./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/rlim_exit.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/float-benchs/rlim_exit.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d77357c243d95f35d00bc89e7fc23b91d82935f320cfab6cb2f6a7d192f5b03f --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 12:46:22,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 12:46:22,457 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 12:46:22,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 12:46:22,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 12:46:22,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 12:46:22,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 12:46:22,490 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 12:46:22,490 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 12:46:22,490 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 12:46:22,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 12:46:22,491 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 12:46:22,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 12:46:22,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 12:46:22,491 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 12:46:22,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 12:46:22,491 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 12:46:22,492 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 12:46:22,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 12:46:22,492 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 12:46:22,492 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 12:46:22,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 12:46:22,492 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 12:46:22,492 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 12:46:22,492 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 12:46:22,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 12:46:22,492 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 12:46:22,492 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 12:46:22,494 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 12:46:22,494 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 12:46:22,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 12:46:22,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 12:46:22,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:46:22,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 12:46:22,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 12:46:22,495 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 12:46:22,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 12:46:22,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 12:46:22,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 12:46:22,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 12:46:22,495 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 12:46:22,495 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 12:46:22,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 12:46:22,496 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 ! call(reach_error())) ) 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 -> d77357c243d95f35d00bc89e7fc23b91d82935f320cfab6cb2f6a7d192f5b03f [2025-02-05 12:46:22,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 12:46:22,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 12:46:22,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 12:46:22,817 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 12:46:22,817 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 12:46:22,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/rlim_exit.c [2025-02-05 12:46:24,163 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ca1fb5da8/40e87ec0a8534d20be2b68e8092f4a6f/FLAG7a5d504e8 [2025-02-05 12:46:24,408 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 12:46:24,409 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_exit.c [2025-02-05 12:46:24,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ca1fb5da8/40e87ec0a8534d20be2b68e8092f4a6f/FLAG7a5d504e8 [2025-02-05 12:46:24,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ca1fb5da8/40e87ec0a8534d20be2b68e8092f4a6f [2025-02-05 12:46:24,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 12:46:24,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 12:46:24,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 12:46:24,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 12:46:24,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 12:46:24,500 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,501 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2d7d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24, skipping insertion in model container [2025-02-05 12:46:24,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,515 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 12:46:24,649 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_exit.c[446,459] [2025-02-05 12:46:24,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:46:24,674 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 12:46:24,684 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/float-benchs/rlim_exit.c[446,459] [2025-02-05 12:46:24,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 12:46:24,704 INFO L204 MainTranslator]: Completed translation [2025-02-05 12:46:24,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24 WrapperNode [2025-02-05 12:46:24,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 12:46:24,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 12:46:24,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 12:46:24,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 12:46:24,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,730 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2025-02-05 12:46:24,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 12:46:24,732 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 12:46:24,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 12:46:24,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 12:46:24,738 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,739 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,751 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]. [2025-02-05 12:46:24,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,754 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,756 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 12:46:24,757 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 12:46:24,757 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 12:46:24,757 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 12:46:24,758 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (1/1) ... [2025-02-05 12:46:24,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 12:46:24,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:46:24,786 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) [2025-02-05 12:46:24,790 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 [2025-02-05 12:46:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 12:46:24,808 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 12:46:24,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 12:46:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 12:46:24,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 12:46:24,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 12:46:24,864 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 12:46:24,866 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 12:46:24,979 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-02-05 12:46:24,979 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 12:46:24,988 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 12:46:24,989 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 12:46:24,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:46:24 BoogieIcfgContainer [2025-02-05 12:46:24,989 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 12:46:24,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 12:46:24,992 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 12:46:24,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 12:46:24,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 12:46:24" (1/3) ... [2025-02-05 12:46:24,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6406b936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:46:24, skipping insertion in model container [2025-02-05 12:46:24,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 12:46:24" (2/3) ... [2025-02-05 12:46:24,998 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6406b936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 12:46:24, skipping insertion in model container [2025-02-05 12:46:24,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 12:46:24" (3/3) ... [2025-02-05 12:46:24,999 INFO L128 eAbstractionObserver]: Analyzing ICFG rlim_exit.c [2025-02-05 12:46:25,013 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 12:46:25,015 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rlim_exit.c that has 2 procedures, 20 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 12:46:25,060 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 12:46:25,072 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;@5279677, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 12:46:25,072 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 12:46:25,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 12:46:25,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-05 12:46:25,082 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:46:25,082 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-05 12:46:25,083 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:46:25,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:46:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash 46720167, now seen corresponding path program 1 times [2025-02-05 12:46:25,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:46:25,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107596244] [2025-02-05 12:46:25,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:46:25,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:46:25,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-05 12:46:25,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-05 12:46:25,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:46:25,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 12:46:25,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:46:25,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107596244] [2025-02-05 12:46:25,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107596244] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 12:46:25,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 12:46:25,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 12:46:25,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963537956] [2025-02-05 12:46:25,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 12:46:25,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 12:46:25,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:46:25,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 12:46:25,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 12:46:25,256 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-02-05 12:46:25,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:46:25,288 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2025-02-05 12:46:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 12:46:25,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2025-02-05 12:46:25,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:46:25,296 INFO L225 Difference]: With dead ends: 45 [2025-02-05 12:46:25,297 INFO L226 Difference]: Without dead ends: 23 [2025-02-05 12:46:25,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 12:46:25,305 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 12:46:25,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 12:46:25,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-05 12:46:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2025-02-05 12:46:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 12:46:25,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2025-02-05 12:46:25,338 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 5 [2025-02-05 12:46:25,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:46:25,339 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2025-02-05 12:46:25,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-02-05 12:46:25,340 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2025-02-05 12:46:25,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-05 12:46:25,341 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:46:25,341 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 12:46:25,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 12:46:25,342 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:46:25,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:46:25,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1114837127, now seen corresponding path program 1 times [2025-02-05 12:46:25,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:46:25,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535586231] [2025-02-05 12:46:25,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:46:25,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:46:25,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-05 12:46:25,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 12:46:25,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:46:25,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:25,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 12:46:25,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:46:25,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535586231] [2025-02-05 12:46:25,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535586231] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:46:25,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572389322] [2025-02-05 12:46:25,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 12:46:25,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:46:25,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:46:25,494 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) [2025-02-05 12:46:25,495 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 [2025-02-05 12:46:25,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-05 12:46:25,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 12:46:25,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:46:25,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:25,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 12:46:25,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:46:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 12:46:25,630 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:46:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 12:46:25,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572389322] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:46:25,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:46:25,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 12:46:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862582482] [2025-02-05 12:46:25,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:46:25,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 12:46:25,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:46:25,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 12:46:25,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 12:46:25,695 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-05 12:46:25,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:46:25,737 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2025-02-05 12:46:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 12:46:25,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 19 [2025-02-05 12:46:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:46:25,740 INFO L225 Difference]: With dead ends: 41 [2025-02-05 12:46:25,740 INFO L226 Difference]: Without dead ends: 38 [2025-02-05 12:46:25,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 12:46:25,742 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 12:46:25,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 53 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 12:46:25,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-05 12:46:25,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-02-05 12:46:25,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-05 12:46:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2025-02-05 12:46:25,754 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 19 [2025-02-05 12:46:25,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:46:25,754 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2025-02-05 12:46:25,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-05 12:46:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2025-02-05 12:46:25,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-05 12:46:25,756 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:46:25,756 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2025-02-05 12:46:25,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 12:46:25,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:46:25,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:46:25,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:46:25,961 INFO L85 PathProgramCache]: Analyzing trace with hash -76815321, now seen corresponding path program 2 times [2025-02-05 12:46:25,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:46:25,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996986739] [2025-02-05 12:46:25,961 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 12:46:25,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:46:25,985 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-02-05 12:46:26,009 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-02-05 12:46:26,011 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 12:46:26,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-05 12:46:26,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:46:26,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996986739] [2025-02-05 12:46:26,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996986739] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:46:26,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770792853] [2025-02-05 12:46:26,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 12:46:26,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:46:26,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:46:26,226 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) [2025-02-05 12:46:26,229 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 [2025-02-05 12:46:26,281 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-02-05 12:46:26,316 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-02-05 12:46:26,317 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 12:46:26,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:26,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 12:46:26,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:46:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-05 12:46:26,413 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:46:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-05 12:46:26,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770792853] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:46:26,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:46:26,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-05 12:46:26,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937023112] [2025-02-05 12:46:26,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:46:26,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 12:46:26,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:46:26,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 12:46:26,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 12:46:26,575 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 9 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2025-02-05 12:46:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:46:26,676 INFO L93 Difference]: Finished difference Result 83 states and 127 transitions. [2025-02-05 12:46:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 12:46:26,677 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 9 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 61 [2025-02-05 12:46:26,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:46:26,680 INFO L225 Difference]: With dead ends: 83 [2025-02-05 12:46:26,680 INFO L226 Difference]: Without dead ends: 80 [2025-02-05 12:46:26,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 12:46:26,681 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 69 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 12:46:26,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 86 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 12:46:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-05 12:46:26,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2025-02-05 12:46:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 58 states have internal predecessors, (79), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-05 12:46:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 119 transitions. [2025-02-05 12:46:26,702 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 119 transitions. Word has length 61 [2025-02-05 12:46:26,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:46:26,703 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 119 transitions. [2025-02-05 12:46:26,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 9 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2025-02-05 12:46:26,704 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 119 transitions. [2025-02-05 12:46:26,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-02-05 12:46:26,708 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:46:26,708 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1] [2025-02-05 12:46:26,715 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 [2025-02-05 12:46:26,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:46:26,913 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:46:26,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:46:26,913 INFO L85 PathProgramCache]: Analyzing trace with hash -728763545, now seen corresponding path program 3 times [2025-02-05 12:46:26,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:46:26,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616198485] [2025-02-05 12:46:26,914 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 12:46:26,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:46:26,941 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 145 statements into 16 equivalence classes. [2025-02-05 12:46:27,010 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 140 of 145 statements. [2025-02-05 12:46:27,010 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-02-05 12:46:27,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-02-05 12:46:27,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:46:27,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616198485] [2025-02-05 12:46:27,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616198485] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:46:27,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297459240] [2025-02-05 12:46:27,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 12:46:27,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:46:27,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:46:27,444 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) [2025-02-05 12:46:27,446 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 [2025-02-05 12:46:27,515 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 145 statements into 16 equivalence classes. [2025-02-05 12:46:27,572 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 140 of 145 statements. [2025-02-05 12:46:27,572 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-02-05 12:46:27,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:27,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 12:46:27,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:46:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-02-05 12:46:27,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:46:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-02-05 12:46:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297459240] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:46:28,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:46:28,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 12:46:28,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283738514] [2025-02-05 12:46:28,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:46:28,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 12:46:28,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:46:28,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 12:46:28,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 12:46:28,150 INFO L87 Difference]: Start difference. First operand 80 states and 119 transitions. Second operand has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 21 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 21 states have call predecessors, (42), 21 states have call successors, (42) [2025-02-05 12:46:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:46:28,346 INFO L93 Difference]: Finished difference Result 167 states and 265 transitions. [2025-02-05 12:46:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 12:46:28,347 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 21 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 21 states have call predecessors, (42), 21 states have call successors, (42) Word has length 145 [2025-02-05 12:46:28,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:46:28,350 INFO L225 Difference]: With dead ends: 167 [2025-02-05 12:46:28,350 INFO L226 Difference]: Without dead ends: 164 [2025-02-05 12:46:28,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 12:46:28,352 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 171 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 12:46:28,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 159 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 12:46:28,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-02-05 12:46:28,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2025-02-05 12:46:28,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 118 states have (on average 1.38135593220339) internal successors, (163), 118 states have internal predecessors, (163), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-02-05 12:46:28,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 251 transitions. [2025-02-05 12:46:28,380 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 251 transitions. Word has length 145 [2025-02-05 12:46:28,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:46:28,381 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 251 transitions. [2025-02-05 12:46:28,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 21 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 21 states have call predecessors, (42), 21 states have call successors, (42) [2025-02-05 12:46:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 251 transitions. [2025-02-05 12:46:28,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2025-02-05 12:46:28,388 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:46:28,388 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2025-02-05 12:46:28,397 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 [2025-02-05 12:46:28,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:46:28,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:46:28,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:46:28,594 INFO L85 PathProgramCache]: Analyzing trace with hash -54939161, now seen corresponding path program 4 times [2025-02-05 12:46:28,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:46:28,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725418971] [2025-02-05 12:46:28,594 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 12:46:28,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:46:28,622 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 313 statements into 2 equivalence classes. [2025-02-05 12:46:28,703 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 313 of 313 statements. [2025-02-05 12:46:28,703 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 12:46:28,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-05 12:46:29,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:46:29,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725418971] [2025-02-05 12:46:29,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725418971] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:46:29,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65423017] [2025-02-05 12:46:29,700 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 12:46:29,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:46:29,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:46:29,704 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) [2025-02-05 12:46:29,707 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 [2025-02-05 12:46:29,791 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 313 statements into 2 equivalence classes. [2025-02-05 12:46:29,885 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 313 of 313 statements. [2025-02-05 12:46:29,886 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 12:46:29,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:29,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 12:46:29,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:46:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-05 12:46:30,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:46:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-02-05 12:46:31,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65423017] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:46:31,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:46:31,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2025-02-05 12:46:31,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613726200] [2025-02-05 12:46:31,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:46:31,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-05 12:46:31,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:46:31,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-05 12:46:31,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 12:46:31,223 INFO L87 Difference]: Start difference. First operand 164 states and 251 transitions. Second operand has 48 states, 48 states have (on average 3.875) internal successors, (186), 48 states have internal predecessors, (186), 44 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 44 states have call predecessors, (88), 44 states have call successors, (88) [2025-02-05 12:46:31,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:46:31,659 INFO L93 Difference]: Finished difference Result 335 states and 541 transitions. [2025-02-05 12:46:31,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 12:46:31,660 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.875) internal successors, (186), 48 states have internal predecessors, (186), 44 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 44 states have call predecessors, (88), 44 states have call successors, (88) Word has length 313 [2025-02-05 12:46:31,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:46:31,667 INFO L225 Difference]: With dead ends: 335 [2025-02-05 12:46:31,667 INFO L226 Difference]: Without dead ends: 332 [2025-02-05 12:46:31,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 12:46:31,669 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 399 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 12:46:31,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 290 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 12:46:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2025-02-05 12:46:31,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2025-02-05 12:46:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 238 states have (on average 1.3907563025210083) internal successors, (331), 238 states have internal predecessors, (331), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2025-02-05 12:46:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 515 transitions. [2025-02-05 12:46:31,717 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 515 transitions. Word has length 313 [2025-02-05 12:46:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:46:31,717 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 515 transitions. [2025-02-05 12:46:31,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.875) internal successors, (186), 48 states have internal predecessors, (186), 44 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 44 states have call predecessors, (88), 44 states have call successors, (88) [2025-02-05 12:46:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 515 transitions. [2025-02-05 12:46:31,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2025-02-05 12:46:31,730 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:46:31,730 INFO L218 NwaCegarLoop]: trace histogram [92, 92, 92, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1] [2025-02-05 12:46:31,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 12:46:31,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:46:31,934 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:46:31,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:46:31,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1454133529, now seen corresponding path program 5 times [2025-02-05 12:46:31,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:46:31,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051941992] [2025-02-05 12:46:31,935 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 12:46:31,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:46:31,979 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 649 statements into 67 equivalence classes. [2025-02-05 12:46:32,210 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) and asserted 649 of 649 statements. [2025-02-05 12:46:32,210 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2025-02-05 12:46:32,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 23000 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2025-02-05 12:46:35,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:46:35,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051941992] [2025-02-05 12:46:35,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051941992] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:46:35,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554565461] [2025-02-05 12:46:35,237 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 12:46:35,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:46:35,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:46:35,240 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) [2025-02-05 12:46:35,242 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 [2025-02-05 12:46:35,386 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 649 statements into 67 equivalence classes. [2025-02-05 12:46:35,664 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) and asserted 649 of 649 statements. [2025-02-05 12:46:35,664 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2025-02-05 12:46:35,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:35,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-05 12:46:35,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:46:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 23000 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2025-02-05 12:46:36,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:46:38,946 INFO L134 CoverageAnalysis]: Checked inductivity of 23000 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2025-02-05 12:46:38,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554565461] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:46:38,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:46:38,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-02-05 12:46:38,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240483706] [2025-02-05 12:46:38,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:46:38,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-02-05 12:46:38,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:46:38,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-02-05 12:46:38,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-05 12:46:38,957 INFO L87 Difference]: Start difference. First operand 332 states and 515 transitions. Second operand has 96 states, 96 states have (on average 3.9375) internal successors, (378), 96 states have internal predecessors, (378), 92 states have call successors, (184), 1 states have call predecessors, (184), 1 states have return successors, (184), 92 states have call predecessors, (184), 92 states have call successors, (184) [2025-02-05 12:46:40,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:46:40,483 INFO L93 Difference]: Finished difference Result 671 states and 1093 transitions. [2025-02-05 12:46:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-05 12:46:40,484 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.9375) internal successors, (378), 96 states have internal predecessors, (378), 92 states have call successors, (184), 1 states have call predecessors, (184), 1 states have return successors, (184), 92 states have call predecessors, (184), 92 states have call successors, (184) Word has length 649 [2025-02-05 12:46:40,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:46:40,493 INFO L225 Difference]: With dead ends: 671 [2025-02-05 12:46:40,495 INFO L226 Difference]: Without dead ends: 668 [2025-02-05 12:46:40,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1345 GetRequests, 1251 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-05 12:46:40,498 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 1185 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 12:46:40,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 522 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 12:46:40,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2025-02-05 12:46:40,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2025-02-05 12:46:40,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 478 states have (on average 1.395397489539749) internal successors, (667), 478 states have internal predecessors, (667), 188 states have call successors, (188), 1 states have call predecessors, (188), 1 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2025-02-05 12:46:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1043 transitions. [2025-02-05 12:46:40,545 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1043 transitions. Word has length 649 [2025-02-05 12:46:40,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:46:40,546 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 1043 transitions. [2025-02-05 12:46:40,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.9375) internal successors, (378), 96 states have internal predecessors, (378), 92 states have call successors, (184), 1 states have call predecessors, (184), 1 states have return successors, (184), 92 states have call predecessors, (184), 92 states have call successors, (184) [2025-02-05 12:46:40,547 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1043 transitions. [2025-02-05 12:46:40,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1322 [2025-02-05 12:46:40,593 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:46:40,593 INFO L218 NwaCegarLoop]: trace histogram [188, 188, 188, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1] [2025-02-05 12:46:40,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 12:46:40,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:46:40,794 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:46:40,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:46:40,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1503766759, now seen corresponding path program 6 times [2025-02-05 12:46:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:46:40,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999483817] [2025-02-05 12:46:40,796 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 12:46:40,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:46:40,870 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1321 statements into 134 equivalence classes. [2025-02-05 12:46:41,260 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 134 check-sat command(s) and asserted 1321 of 1321 statements. [2025-02-05 12:46:41,261 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 134 check-sat command(s) [2025-02-05 12:46:41,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 96632 backedges. 0 proven. 26320 refuted. 0 times theorem prover too weak. 70312 trivial. 0 not checked. [2025-02-05 12:46:51,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 12:46:51,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999483817] [2025-02-05 12:46:51,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999483817] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 12:46:51,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797132353] [2025-02-05 12:46:51,513 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 12:46:51,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 12:46:51,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 12:46:51,515 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) [2025-02-05 12:46:51,517 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 [2025-02-05 12:46:51,781 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1321 statements into 134 equivalence classes. [2025-02-05 12:46:52,480 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 134 check-sat command(s) and asserted 1321 of 1321 statements. [2025-02-05 12:46:52,480 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 134 check-sat command(s) [2025-02-05 12:46:52,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 12:46:52,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 2475 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-05 12:46:52,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 12:46:53,132 INFO L134 CoverageAnalysis]: Checked inductivity of 96632 backedges. 0 proven. 26320 refuted. 0 times theorem prover too weak. 70312 trivial. 0 not checked. [2025-02-05 12:46:53,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 12:47:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 96632 backedges. 0 proven. 26320 refuted. 0 times theorem prover too weak. 70312 trivial. 0 not checked. [2025-02-05 12:47:02,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797132353] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 12:47:02,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 12:47:02,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-02-05 12:47:02,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513241136] [2025-02-05 12:47:02,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 12:47:02,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-02-05 12:47:02,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 12:47:02,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-02-05 12:47:02,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-05 12:47:02,379 INFO L87 Difference]: Start difference. First operand 668 states and 1043 transitions. Second operand has 193 states, 193 states have (on average 3.9740932642487046) internal successors, (767), 193 states have internal predecessors, (767), 189 states have call successors, (378), 1 states have call predecessors, (378), 1 states have return successors, (378), 189 states have call predecessors, (378), 189 states have call successors, (378) [2025-02-05 12:47:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 12:47:14,140 INFO L93 Difference]: Finished difference Result 1343 states and 2197 transitions. [2025-02-05 12:47:14,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-02-05 12:47:14,141 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 3.9740932642487046) internal successors, (767), 193 states have internal predecessors, (767), 189 states have call successors, (378), 1 states have call predecessors, (378), 1 states have return successors, (378), 189 states have call predecessors, (378), 189 states have call successors, (378) Word has length 1321 [2025-02-05 12:47:14,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 12:47:14,151 INFO L225 Difference]: With dead ends: 1343 [2025-02-05 12:47:14,151 INFO L226 Difference]: Without dead ends: 1340 [2025-02-05 12:47:14,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2737 GetRequests, 2546 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-05 12:47:14,156 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 3252 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3256 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-05 12:47:14,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3256 Valid, 1015 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-05 12:47:14,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2025-02-05 12:47:14,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1340. [2025-02-05 12:47:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 958 states have (on average 1.3977035490605427) internal successors, (1339), 958 states have internal predecessors, (1339), 380 states have call successors, (380), 1 states have call predecessors, (380), 1 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-02-05 12:47:14,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 2099 transitions. [2025-02-05 12:47:14,227 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 2099 transitions. Word has length 1321 [2025-02-05 12:47:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 12:47:14,229 INFO L471 AbstractCegarLoop]: Abstraction has 1340 states and 2099 transitions. [2025-02-05 12:47:14,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 3.9740932642487046) internal successors, (767), 193 states have internal predecessors, (767), 189 states have call successors, (378), 1 states have call predecessors, (378), 1 states have return successors, (378), 189 states have call predecessors, (378), 189 states have call successors, (378) [2025-02-05 12:47:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 2099 transitions. [2025-02-05 12:47:14,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2666 [2025-02-05 12:47:14,265 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 12:47:14,266 INFO L218 NwaCegarLoop]: trace histogram [380, 380, 380, 190, 190, 190, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1] [2025-02-05 12:47:14,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 12:47:14,467 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,SelfDestructingSolverStorable6 [2025-02-05 12:47:14,467 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 12:47:14,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 12:47:14,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1185258727, now seen corresponding path program 7 times [2025-02-05 12:47:14,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 12:47:14,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420180700] [2025-02-05 12:47:14,468 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 12:47:14,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 12:47:14,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2665 statements into 1 equivalence classes. [2025-02-05 12:47:14,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2665 of 2665 statements. [2025-02-05 12:47:14,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 12:47:14,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat