870 INFO L124 PetriNetUnfolderBase]: 165/354 cut-off events. [2025-02-08 14:15:59,870 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2025-02-08 14:15:59,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 354 events. 165/354 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1569 event pairs, 134 based on Foata normal form. 13/296 useless extension candidates. Maximal degree in co-relation 609. Up to 282 conditions per place. [2025-02-08 14:15:59,876 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 19 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2025-02-08 14:15:59,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 103 flow [2025-02-08 14:15:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:15:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:15:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2025-02-08 14:15:59,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 14:15:59,890 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 48 transitions. [2025-02-08 14:15:59,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 103 flow [2025-02-08 14:15:59,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 98 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 14:15:59,901 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 60 flow [2025-02-08 14:15:59,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2025-02-08 14:15:59,906 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2025-02-08 14:15:59,908 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 60 flow [2025-02-08 14:15:59,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 14:15:59,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:15:59,912 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:15:59,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 14:15:59,912 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:15:59,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:15:59,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1813157579, now seen corresponding path program 1 times [2025-02-08 14:15:59,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:15:59,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276070099] [2025-02-08 14:15:59,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:15:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:15:59,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:15:59,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:15:59,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:15:59,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:15:59,967 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 14:15:59,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:15:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276070099] [2025-02-08 14:15:59,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276070099] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:15:59,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:15:59,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 14:15:59,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309732760] [2025-02-08 14:15:59,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:15:59,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 14:15:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:15:59,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:15:59,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:15:59,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:15:59,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 14:15:59,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:15:59,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:15:59,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:00,048 INFO L124 PetriNetUnfolderBase]: 146/316 cut-off events. [2025-02-08 14:16:00,048 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-08 14:16:00,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 316 events. 146/316 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1308 event pairs, 117 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 577. Up to 250 conditions per place. [2025-02-08 14:16:00,051 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 18 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2025-02-08 14:16:00,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 96 flow [2025-02-08 14:16:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:16:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 14:16:00,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2025-02-08 14:16:00,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2025-02-08 14:16:00,052 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 3 states and 47 transitions. [2025-02-08 14:16:00,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 96 flow [2025-02-08 14:16:00,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:00,053 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 59 flow [2025-02-08 14:16:00,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2025-02-08 14:16:00,054 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2025-02-08 14:16:00,054 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 59 flow [2025-02-08 14:16:00,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 14:16:00,054 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:00,054 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:00,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 14:16:00,054 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:16:00,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:00,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1800890637, now seen corresponding path program 1 times [2025-02-08 14:16:00,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:00,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350586813] [2025-02-08 14:16:00,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:00,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:00,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:16:00,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:16:00,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:00,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:00,139 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 14:16:00,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:00,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350586813] [2025-02-08 14:16:00,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350586813] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:00,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:00,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:00,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100844443] [2025-02-08 14:16:00,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:00,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:16:00,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:00,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:16:00,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:16:00,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:16:00,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 14:16:00,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:00,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:16:00,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:00,301 INFO L124 PetriNetUnfolderBase]: 268/532 cut-off events. [2025-02-08 14:16:00,302 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 14:16:00,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 532 events. 268/532 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2351 event pairs, 159 based on Foata normal form. 16/457 useless extension candidates. Maximal degree in co-relation 1012. Up to 329 conditions per place. [2025-02-08 14:16:00,308 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 42 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2025-02-08 14:16:00,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 50 transitions, 202 flow [2025-02-08 14:16:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:16:00,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:16:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-02-08 14:16:00,312 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2025-02-08 14:16:00,313 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 59 flow. Second operand 4 states and 83 transitions. [2025-02-08 14:16:00,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 50 transitions, 202 flow [2025-02-08 14:16:00,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 50 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:00,316 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 80 flow [2025-02-08 14:16:00,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2025-02-08 14:16:00,318 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-02-08 14:16:00,318 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 80 flow [2025-02-08 14:16:00,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 14:16:00,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:00,318 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:00,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 14:16:00,319 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:16:00,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:00,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1896282033, now seen corresponding path program 1 times [2025-02-08 14:16:00,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:00,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249352452] [2025-02-08 14:16:00,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:00,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:00,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:16:00,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:16:00,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:00,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:00,434 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 14:16:00,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:00,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249352452] [2025-02-08 14:16:00,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249352452] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:00,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133015] [2025-02-08 14:16:00,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:00,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:00,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:00,440 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 14:16:00,441 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 14:16:00,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:16:00,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:16:00,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:00,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:00,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 14:16:00,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:00,624 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 14:16:00,624 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:16:00,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133015] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:00,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:16:00,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 12 [2025-02-08 14:16:00,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744817202] [2025-02-08 14:16:00,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:00,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 14:16:00,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:00,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 14:16:00,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:16:00,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-08 14:16:00,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 80 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 14:16:00,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:00,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-08 14:16:00,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:01,017 INFO L124 PetriNetUnfolderBase]: 359/723 cut-off events. [2025-02-08 14:16:01,017 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-02-08 14:16:01,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1561 conditions, 723 events. 359/723 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3655 event pairs, 58 based on Foata normal form. 24/668 useless extension candidates. Maximal degree in co-relation 1552. Up to 220 conditions per place. [2025-02-08 14:16:01,021 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 77 selfloop transitions, 14 changer transitions 8/104 dead transitions. [2025-02-08 14:16:01,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 104 transitions, 459 flow [2025-02-08 14:16:01,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 14:16:01,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-08 14:16:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2025-02-08 14:16:01,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2025-02-08 14:16:01,023 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 80 flow. Second operand 12 states and 183 transitions. [2025-02-08 14:16:01,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 104 transitions, 459 flow [2025-02-08 14:16:01,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 104 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:01,028 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 165 flow [2025-02-08 14:16:01,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2025-02-08 14:16:01,029 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2025-02-08 14:16:01,029 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 165 flow [2025-02-08 14:16:01,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 14:16:01,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:01,029 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:01,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 14:16:01,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:01,230 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:16:01,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1602946246, now seen corresponding path program 1 times [2025-02-08 14:16:01,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:01,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572134968] [2025-02-08 14:16:01,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:01,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:01,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:16:01,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:16:01,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:01,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:01,267 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 14:16:01,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:01,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572134968] [2025-02-08 14:16:01,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572134968] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:01,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:16:01,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:16:01,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376300983] [2025-02-08 14:16:01,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:01,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 14:16:01,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:01,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:16:01,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:16:01,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:16:01,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 14:16:01,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:01,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:16:01,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:01,403 INFO L124 PetriNetUnfolderBase]: 645/1276 cut-off events. [2025-02-08 14:16:01,404 INFO L125 PetriNetUnfolderBase]: For 1039/1047 co-relation queries the response was YES. [2025-02-08 14:16:01,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 1276 events. 645/1276 cut-off events. For 1039/1047 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7060 event pairs, 365 based on Foata normal form. 46/1178 useless extension candidates. Maximal degree in co-relation 3038. Up to 807 conditions per place. [2025-02-08 14:16:01,411 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 64 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2025-02-08 14:16:01,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 72 transitions, 479 flow [2025-02-08 14:16:01,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:16:01,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 14:16:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-02-08 14:16:01,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-02-08 14:16:01,415 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 165 flow. Second operand 4 states and 78 transitions. [2025-02-08 14:16:01,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 72 transitions, 479 flow [2025-02-08 14:16:01,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 72 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:01,422 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 186 flow [2025-02-08 14:16:01,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2025-02-08 14:16:01,423 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2025-02-08 14:16:01,424 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 186 flow [2025-02-08 14:16:01,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 14:16:01,425 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:01,425 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:01,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 14:16:01,425 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:16:01,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:01,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1925014251, now seen corresponding path program 1 times [2025-02-08 14:16:01,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:01,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496232964] [2025-02-08 14:16:01,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:01,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:01,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:16:01,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:16:01,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:01,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:01,492 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 14:16:01,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:01,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496232964] [2025-02-08 14:16:01,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496232964] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:01,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667772220] [2025-02-08 14:16:01,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:01,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:01,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:01,495 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 14:16:01,497 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 14:16:01,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:16:01,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:16:01,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:01,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:01,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:16:01,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:01,573 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 14:16:01,574 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:16:01,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667772220] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:01,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:16:01,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:16:01,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715249603] [2025-02-08 14:16:01,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:01,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:16:01,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:01,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:16:01,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:16:01,587 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:16:01,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 14:16:01,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:01,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:16:01,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:01,777 INFO L124 PetriNetUnfolderBase]: 583/1136 cut-off events. [2025-02-08 14:16:01,778 INFO L125 PetriNetUnfolderBase]: For 1161/1185 co-relation queries the response was YES. [2025-02-08 14:16:01,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3100 conditions, 1136 events. 583/1136 cut-off events. For 1161/1185 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6029 event pairs, 95 based on Foata normal form. 46/1130 useless extension candidates. Maximal degree in co-relation 3084. Up to 262 conditions per place. [2025-02-08 14:16:01,784 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 91 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2025-02-08 14:16:01,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 101 transitions, 724 flow [2025-02-08 14:16:01,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:16:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:16:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2025-02-08 14:16:01,785 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-02-08 14:16:01,785 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 186 flow. Second operand 6 states and 110 transitions. [2025-02-08 14:16:01,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 101 transitions, 724 flow [2025-02-08 14:16:01,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 101 transitions, 722 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 14:16:01,795 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 190 flow [2025-02-08 14:16:01,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2025-02-08 14:16:01,797 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2025-02-08 14:16:01,797 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 190 flow [2025-02-08 14:16:01,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 14:16:01,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:01,798 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:01,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 14:16:02,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:02,001 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:16:02,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:02,002 INFO L85 PathProgramCache]: Analyzing trace with hash 454100566, now seen corresponding path program 1 times [2025-02-08 14:16:02,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:02,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167690503] [2025-02-08 14:16:02,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:02,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:02,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:16:02,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:16:02,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:02,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:02,081 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 14:16:02,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:02,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167690503] [2025-02-08 14:16:02,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167690503] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:02,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710531704] [2025-02-08 14:16:02,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:02,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:02,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:02,084 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 14:16:02,086 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 14:16:02,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:16:02,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:16:02,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:02,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:02,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:16:02,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:02,151 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 14:16:02,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:16:02,192 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 14:16:02,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710531704] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:16:02,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:16:02,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:16:02,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161991221] [2025-02-08 14:16:02,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:16:02,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:16:02,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:02,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:16:02,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:16:02,210 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:16:02,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 190 flow. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:02,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:02,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:16:02,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:02,534 INFO L124 PetriNetUnfolderBase]: 1141/2256 cut-off events. [2025-02-08 14:16:02,534 INFO L125 PetriNetUnfolderBase]: For 2979/3031 co-relation queries the response was YES. [2025-02-08 14:16:02,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6418 conditions, 2256 events. 1141/2256 cut-off events. For 2979/3031 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 13041 event pairs, 311 based on Foata normal form. 138/2388 useless extension candidates. Maximal degree in co-relation 6402. Up to 699 conditions per place. [2025-02-08 14:16:02,550 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 156 selfloop transitions, 9 changer transitions 0/170 dead transitions. [2025-02-08 14:16:02,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 170 transitions, 1260 flow [2025-02-08 14:16:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:16:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:16:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2025-02-08 14:16:02,552 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.590625 [2025-02-08 14:16:02,553 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 190 flow. Second operand 10 states and 189 transitions. [2025-02-08 14:16:02,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 170 transitions, 1260 flow [2025-02-08 14:16:02,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 170 transitions, 1245 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-08 14:16:02,563 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 245 flow [2025-02-08 14:16:02,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=245, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2025-02-08 14:16:02,564 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 31 predicate places. [2025-02-08 14:16:02,564 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 245 flow [2025-02-08 14:16:02,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:02,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:02,564 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:02,572 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 14:16:02,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:02,765 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:16:02,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:02,765 INFO L85 PathProgramCache]: Analyzing trace with hash 37362360, now seen corresponding path program 1 times [2025-02-08 14:16:02,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:02,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338447894] [2025-02-08 14:16:02,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:02,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:02,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:16:02,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:16:02,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:02,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:02,834 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 14:16:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338447894] [2025-02-08 14:16:02,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338447894] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:02,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054032531] [2025-02-08 14:16:02,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:02,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:02,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:02,837 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 14:16:02,839 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 14:16:02,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 14:16:02,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 14:16:02,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:02,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:02,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:16:02,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:02,912 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 14:16:02,912 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:16:02,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054032531] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:02,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:16:02,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 14:16:02,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28460771] [2025-02-08 14:16:02,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:02,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 14:16:02,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:02,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:16:02,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 14:16:02,920 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:16:02,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 14:16:02,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:02,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:16:02,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:03,172 INFO L124 PetriNetUnfolderBase]: 1127/2193 cut-off events. [2025-02-08 14:16:03,172 INFO L125 PetriNetUnfolderBase]: For 3576/3592 co-relation queries the response was YES. [2025-02-08 14:16:03,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6715 conditions, 2193 events. 1127/2193 cut-off events. For 3576/3592 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13047 event pairs, 210 based on Foata normal form. 32/2190 useless extension candidates. Maximal degree in co-relation 6697. Up to 652 conditions per place. [2025-02-08 14:16:03,186 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 97 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2025-02-08 14:16:03,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 830 flow [2025-02-08 14:16:03,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:16:03,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 14:16:03,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2025-02-08 14:16:03,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.59375 [2025-02-08 14:16:03,187 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 245 flow. Second operand 6 states and 114 transitions. [2025-02-08 14:16:03,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 830 flow [2025-02-08 14:16:03,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 111 transitions, 780 flow, removed 15 selfloop flow, removed 2 redundant places. [2025-02-08 14:16:03,202 INFO L231 Difference]: Finished difference. Result has 66 places, 45 transitions, 251 flow [2025-02-08 14:16:03,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=251, PETRI_PLACES=66, PETRI_TRANSITIONS=45} [2025-02-08 14:16:03,203 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2025-02-08 14:16:03,203 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 45 transitions, 251 flow [2025-02-08 14:16:03,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 14:16:03,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:03,203 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:03,211 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 14:16:03,404 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,SelfDestructingSolverStorable7 [2025-02-08 14:16:03,405 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:16:03,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:03,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1158233350, now seen corresponding path program 1 times [2025-02-08 14:16:03,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:03,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998453619] [2025-02-08 14:16:03,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:03,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:03,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:16:03,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:16:03,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:03,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:03,462 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 14:16:03,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:03,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998453619] [2025-02-08 14:16:03,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998453619] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:03,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486586255] [2025-02-08 14:16:03,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:03,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:03,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:03,464 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 14:16:03,466 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 14:16:03,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:16:03,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:16:03,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:03,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:03,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 14:16:03,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:03,534 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 14:16:03,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:16:03,575 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 14:16:03,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486586255] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:16:03,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:16:03,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-02-08 14:16:03,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627777705] [2025-02-08 14:16:03,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:16:03,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:16:03,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:03,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:16:03,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:16:03,586 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-02-08 14:16:03,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 45 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:03,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:03,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-02-08 14:16:03,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:04,074 INFO L124 PetriNetUnfolderBase]: 1607/3115 cut-off events. [2025-02-08 14:16:04,074 INFO L125 PetriNetUnfolderBase]: For 5451/5482 co-relation queries the response was YES. [2025-02-08 14:16:04,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9667 conditions, 3115 events. 1607/3115 cut-off events. For 5451/5482 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19068 event pairs, 409 based on Foata normal form. 96/3208 useless extension candidates. Maximal degree in co-relation 9648. Up to 692 conditions per place. [2025-02-08 14:16:04,098 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 157 selfloop transitions, 14 changer transitions 0/175 dead transitions. [2025-02-08 14:16:04,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 175 transitions, 1291 flow [2025-02-08 14:16:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:16:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:16:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2025-02-08 14:16:04,101 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.575 [2025-02-08 14:16:04,101 INFO L175 Difference]: Start difference. First operand has 66 places, 45 transitions, 251 flow. Second operand 10 states and 184 transitions. [2025-02-08 14:16:04,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 175 transitions, 1291 flow [2025-02-08 14:16:04,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 175 transitions, 1265 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-08 14:16:04,118 INFO L231 Difference]: Finished difference. Result has 74 places, 51 transitions, 317 flow [2025-02-08 14:16:04,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=317, PETRI_PLACES=74, PETRI_TRANSITIONS=51} [2025-02-08 14:16:04,119 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2025-02-08 14:16:04,120 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 51 transitions, 317 flow [2025-02-08 14:16:04,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.833333333333334) internal successors, (130), 12 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:16:04,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:04,120 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:04,127 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 14:16:04,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:04,321 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:16:04,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:04,322 INFO L85 PathProgramCache]: Analyzing trace with hash 71184529, now seen corresponding path program 2 times [2025-02-08 14:16:04,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:04,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527924764] [2025-02-08 14:16:04,322 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:16:04,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:04,327 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-08 14:16:04,330 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 24 statements. [2025-02-08 14:16:04,332 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:16:04,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:04,380 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 14:16:04,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527924764] [2025-02-08 14:16:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527924764] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157920899] [2025-02-08 14:16:04,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:16:04,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:04,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:04,382 INFO L229 MonitoredProcess]: Starting monitored process 7 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 14:16:04,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-08 14:16:04,417 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-08 14:16:04,423 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 24 statements. [2025-02-08 14:16:04,424 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:16:04,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:04,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 14:16:04,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:04,461 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 14:16:04,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:16:04,524 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 14:16:04,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157920899] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:16:04,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:16:04,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-08 14:16:04,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188230563] [2025-02-08 14:16:04,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:16:04,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:16:04,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:04,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:16:04,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:16:04,554 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-08 14:16:04,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 51 transitions, 317 flow. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 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 14:16:04,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:04,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-08 14:16:04,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:04,975 INFO L124 PetriNetUnfolderBase]: 1827/3557 cut-off events. [2025-02-08 14:16:04,975 INFO L125 PetriNetUnfolderBase]: For 7626/7654 co-relation queries the response was YES. [2025-02-08 14:16:04,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11149 conditions, 3557 events. 1827/3557 cut-off events. For 7626/7654 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22461 event pairs, 139 based on Foata normal form. 67/3622 useless extension candidates. Maximal degree in co-relation 11128. Up to 1303 conditions per place. [2025-02-08 14:16:04,995 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 18 changer transitions 48/139 dead transitions. [2025-02-08 14:16:04,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 139 transitions, 1145 flow [2025-02-08 14:16:04,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 14:16:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 14:16:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2025-02-08 14:16:04,997 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.459375 [2025-02-08 14:16:04,997 INFO L175 Difference]: Start difference. First operand has 74 places, 51 transitions, 317 flow. Second operand 10 states and 147 transitions. [2025-02-08 14:16:04,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 139 transitions, 1145 flow [2025-02-08 14:16:05,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 139 transitions, 1054 flow, removed 27 selfloop flow, removed 2 redundant places. [2025-02-08 14:16:05,020 INFO L231 Difference]: Finished difference. Result has 87 places, 60 transitions, 457 flow [2025-02-08 14:16:05,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=457, PETRI_PLACES=87, PETRI_TRANSITIONS=60} [2025-02-08 14:16:05,021 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 54 predicate places. [2025-02-08 14:16:05,021 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 60 transitions, 457 flow [2025-02-08 14:16:05,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 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 14:16:05,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:05,021 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:05,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 14:16:05,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-08 14:16:05,226 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:16:05,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash -119584378, now seen corresponding path program 2 times [2025-02-08 14:16:05,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:05,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208835264] [2025-02-08 14:16:05,227 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:16:05,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:05,231 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-08 14:16:05,233 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 26 statements. [2025-02-08 14:16:05,233 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:16:05,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:05,279 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 14:16:05,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208835264] [2025-02-08 14:16:05,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208835264] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:05,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173259003] [2025-02-08 14:16:05,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:16:05,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:05,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:05,282 INFO L229 MonitoredProcess]: Starting monitored process 8 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 14:16:05,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-08 14:16:05,316 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-08 14:16:05,323 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 26 statements. [2025-02-08 14:16:05,323 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:16:05,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:05,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 14:16:05,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:05,354 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 14:16:05,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 14:16:05,420 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 14:16:05,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173259003] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 14:16:05,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 14:16:05,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-08 14:16:05,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139132429] [2025-02-08 14:16:05,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 14:16:05,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 14:16:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:05,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 14:16:05,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:16:05,444 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-08 14:16:05,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 60 transitions, 457 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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 14:16:05,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:05,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-08 14:16:05,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:05,730 INFO L124 PetriNetUnfolderBase]: 1187/2350 cut-off events. [2025-02-08 14:16:05,730 INFO L125 PetriNetUnfolderBase]: For 7677/7680 co-relation queries the response was YES. [2025-02-08 14:16:05,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8652 conditions, 2350 events. 1187/2350 cut-off events. For 7677/7680 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 13433 event pairs, 127 based on Foata normal form. 34/2382 useless extension candidates. Maximal degree in co-relation 8623. Up to 992 conditions per place. [2025-02-08 14:16:05,748 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 28 selfloop transitions, 3 changer transitions 64/99 dead transitions. [2025-02-08 14:16:05,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 99 transitions, 931 flow [2025-02-08 14:16:05,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 14:16:05,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 14:16:05,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2025-02-08 14:16:05,749 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42578125 [2025-02-08 14:16:05,749 INFO L175 Difference]: Start difference. First operand has 87 places, 60 transitions, 457 flow. Second operand 8 states and 109 transitions. [2025-02-08 14:16:05,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 99 transitions, 931 flow [2025-02-08 14:16:05,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 99 transitions, 890 flow, removed 14 selfloop flow, removed 8 redundant places. [2025-02-08 14:16:05,765 INFO L231 Difference]: Finished difference. Result has 80 places, 32 transitions, 199 flow [2025-02-08 14:16:05,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=199, PETRI_PLACES=80, PETRI_TRANSITIONS=32} [2025-02-08 14:16:05,766 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2025-02-08 14:16:05,766 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 32 transitions, 199 flow [2025-02-08 14:16:05,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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 14:16:05,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 14:16:05,767 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:05,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 14:16:05,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:05,967 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-02-08 14:16:05,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:16:05,968 INFO L85 PathProgramCache]: Analyzing trace with hash -769120348, now seen corresponding path program 1 times [2025-02-08 14:16:05,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:16:05,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343092732] [2025-02-08 14:16:05,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:05,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:16:05,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 14:16:05,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 14:16:05,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:05,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 14:16:06,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:16:06,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343092732] [2025-02-08 14:16:06,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343092732] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 14:16:06,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648567038] [2025-02-08 14:16:06,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:16:06,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:06,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:16:06,061 INFO L229 MonitoredProcess]: Starting monitored process 9 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 14:16:06,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-08 14:16:06,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-08 14:16:06,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 14:16:06,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:16:06,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:16:06,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 14:16:06,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:16:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-08 14:16:06,164 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 14:16:06,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648567038] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:16:06,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 14:16:06,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2025-02-08 14:16:06,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59354984] [2025-02-08 14:16:06,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:16:06,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 14:16:06,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:16:06,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 14:16:06,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-08 14:16:06,182 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-02-08 14:16:06,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 32 transitions, 199 flow. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 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 14:16:06,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 14:16:06,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-02-08 14:16:06,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 14:16:06,299 INFO L124 PetriNetUnfolderBase]: 75/169 cut-off events. [2025-02-08 14:16:06,299 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2025-02-08 14:16:06,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 169 events. 75/169 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 535 event pairs, 2 based on Foata normal form. 14/182 useless extension candidates. Maximal degree in co-relation 543. Up to 37 conditions per place. [2025-02-08 14:16:06,300 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2025-02-08 14:16:06,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 48 transitions, 310 flow [2025-02-08 14:16:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 14:16:06,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 14:16:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2025-02-08 14:16:06,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2025-02-08 14:16:06,301 INFO L175 Difference]: Start difference. First operand has 80 places, 32 transitions, 199 flow. Second operand 9 states and 109 transitions. [2025-02-08 14:16:06,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 48 transitions, 310 flow [2025-02-08 14:16:06,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 237 flow, removed 3 selfloop flow, removed 20 redundant places. [2025-02-08 14:16:06,302 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2025-02-08 14:16:06,302 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2025-02-08 14:16:06,303 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2025-02-08 14:16:06,303 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2025-02-08 14:16:06,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 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 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2025-02-08 14:16:06,305 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2025-02-08 14:16:06,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 14:16:06,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 14:16:06,506 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:16:06,510 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 14:16:06,510 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 14:16:06,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 02:16:06 BasicIcfg [2025-02-08 14:16:06,515 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 14:16:06,516 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:16:06,516 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:16:06,516 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:16:06,516 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:15:59" (3/4) ... [2025-02-08 14:16:06,517 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 14:16:06,519 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f1 [2025-02-08 14:16:06,519 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f2 [2025-02-08 14:16:06,521 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2025-02-08 14:16:06,522 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-02-08 14:16:06,522 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-02-08 14:16:06,522 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 14:16:06,569 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:16:06,569 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 14:16:06,569 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:16:06,570 INFO L158 Benchmark]: Toolchain (without parser) took 8098.48ms. Allocated memory was 167.8MB in the beginning and 343.9MB in the end (delta: 176.2MB). Free memory was 122.3MB in the beginning and 257.2MB in the end (delta: -135.0MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2025-02-08 14:16:06,570 INFO L158 Benchmark]: CDTParser took 1.02ms. Allocated memory is still 201.3MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:16:06,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.67ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 102.2MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 14:16:06,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.30ms. Allocated memory is still 167.8MB. Free memory was 102.2MB in the beginning and 100.5MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:16:06,570 INFO L158 Benchmark]: Boogie Preprocessor took 28.54ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 99.5MB in the end (delta: 958.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:16:06,570 INFO L158 Benchmark]: IcfgBuilder took 467.83ms. Allocated memory is still 167.8MB. Free memory was 99.5MB in the beginning and 76.3MB in the end (delta: 23.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 14:16:06,570 INFO L158 Benchmark]: TraceAbstraction took 7141.72ms. Allocated memory was 167.8MB in the beginning and 343.9MB in the end (delta: 176.2MB). Free memory was 76.3MB in the beginning and 265.6MB in the end (delta: -189.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:16:06,571 INFO L158 Benchmark]: Witness Printer took 53.14ms. Allocated memory is still 343.9MB. Free memory was 265.6MB in the beginning and 257.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:16:06,571 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02ms. Allocated memory is still 201.3MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.67ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 102.2MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.30ms. Allocated memory is still 167.8MB. Free memory was 102.2MB in the beginning and 100.5MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.54ms. Allocated memory is still 167.8MB. Free memory was 100.5MB in the beginning and 99.5MB in the end (delta: 958.3kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 467.83ms. Allocated memory is still 167.8MB. Free memory was 99.5MB in the beginning and 76.3MB in the end (delta: 23.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7141.72ms. Allocated memory was 167.8MB in the beginning and 343.9MB in the end (delta: 176.2MB). Free memory was 76.3MB in the beginning and 265.6MB in the end (delta: -189.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 53.14ms. Allocated memory is still 343.9MB. Free memory was 265.6MB in the beginning and 257.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: 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, 55 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: 7.0s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 957 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 907 mSDsluCounter, 380 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 344 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1919 IncrementalHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 36 mSDtfsCounter, 1919 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred in iteration=10, InterpolantAutomatonStates: 85, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 327 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 385 ConstructedInterpolants, 0 QuantifiedInterpolants, 951 SizeOfPredicates, 32 NumberOfNonLiveVariables, 642 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 180/270 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 14:16:06,584 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