./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i --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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i -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 d1e8bbf11bf9730dd392ee96f7f9b3c02d5fdcc2b789ed2be8b6a41d75b98db6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 22:50:04,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 22:50:04,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 22:50:04,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 22:50:04,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 22:50:04,426 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 22:50:04,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 22:50:04,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 22:50:04,427 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 22:50:04,427 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 22:50:04,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 22:50:04,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 22:50:04,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 22:50:04,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 22:50:04,428 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 22:50:04,428 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 22:50:04,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 22:50:04,429 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 22:50:04,429 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 22:50:04,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 22:50:04,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 22:50:04,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 22:50:04,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 22:50:04,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 22:50:04,429 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 22:50:04,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 22:50:04,430 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 22:50:04,430 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 22:50:04,430 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 22:50:04,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 22:50:04,430 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 22:50:04,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 22:50:04,430 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 22:50:04,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 22:50:04,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 22:50:04,431 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 22:50:04,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 22:50:04,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 22:50:04,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 22:50:04,431 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 22:50:04,431 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 22:50:04,431 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 22:50:04,431 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 22:50:04,432 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 -> d1e8bbf11bf9730dd392ee96f7f9b3c02d5fdcc2b789ed2be8b6a41d75b98db6 [2025-02-05 22:50:04,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 22:50:04,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 22:50:04,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 22:50:04,655 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 22:50:04,656 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 22:50:04,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i [2025-02-05 22:50:05,807 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b3861483b/6bf8bd4bb6fe420da1cc7cbb432d56ce/FLAG6b9d1df4d [2025-02-05 22:50:06,082 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 22:50:06,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i [2025-02-05 22:50:06,096 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b3861483b/6bf8bd4bb6fe420da1cc7cbb432d56ce/FLAG6b9d1df4d [2025-02-05 22:50:06,394 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b3861483b/6bf8bd4bb6fe420da1cc7cbb432d56ce [2025-02-05 22:50:06,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 22:50:06,398 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 22:50:06,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 22:50:06,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 22:50:06,402 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 22:50:06,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef3eaba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06, skipping insertion in model container [2025-02-05 22:50:06,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,422 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 22:50:06,530 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i[918,931] [2025-02-05 22:50:06,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 22:50:06,602 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 22:50:06,609 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i[918,931] [2025-02-05 22:50:06,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 22:50:06,657 INFO L204 MainTranslator]: Completed translation [2025-02-05 22:50:06,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06 WrapperNode [2025-02-05 22:50:06,657 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 22:50:06,658 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 22:50:06,658 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 22:50:06,658 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 22:50:06,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,718 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 229 [2025-02-05 22:50:06,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 22:50:06,719 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 22:50:06,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 22:50:06,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 22:50:06,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,755 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 22:50:06,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,769 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 22:50:06,789 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 22:50:06,789 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 22:50:06,789 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 22:50:06,790 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (1/1) ... [2025-02-05 22:50:06,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 22:50:06,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 22:50:06,816 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 22:50:06,822 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 22:50:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 22:50:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 22:50:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 22:50:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 22:50:06,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 22:50:06,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 22:50:06,909 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 22:50:06,910 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 22:50:07,371 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-02-05 22:50:07,371 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 22:50:07,388 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 22:50:07,388 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 22:50:07,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:50:07 BoogieIcfgContainer [2025-02-05 22:50:07,388 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 22:50:07,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 22:50:07,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 22:50:07,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 22:50:07,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:50:06" (1/3) ... [2025-02-05 22:50:07,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c849fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:50:07, skipping insertion in model container [2025-02-05 22:50:07,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:06" (2/3) ... [2025-02-05 22:50:07,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15c849fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:50:07, skipping insertion in model container [2025-02-05 22:50:07,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:50:07" (3/3) ... [2025-02-05 22:50:07,398 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i [2025-02-05 22:50:07,408 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 22:50:07,410 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i that has 2 procedures, 105 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 22:50:07,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 22:50:07,466 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;@2aa771c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 22:50:07,466 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 22:50:07,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2025-02-05 22:50:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2025-02-05 22:50:07,479 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:50:07,480 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 22:50:07,480 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:50:07,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:50:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash -75769747, now seen corresponding path program 1 times [2025-02-05 22:50:07,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 22:50:07,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723416015] [2025-02-05 22:50:07,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:50:07,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 22:50:07,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 228 statements into 1 equivalence classes. [2025-02-05 22:50:07,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 228 of 228 statements. [2025-02-05 22:50:07,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:50:07,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:50:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2025-02-05 22:50:07,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 22:50:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723416015] [2025-02-05 22:50:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723416015] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 22:50:07,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290593425] [2025-02-05 22:50:07,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:50:07,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 22:50:07,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 22:50:07,830 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 22:50:07,831 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 22:50:07,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 228 statements into 1 equivalence classes. [2025-02-05 22:50:07,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 228 of 228 statements. [2025-02-05 22:50:07,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:50:07,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:50:08,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 22:50:08,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 22:50:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2025-02-05 22:50:08,051 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 22:50:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290593425] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 22:50:08,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 22:50:08,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 22:50:08,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217026747] [2025-02-05 22:50:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 22:50:08,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 22:50:08,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 22:50:08,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 22:50:08,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 22:50:08,075 INFO L87 Difference]: Start difference. First operand has 105 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 66 states have internal predecessors, (97), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2025-02-05 22:50:08,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 22:50:08,094 INFO L93 Difference]: Finished difference Result 203 states and 373 transitions. [2025-02-05 22:50:08,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 22:50:08,096 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) Word has length 228 [2025-02-05 22:50:08,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 22:50:08,100 INFO L225 Difference]: With dead ends: 203 [2025-02-05 22:50:08,101 INFO L226 Difference]: Without dead ends: 101 [2025-02-05 22:50:08,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 22:50:08,105 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 22:50:08,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 22:50:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-02-05 22:50:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2025-02-05 22:50:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2025-02-05 22:50:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 163 transitions. [2025-02-05 22:50:08,140 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 163 transitions. Word has length 228 [2025-02-05 22:50:08,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 22:50:08,140 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 163 transitions. [2025-02-05 22:50:08,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 2 states have call successors, (37) [2025-02-05 22:50:08,140 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 163 transitions. [2025-02-05 22:50:08,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2025-02-05 22:50:08,143 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:50:08,143 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 22:50:08,150 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 22:50:08,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-05 22:50:08,344 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:50:08,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:50:08,345 INFO L85 PathProgramCache]: Analyzing trace with hash 402112212, now seen corresponding path program 1 times [2025-02-05 22:50:08,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 22:50:08,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010100072] [2025-02-05 22:50:08,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:50:08,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 22:50:08,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 228 statements into 1 equivalence classes. [2025-02-05 22:50:08,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 228 of 228 statements. [2025-02-05 22:50:08,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:50:08,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:50:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2025-02-05 22:50:09,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 22:50:09,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010100072] [2025-02-05 22:50:09,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010100072] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 22:50:09,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 22:50:09,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 22:50:09,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128573702] [2025-02-05 22:50:09,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 22:50:09,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 22:50:09,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 22:50:09,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 22:50:09,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 22:50:09,325 INFO L87 Difference]: Start difference. First operand 101 states and 163 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2025-02-05 22:50:09,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 22:50:09,999 INFO L93 Difference]: Finished difference Result 357 states and 578 transitions. [2025-02-05 22:50:09,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 22:50:09,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 228 [2025-02-05 22:50:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 22:50:10,002 INFO L225 Difference]: With dead ends: 357 [2025-02-05 22:50:10,006 INFO L226 Difference]: Without dead ends: 259 [2025-02-05 22:50:10,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-05 22:50:10,007 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 368 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 22:50:10,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 579 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 22:50:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2025-02-05 22:50:10,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 252. [2025-02-05 22:50:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 153 states have (on average 1.4313725490196079) internal successors, (219), 154 states have internal predecessors, (219), 95 states have call successors, (95), 3 states have call predecessors, (95), 3 states have return successors, (95), 94 states have call predecessors, (95), 95 states have call successors, (95) [2025-02-05 22:50:10,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 409 transitions. [2025-02-05 22:50:10,047 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 409 transitions. Word has length 228 [2025-02-05 22:50:10,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 22:50:10,050 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 409 transitions. [2025-02-05 22:50:10,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2025-02-05 22:50:10,050 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 409 transitions. [2025-02-05 22:50:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2025-02-05 22:50:10,055 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:50:10,055 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 22:50:10,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 22:50:10,056 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:50:10,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:50:10,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1588575546, now seen corresponding path program 1 times [2025-02-05 22:50:10,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 22:50:10,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868772553] [2025-02-05 22:50:10,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:50:10,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 22:50:10,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 229 statements into 1 equivalence classes. [2025-02-05 22:50:10,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 229 of 229 statements. [2025-02-05 22:50:10,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:50:10,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:50:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2025-02-05 22:50:10,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 22:50:10,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868772553] [2025-02-05 22:50:10,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868772553] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 22:50:10,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 22:50:10,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 22:50:10,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017159927] [2025-02-05 22:50:10,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 22:50:10,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 22:50:10,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 22:50:10,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 22:50:10,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-05 22:50:10,636 INFO L87 Difference]: Start difference. First operand 252 states and 409 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2025-02-05 22:50:11,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 22:50:11,395 INFO L93 Difference]: Finished difference Result 1065 states and 1723 transitions. [2025-02-05 22:50:11,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 22:50:11,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 229 [2025-02-05 22:50:11,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 22:50:11,409 INFO L225 Difference]: With dead ends: 1065 [2025-02-05 22:50:11,409 INFO L226 Difference]: Without dead ends: 816 [2025-02-05 22:50:11,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-02-05 22:50:11,412 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 568 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 22:50:11,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 519 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 22:50:11,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2025-02-05 22:50:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 595. [2025-02-05 22:50:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 376 states have (on average 1.4734042553191489) internal successors, (554), 379 states have internal predecessors, (554), 211 states have call successors, (211), 7 states have call predecessors, (211), 7 states have return successors, (211), 208 states have call predecessors, (211), 211 states have call successors, (211) [2025-02-05 22:50:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 976 transitions. [2025-02-05 22:50:11,525 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 976 transitions. Word has length 229 [2025-02-05 22:50:11,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 22:50:11,527 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 976 transitions. [2025-02-05 22:50:11,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2025-02-05 22:50:11,527 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 976 transitions. [2025-02-05 22:50:11,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2025-02-05 22:50:11,530 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:50:11,530 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 22:50:11,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 22:50:11,530 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:50:11,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:50:11,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1083016921, now seen corresponding path program 1 times [2025-02-05 22:50:11,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 22:50:11,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402523350] [2025-02-05 22:50:11,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:50:11,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 22:50:11,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 229 statements into 1 equivalence classes. [2025-02-05 22:50:11,603 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 229 of 229 statements. [2025-02-05 22:50:11,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:50:11,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:50:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 39 proven. 69 refuted. 0 times theorem prover too weak. 2556 trivial. 0 not checked. [2025-02-05 22:50:12,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 22:50:12,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402523350] [2025-02-05 22:50:12,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402523350] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 22:50:12,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707721453] [2025-02-05 22:50:12,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:50:12,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 22:50:12,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 22:50:12,064 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 22:50:12,067 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 22:50:12,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 229 statements into 1 equivalence classes. [2025-02-05 22:50:12,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 229 of 229 statements. [2025-02-05 22:50:12,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:50:12,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:50:12,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 22:50:12,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 22:50:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 816 proven. 18 refuted. 0 times theorem prover too weak. 1830 trivial. 0 not checked. [2025-02-05 22:50:12,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 22:50:18,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2025-02-05 22:50:18,676 WARN L249 Executor]: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2025-02-05 22:50:18,677 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2025-02-05 22:50:18,684 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 22:50:18,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 22:50:18,878 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:912) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 46 more [2025-02-05 22:50:18,884 INFO L158 Benchmark]: Toolchain (without parser) took 12485.69ms. Allocated memory was 167.8MB in the beginning and 360.7MB in the end (delta: 192.9MB). Free memory was 123.0MB in the beginning and 272.4MB in the end (delta: -149.4MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2025-02-05 22:50:18,884 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 115.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 22:50:18,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.63ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 106.8MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-05 22:50:18,884 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.58ms. Allocated memory is still 167.8MB. Free memory was 106.8MB in the beginning and 101.4MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 22:50:18,884 INFO L158 Benchmark]: Boogie Preprocessor took 68.42ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 93.7MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 22:50:18,885 INFO L158 Benchmark]: IcfgBuilder took 599.67ms. Allocated memory is still 167.8MB. Free memory was 93.7MB in the beginning and 61.9MB in the end (delta: 31.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-05 22:50:18,885 INFO L158 Benchmark]: TraceAbstraction took 11493.06ms. Allocated memory was 167.8MB in the beginning and 360.7MB in the end (delta: 192.9MB). Free memory was 61.2MB in the beginning and 272.4MB in the end (delta: -211.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 22:50:18,887 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 115.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.63ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 106.8MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.58ms. Allocated memory is still 167.8MB. Free memory was 106.8MB in the beginning and 101.4MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.42ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 93.7MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 599.67ms. Allocated memory is still 167.8MB. Free memory was 93.7MB in the beginning and 61.9MB in the end (delta: 31.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 11493.06ms. Allocated memory was 167.8MB in the beginning and 360.7MB in the end (delta: 192.9MB). Free memory was 61.2MB in the beginning and 272.4MB in the end (delta: -211.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 d1e8bbf11bf9730dd392ee96f7f9b3c02d5fdcc2b789ed2be8b6a41d75b98db6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 22:50:20,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 22:50:20,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-02-05 22:50:20,814 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 22:50:20,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 22:50:20,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 22:50:20,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 22:50:20,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 22:50:20,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 22:50:20,837 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 22:50:20,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 22:50:20,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 22:50:20,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 22:50:20,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 22:50:20,838 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 22:50:20,838 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 22:50:20,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 22:50:20,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 22:50:20,839 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 -> d1e8bbf11bf9730dd392ee96f7f9b3c02d5fdcc2b789ed2be8b6a41d75b98db6 [2025-02-05 22:50:21,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 22:50:21,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 22:50:21,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 22:50:21,096 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 22:50:21,096 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 22:50:21,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i [2025-02-05 22:50:22,297 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8d916b6d6/81dff0d42ff043f9ab338dccb7a2641e/FLAG3379f9dc8 [2025-02-05 22:50:22,485 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 22:50:22,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i [2025-02-05 22:50:22,491 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8d916b6d6/81dff0d42ff043f9ab338dccb7a2641e/FLAG3379f9dc8 [2025-02-05 22:50:22,504 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8d916b6d6/81dff0d42ff043f9ab338dccb7a2641e [2025-02-05 22:50:22,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 22:50:22,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 22:50:22,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 22:50:22,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 22:50:22,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 22:50:22,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4718f4af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22, skipping insertion in model container [2025-02-05 22:50:22,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,524 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 22:50:22,635 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i[918,931] [2025-02-05 22:50:22,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 22:50:22,727 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 22:50:22,737 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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i[918,931] [2025-02-05 22:50:22,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 22:50:22,788 INFO L204 MainTranslator]: Completed translation [2025-02-05 22:50:22,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22 WrapperNode [2025-02-05 22:50:22,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 22:50:22,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 22:50:22,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 22:50:22,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 22:50:22,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,839 INFO L138 Inliner]: procedures = 27, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 213 [2025-02-05 22:50:22,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 22:50:22,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 22:50:22,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 22:50:22,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 22:50:22,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,858 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,872 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 22:50:22,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,889 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 22:50:22,904 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 22:50:22,904 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 22:50:22,904 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 22:50:22,904 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (1/1) ... [2025-02-05 22:50:22,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 22:50:22,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 22:50:22,936 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 22:50:22,939 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 22:50:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 22:50:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-05 22:50:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 22:50:22,959 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 22:50:22,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 22:50:22,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 22:50:23,036 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 22:50:23,038 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 22:50:45,508 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-02-05 22:50:45,508 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 22:50:45,516 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 22:50:45,516 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 22:50:45,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:50:45 BoogieIcfgContainer [2025-02-05 22:50:45,516 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 22:50:45,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 22:50:45,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 22:50:45,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 22:50:45,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:50:22" (1/3) ... [2025-02-05 22:50:45,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694ee71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:50:45, skipping insertion in model container [2025-02-05 22:50:45,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:50:22" (2/3) ... [2025-02-05 22:50:45,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694ee71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:50:45, skipping insertion in model container [2025-02-05 22:50:45,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:50:45" (3/3) ... [2025-02-05 22:50:45,523 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i [2025-02-05 22:50:45,533 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 22:50:45,535 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-8.i that has 2 procedures, 101 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 22:50:45,579 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 22:50:45,587 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;@7cb9595c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 22:50:45,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 22:50:45,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 62 states have internal predecessors, (90), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2025-02-05 22:50:45,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2025-02-05 22:50:45,600 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:50:45,601 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 22:50:45,601 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:50:45,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:50:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash 746072685, now seen corresponding path program 1 times [2025-02-05 22:50:45,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 22:50:45,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505058804] [2025-02-05 22:50:45,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:50:45,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-05 22:50:45,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 22:50:45,615 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-05 22:50:45,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2025-02-05 22:50:45,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 228 statements into 1 equivalence classes. [2025-02-05 22:50:46,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 228 of 228 statements. [2025-02-05 22:50:46,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:50:46,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:50:46,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 22:50:46,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 22:50:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2025-02-05 22:50:46,789 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 22:50:46,790 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-05 22:50:46,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505058804] [2025-02-05 22:50:46,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505058804] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 22:50:46,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 22:50:46,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 22:50:46,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144165179] [2025-02-05 22:50:46,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 22:50:46,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 22:50:46,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-05 22:50:46,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 22:50:46,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 22:50:46,817 INFO L87 Difference]: Start difference. First operand has 101 states, 61 states have (on average 1.4754098360655739) internal successors, (90), 62 states have internal predecessors, (90), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2025-02-05 22:50:46,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 22:50:46,839 INFO L93 Difference]: Finished difference Result 196 states and 360 transitions. [2025-02-05 22:50:46,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 22:50:46,840 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 228 [2025-02-05 22:50:46,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 22:50:46,845 INFO L225 Difference]: With dead ends: 196 [2025-02-05 22:50:46,845 INFO L226 Difference]: Without dead ends: 98 [2025-02-05 22:50:46,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 22:50:46,849 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 22:50:46,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 22:50:46,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-02-05 22:50:46,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2025-02-05 22:50:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 59 states have internal predecessors, (83), 37 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2025-02-05 22:50:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 157 transitions. [2025-02-05 22:50:46,882 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 157 transitions. Word has length 228 [2025-02-05 22:50:46,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 22:50:46,882 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 157 transitions. [2025-02-05 22:50:46,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2025-02-05 22:50:46,883 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 157 transitions. [2025-02-05 22:50:46,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2025-02-05 22:50:46,885 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:50:46,885 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 22:50:46,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2025-02-05 22:50:47,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-05 22:50:47,086 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:50:47,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:50:47,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1223954644, now seen corresponding path program 1 times [2025-02-05 22:50:47,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 22:50:47,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742989823] [2025-02-05 22:50:47,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:50:47,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-05 22:50:47,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 22:50:47,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-05 22:50:47,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2025-02-05 22:50:47,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 228 statements into 1 equivalence classes. [2025-02-05 22:50:48,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 228 of 228 statements. [2025-02-05 22:50:48,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:50:48,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:50:48,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 22:50:48,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 22:51:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 1338 proven. 45 refuted. 0 times theorem prover too weak. 1281 trivial. 0 not checked. [2025-02-05 22:51:01,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 22:51:05,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-05 22:51:05,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742989823] [2025-02-05 22:51:05,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742989823] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 22:51:05,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1611656211] [2025-02-05 22:51:05,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:51:05,483 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-02-05 22:51:05,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-02-05 22:51:05,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-02-05 22:51:05,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2025-02-05 22:51:05,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 228 statements into 1 equivalence classes. [2025-02-05 22:51:07,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 228 of 228 statements. [2025-02-05 22:51:07,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:51:07,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:51:07,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 22:51:07,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 22:51:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2025-02-05 22:51:16,349 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 22:51:16,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1611656211] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 22:51:16,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 22:51:16,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2025-02-05 22:51:16,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371291055] [2025-02-05 22:51:16,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 22:51:16,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 22:51:16,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-05 22:51:16,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 22:51:16,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-02-05 22:51:16,351 INFO L87 Difference]: Start difference. First operand 98 states and 157 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2025-02-05 22:51:21,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-05 22:51:25,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-05 22:51:25,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 22:51:25,906 INFO L93 Difference]: Finished difference Result 286 states and 462 transitions. [2025-02-05 22:51:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 22:51:26,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) Word has length 228 [2025-02-05 22:51:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 22:51:26,091 INFO L225 Difference]: With dead ends: 286 [2025-02-05 22:51:26,091 INFO L226 Difference]: Without dead ends: 191 [2025-02-05 22:51:26,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-02-05 22:51:26,092 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 37 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2025-02-05 22:51:26,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 289 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2025-02-05 22:51:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-02-05 22:51:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2025-02-05 22:51:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 111 states have (on average 1.3963963963963963) internal successors, (155), 111 states have internal predecessors, (155), 74 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2025-02-05 22:51:26,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 303 transitions. [2025-02-05 22:51:26,129 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 303 transitions. Word has length 228 [2025-02-05 22:51:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 22:51:26,130 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 303 transitions. [2025-02-05 22:51:26,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (37), 1 states have call predecessors, (37), 1 states have return successors, (37), 1 states have call predecessors, (37), 1 states have call successors, (37) [2025-02-05 22:51:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 303 transitions. [2025-02-05 22:51:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2025-02-05 22:51:26,133 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:51:26,133 INFO L218 NwaCegarLoop]: trace histogram [37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 22:51:26,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2025-02-05 22:51:26,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2025-02-05 22:51:26,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-02-05 22:51:26,534 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:51:26,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:51:26,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1789875415, now seen corresponding path program 1 times [2025-02-05 22:51:26,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 22:51:26,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754207308] [2025-02-05 22:51:26,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:51:26,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-02-05 22:51:26,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-02-05 22:51:26,537 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-02-05 22:51:26,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2025-02-05 22:51:26,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 229 statements into 1 equivalence classes. [2025-02-05 22:51:27,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 229 of 229 statements. [2025-02-05 22:51:27,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:51:27,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:51:27,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 22:51:27,538 INFO L279 TraceCheckSpWp]: Computing forward predicates...