./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 d8c08ca97dd545a810e8bc96a865afc430829cbfc14494ef87537262cc33351e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 11:20:26,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 11:20:26,394 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 11:20:26,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 11:20:26,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 11:20:26,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 11:20:26,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 11:20:26,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 11:20:26,421 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 11:20:26,421 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 11:20:26,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 11:20:26,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 11:20:26,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 11:20:26,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 11:20:26,423 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 11:20:26,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 11:20:26,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 11:20:26,423 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 11:20:26,423 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 11:20:26,423 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 11:20:26,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 11:20:26,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 11:20:26,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 11:20:26,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 11:20:26,425 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 11:20:26,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 11:20:26,425 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 11:20:26,425 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 11:20:26,426 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 11:20:26,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 11:20:26,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 11:20:26,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 11:20:26,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 11:20:26,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 11:20:26,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 11:20:26,426 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 11:20:26,426 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 11:20:26,426 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 11:20:26,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 11:20:26,426 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 11:20:26,426 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 11:20:26,427 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 11:20:26,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 11:20:26,427 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/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 -> d8c08ca97dd545a810e8bc96a865afc430829cbfc14494ef87537262cc33351e [2025-03-08 11:20:26,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 11:20:26,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 11:20:26,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 11:20:26,673 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 11:20:26,673 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 11:20:26,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2025-03-08 11:20:27,835 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/248c04a91/5c26681231c942f2acf11f2882de39e6/FLAG423af75c7 [2025-03-08 11:20:28,149 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 11:20:28,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2025-03-08 11:20:28,163 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/248c04a91/5c26681231c942f2acf11f2882de39e6/FLAG423af75c7 [2025-03-08 11:20:28,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/248c04a91/5c26681231c942f2acf11f2882de39e6 [2025-03-08 11:20:28,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 11:20:28,177 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 11:20:28,178 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 11:20:28,178 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 11:20:28,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 11:20:28,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96a702a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28, skipping insertion in model container [2025-03-08 11:20:28,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,214 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 11:20:28,325 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i[916,929] [2025-03-08 11:20:28,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 11:20:28,513 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 11:20:28,521 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-54.i[916,929] [2025-03-08 11:20:28,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 11:20:28,637 INFO L204 MainTranslator]: Completed translation [2025-03-08 11:20:28,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28 WrapperNode [2025-03-08 11:20:28,638 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 11:20:28,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 11:20:28,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 11:20:28,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 11:20:28,645 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,736 INFO L138 Inliner]: procedures = 26, calls = 128, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 862 [2025-03-08 11:20:28,737 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 11:20:28,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 11:20:28,738 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 11:20:28,738 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 11:20:28,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,759 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,790 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]. [2025-03-08 11:20:28,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,821 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 11:20:28,860 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 11:20:28,860 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 11:20:28,860 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 11:20:28,861 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (1/1) ... [2025-03-08 11:20:28,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 11:20:28,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:20:28,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 11:20:28,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 11:20:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 11:20:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 11:20:28,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 11:20:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 11:20:28,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 11:20:28,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 11:20:29,004 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 11:20:29,005 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 11:20:29,924 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-03-08 11:20:29,924 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 11:20:29,960 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 11:20:29,960 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 11:20:29,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 11:20:29 BoogieIcfgContainer [2025-03-08 11:20:29,961 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 11:20:29,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 11:20:29,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 11:20:29,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 11:20:29,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 11:20:28" (1/3) ... [2025-03-08 11:20:29,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d14eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 11:20:29, skipping insertion in model container [2025-03-08 11:20:29,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:20:28" (2/3) ... [2025-03-08 11:20:29,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d14eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 11:20:29, skipping insertion in model container [2025-03-08 11:20:29,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 11:20:29" (3/3) ... [2025-03-08 11:20:29,973 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-54.i [2025-03-08 11:20:29,984 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 11:20:29,987 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-54.i that has 2 procedures, 352 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 11:20:30,055 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 11:20:30,066 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;@69da08da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 11:20:30,067 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 11:20:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 352 states, 234 states have (on average 1.5726495726495726) internal successors, (368), 235 states have internal predecessors, (368), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2025-03-08 11:20:30,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2025-03-08 11:20:30,108 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:20:30,109 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:20:30,109 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:20:30,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:20:30,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1843541971, now seen corresponding path program 1 times [2025-03-08 11:20:30,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:20:30,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746686757] [2025-03-08 11:20:30,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:30,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:20:30,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-03-08 11:20:30,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-03-08 11:20:30,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:30,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 25992 trivial. 0 not checked. [2025-03-08 11:20:30,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:20:30,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746686757] [2025-03-08 11:20:30,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746686757] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:20:30,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806328531] [2025-03-08 11:20:30,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:30,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:20:30,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:20:30,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 11:20:30,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 11:20:30,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-03-08 11:20:31,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-03-08 11:20:31,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:31,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:31,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 11:20:31,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:20:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 25992 trivial. 0 not checked. [2025-03-08 11:20:31,221 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 11:20:31,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806328531] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:20:31,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 11:20:31,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 11:20:31,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735301573] [2025-03-08 11:20:31,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:20:31,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 11:20:31,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:20:31,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 11:20:31,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 11:20:31,258 INFO L87 Difference]: Start difference. First operand has 352 states, 234 states have (on average 1.5726495726495726) internal successors, (368), 235 states have internal predecessors, (368), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) [2025-03-08 11:20:31,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:20:31,367 INFO L93 Difference]: Finished difference Result 698 states and 1306 transitions. [2025-03-08 11:20:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 11:20:31,369 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) Word has length 721 [2025-03-08 11:20:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:20:31,376 INFO L225 Difference]: With dead ends: 698 [2025-03-08 11:20:31,376 INFO L226 Difference]: Without dead ends: 349 [2025-03-08 11:20:31,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 11:20:31,383 INFO L435 NwaCegarLoop]: 574 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 11:20:31,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 574 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 11:20:31,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2025-03-08 11:20:31,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2025-03-08 11:20:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 232 states have (on average 1.5560344827586208) internal successors, (361), 232 states have internal predecessors, (361), 115 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2025-03-08 11:20:31,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 591 transitions. [2025-03-08 11:20:31,455 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 591 transitions. Word has length 721 [2025-03-08 11:20:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:20:31,456 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 591 transitions. [2025-03-08 11:20:31,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 2 states have call successors, (115), 2 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 2 states have call successors, (115) [2025-03-08 11:20:31,456 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 591 transitions. [2025-03-08 11:20:31,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2025-03-08 11:20:31,469 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:20:31,470 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:20:31,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 11:20:31,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 11:20:31,674 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:20:31,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:20:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1310994456, now seen corresponding path program 1 times [2025-03-08 11:20:31,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:20:31,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287418425] [2025-03-08 11:20:31,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:31,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:20:31,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-03-08 11:20:31,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-03-08 11:20:31,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:31,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-03-08 11:20:32,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:20:32,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287418425] [2025-03-08 11:20:32,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287418425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:20:32,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:20:32,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 11:20:32,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859189258] [2025-03-08 11:20:32,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:20:32,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 11:20:32,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:20:32,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 11:20:32,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 11:20:32,488 INFO L87 Difference]: Start difference. First operand 349 states and 591 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-08 11:20:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:20:32,601 INFO L93 Difference]: Finished difference Result 883 states and 1499 transitions. [2025-03-08 11:20:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 11:20:32,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 721 [2025-03-08 11:20:32,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:20:32,611 INFO L225 Difference]: With dead ends: 883 [2025-03-08 11:20:32,612 INFO L226 Difference]: Without dead ends: 537 [2025-03-08 11:20:32,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 11:20:32,614 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 282 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 11:20:32,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 1128 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 11:20:32,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2025-03-08 11:20:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 534. [2025-03-08 11:20:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 372 states have (on average 1.5806451612903225) internal successors, (588), 373 states have internal predecessors, (588), 159 states have call successors, (159), 2 states have call predecessors, (159), 2 states have return successors, (159), 158 states have call predecessors, (159), 159 states have call successors, (159) [2025-03-08 11:20:32,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 906 transitions. [2025-03-08 11:20:32,662 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 906 transitions. Word has length 721 [2025-03-08 11:20:32,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:20:32,663 INFO L471 AbstractCegarLoop]: Abstraction has 534 states and 906 transitions. [2025-03-08 11:20:32,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-08 11:20:32,664 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 906 transitions. [2025-03-08 11:20:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 722 [2025-03-08 11:20:32,677 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:20:32,677 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:20:32,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 11:20:32,678 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:20:32,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:20:32,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1522345369, now seen corresponding path program 1 times [2025-03-08 11:20:32,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:20:32,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173400316] [2025-03-08 11:20:32,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:32,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:20:32,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 721 statements into 1 equivalence classes. [2025-03-08 11:20:32,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 721 of 721 statements. [2025-03-08 11:20:32,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:32,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-03-08 11:20:33,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:20:33,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173400316] [2025-03-08 11:20:33,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173400316] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:20:33,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:20:33,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 11:20:33,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723714661] [2025-03-08 11:20:33,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:20:33,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 11:20:33,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:20:33,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 11:20:33,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 11:20:33,486 INFO L87 Difference]: Start difference. First operand 534 states and 906 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-08 11:20:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:20:33,990 INFO L93 Difference]: Finished difference Result 1526 states and 2598 transitions. [2025-03-08 11:20:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 11:20:33,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 721 [2025-03-08 11:20:33,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:20:34,002 INFO L225 Difference]: With dead ends: 1526 [2025-03-08 11:20:34,003 INFO L226 Difference]: Without dead ends: 995 [2025-03-08 11:20:34,005 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 [2025-03-08 11:20:34,007 INFO L435 NwaCegarLoop]: 571 mSDtfsCounter, 572 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 11:20:34,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1705 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 11:20:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2025-03-08 11:20:34,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 965. [2025-03-08 11:20:34,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 686 states have (on average 1.6034985422740524) internal successors, (1100), 687 states have internal predecessors, (1100), 274 states have call successors, (274), 4 states have call predecessors, (274), 4 states have return successors, (274), 273 states have call predecessors, (274), 274 states have call successors, (274) [2025-03-08 11:20:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1648 transitions. [2025-03-08 11:20:34,101 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1648 transitions. Word has length 721 [2025-03-08 11:20:34,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:20:34,102 INFO L471 AbstractCegarLoop]: Abstraction has 965 states and 1648 transitions. [2025-03-08 11:20:34,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-08 11:20:34,103 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1648 transitions. [2025-03-08 11:20:34,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2025-03-08 11:20:34,108 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:20:34,108 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:20:34,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 11:20:34,108 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:20:34,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:20:34,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1183464034, now seen corresponding path program 1 times [2025-03-08 11:20:34,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:20:34,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57690407] [2025-03-08 11:20:34,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:34,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:20:34,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 722 statements into 1 equivalence classes. [2025-03-08 11:20:34,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 722 of 722 statements. [2025-03-08 11:20:34,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:34,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-03-08 11:20:34,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:20:34,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57690407] [2025-03-08 11:20:34,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57690407] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:20:34,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:20:34,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 11:20:34,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024606611] [2025-03-08 11:20:34,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:20:34,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 11:20:34,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:20:34,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 11:20:34,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 11:20:34,810 INFO L87 Difference]: Start difference. First operand 965 states and 1648 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-08 11:20:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:20:34,995 INFO L93 Difference]: Finished difference Result 2222 states and 3807 transitions. [2025-03-08 11:20:34,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 11:20:34,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 722 [2025-03-08 11:20:34,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:20:35,006 INFO L225 Difference]: With dead ends: 2222 [2025-03-08 11:20:35,007 INFO L226 Difference]: Without dead ends: 1651 [2025-03-08 11:20:35,010 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 [2025-03-08 11:20:35,011 INFO L435 NwaCegarLoop]: 623 mSDtfsCounter, 360 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 11:20:35,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1787 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 11:20:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2025-03-08 11:20:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2025-03-08 11:20:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1209 states have (on average 1.6228287841191067) internal successors, (1962), 1211 states have internal predecessors, (1962), 433 states have call successors, (433), 6 states have call predecessors, (433), 6 states have return successors, (433), 431 states have call predecessors, (433), 433 states have call successors, (433) [2025-03-08 11:20:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2828 transitions. [2025-03-08 11:20:35,181 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2828 transitions. Word has length 722 [2025-03-08 11:20:35,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:20:35,183 INFO L471 AbstractCegarLoop]: Abstraction has 1649 states and 2828 transitions. [2025-03-08 11:20:35,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-08 11:20:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2828 transitions. [2025-03-08 11:20:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2025-03-08 11:20:35,188 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:20:35,189 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:20:35,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 11:20:35,190 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:20:35,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:20:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash 988193846, now seen corresponding path program 1 times [2025-03-08 11:20:35,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:20:35,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457520977] [2025-03-08 11:20:35,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:35,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:20:35,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 723 statements into 1 equivalence classes. [2025-03-08 11:20:35,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 723 of 723 statements. [2025-03-08 11:20:35,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:35,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-03-08 11:20:36,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:20:36,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457520977] [2025-03-08 11:20:36,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457520977] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:20:36,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:20:36,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 11:20:36,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243514448] [2025-03-08 11:20:36,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:20:36,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 11:20:36,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:20:36,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 11:20:36,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 11:20:36,170 INFO L87 Difference]: Start difference. First operand 1649 states and 2828 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-08 11:20:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:20:36,992 INFO L93 Difference]: Finished difference Result 3757 states and 6435 transitions. [2025-03-08 11:20:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 11:20:36,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 723 [2025-03-08 11:20:36,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:20:37,008 INFO L225 Difference]: With dead ends: 3757 [2025-03-08 11:20:37,008 INFO L226 Difference]: Without dead ends: 2521 [2025-03-08 11:20:37,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 11:20:37,013 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 890 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 11:20:37,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 2650 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 11:20:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2025-03-08 11:20:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 1807. [2025-03-08 11:20:37,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1455 states have (on average 1.6900343642611684) internal successors, (2459), 1455 states have internal predecessors, (2459), 345 states have call successors, (345), 6 states have call predecessors, (345), 6 states have return successors, (345), 345 states have call predecessors, (345), 345 states have call successors, (345) [2025-03-08 11:20:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 3149 transitions. [2025-03-08 11:20:37,183 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 3149 transitions. Word has length 723 [2025-03-08 11:20:37,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:20:37,185 INFO L471 AbstractCegarLoop]: Abstraction has 1807 states and 3149 transitions. [2025-03-08 11:20:37,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-08 11:20:37,187 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 3149 transitions. [2025-03-08 11:20:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2025-03-08 11:20:37,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:20:37,193 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:20:37,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 11:20:37,193 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:20:37,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:20:37,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1074485970, now seen corresponding path program 1 times [2025-03-08 11:20:37,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:20:37,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030654233] [2025-03-08 11:20:37,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:37,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:20:37,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-03-08 11:20:37,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-03-08 11:20:37,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:37,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 165 proven. 177 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-08 11:20:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:20:38,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030654233] [2025-03-08 11:20:38,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030654233] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:20:38,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618356970] [2025-03-08 11:20:38,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:38,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:20:38,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:20:38,649 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 11:20:38,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 11:20:38,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-03-08 11:20:38,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-03-08 11:20:38,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:38,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:38,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 11:20:39,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:20:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 13204 proven. 177 refuted. 0 times theorem prover too weak. 12839 trivial. 0 not checked. [2025-03-08 11:20:39,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 11:20:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 165 proven. 177 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-08 11:20:40,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618356970] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 11:20:40,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 11:20:40,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-08 11:20:40,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354832034] [2025-03-08 11:20:40,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 11:20:40,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 11:20:40,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:20:40,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 11:20:40,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-03-08 11:20:40,105 INFO L87 Difference]: Start difference. First operand 1807 states and 3149 transitions. Second operand has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 3 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 3 states have call predecessors, (234), 3 states have call successors, (234) [2025-03-08 11:20:43,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:20:43,647 INFO L93 Difference]: Finished difference Result 5927 states and 10239 transitions. [2025-03-08 11:20:43,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-03-08 11:20:43,648 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 3 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 3 states have call predecessors, (234), 3 states have call successors, (234) Word has length 724 [2025-03-08 11:20:43,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:20:43,675 INFO L225 Difference]: With dead ends: 5927 [2025-03-08 11:20:43,675 INFO L226 Difference]: Without dead ends: 5345 [2025-03-08 11:20:43,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1496 GetRequests, 1446 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=629, Invalid=2023, Unknown=0, NotChecked=0, Total=2652 [2025-03-08 11:20:43,682 INFO L435 NwaCegarLoop]: 585 mSDtfsCounter, 1668 mSDsluCounter, 4432 mSDsCounter, 0 mSdLazyCounter, 4292 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 5017 SdHoareTripleChecker+Invalid, 5005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 4292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-03-08 11:20:43,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 5017 Invalid, 5005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 4292 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-03-08 11:20:43,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2025-03-08 11:20:43,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 4877. [2025-03-08 11:20:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4877 states, 4137 states have (on average 1.7135605511240029) internal successors, (7089), 4143 states have internal predecessors, (7089), 709 states have call successors, (709), 30 states have call predecessors, (709), 30 states have return successors, (709), 703 states have call predecessors, (709), 709 states have call successors, (709) [2025-03-08 11:20:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 8507 transitions. [2025-03-08 11:20:43,889 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 8507 transitions. Word has length 724 [2025-03-08 11:20:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:20:43,890 INFO L471 AbstractCegarLoop]: Abstraction has 4877 states and 8507 transitions. [2025-03-08 11:20:43,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 16.176470588235293) internal successors, (275), 17 states have internal predecessors, (275), 3 states have call successors, (233), 2 states have call predecessors, (233), 4 states have return successors, (234), 3 states have call predecessors, (234), 3 states have call successors, (234) [2025-03-08 11:20:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 8507 transitions. [2025-03-08 11:20:43,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2025-03-08 11:20:43,897 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:20:43,897 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:20:43,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 11:20:44,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-08 11:20:44,101 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:20:44,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:20:44,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1514101533, now seen corresponding path program 1 times [2025-03-08 11:20:44,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:20:44,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638911249] [2025-03-08 11:20:44,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:44,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:20:44,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-03-08 11:20:44,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-03-08 11:20:44,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:44,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:45,939 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 108 proven. 234 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-08 11:20:45,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:20:45,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638911249] [2025-03-08 11:20:45,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638911249] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:20:45,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710441002] [2025-03-08 11:20:45,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:45,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:20:45,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:20:45,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 11:20:45,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 11:20:46,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 724 statements into 1 equivalence classes. [2025-03-08 11:20:46,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 724 of 724 statements. [2025-03-08 11:20:46,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:46,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:46,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 11:20:46,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:20:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 14881 proven. 324 refuted. 0 times theorem prover too weak. 11015 trivial. 0 not checked. [2025-03-08 11:20:47,206 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 11:20:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 165 proven. 177 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-08 11:20:47,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710441002] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 11:20:47,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 11:20:47,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 7] total 24 [2025-03-08 11:20:47,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325201932] [2025-03-08 11:20:47,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 11:20:47,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-08 11:20:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:20:47,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-08 11:20:47,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2025-03-08 11:20:47,885 INFO L87 Difference]: Start difference. First operand 4877 states and 8507 transitions. Second operand has 24 states, 24 states have (on average 15.25) internal successors, (366), 24 states have internal predecessors, (366), 7 states have call successors, (289), 3 states have call predecessors, (289), 6 states have return successors, (290), 7 states have call predecessors, (290), 7 states have call successors, (290) [2025-03-08 11:20:55,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:20:55,274 INFO L93 Difference]: Finished difference Result 13161 states and 22831 transitions. [2025-03-08 11:20:55,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2025-03-08 11:20:55,275 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 15.25) internal successors, (366), 24 states have internal predecessors, (366), 7 states have call successors, (289), 3 states have call predecessors, (289), 6 states have return successors, (290), 7 states have call predecessors, (290), 7 states have call successors, (290) Word has length 724 [2025-03-08 11:20:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:20:55,307 INFO L225 Difference]: With dead ends: 13161 [2025-03-08 11:20:55,307 INFO L226 Difference]: Without dead ends: 8498 [2025-03-08 11:20:55,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1451 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3924 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2311, Invalid=9245, Unknown=0, NotChecked=0, Total=11556 [2025-03-08 11:20:55,319 INFO L435 NwaCegarLoop]: 897 mSDtfsCounter, 8636 mSDsluCounter, 6919 mSDsCounter, 0 mSdLazyCounter, 7586 mSolverCounterSat, 3591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8690 SdHoareTripleChecker+Valid, 7816 SdHoareTripleChecker+Invalid, 11177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3591 IncrementalHoareTripleChecker+Valid, 7586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2025-03-08 11:20:55,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8690 Valid, 7816 Invalid, 11177 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3591 Valid, 7586 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2025-03-08 11:20:55,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8498 states. [2025-03-08 11:20:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8498 to 6089. [2025-03-08 11:20:55,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6089 states, 5494 states have (on average 1.7489989078995267) internal successors, (9609), 5498 states have internal predecessors, (9609), 561 states have call successors, (561), 33 states have call predecessors, (561), 33 states have return successors, (561), 557 states have call predecessors, (561), 561 states have call successors, (561) [2025-03-08 11:20:55,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 10731 transitions. [2025-03-08 11:20:55,583 INFO L78 Accepts]: Start accepts. Automaton has 6089 states and 10731 transitions. Word has length 724 [2025-03-08 11:20:55,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:20:55,585 INFO L471 AbstractCegarLoop]: Abstraction has 6089 states and 10731 transitions. [2025-03-08 11:20:55,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 15.25) internal successors, (366), 24 states have internal predecessors, (366), 7 states have call successors, (289), 3 states have call predecessors, (289), 6 states have return successors, (290), 7 states have call predecessors, (290), 7 states have call successors, (290) [2025-03-08 11:20:55,589 INFO L276 IsEmpty]: Start isEmpty. Operand 6089 states and 10731 transitions. [2025-03-08 11:20:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2025-03-08 11:20:55,599 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:20:55,599 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:20:55,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 11:20:55,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:20:55,800 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:20:55,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:20:55,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1834729893, now seen corresponding path program 1 times [2025-03-08 11:20:55,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:20:55,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740065512] [2025-03-08 11:20:55,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:55,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:20:55,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 725 statements into 1 equivalence classes. [2025-03-08 11:20:56,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 725 of 725 statements. [2025-03-08 11:20:56,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:56,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 186 proven. 156 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-08 11:20:56,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:20:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740065512] [2025-03-08 11:20:56,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740065512] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:20:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906950418] [2025-03-08 11:20:56,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:56,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:20:56,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:20:56,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 11:20:56,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 11:20:56,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 725 statements into 1 equivalence classes. [2025-03-08 11:20:56,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 725 of 725 statements. [2025-03-08 11:20:56,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:56,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:20:56,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 11:20:56,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:20:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 10774 proven. 96 refuted. 0 times theorem prover too weak. 15350 trivial. 0 not checked. [2025-03-08 11:20:57,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 11:20:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 246 proven. 96 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-08 11:20:57,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906950418] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 11:20:57,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 11:20:57,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2025-03-08 11:20:57,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287174381] [2025-03-08 11:20:57,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 11:20:57,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 11:20:57,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:20:57,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 11:20:57,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-08 11:20:57,722 INFO L87 Difference]: Start difference. First operand 6089 states and 10731 transitions. Second operand has 11 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 4 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 4 states have call predecessors, (201), 4 states have call successors, (201) [2025-03-08 11:20:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:20:59,290 INFO L93 Difference]: Finished difference Result 15882 states and 27759 transitions. [2025-03-08 11:20:59,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 11:20:59,294 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 4 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 4 states have call predecessors, (201), 4 states have call successors, (201) Word has length 725 [2025-03-08 11:20:59,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:20:59,323 INFO L225 Difference]: With dead ends: 15882 [2025-03-08 11:20:59,324 INFO L226 Difference]: Without dead ends: 10407 [2025-03-08 11:20:59,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1478 GetRequests, 1447 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=742, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 11:20:59,333 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 2208 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 1603 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1603 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 11:20:59,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2208 Valid, 1642 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1603 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 11:20:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2025-03-08 11:20:59,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 10271. [2025-03-08 11:20:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10271 states, 9265 states have (on average 1.7202374527792768) internal successors, (15938), 9275 states have internal predecessors, (15938), 921 states have call successors, (921), 84 states have call predecessors, (921), 84 states have return successors, (921), 911 states have call predecessors, (921), 921 states have call successors, (921) [2025-03-08 11:20:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10271 states to 10271 states and 17780 transitions. [2025-03-08 11:20:59,712 INFO L78 Accepts]: Start accepts. Automaton has 10271 states and 17780 transitions. Word has length 725 [2025-03-08 11:20:59,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:20:59,713 INFO L471 AbstractCegarLoop]: Abstraction has 10271 states and 17780 transitions. [2025-03-08 11:20:59,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.0) internal successors, (286), 11 states have internal predecessors, (286), 4 states have call successors, (199), 2 states have call predecessors, (199), 4 states have return successors, (201), 4 states have call predecessors, (201), 4 states have call successors, (201) [2025-03-08 11:20:59,713 INFO L276 IsEmpty]: Start isEmpty. Operand 10271 states and 17780 transitions. [2025-03-08 11:20:59,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2025-03-08 11:20:59,722 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:20:59,723 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:20:59,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 11:20:59,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:20:59,924 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:20:59,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:20:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1023909421, now seen corresponding path program 1 times [2025-03-08 11:20:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:20:59,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139107298] [2025-03-08 11:20:59,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:20:59,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:20:59,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 726 statements into 1 equivalence classes. [2025-03-08 11:20:59,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 726 of 726 statements. [2025-03-08 11:20:59,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:20:59,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:21:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26220 trivial. 0 not checked. [2025-03-08 11:21:00,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:21:00,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139107298] [2025-03-08 11:21:00,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139107298] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:21:00,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:21:00,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 11:21:00,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827021500] [2025-03-08 11:21:00,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:21:00,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 11:21:00,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:21:00,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 11:21:00,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 11:21:00,106 INFO L87 Difference]: Start difference. First operand 10271 states and 17780 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-08 11:21:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:21:00,703 INFO L93 Difference]: Finished difference Result 28583 states and 49647 transitions. [2025-03-08 11:21:00,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 11:21:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) Word has length 726 [2025-03-08 11:21:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:21:00,749 INFO L225 Difference]: With dead ends: 28583 [2025-03-08 11:21:00,749 INFO L226 Difference]: Without dead ends: 19318 [2025-03-08 11:21:00,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 11:21:00,759 INFO L435 NwaCegarLoop]: 907 mSDtfsCounter, 356 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 11:21:00,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1456 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 11:21:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19318 states. [2025-03-08 11:21:01,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19318 to 19308. [2025-03-08 11:21:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19308 states, 17734 states have (on average 1.7063832186759895) internal successors, (30261), 17756 states have internal predecessors, (30261), 1449 states have call successors, (1449), 124 states have call predecessors, (1449), 124 states have return successors, (1449), 1427 states have call predecessors, (1449), 1449 states have call successors, (1449) [2025-03-08 11:21:01,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19308 states to 19308 states and 33159 transitions. [2025-03-08 11:21:01,348 INFO L78 Accepts]: Start accepts. Automaton has 19308 states and 33159 transitions. Word has length 726 [2025-03-08 11:21:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:21:01,349 INFO L471 AbstractCegarLoop]: Abstraction has 19308 states and 33159 transitions. [2025-03-08 11:21:01,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (115), 1 states have call predecessors, (115), 1 states have return successors, (115), 1 states have call predecessors, (115), 1 states have call successors, (115) [2025-03-08 11:21:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 19308 states and 33159 transitions. [2025-03-08 11:21:01,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2025-03-08 11:21:01,365 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:21:01,365 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:21:01,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 11:21:01,365 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:21:01,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:21:01,366 INFO L85 PathProgramCache]: Analyzing trace with hash -911750866, now seen corresponding path program 1 times [2025-03-08 11:21:01,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:21:01,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465733462] [2025-03-08 11:21:01,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:21:01,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:21:01,448 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 726 statements into 1 equivalence classes. [2025-03-08 11:21:01,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 726 of 726 statements. [2025-03-08 11:21:01,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:21:01,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:21:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 204 proven. 138 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-08 11:21:01,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:21:01,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465733462] [2025-03-08 11:21:01,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465733462] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:21:01,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954564079] [2025-03-08 11:21:01,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:21:01,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:21:01,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:21:01,961 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 11:21:01,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 11:21:02,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 726 statements into 1 equivalence classes. [2025-03-08 11:21:02,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 726 of 726 statements. [2025-03-08 11:21:02,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:21:02,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:21:02,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 11:21:02,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:21:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 13244 proven. 354 refuted. 0 times theorem prover too weak. 12622 trivial. 0 not checked. [2025-03-08 11:21:03,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 11:21:03,787 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 324 proven. 357 refuted. 0 times theorem prover too weak. 25539 trivial. 0 not checked. [2025-03-08 11:21:03,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954564079] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 11:21:03,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 11:21:03,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2025-03-08 11:21:03,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228540701] [2025-03-08 11:21:03,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 11:21:03,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 11:21:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:21:03,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 11:21:03,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2025-03-08 11:21:03,790 INFO L87 Difference]: Start difference. First operand 19308 states and 33159 transitions. Second operand has 15 states, 14 states have (on average 21.928571428571427) internal successors, (307), 13 states have internal predecessors, (307), 6 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-03-08 11:21:05,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:21:05,250 INFO L93 Difference]: Finished difference Result 27121 states and 46359 transitions. [2025-03-08 11:21:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-08 11:21:05,250 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 21.928571428571427) internal successors, (307), 13 states have internal predecessors, (307), 6 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) Word has length 726 [2025-03-08 11:21:05,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:21:05,276 INFO L225 Difference]: With dead ends: 27121 [2025-03-08 11:21:05,277 INFO L226 Difference]: Without dead ends: 10173 [2025-03-08 11:21:05,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1443 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2025-03-08 11:21:05,299 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 1220 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 11:21:05,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 2040 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 11:21:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10173 states. [2025-03-08 11:21:05,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10173 to 6557. [2025-03-08 11:21:05,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6557 states, 5625 states have (on average 1.6366222222222222) internal successors, (9206), 5635 states have internal predecessors, (9206), 849 states have call successors, (849), 82 states have call predecessors, (849), 82 states have return successors, (849), 839 states have call predecessors, (849), 849 states have call successors, (849) [2025-03-08 11:21:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6557 states to 6557 states and 10904 transitions. [2025-03-08 11:21:05,646 INFO L78 Accepts]: Start accepts. Automaton has 6557 states and 10904 transitions. Word has length 726 [2025-03-08 11:21:05,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:21:05,647 INFO L471 AbstractCegarLoop]: Abstraction has 6557 states and 10904 transitions. [2025-03-08 11:21:05,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 21.928571428571427) internal successors, (307), 13 states have internal predecessors, (307), 6 states have call successors, (235), 3 states have call predecessors, (235), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-03-08 11:21:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 6557 states and 10904 transitions. [2025-03-08 11:21:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2025-03-08 11:21:05,654 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:21:05,655 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:21:05,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 11:21:05,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-08 11:21:05,856 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:21:05,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:21:05,857 INFO L85 PathProgramCache]: Analyzing trace with hash 89658190, now seen corresponding path program 1 times [2025-03-08 11:21:05,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:21:05,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611202868] [2025-03-08 11:21:05,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:21:05,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:21:05,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-08 11:21:06,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-08 11:21:06,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:21:06,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:21:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 180 proven. 162 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-08 11:21:06,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:21:06,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611202868] [2025-03-08 11:21:06,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611202868] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:21:06,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689646042] [2025-03-08 11:21:06,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:21:06,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:21:06,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:21:06,463 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 11:21:06,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 11:21:06,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-08 11:21:06,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-08 11:21:06,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:21:06,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:21:06,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 11:21:06,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:21:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 11108 proven. 111 refuted. 0 times theorem prover too weak. 15001 trivial. 0 not checked. [2025-03-08 11:21:07,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 11:21:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 567 proven. 114 refuted. 0 times theorem prover too weak. 25539 trivial. 0 not checked. [2025-03-08 11:21:07,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689646042] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 11:21:07,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 11:21:07,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 20 [2025-03-08 11:21:07,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77775643] [2025-03-08 11:21:07,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 11:21:07,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-08 11:21:07,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:21:07,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-08 11:21:07,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-03-08 11:21:07,578 INFO L87 Difference]: Start difference. First operand 6557 states and 10904 transitions. Second operand has 20 states, 20 states have (on average 16.35) internal successors, (327), 20 states have internal predecessors, (327), 7 states have call successors, (199), 3 states have call predecessors, (199), 7 states have return successors, (201), 7 states have call predecessors, (201), 7 states have call successors, (201) [2025-03-08 11:21:09,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:21:09,498 INFO L93 Difference]: Finished difference Result 18171 states and 30187 transitions. [2025-03-08 11:21:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-08 11:21:09,498 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 16.35) internal successors, (327), 20 states have internal predecessors, (327), 7 states have call successors, (199), 3 states have call predecessors, (199), 7 states have return successors, (201), 7 states have call predecessors, (201), 7 states have call successors, (201) Word has length 727 [2025-03-08 11:21:09,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:21:09,530 INFO L225 Difference]: With dead ends: 18171 [2025-03-08 11:21:09,531 INFO L226 Difference]: Without dead ends: 12087 [2025-03-08 11:21:09,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1484 GetRequests, 1443 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=497, Invalid=1309, Unknown=0, NotChecked=0, Total=1806 [2025-03-08 11:21:09,542 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 2293 mSDsluCounter, 2036 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2294 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 3451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 943 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-08 11:21:09,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2294 Valid, 2542 Invalid, 3451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [943 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-08 11:21:09,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12087 states. [2025-03-08 11:21:09,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12087 to 9895. [2025-03-08 11:21:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9895 states, 8942 states have (on average 1.6630507716394543) internal successors, (14871), 8952 states have internal predecessors, (14871), 849 states have call successors, (849), 103 states have call predecessors, (849), 103 states have return successors, (849), 839 states have call predecessors, (849), 849 states have call successors, (849) [2025-03-08 11:21:10,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9895 states to 9895 states and 16569 transitions. [2025-03-08 11:21:10,013 INFO L78 Accepts]: Start accepts. Automaton has 9895 states and 16569 transitions. Word has length 727 [2025-03-08 11:21:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:21:10,014 INFO L471 AbstractCegarLoop]: Abstraction has 9895 states and 16569 transitions. [2025-03-08 11:21:10,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.35) internal successors, (327), 20 states have internal predecessors, (327), 7 states have call successors, (199), 3 states have call predecessors, (199), 7 states have return successors, (201), 7 states have call predecessors, (201), 7 states have call successors, (201) [2025-03-08 11:21:10,014 INFO L276 IsEmpty]: Start isEmpty. Operand 9895 states and 16569 transitions. [2025-03-08 11:21:10,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2025-03-08 11:21:10,023 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:21:10,023 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:21:10,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 11:21:10,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:21:10,224 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:21:10,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:21:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1107039989, now seen corresponding path program 1 times [2025-03-08 11:21:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:21:10,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487976731] [2025-03-08 11:21:10,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:21:10,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:21:10,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-08 11:21:10,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-08 11:21:10,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:21:10,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:21:10,799 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 219 proven. 123 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-08 11:21:10,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:21:10,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487976731] [2025-03-08 11:21:10,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487976731] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:21:10,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376652444] [2025-03-08 11:21:10,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:21:10,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:21:10,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:21:10,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 11:21:10,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 11:21:10,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-08 11:21:11,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-08 11:21:11,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:21:11,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:21:11,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 1618 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 11:21:11,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:21:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 16896 proven. 90 refuted. 0 times theorem prover too weak. 9234 trivial. 0 not checked. [2025-03-08 11:21:11,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 11:21:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 252 proven. 90 refuted. 0 times theorem prover too weak. 25878 trivial. 0 not checked. [2025-03-08 11:21:11,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376652444] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 11:21:11,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 11:21:11,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2025-03-08 11:21:11,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643034911] [2025-03-08 11:21:11,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 11:21:11,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 11:21:11,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:21:11,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 11:21:11,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-03-08 11:21:11,917 INFO L87 Difference]: Start difference. First operand 9895 states and 16569 transitions. Second operand has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 6 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-03-08 11:21:13,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:21:13,227 INFO L93 Difference]: Finished difference Result 15867 states and 26336 transitions. [2025-03-08 11:21:13,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 11:21:13,228 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 6 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) Word has length 727 [2025-03-08 11:21:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:21:13,250 INFO L225 Difference]: With dead ends: 15867 [2025-03-08 11:21:13,251 INFO L226 Difference]: Without dead ends: 6745 [2025-03-08 11:21:13,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1469 GetRequests, 1448 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2025-03-08 11:21:13,263 INFO L435 NwaCegarLoop]: 415 mSDtfsCounter, 1508 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 11:21:13,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1311 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 11:21:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6745 states. [2025-03-08 11:21:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6745 to 6641. [2025-03-08 11:21:13,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6641 states, 5683 states have (on average 1.6076016188632765) internal successors, (9136), 5693 states have internal predecessors, (9136), 849 states have call successors, (849), 108 states have call predecessors, (849), 108 states have return successors, (849), 839 states have call predecessors, (849), 849 states have call successors, (849) [2025-03-08 11:21:13,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6641 states to 6641 states and 10834 transitions. [2025-03-08 11:21:13,920 INFO L78 Accepts]: Start accepts. Automaton has 6641 states and 10834 transitions. Word has length 727 [2025-03-08 11:21:13,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:21:13,921 INFO L471 AbstractCegarLoop]: Abstraction has 6641 states and 10834 transitions. [2025-03-08 11:21:13,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 6 states have call successors, (237), 3 states have call predecessors, (237), 6 states have return successors, (237), 6 states have call predecessors, (237), 6 states have call successors, (237) [2025-03-08 11:21:13,922 INFO L276 IsEmpty]: Start isEmpty. Operand 6641 states and 10834 transitions. [2025-03-08 11:21:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2025-03-08 11:21:13,931 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:21:13,931 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:21:13,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 11:21:14,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:21:14,132 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:21:14,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:21:14,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1872390537, now seen corresponding path program 1 times [2025-03-08 11:21:14,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:21:14,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060940438] [2025-03-08 11:21:14,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:21:14,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:21:14,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-08 11:21:14,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-08 11:21:14,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:21:14,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:21:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 510 proven. 498 refuted. 0 times theorem prover too weak. 25212 trivial. 0 not checked. [2025-03-08 11:21:15,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:21:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060940438] [2025-03-08 11:21:15,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060940438] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:21:15,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584651636] [2025-03-08 11:21:15,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:21:15,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:21:15,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:21:15,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 11:21:15,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 11:21:15,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 727 statements into 1 equivalence classes. [2025-03-08 11:21:15,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 727 of 727 statements. [2025-03-08 11:21:15,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:21:15,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:21:15,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-03-08 11:21:15,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:21:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 19330 proven. 837 refuted. 0 times theorem prover too weak. 6053 trivial. 0 not checked. [2025-03-08 11:21:18,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 11:21:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 900 proven. 780 refuted. 0 times theorem prover too weak. 24540 trivial. 0 not checked. [2025-03-08 11:21:21,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584651636] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 11:21:21,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 11:21:21,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 23, 22] total 49 [2025-03-08 11:21:21,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689805239] [2025-03-08 11:21:21,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 11:21:21,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-08 11:21:21,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:21:21,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-08 11:21:21,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=1878, Unknown=0, NotChecked=0, Total=2352 [2025-03-08 11:21:21,416 INFO L87 Difference]: Start difference. First operand 6641 states and 10834 transitions. Second operand has 49 states, 48 states have (on average 7.708333333333333) internal successors, (370), 47 states have internal predecessors, (370), 14 states have call successors, (253), 7 states have call predecessors, (253), 16 states have return successors, (255), 14 states have call predecessors, (255), 14 states have call successors, (255) [2025-03-08 11:21:32,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:21:32,208 INFO L93 Difference]: Finished difference Result 21271 states and 34276 transitions. [2025-03-08 11:21:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2025-03-08 11:21:32,209 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 7.708333333333333) internal successors, (370), 47 states have internal predecessors, (370), 14 states have call successors, (253), 7 states have call predecessors, (253), 16 states have return successors, (255), 14 states have call predecessors, (255), 14 states have call successors, (255) Word has length 727 [2025-03-08 11:21:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:21:32,255 INFO L225 Difference]: With dead ends: 21271 [2025-03-08 11:21:32,255 INFO L226 Difference]: Without dead ends: 16747 [2025-03-08 11:21:32,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1600 GetRequests, 1431 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10365 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6209, Invalid=22861, Unknown=0, NotChecked=0, Total=29070 [2025-03-08 11:21:32,273 INFO L435 NwaCegarLoop]: 659 mSDtfsCounter, 6174 mSDsluCounter, 4983 mSDsCounter, 0 mSdLazyCounter, 7168 mSolverCounterSat, 3520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6209 SdHoareTripleChecker+Valid, 5642 SdHoareTripleChecker+Invalid, 10688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3520 IncrementalHoareTripleChecker+Valid, 7168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2025-03-08 11:21:32,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6209 Valid, 5642 Invalid, 10688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3520 Valid, 7168 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2025-03-08 11:21:32,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16747 states. [2025-03-08 11:21:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16747 to 6857. [2025-03-08 11:21:32,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6857 states, 6076 states have (on average 1.630348913759052) internal successors, (9906), 6084 states have internal predecessors, (9906), 685 states have call successors, (685), 95 states have call predecessors, (685), 95 states have return successors, (685), 677 states have call predecessors, (685), 685 states have call successors, (685) [2025-03-08 11:21:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6857 states to 6857 states and 11276 transitions. [2025-03-08 11:21:32,835 INFO L78 Accepts]: Start accepts. Automaton has 6857 states and 11276 transitions. Word has length 727 [2025-03-08 11:21:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:21:32,836 INFO L471 AbstractCegarLoop]: Abstraction has 6857 states and 11276 transitions. [2025-03-08 11:21:32,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 7.708333333333333) internal successors, (370), 47 states have internal predecessors, (370), 14 states have call successors, (253), 7 states have call predecessors, (253), 16 states have return successors, (255), 14 states have call predecessors, (255), 14 states have call successors, (255) [2025-03-08 11:21:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 6857 states and 11276 transitions. [2025-03-08 11:21:32,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2025-03-08 11:21:32,842 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:21:32,843 INFO L218 NwaCegarLoop]: trace histogram [115, 115, 115, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 11:21:32,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 11:21:33,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-08 11:21:33,047 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:21:33,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:21:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1291894857, now seen corresponding path program 1 times [2025-03-08 11:21:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:21:33,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027216072] [2025-03-08 11:21:33,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:21:33,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:21:33,070 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 728 statements into 1 equivalence classes. [2025-03-08 11:21:33,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 728 of 728 statements. [2025-03-08 11:21:33,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:21:33,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:21:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 885 proven. 447 refuted. 0 times theorem prover too weak. 24888 trivial. 0 not checked. [2025-03-08 11:21:34,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:21:34,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027216072] [2025-03-08 11:21:34,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027216072] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:21:34,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303187544] [2025-03-08 11:21:34,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:21:34,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:21:34,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:21:34,817 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 11:21:34,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 11:21:35,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 728 statements into 1 equivalence classes. [2025-03-08 11:21:35,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 728 of 728 statements. [2025-03-08 11:21:35,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:21:35,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:21:35,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 1615 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-03-08 11:21:35,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:21:38,344 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 16576 proven. 936 refuted. 0 times theorem prover too weak. 8708 trivial. 0 not checked. [2025-03-08 11:21:38,345 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 11:21:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 26220 backedges. 963 proven. 717 refuted. 0 times theorem prover too weak. 24540 trivial. 0 not checked. [2025-03-08 11:21:40,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303187544] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 11:21:40,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 11:21:40,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26, 21] total 53 [2025-03-08 11:21:40,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573601140] [2025-03-08 11:21:40,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 11:21:40,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-03-08 11:21:40,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:21:40,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-03-08 11:21:40,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=2162, Unknown=0, NotChecked=0, Total=2756 [2025-03-08 11:21:40,930 INFO L87 Difference]: Start difference. First operand 6857 states and 11276 transitions. Second operand has 53 states, 50 states have (on average 7.42) internal successors, (371), 47 states have internal predecessors, (371), 19 states have call successors, (234), 8 states have call predecessors, (234), 15 states have return successors, (236), 19 states have call predecessors, (236), 19 states have call successors, (236)