./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-31.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-31.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 6a7974064a8971bceca2aca98594e85fbf3a77834158073b9b1833f7bdef4f33 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 22:43:19,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 22:43:19,070 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 22:43:19,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 22:43:19,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 22:43:19,103 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 22:43:19,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 22:43:19,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 22:43:19,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 22:43:19,105 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 22:43:19,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 22:43:19,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 22:43:19,106 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 22:43:19,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 22:43:19,106 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 22:43:19,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 22:43:19,107 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 22:43:19,107 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 22:43:19,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 22:43:19,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 22:43:19,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 22:43:19,107 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 22:43:19,107 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 22:43:19,107 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 22:43:19,107 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 22:43:19,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 22:43:19,108 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 22:43:19,108 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 22:43:19,108 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 22:43:19,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 22:43:19,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 22:43:19,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 22:43:19,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 22:43:19,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 22:43:19,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 22:43:19,108 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 22:43:19,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 22:43:19,108 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 22:43:19,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 22:43:19,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 22:43:19,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 22:43:19,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 22:43:19,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 22:43:19,109 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 -> 6a7974064a8971bceca2aca98594e85fbf3a77834158073b9b1833f7bdef4f33 [2025-02-05 22:43:19,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 22:43:19,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 22:43:19,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 22:43:19,359 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 22:43:19,359 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 22:43:19,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-31.i [2025-02-05 22:43:20,547 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f09642be/0a569afdd5aa42ef8569516eacc8aedf/FLAGe734f8b1b [2025-02-05 22:43:20,842 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 22:43:20,842 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-31.i [2025-02-05 22:43:20,856 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f09642be/0a569afdd5aa42ef8569516eacc8aedf/FLAGe734f8b1b [2025-02-05 22:43:20,874 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f09642be/0a569afdd5aa42ef8569516eacc8aedf [2025-02-05 22:43:20,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 22:43:20,879 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 22:43:20,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 22:43:20,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 22:43:20,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 22:43:20,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:43:20" (1/1) ... [2025-02-05 22:43:20,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ba2974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:20, skipping insertion in model container [2025-02-05 22:43:20,887 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:43:20" (1/1) ... [2025-02-05 22:43:20,910 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 22:43:21,021 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-31.i[919,932] [2025-02-05 22:43:21,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 22:43:21,097 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 22:43:21,108 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-31.i[919,932] [2025-02-05 22:43:21,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 22:43:21,165 INFO L204 MainTranslator]: Completed translation [2025-02-05 22:43:21,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21 WrapperNode [2025-02-05 22:43:21,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 22:43:21,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 22:43:21,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 22:43:21,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 22:43:21,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,181 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,226 INFO L138 Inliner]: procedures = 26, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 263 [2025-02-05 22:43:21,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 22:43:21,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 22:43:21,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 22:43:21,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 22:43:21,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,238 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,262 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 22:43:21,263 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,273 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,275 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,277 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,278 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 22:43:21,286 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 22:43:21,286 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 22:43:21,286 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 22:43:21,286 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (1/1) ... [2025-02-05 22:43:21,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 22:43:21,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 22:43:21,310 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 22:43:21,317 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 22:43:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 22:43:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 22:43:21,332 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 22:43:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 22:43:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 22:43:21,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 22:43:21,395 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 22:43:21,396 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 22:43:21,820 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-02-05 22:43:21,821 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 22:43:21,835 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 22:43:21,835 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 22:43:21,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:43:21 BoogieIcfgContainer [2025-02-05 22:43:21,836 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 22:43:21,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 22:43:21,838 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 22:43:21,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 22:43:21,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:43:20" (1/3) ... [2025-02-05 22:43:21,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ec0e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:43:21, skipping insertion in model container [2025-02-05 22:43:21,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:43:21" (2/3) ... [2025-02-05 22:43:21,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ec0e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:43:21, skipping insertion in model container [2025-02-05 22:43:21,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:43:21" (3/3) ... [2025-02-05 22:43:21,843 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-31.i [2025-02-05 22:43:21,852 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 22:43:21,856 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-31.i that has 2 procedures, 119 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 22:43:21,900 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 22:43:21,914 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;@2609c17c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 22:43:21,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 22:43:21,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 69 states have internal predecessors, (94), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2025-02-05 22:43:21,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2025-02-05 22:43:21,933 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:43:21,934 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:21,935 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:43:21,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:43:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1370384839, now seen corresponding path program 1 times [2025-02-05 22:43:21,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 22:43:21,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874975556] [2025-02-05 22:43:21,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:43:21,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 22:43:22,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 290 statements into 1 equivalence classes. [2025-02-05 22:43:22,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 290 of 290 statements. [2025-02-05 22:43:22,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:43:22,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:43:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2025-02-05 22:43:22,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 22:43:22,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874975556] [2025-02-05 22:43:22,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874975556] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 22:43:22,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311564236] [2025-02-05 22:43:22,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:43:22,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 22:43:22,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 22:43:22,369 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 22:43:22,370 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 22:43:22,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 290 statements into 1 equivalence classes. [2025-02-05 22:43:22,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 290 of 290 statements. [2025-02-05 22:43:22,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:43:22,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:43:22,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 22:43:22,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 22:43:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2025-02-05 22:43:22,682 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 22:43:22,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311564236] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 22:43:22,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 22:43:22,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 22:43:22,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536292030] [2025-02-05 22:43:22,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 22:43:22,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 22:43:22,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 22:43:22,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 22:43:22,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 22:43:22,710 INFO L87 Difference]: Start difference. First operand has 119 states, 68 states have (on average 1.3823529411764706) internal successors, (94), 69 states have internal predecessors, (94), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2025-02-05 22:43:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 22:43:22,749 INFO L93 Difference]: Finished difference Result 232 states and 423 transitions. [2025-02-05 22:43:22,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 22:43:22,752 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) Word has length 290 [2025-02-05 22:43:22,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 22:43:22,758 INFO L225 Difference]: With dead ends: 232 [2025-02-05 22:43:22,758 INFO L226 Difference]: Without dead ends: 116 [2025-02-05 22:43:22,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 291 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 22:43:22,764 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 22:43:22,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 22:43:22,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-02-05 22:43:22,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2025-02-05 22:43:22,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 66 states have internal predecessors, (89), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2025-02-05 22:43:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 185 transitions. [2025-02-05 22:43:22,818 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 185 transitions. Word has length 290 [2025-02-05 22:43:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 22:43:22,821 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 185 transitions. [2025-02-05 22:43:22,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 2 states have call successors, (48) [2025-02-05 22:43:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 185 transitions. [2025-02-05 22:43:22,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2025-02-05 22:43:22,824 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:43:22,827 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:22,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 22:43:23,028 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 22:43:23,029 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:43:23,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:43:23,030 INFO L85 PathProgramCache]: Analyzing trace with hash -17434937, now seen corresponding path program 1 times [2025-02-05 22:43:23,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 22:43:23,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62536185] [2025-02-05 22:43:23,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:43:23,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 22:43:23,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 290 statements into 1 equivalence classes. [2025-02-05 22:43:23,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 290 of 290 statements. [2025-02-05 22:43:23,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:43:23,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:43:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2025-02-05 22:43:23,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 22:43:23,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62536185] [2025-02-05 22:43:23,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62536185] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 22:43:23,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 22:43:23,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 22:43:23,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634743041] [2025-02-05 22:43:23,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 22:43:23,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 22:43:23,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 22:43:23,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 22:43:23,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 22:43:23,359 INFO L87 Difference]: Start difference. First operand 116 states and 185 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2025-02-05 22:43:23,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 22:43:23,447 INFO L93 Difference]: Finished difference Result 341 states and 547 transitions. [2025-02-05 22:43:23,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 22:43:23,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 290 [2025-02-05 22:43:23,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 22:43:23,450 INFO L225 Difference]: With dead ends: 341 [2025-02-05 22:43:23,450 INFO L226 Difference]: Without dead ends: 228 [2025-02-05 22:43:23,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 22:43:23,458 INFO L435 NwaCegarLoop]: 351 mSDtfsCounter, 173 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 22:43:23,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 524 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 22:43:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-02-05 22:43:23,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 120. [2025-02-05 22:43:23,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 70 states have internal predecessors, (94), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2025-02-05 22:43:23,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 190 transitions. [2025-02-05 22:43:23,484 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 190 transitions. Word has length 290 [2025-02-05 22:43:23,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 22:43:23,486 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 190 transitions. [2025-02-05 22:43:23,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2025-02-05 22:43:23,487 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 190 transitions. [2025-02-05 22:43:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2025-02-05 22:43:23,492 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:43:23,492 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:23,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 22:43:23,492 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:43:23,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:43:23,493 INFO L85 PathProgramCache]: Analyzing trace with hash -527969114, now seen corresponding path program 1 times [2025-02-05 22:43:23,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 22:43:23,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707661919] [2025-02-05 22:43:23,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:43:23,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 22:43:23,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 290 statements into 1 equivalence classes. [2025-02-05 22:43:23,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 290 of 290 statements. [2025-02-05 22:43:23,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:43:23,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 22:43:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2025-02-05 22:43:24,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 22:43:24,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707661919] [2025-02-05 22:43:24,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707661919] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 22:43:24,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 22:43:24,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 22:43:24,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913644497] [2025-02-05 22:43:24,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 22:43:24,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 22:43:24,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 22:43:24,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 22:43:24,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 22:43:24,060 INFO L87 Difference]: Start difference. First operand 120 states and 190 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2025-02-05 22:43:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 22:43:24,095 INFO L93 Difference]: Finished difference Result 237 states and 377 transitions. [2025-02-05 22:43:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 22:43:24,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 290 [2025-02-05 22:43:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 22:43:24,101 INFO L225 Difference]: With dead ends: 237 [2025-02-05 22:43:24,103 INFO L226 Difference]: Without dead ends: 120 [2025-02-05 22:43:24,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 22:43:24,104 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 22:43:24,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 22:43:24,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-02-05 22:43:24,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-02-05 22:43:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2025-02-05 22:43:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 189 transitions. [2025-02-05 22:43:24,120 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 189 transitions. Word has length 290 [2025-02-05 22:43:24,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 22:43:24,121 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 189 transitions. [2025-02-05 22:43:24,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) [2025-02-05 22:43:24,122 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 189 transitions. [2025-02-05 22:43:24,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2025-02-05 22:43:24,125 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 22:43:24,126 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:24,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 22:43:24,126 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 22:43:24,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 22:43:24,127 INFO L85 PathProgramCache]: Analyzing trace with hash 359534567, now seen corresponding path program 1 times [2025-02-05 22:43:24,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 22:43:24,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102356716] [2025-02-05 22:43:24,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 22:43:24,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 22:43:24,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 290 statements into 1 equivalence classes. [2025-02-05 22:43:24,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 290 of 290 statements. [2025-02-05 22:43:24,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 22:43:24,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat