./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.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-pr-cn_file-34.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 a2e67766c6fd196971faf344e8fff85e5c895ea0afd7f2774008fd81029a9807 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 23:08:25,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 23:08:25,800 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 23:08:25,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 23:08:25,808 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 23:08:25,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 23:08:25,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 23:08:25,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 23:08:25,829 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 23:08:25,829 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 23:08:25,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 23:08:25,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 23:08:25,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 23:08:25,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 23:08:25,830 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 23:08:25,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 23:08:25,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 23:08:25,831 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 23:08:25,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 23:08:25,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 23:08:25,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 23:08:25,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 23:08:25,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 23:08:25,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 23:08:25,832 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 23:08:25,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 23:08:25,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 23:08:25,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 23:08:25,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 23:08:25,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 23:08:25,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 23:08:25,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 23:08:25,833 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 -> a2e67766c6fd196971faf344e8fff85e5c895ea0afd7f2774008fd81029a9807 [2025-02-05 23:08:26,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 23:08:26,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 23:08:26,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 23:08:26,068 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 23:08:26,068 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 23:08:26,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i [2025-02-05 23:08:27,400 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bfec49f5e/8bf49a89713e43cd85b0429e6ba8f532/FLAG472aadcc5 [2025-02-05 23:08:27,664 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 23:08:27,667 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i [2025-02-05 23:08:27,675 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bfec49f5e/8bf49a89713e43cd85b0429e6ba8f532/FLAG472aadcc5 [2025-02-05 23:08:27,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bfec49f5e/8bf49a89713e43cd85b0429e6ba8f532 [2025-02-05 23:08:27,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 23:08:27,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 23:08:27,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 23:08:27,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 23:08:27,971 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 23:08:27,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 11:08:27" (1/1) ... [2025-02-05 23:08:27,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9adde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:27, skipping insertion in model container [2025-02-05 23:08:27,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 11:08:27" (1/1) ... [2025-02-05 23:08:27,996 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 23:08:28,113 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-pr-cn_file-34.i[919,932] [2025-02-05 23:08:28,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 23:08:28,182 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 23:08:28,189 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-pr-cn_file-34.i[919,932] [2025-02-05 23:08:28,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 23:08:28,231 INFO L204 MainTranslator]: Completed translation [2025-02-05 23:08:28,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28 WrapperNode [2025-02-05 23:08:28,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 23:08:28,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 23:08:28,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 23:08:28,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 23:08:28,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,247 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,273 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 263 [2025-02-05 23:08:28,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 23:08:28,274 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 23:08:28,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 23:08:28,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 23:08:28,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,305 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 23:08:28,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,316 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,323 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,325 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,327 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 23:08:28,332 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 23:08:28,332 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 23:08:28,332 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 23:08:28,333 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (1/1) ... [2025-02-05 23:08:28,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 23:08:28,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 23:08:28,366 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 23:08:28,370 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 23:08:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 23:08:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-05 23:08:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-05 23:08:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 23:08:28,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 23:08:28,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 23:08:28,467 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 23:08:28,468 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 23:08:28,923 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L205: havoc property_#t~bitwise24#1;havoc property_#t~ite26#1;havoc property_#t~bitwise25#1;havoc property_#t~short27#1; [2025-02-05 23:08:28,977 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2025-02-05 23:08:28,977 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 23:08:29,001 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 23:08:29,003 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 23:08:29,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 11:08:29 BoogieIcfgContainer [2025-02-05 23:08:29,003 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 23:08:29,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 23:08:29,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 23:08:29,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 23:08:29,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 11:08:27" (1/3) ... [2025-02-05 23:08:29,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4606d606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 11:08:29, skipping insertion in model container [2025-02-05 23:08:29,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 11:08:28" (2/3) ... [2025-02-05 23:08:29,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4606d606 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 11:08:29, skipping insertion in model container [2025-02-05 23:08:29,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 11:08:29" (3/3) ... [2025-02-05 23:08:29,011 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i [2025-02-05 23:08:29,023 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 23:08:29,026 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-cn_file-34.i that has 2 procedures, 111 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 23:08:29,064 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 23:08:29,076 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;@342014e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 23:08:29,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 23:08:29,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 75 states have (on average 1.4666666666666666) internal successors, (110), 76 states have internal predecessors, (110), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2025-02-05 23:08:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2025-02-05 23:08:29,102 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 23:08:29,103 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:29,103 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 23:08:29,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 23:08:29,107 INFO L85 PathProgramCache]: Analyzing trace with hash -976668312, now seen corresponding path program 1 times [2025-02-05 23:08:29,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 23:08:29,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428262164] [2025-02-05 23:08:29,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 23:08:29,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 23:08:29,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 212 statements into 1 equivalence classes. [2025-02-05 23:08:29,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 212 of 212 statements. [2025-02-05 23:08:29,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 23:08:29,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 23:08:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2025-02-05 23:08:29,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 23:08:29,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428262164] [2025-02-05 23:08:29,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428262164] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 23:08:29,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343801986] [2025-02-05 23:08:29,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 23:08:29,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 23:08:29,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 23:08:29,447 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 23:08:29,448 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 23:08:29,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 212 statements into 1 equivalence classes. [2025-02-05 23:08:29,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 212 of 212 statements. [2025-02-05 23:08:29,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 23:08:29,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 23:08:29,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-05 23:08:29,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 23:08:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2025-02-05 23:08:29,625 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 23:08:29,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343801986] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 23:08:29,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 23:08:29,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-05 23:08:29,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099132812] [2025-02-05 23:08:29,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 23:08:29,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 23:08:29,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 23:08:29,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 23:08:29,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 23:08:29,647 INFO L87 Difference]: Start difference. First operand has 111 states, 75 states have (on average 1.4666666666666666) internal successors, (110), 76 states have internal predecessors, (110), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2025-02-05 23:08:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 23:08:29,681 INFO L93 Difference]: Finished difference Result 216 states and 380 transitions. [2025-02-05 23:08:29,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 23:08:29,682 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 212 [2025-02-05 23:08:29,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 23:08:29,688 INFO L225 Difference]: With dead ends: 216 [2025-02-05 23:08:29,689 INFO L226 Difference]: Without dead ends: 108 [2025-02-05 23:08:29,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 213 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 23:08:29,695 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 23:08:29,697 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 23:08:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-02-05 23:08:29,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-02-05 23:08:29,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 73 states have internal predecessors, (105), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2025-02-05 23:08:29,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 171 transitions. [2025-02-05 23:08:29,734 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 171 transitions. Word has length 212 [2025-02-05 23:08:29,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 23:08:29,734 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 171 transitions. [2025-02-05 23:08:29,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2025-02-05 23:08:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 171 transitions. [2025-02-05 23:08:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2025-02-05 23:08:29,737 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 23:08:29,738 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:29,745 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 23:08:29,938 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 23:08:29,939 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 23:08:29,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 23:08:29,939 INFO L85 PathProgramCache]: Analyzing trace with hash -343614363, now seen corresponding path program 1 times [2025-02-05 23:08:29,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 23:08:29,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586371675] [2025-02-05 23:08:29,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 23:08:29,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 23:08:29,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 212 statements into 1 equivalence classes. [2025-02-05 23:08:30,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 212 of 212 statements. [2025-02-05 23:08:30,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 23:08:30,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 23:08:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-02-05 23:08:30,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 23:08:30,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586371675] [2025-02-05 23:08:30,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586371675] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 23:08:30,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 23:08:30,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 23:08:30,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730571438] [2025-02-05 23:08:30,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 23:08:30,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 23:08:30,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 23:08:30,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 23:08:30,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 23:08:30,529 INFO L87 Difference]: Start difference. First operand 108 states and 171 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:08:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 23:08:30,728 INFO L93 Difference]: Finished difference Result 358 states and 571 transitions. [2025-02-05 23:08:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 23:08:30,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 212 [2025-02-05 23:08:30,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 23:08:30,730 INFO L225 Difference]: With dead ends: 358 [2025-02-05 23:08:30,730 INFO L226 Difference]: Without dead ends: 253 [2025-02-05 23:08:30,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 23:08:30,733 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 173 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 23:08:30,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 536 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 23:08:30,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-02-05 23:08:30,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 221. [2025-02-05 23:08:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 152 states have (on average 1.4671052631578947) internal successors, (223), 152 states have internal predecessors, (223), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2025-02-05 23:08:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 355 transitions. [2025-02-05 23:08:30,776 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 355 transitions. Word has length 212 [2025-02-05 23:08:30,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 23:08:30,777 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 355 transitions. [2025-02-05 23:08:30,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:08:30,777 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 355 transitions. [2025-02-05 23:08:30,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2025-02-05 23:08:30,779 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 23:08:30,779 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:30,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 23:08:30,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 23:08:30,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 23:08:30,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1911976006, now seen corresponding path program 1 times [2025-02-05 23:08:30,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 23:08:30,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650783082] [2025-02-05 23:08:30,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 23:08:30,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 23:08:30,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 213 statements into 1 equivalence classes. [2025-02-05 23:08:30,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 213 of 213 statements. [2025-02-05 23:08:30,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 23:08:30,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 23:08:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-02-05 23:08:31,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 23:08:31,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650783082] [2025-02-05 23:08:31,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650783082] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 23:08:31,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 23:08:31,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 23:08:31,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667059100] [2025-02-05 23:08:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 23:08:31,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 23:08:31,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 23:08:31,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 23:08:31,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 23:08:31,096 INFO L87 Difference]: Start difference. First operand 221 states and 355 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:08:31,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 23:08:31,383 INFO L93 Difference]: Finished difference Result 648 states and 1042 transitions. [2025-02-05 23:08:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 23:08:31,384 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213 [2025-02-05 23:08:31,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 23:08:31,391 INFO L225 Difference]: With dead ends: 648 [2025-02-05 23:08:31,391 INFO L226 Difference]: Without dead ends: 430 [2025-02-05 23:08:31,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-05 23:08:31,396 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 196 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 23:08:31,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 643 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 23:08:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2025-02-05 23:08:31,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 225. [2025-02-05 23:08:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 156 states have (on average 1.455128205128205) internal successors, (227), 156 states have internal predecessors, (227), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2025-02-05 23:08:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 359 transitions. [2025-02-05 23:08:31,452 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 359 transitions. Word has length 213 [2025-02-05 23:08:31,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 23:08:31,452 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 359 transitions. [2025-02-05 23:08:31,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:08:31,453 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 359 transitions. [2025-02-05 23:08:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-02-05 23:08:31,454 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 23:08:31,455 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:31,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 23:08:31,455 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 23:08:31,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 23:08:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash 920420609, now seen corresponding path program 1 times [2025-02-05 23:08:31,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 23:08:31,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641351303] [2025-02-05 23:08:31,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 23:08:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 23:08:31,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-02-05 23:08:31,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-02-05 23:08:31,523 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 23:08:31,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 23:08:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-02-05 23:08:33,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 23:08:33,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641351303] [2025-02-05 23:08:33,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641351303] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 23:08:33,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 23:08:33,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 23:08:33,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922528508] [2025-02-05 23:08:33,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 23:08:33,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 23:08:33,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 23:08:33,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 23:08:33,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 23:08:33,295 INFO L87 Difference]: Start difference. First operand 225 states and 359 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:08:33,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 23:08:33,859 INFO L93 Difference]: Finished difference Result 663 states and 1047 transitions. [2025-02-05 23:08:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 23:08:33,859 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2025-02-05 23:08:33,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 23:08:33,862 INFO L225 Difference]: With dead ends: 663 [2025-02-05 23:08:33,862 INFO L226 Difference]: Without dead ends: 441 [2025-02-05 23:08:33,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-02-05 23:08:33,863 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 224 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 23:08:33,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 529 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 23:08:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2025-02-05 23:08:33,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 323. [2025-02-05 23:08:33,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 220 states have (on average 1.459090909090909) internal successors, (321), 220 states have internal predecessors, (321), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2025-02-05 23:08:33,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 519 transitions. [2025-02-05 23:08:33,919 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 519 transitions. Word has length 214 [2025-02-05 23:08:33,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 23:08:33,920 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 519 transitions. [2025-02-05 23:08:33,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:08:33,920 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 519 transitions. [2025-02-05 23:08:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-02-05 23:08:33,921 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 23:08:33,923 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:08:33,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 23:08:33,923 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 23:08:33,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 23:08:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash -629154084, now seen corresponding path program 1 times [2025-02-05 23:08:33,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 23:08:33,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599294026] [2025-02-05 23:08:33,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 23:08:33,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 23:08:33,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-02-05 23:08:34,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-02-05 23:08:34,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 23:08:34,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 23:09:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-02-05 23:09:11,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 23:09:11,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599294026] [2025-02-05 23:09:11,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599294026] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 23:09:11,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 23:09:11,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-02-05 23:09:11,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064773670] [2025-02-05 23:09:11,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 23:09:11,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-05 23:09:11,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 23:09:11,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-05 23:09:11,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2025-02-05 23:09:11,790 INFO L87 Difference]: Start difference. First operand 323 states and 519 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:09:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 23:09:14,073 INFO L93 Difference]: Finished difference Result 865 states and 1352 transitions. [2025-02-05 23:09:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 23:09:14,073 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2025-02-05 23:09:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 23:09:14,077 INFO L225 Difference]: With dead ends: 865 [2025-02-05 23:09:14,077 INFO L226 Difference]: Without dead ends: 606 [2025-02-05 23:09:14,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2025-02-05 23:09:14,079 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 812 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-05 23:09:14,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1295 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-05 23:09:14,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2025-02-05 23:09:14,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 437. [2025-02-05 23:09:14,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 334 states have (on average 1.4940119760479043) internal successors, (499), 334 states have internal predecessors, (499), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2025-02-05 23:09:14,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 697 transitions. [2025-02-05 23:09:14,148 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 697 transitions. Word has length 214 [2025-02-05 23:09:14,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 23:09:14,151 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 697 transitions. [2025-02-05 23:09:14,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:09:14,152 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 697 transitions. [2025-02-05 23:09:14,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-02-05 23:09:14,156 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 23:09:14,156 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:09:14,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 23:09:14,157 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 23:09:14,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 23:09:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash 258349597, now seen corresponding path program 1 times [2025-02-05 23:09:14,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 23:09:14,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118317898] [2025-02-05 23:09:14,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 23:09:14,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 23:09:14,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-02-05 23:09:14,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-02-05 23:09:14,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 23:09:14,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 23:09:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-02-05 23:09:16,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 23:09:16,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118317898] [2025-02-05 23:09:16,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118317898] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 23:09:16,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 23:09:16,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-05 23:09:16,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919367835] [2025-02-05 23:09:16,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 23:09:16,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 23:09:16,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 23:09:16,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 23:09:16,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-02-05 23:09:16,011 INFO L87 Difference]: Start difference. First operand 437 states and 697 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:09:16,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 23:09:16,974 INFO L93 Difference]: Finished difference Result 913 states and 1437 transitions. [2025-02-05 23:09:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 23:09:16,975 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2025-02-05 23:09:16,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 23:09:16,981 INFO L225 Difference]: With dead ends: 913 [2025-02-05 23:09:16,982 INFO L226 Difference]: Without dead ends: 675 [2025-02-05 23:09:16,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-02-05 23:09:16,985 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 480 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 23:09:16,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 668 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 23:09:16,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2025-02-05 23:09:17,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 505. [2025-02-05 23:09:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 402 states have (on average 1.4975124378109452) internal successors, (602), 402 states have internal predecessors, (602), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2025-02-05 23:09:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 800 transitions. [2025-02-05 23:09:17,027 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 800 transitions. Word has length 214 [2025-02-05 23:09:17,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 23:09:17,028 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 800 transitions. [2025-02-05 23:09:17,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:09:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 800 transitions. [2025-02-05 23:09:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-02-05 23:09:17,032 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 23:09:17,032 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:09:17,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 23:09:17,032 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 23:09:17,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 23:09:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1858358749, now seen corresponding path program 1 times [2025-02-05 23:09:17,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 23:09:17,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899465634] [2025-02-05 23:09:17,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 23:09:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 23:09:17,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-02-05 23:09:17,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-02-05 23:09:17,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 23:09:17,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 23:09:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-02-05 23:09:18,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 23:09:18,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899465634] [2025-02-05 23:09:18,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899465634] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 23:09:18,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 23:09:18,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-05 23:09:18,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271377014] [2025-02-05 23:09:18,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 23:09:18,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 23:09:18,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 23:09:18,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 23:09:18,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-05 23:09:18,641 INFO L87 Difference]: Start difference. First operand 505 states and 800 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2025-02-05 23:09:19,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 23:09:19,636 INFO L93 Difference]: Finished difference Result 907 states and 1409 transitions. [2025-02-05 23:09:19,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 23:09:19,637 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 214 [2025-02-05 23:09:19,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 23:09:19,640 INFO L225 Difference]: With dead ends: 907 [2025-02-05 23:09:19,640 INFO L226 Difference]: Without dead ends: 671 [2025-02-05 23:09:19,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2025-02-05 23:09:19,642 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 641 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 23:09:19,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 750 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 23:09:19,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2025-02-05 23:09:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 567. [2025-02-05 23:09:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 464 states have (on average 1.5064655172413792) internal successors, (699), 464 states have internal predecessors, (699), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2025-02-05 23:09:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 897 transitions. [2025-02-05 23:09:19,675 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 897 transitions. Word has length 214 [2025-02-05 23:09:19,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 23:09:19,675 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 897 transitions. [2025-02-05 23:09:19,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 2 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2025-02-05 23:09:19,676 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 897 transitions. [2025-02-05 23:09:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-02-05 23:09:19,677 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 23:09:19,677 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:09:19,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 23:09:19,678 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 23:09:19,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 23:09:19,678 INFO L85 PathProgramCache]: Analyzing trace with hash 409886432, now seen corresponding path program 1 times [2025-02-05 23:09:19,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 23:09:19,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383396747] [2025-02-05 23:09:19,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 23:09:19,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 23:09:19,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-02-05 23:09:19,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-02-05 23:09:19,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 23:09:19,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 23:09:19,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-02-05 23:09:19,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 23:09:19,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383396747] [2025-02-05 23:09:19,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383396747] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 23:09:19,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 23:09:19,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 23:09:19,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968206191] [2025-02-05 23:09:19,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 23:09:19,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 23:09:19,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 23:09:19,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 23:09:19,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 23:09:19,914 INFO L87 Difference]: Start difference. First operand 567 states and 897 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:09:20,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 23:09:20,141 INFO L93 Difference]: Finished difference Result 875 states and 1379 transitions. [2025-02-05 23:09:20,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 23:09:20,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2025-02-05 23:09:20,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 23:09:20,145 INFO L225 Difference]: With dead ends: 875 [2025-02-05 23:09:20,145 INFO L226 Difference]: Without dead ends: 551 [2025-02-05 23:09:20,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 23:09:20,146 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 106 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 23:09:20,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 437 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 23:09:20,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2025-02-05 23:09:20,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 523. [2025-02-05 23:09:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 420 states have (on average 1.4833333333333334) internal successors, (623), 420 states have internal predecessors, (623), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2025-02-05 23:09:20,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 821 transitions. [2025-02-05 23:09:20,187 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 821 transitions. Word has length 214 [2025-02-05 23:09:20,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 23:09:20,187 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 821 transitions. [2025-02-05 23:09:20,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:09:20,188 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 821 transitions. [2025-02-05 23:09:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-02-05 23:09:20,189 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 23:09:20,190 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:09:20,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 23:09:20,190 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 23:09:20,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 23:09:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1627756923, now seen corresponding path program 1 times [2025-02-05 23:09:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 23:09:20,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661154974] [2025-02-05 23:09:20,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 23:09:20,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 23:09:20,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-02-05 23:09:20,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-02-05 23:09:20,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 23:09:20,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 23:09:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-02-05 23:09:29,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 23:09:29,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661154974] [2025-02-05 23:09:29,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661154974] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 23:09:29,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 23:09:29,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-05 23:09:29,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633412746] [2025-02-05 23:09:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 23:09:29,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 23:09:29,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 23:09:29,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 23:09:29,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2025-02-05 23:09:29,533 INFO L87 Difference]: Start difference. First operand 523 states and 821 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:09:31,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 23:09:31,901 INFO L93 Difference]: Finished difference Result 688 states and 1061 transitions. [2025-02-05 23:09:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 23:09:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 214 [2025-02-05 23:09:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 23:09:31,909 INFO L225 Difference]: With dead ends: 688 [2025-02-05 23:09:31,909 INFO L226 Difference]: Without dead ends: 581 [2025-02-05 23:09:31,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2025-02-05 23:09:31,912 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 403 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-05 23:09:31,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1307 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-05 23:09:31,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2025-02-05 23:09:31,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 503. [2025-02-05 23:09:31,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 400 states have (on average 1.4825) internal successors, (593), 400 states have internal predecessors, (593), 99 states have call successors, (99), 3 states have call predecessors, (99), 3 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2025-02-05 23:09:31,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 791 transitions. [2025-02-05 23:09:31,946 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 791 transitions. Word has length 214 [2025-02-05 23:09:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 23:09:31,947 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 791 transitions. [2025-02-05 23:09:31,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-05 23:09:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 791 transitions. [2025-02-05 23:09:31,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-02-05 23:09:31,949 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 23:09:31,949 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:09:31,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 23:09:31,950 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 23:09:31,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 23:09:31,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1912496682, now seen corresponding path program 1 times [2025-02-05 23:09:31,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 23:09:31,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207275054] [2025-02-05 23:09:31,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 23:09:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 23:09:31,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-02-05 23:09:32,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-02-05 23:09:32,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 23:09:32,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat