./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label20.c -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 f135ddf41791de61b2d6990344a7ec64104348ebc3877909c56fd71d04c40aca --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:27:45,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:27:45,671 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:27:45,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:27:45,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:27:45,700 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:27:45,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:27:45,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:27:45,701 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:27:45,701 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:27:45,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:27:45,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:27:45,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:27:45,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:27:45,703 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:27:45,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:27:45,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:27:45,708 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:27:45,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:27:45,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:27:45,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:27:45,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:27:45,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:27:45,711 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:27:45,711 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:27:45,711 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:27:45,711 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:27:45,712 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:27:45,712 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:27:45,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:27:45,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:27:45,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:27:45,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:27:45,713 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:27:45,713 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:27:45,713 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:27:45,713 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:27:45,713 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:27:45,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:27:45,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:27:45,714 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:27:45,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:27:45,717 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f135ddf41791de61b2d6990344a7ec64104348ebc3877909c56fd71d04c40aca [2024-10-12 16:27:45,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:27:45,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:27:45,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:27:45,964 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:27:45,964 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:27:45,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label20.c [2024-10-12 16:27:47,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:27:47,659 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:27:47,660 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label20.c [2024-10-12 16:27:47,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb0cb862/9394037fbc76446aa0aa77a1c1d494cb/FLAGb1d7e0494 [2024-10-12 16:27:47,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb0cb862/9394037fbc76446aa0aa77a1c1d494cb [2024-10-12 16:27:47,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:27:47,949 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:27:47,950 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:27:47,950 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:27:47,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:27:47,955 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:27:47" (1/1) ... [2024-10-12 16:27:47,956 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59437faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:47, skipping insertion in model container [2024-10-12 16:27:47,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:27:47" (1/1) ... [2024-10-12 16:27:48,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:27:48,215 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label20.c[4104,4117] [2024-10-12 16:27:48,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:27:48,704 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:27:48,719 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label20.c[4104,4117] [2024-10-12 16:27:48,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:27:48,929 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:27:48,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48 WrapperNode [2024-10-12 16:27:48,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:27:48,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:27:48,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:27:48,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:27:48,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:48,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:49,141 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-12 16:27:49,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:27:49,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:27:49,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:27:49,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:27:49,151 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:49,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:49,177 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:49,372 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]. [2024-10-12 16:27:49,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:49,376 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:49,602 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:49,622 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:49,642 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:49,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:49,682 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:27:49,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:27:49,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:27:49,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:27:49,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (1/1) ... [2024-10-12 16:27:49,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:27:49,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:27:49,746 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) [2024-10-12 16:27:49,749 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 [2024-10-12 16:27:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:27:49,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:27:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:27:49,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:27:49,863 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:27:49,864 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:27:52,816 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-12 16:27:52,819 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:27:52,882 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:27:52,883 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:27:52,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:27:52 BoogieIcfgContainer [2024-10-12 16:27:52,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:27:52,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:27:52,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:27:52,891 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:27:52,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:27:47" (1/3) ... [2024-10-12 16:27:52,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c283df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:27:52, skipping insertion in model container [2024-10-12 16:27:52,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:27:48" (2/3) ... [2024-10-12 16:27:52,892 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c283df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:27:52, skipping insertion in model container [2024-10-12 16:27:52,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:27:52" (3/3) ... [2024-10-12 16:27:52,896 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label20.c [2024-10-12 16:27:52,919 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:27:52,920 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:27:53,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:27:53,025 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;@339000c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:27:53,027 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:27:53,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:53,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 16:27:53,040 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:53,041 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:27:53,041 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:53,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1421225338, now seen corresponding path program 1 times [2024-10-12 16:27:53,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:53,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899257006] [2024-10-12 16:27:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:53,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:53,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:53,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899257006] [2024-10-12 16:27:53,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899257006] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:53,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:53,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:27:53,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869511717] [2024-10-12 16:27:53,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:53,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:27:53,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:53,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:27:53,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:27:53,191 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:53,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:53,245 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-12 16:27:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:27:53,250 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-12 16:27:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:53,261 INFO L225 Difference]: With dead ends: 1055 [2024-10-12 16:27:53,261 INFO L226 Difference]: Without dead ends: 526 [2024-10-12 16:27:53,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:27:53,267 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:53,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:27:53,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-12 16:27:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-12 16:27:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-12 16:27:53,332 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 25 [2024-10-12 16:27:53,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:53,332 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-12 16:27:53,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-12 16:27:53,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-12 16:27:53,333 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:53,333 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:27:53,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:27:53,334 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:53,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1879275358, now seen corresponding path program 1 times [2024-10-12 16:27:53,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:53,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427830673] [2024-10-12 16:27:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:53,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:53,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:53,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427830673] [2024-10-12 16:27:53,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427830673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:53,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:53,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:27:53,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785292552] [2024-10-12 16:27:53,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:53,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:53,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:53,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:53,493 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:55,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:55,635 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2024-10-12 16:27:55,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:55,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-10-12 16:27:55,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:55,644 INFO L225 Difference]: With dead ends: 1501 [2024-10-12 16:27:55,644 INFO L226 Difference]: Without dead ends: 976 [2024-10-12 16:27:55,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:55,647 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 446 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:55,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-12 16:27:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-10-12 16:27:55,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2024-10-12 16:27:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2024-10-12 16:27:55,689 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 25 [2024-10-12 16:27:55,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:55,690 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2024-10-12 16:27:55,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:55,690 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2024-10-12 16:27:55,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-12 16:27:55,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:55,692 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:27:55,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:27:55,693 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:55,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:55,696 INFO L85 PathProgramCache]: Analyzing trace with hash -152636214, now seen corresponding path program 1 times [2024-10-12 16:27:55,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:55,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907696837] [2024-10-12 16:27:55,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:55,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:55,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:55,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907696837] [2024-10-12 16:27:55,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907696837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:55,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:55,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:27:55,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354945165] [2024-10-12 16:27:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:55,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:55,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:55,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:55,918 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:57,717 INFO L93 Difference]: Finished difference Result 2812 states and 4380 transitions. [2024-10-12 16:27:57,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:57,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2024-10-12 16:27:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:57,723 INFO L225 Difference]: With dead ends: 2812 [2024-10-12 16:27:57,723 INFO L226 Difference]: Without dead ends: 1843 [2024-10-12 16:27:57,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:57,727 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:57,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 577 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-12 16:27:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2024-10-12 16:27:57,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1840. [2024-10-12 16:27:57,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3501903208265362) internal successors, (2483), 1839 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:57,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2483 transitions. [2024-10-12 16:27:57,754 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2483 transitions. Word has length 92 [2024-10-12 16:27:57,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:57,754 INFO L471 AbstractCegarLoop]: Abstraction has 1840 states and 2483 transitions. [2024-10-12 16:27:57,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:57,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2483 transitions. [2024-10-12 16:27:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-12 16:27:57,759 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:57,759 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:27:57,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:27:57,759 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:57,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:57,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1642485586, now seen corresponding path program 1 times [2024-10-12 16:27:57,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:57,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683745465] [2024-10-12 16:27:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:57,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:27:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:27:57,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:27:57,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683745465] [2024-10-12 16:27:57,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683745465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:27:57,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:27:57,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:27:57,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702601074] [2024-10-12 16:27:57,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:27:57,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:27:57,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:27:57,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:27:57,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:27:57,953 INFO L87 Difference]: Start difference. First operand 1840 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:59,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:27:59,668 INFO L93 Difference]: Finished difference Result 4551 states and 6281 transitions. [2024-10-12 16:27:59,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:27:59,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-10-12 16:27:59,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:27:59,677 INFO L225 Difference]: With dead ends: 4551 [2024-10-12 16:27:59,677 INFO L226 Difference]: Without dead ends: 2712 [2024-10-12 16:27:59,680 INFO L431 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 [2024-10-12 16:27:59,682 INFO L432 NwaCegarLoop]: 816 mSDtfsCounter, 481 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:27:59,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 883 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 16:27:59,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2024-10-12 16:27:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2710. [2024-10-12 16:27:59,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 1.3004798818752308) internal successors, (3523), 2709 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3523 transitions. [2024-10-12 16:27:59,721 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3523 transitions. Word has length 95 [2024-10-12 16:27:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:27:59,722 INFO L471 AbstractCegarLoop]: Abstraction has 2710 states and 3523 transitions. [2024-10-12 16:27:59,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:27:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3523 transitions. [2024-10-12 16:27:59,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-12 16:27:59,728 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:27:59,728 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 16:27:59,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:27:59,729 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:27:59,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:27:59,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1095189255, now seen corresponding path program 1 times [2024-10-12 16:27:59,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:27:59,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201680712] [2024-10-12 16:27:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:27:59,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:27:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-10-12 16:28:00,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:00,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201680712] [2024-10-12 16:28:00,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201680712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:00,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:00,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:28:00,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939492374] [2024-10-12 16:28:00,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:00,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:00,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:00,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:00,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:00,054 INFO L87 Difference]: Start difference. First operand 2710 states and 3523 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:01,893 INFO L93 Difference]: Finished difference Result 7983 states and 10360 transitions. [2024-10-12 16:28:01,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:01,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2024-10-12 16:28:01,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:01,904 INFO L225 Difference]: With dead ends: 7983 [2024-10-12 16:28:01,904 INFO L226 Difference]: Without dead ends: 4420 [2024-10-12 16:28:01,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:01,909 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:01,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-12 16:28:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2024-10-12 16:28:01,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 3570. [2024-10-12 16:28:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3570 states, 3569 states have (on average 1.177640795741104) internal successors, (4203), 3569 states have internal predecessors, (4203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3570 states to 3570 states and 4203 transitions. [2024-10-12 16:28:01,960 INFO L78 Accepts]: Start accepts. Automaton has 3570 states and 4203 transitions. Word has length 164 [2024-10-12 16:28:01,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:01,961 INFO L471 AbstractCegarLoop]: Abstraction has 3570 states and 4203 transitions. [2024-10-12 16:28:01,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:01,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3570 states and 4203 transitions. [2024-10-12 16:28:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-10-12 16:28:01,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:01,963 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:01,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:28:01,963 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:01,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1536964859, now seen corresponding path program 1 times [2024-10-12 16:28:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:01,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713376617] [2024-10-12 16:28:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:01,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:28:02,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:02,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713376617] [2024-10-12 16:28:02,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713376617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:02,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:02,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:02,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876272212] [2024-10-12 16:28:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:02,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:02,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:02,145 INFO L87 Difference]: Start difference. First operand 3570 states and 4203 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:03,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:03,615 INFO L93 Difference]: Finished difference Result 9272 states and 11086 transitions. [2024-10-12 16:28:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:03,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2024-10-12 16:28:03,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:03,627 INFO L225 Difference]: With dead ends: 9272 [2024-10-12 16:28:03,628 INFO L226 Difference]: Without dead ends: 5703 [2024-10-12 16:28:03,630 INFO L431 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 [2024-10-12 16:28:03,631 INFO L432 NwaCegarLoop]: 724 mSDtfsCounter, 496 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:03,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 781 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:28:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2024-10-12 16:28:03,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5703. [2024-10-12 16:28:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5703 states, 5702 states have (on average 1.1595931252192213) internal successors, (6612), 5702 states have internal predecessors, (6612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5703 states to 5703 states and 6612 transitions. [2024-10-12 16:28:03,684 INFO L78 Accepts]: Start accepts. Automaton has 5703 states and 6612 transitions. Word has length 177 [2024-10-12 16:28:03,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:03,685 INFO L471 AbstractCegarLoop]: Abstraction has 5703 states and 6612 transitions. [2024-10-12 16:28:03,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:03,685 INFO L276 IsEmpty]: Start isEmpty. Operand 5703 states and 6612 transitions. [2024-10-12 16:28:03,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-10-12 16:28:03,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:03,689 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:03,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:28:03,689 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:03,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash -178885696, now seen corresponding path program 1 times [2024-10-12 16:28:03,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:03,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180356554] [2024-10-12 16:28:03,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:03,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-12 16:28:03,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:03,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180356554] [2024-10-12 16:28:03,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180356554] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:03,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:03,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:03,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440669943] [2024-10-12 16:28:03,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:03,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:03,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:03,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:03,822 INFO L87 Difference]: Start difference. First operand 5703 states and 6612 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:05,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:05,509 INFO L93 Difference]: Finished difference Result 14375 states and 16775 transitions. [2024-10-12 16:28:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:05,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2024-10-12 16:28:05,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:05,536 INFO L225 Difference]: With dead ends: 14375 [2024-10-12 16:28:05,536 INFO L226 Difference]: Without dead ends: 8672 [2024-10-12 16:28:05,547 INFO L431 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 [2024-10-12 16:28:05,552 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 424 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:05,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 442 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 16:28:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8672 states. [2024-10-12 16:28:05,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8672 to 5676. [2024-10-12 16:28:05,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 1.157885462555066) internal successors, (6571), 5675 states have internal predecessors, (6571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 6571 transitions. [2024-10-12 16:28:05,712 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 6571 transitions. Word has length 179 [2024-10-12 16:28:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:05,713 INFO L471 AbstractCegarLoop]: Abstraction has 5676 states and 6571 transitions. [2024-10-12 16:28:05,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:05,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 6571 transitions. [2024-10-12 16:28:05,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-10-12 16:28:05,719 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:05,719 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:05,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:28:05,720 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:05,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:05,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1304649405, now seen corresponding path program 1 times [2024-10-12 16:28:05,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:05,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590847061] [2024-10-12 16:28:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:05,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:05,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-12 16:28:05,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:05,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590847061] [2024-10-12 16:28:05,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590847061] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:05,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:05,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:05,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853171467] [2024-10-12 16:28:05,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:05,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:05,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:05,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:05,981 INFO L87 Difference]: Start difference. First operand 5676 states and 6571 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:07,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:07,610 INFO L93 Difference]: Finished difference Result 14314 states and 16679 transitions. [2024-10-12 16:28:07,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:07,611 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 257 [2024-10-12 16:28:07,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:07,633 INFO L225 Difference]: With dead ends: 14314 [2024-10-12 16:28:07,634 INFO L226 Difference]: Without dead ends: 7789 [2024-10-12 16:28:07,648 INFO L431 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 [2024-10-12 16:28:07,649 INFO L432 NwaCegarLoop]: 776 mSDtfsCounter, 383 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:07,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 844 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 16:28:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7789 states. [2024-10-12 16:28:07,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7789 to 7789. [2024-10-12 16:28:07,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7789 states, 7788 states have (on average 1.11864406779661) internal successors, (8712), 7788 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7789 states to 7789 states and 8712 transitions. [2024-10-12 16:28:07,813 INFO L78 Accepts]: Start accepts. Automaton has 7789 states and 8712 transitions. Word has length 257 [2024-10-12 16:28:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:07,814 INFO L471 AbstractCegarLoop]: Abstraction has 7789 states and 8712 transitions. [2024-10-12 16:28:07,815 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 7789 states and 8712 transitions. [2024-10-12 16:28:07,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-10-12 16:28:07,824 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:07,824 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:07,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:28:07,824 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:07,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:07,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1065187238, now seen corresponding path program 1 times [2024-10-12 16:28:07,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:07,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969262230] [2024-10-12 16:28:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:07,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-10-12 16:28:08,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:08,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969262230] [2024-10-12 16:28:08,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969262230] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:08,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:08,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:08,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63390179] [2024-10-12 16:28:08,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:08,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:08,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:08,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:08,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:08,061 INFO L87 Difference]: Start difference. First operand 7789 states and 8712 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:09,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:09,777 INFO L93 Difference]: Finished difference Result 18558 states and 20912 transitions. [2024-10-12 16:28:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:09,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 297 [2024-10-12 16:28:09,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:09,796 INFO L225 Difference]: With dead ends: 18558 [2024-10-12 16:28:09,796 INFO L226 Difference]: Without dead ends: 10770 [2024-10-12 16:28:09,803 INFO L431 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 [2024-10-12 16:28:09,804 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 445 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:09,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 400 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 16:28:09,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10770 states. [2024-10-12 16:28:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10770 to 9915. [2024-10-12 16:28:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9915 states, 9914 states have (on average 1.1194270728263063) internal successors, (11098), 9914 states have internal predecessors, (11098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 11098 transitions. [2024-10-12 16:28:09,915 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 11098 transitions. Word has length 297 [2024-10-12 16:28:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:09,916 INFO L471 AbstractCegarLoop]: Abstraction has 9915 states and 11098 transitions. [2024-10-12 16:28:09,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 11098 transitions. [2024-10-12 16:28:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-10-12 16:28:09,924 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:09,924 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:09,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 16:28:09,924 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:09,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:09,925 INFO L85 PathProgramCache]: Analyzing trace with hash -502997528, now seen corresponding path program 1 times [2024-10-12 16:28:09,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:09,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249258585] [2024-10-12 16:28:09,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:09,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:28:10,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:10,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249258585] [2024-10-12 16:28:10,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249258585] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:10,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:10,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:10,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500310237] [2024-10-12 16:28:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:10,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:28:10,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:10,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:28:10,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:28:10,177 INFO L87 Difference]: Start difference. First operand 9915 states and 11098 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:12,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:12,263 INFO L93 Difference]: Finished difference Result 26238 states and 29413 transitions. [2024-10-12 16:28:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:28:12,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 364 [2024-10-12 16:28:12,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:12,285 INFO L225 Difference]: With dead ends: 26238 [2024-10-12 16:28:12,286 INFO L226 Difference]: Without dead ends: 15899 [2024-10-12 16:28:12,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:28:12,296 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 649 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:12,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 194 Invalid, 2698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-12 16:28:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15899 states. [2024-10-12 16:28:12,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15899 to 15897. [2024-10-12 16:28:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15897 states, 15896 states have (on average 1.1247483643683946) internal successors, (17879), 15896 states have internal predecessors, (17879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15897 states to 15897 states and 17879 transitions. [2024-10-12 16:28:12,485 INFO L78 Accepts]: Start accepts. Automaton has 15897 states and 17879 transitions. Word has length 364 [2024-10-12 16:28:12,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:12,485 INFO L471 AbstractCegarLoop]: Abstraction has 15897 states and 17879 transitions. [2024-10-12 16:28:12,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:12,485 INFO L276 IsEmpty]: Start isEmpty. Operand 15897 states and 17879 transitions. [2024-10-12 16:28:12,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-10-12 16:28:12,490 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:12,491 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:12,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:28:12,492 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:12,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:12,492 INFO L85 PathProgramCache]: Analyzing trace with hash 430708759, now seen corresponding path program 1 times [2024-10-12 16:28:12,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:12,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499675526] [2024-10-12 16:28:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:12,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-12 16:28:12,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:12,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499675526] [2024-10-12 16:28:12,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499675526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:12,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:12,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:12,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619009423] [2024-10-12 16:28:12,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:12,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:12,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:12,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:12,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:12,649 INFO L87 Difference]: Start difference. First operand 15897 states and 17879 transitions. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:14,190 INFO L93 Difference]: Finished difference Result 44147 states and 49783 transitions. [2024-10-12 16:28:14,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:14,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 398 [2024-10-12 16:28:14,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:14,229 INFO L225 Difference]: With dead ends: 44147 [2024-10-12 16:28:14,229 INFO L226 Difference]: Without dead ends: 28251 [2024-10-12 16:28:14,244 INFO L431 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 [2024-10-12 16:28:14,245 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 496 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:14,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 285 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:28:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28251 states. [2024-10-12 16:28:14,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28251 to 27808. [2024-10-12 16:28:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27808 states, 27807 states have (on average 1.1171647426906894) internal successors, (31065), 27807 states have internal predecessors, (31065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27808 states to 27808 states and 31065 transitions. [2024-10-12 16:28:14,514 INFO L78 Accepts]: Start accepts. Automaton has 27808 states and 31065 transitions. Word has length 398 [2024-10-12 16:28:14,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:14,514 INFO L471 AbstractCegarLoop]: Abstraction has 27808 states and 31065 transitions. [2024-10-12 16:28:14,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:14,515 INFO L276 IsEmpty]: Start isEmpty. Operand 27808 states and 31065 transitions. [2024-10-12 16:28:14,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-10-12 16:28:14,521 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:14,522 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:14,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 16:28:14,522 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:14,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1529324423, now seen corresponding path program 1 times [2024-10-12 16:28:14,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:14,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357502462] [2024-10-12 16:28:14,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:14,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 47 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:28:15,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:15,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357502462] [2024-10-12 16:28:15,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357502462] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:28:15,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843068676] [2024-10-12 16:28:15,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:15,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:28:15,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:28:15,907 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) [2024-10-12 16:28:15,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:28:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:16,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 16:28:16,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:28:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 47 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:28:16,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:28:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:28:17,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843068676] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 16:28:17,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 16:28:17,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 10 [2024-10-12 16:28:17,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674848885] [2024-10-12 16:28:17,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:17,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:28:17,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:17,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:28:17,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-12 16:28:17,061 INFO L87 Difference]: Start difference. First operand 27808 states and 31065 transitions. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:19,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:19,683 INFO L93 Difference]: Finished difference Result 83734 states and 93625 transitions. [2024-10-12 16:28:19,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:28:19,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 411 [2024-10-12 16:28:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:19,748 INFO L225 Difference]: With dead ends: 83734 [2024-10-12 16:28:19,748 INFO L226 Difference]: Without dead ends: 55074 [2024-10-12 16:28:19,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 817 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-12 16:28:19,776 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 632 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:19,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 179 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:28:19,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55074 states. [2024-10-12 16:28:20,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55074 to 51236. [2024-10-12 16:28:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51236 states, 51235 states have (on average 1.106841026641944) internal successors, (56709), 51235 states have internal predecessors, (56709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51236 states to 51236 states and 56709 transitions. [2024-10-12 16:28:20,844 INFO L78 Accepts]: Start accepts. Automaton has 51236 states and 56709 transitions. Word has length 411 [2024-10-12 16:28:20,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:20,845 INFO L471 AbstractCegarLoop]: Abstraction has 51236 states and 56709 transitions. [2024-10-12 16:28:20,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:20,845 INFO L276 IsEmpty]: Start isEmpty. Operand 51236 states and 56709 transitions. [2024-10-12 16:28:20,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-10-12 16:28:20,864 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:20,864 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:20,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 16:28:21,065 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,SelfDestructingSolverStorable11 [2024-10-12 16:28:21,066 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:21,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:21,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1343940103, now seen corresponding path program 1 times [2024-10-12 16:28:21,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:21,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716112917] [2024-10-12 16:28:21,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:21,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-12 16:28:22,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:22,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716112917] [2024-10-12 16:28:22,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716112917] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:22,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:22,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:28:22,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552018139] [2024-10-12 16:28:22,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:22,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:28:22,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:22,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:28:22,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:28:22,198 INFO L87 Difference]: Start difference. First operand 51236 states and 56709 transitions. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:24,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:24,847 INFO L93 Difference]: Finished difference Result 119500 states and 132257 transitions. [2024-10-12 16:28:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:28:24,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 460 [2024-10-12 16:28:24,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:24,912 INFO L225 Difference]: With dead ends: 119500 [2024-10-12 16:28:24,912 INFO L226 Difference]: Without dead ends: 68265 [2024-10-12 16:28:24,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:28:24,925 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 681 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:24,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 357 Invalid, 2760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 16:28:24,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68265 states. [2024-10-12 16:28:25,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68265 to 61446. [2024-10-12 16:28:25,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61446 states, 61445 states have (on average 1.1070876393522662) internal successors, (68025), 61445 states have internal predecessors, (68025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:25,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61446 states to 61446 states and 68025 transitions. [2024-10-12 16:28:25,807 INFO L78 Accepts]: Start accepts. Automaton has 61446 states and 68025 transitions. Word has length 460 [2024-10-12 16:28:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:25,811 INFO L471 AbstractCegarLoop]: Abstraction has 61446 states and 68025 transitions. [2024-10-12 16:28:25,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 61446 states and 68025 transitions. [2024-10-12 16:28:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-10-12 16:28:25,826 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:25,826 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:25,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 16:28:25,827 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:25,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2043287877, now seen corresponding path program 1 times [2024-10-12 16:28:25,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:25,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65936972] [2024-10-12 16:28:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:25,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-12 16:28:26,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:26,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65936972] [2024-10-12 16:28:26,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65936972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:26,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:26,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:26,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438241786] [2024-10-12 16:28:26,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:26,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:26,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:26,353 INFO L87 Difference]: Start difference. First operand 61446 states and 68025 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:28,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:28,046 INFO L93 Difference]: Finished difference Result 120333 states and 133046 transitions. [2024-10-12 16:28:28,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:28,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 468 [2024-10-12 16:28:28,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:28,116 INFO L225 Difference]: With dead ends: 120333 [2024-10-12 16:28:28,116 INFO L226 Difference]: Without dead ends: 58888 [2024-10-12 16:28:28,153 INFO L431 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 [2024-10-12 16:28:28,153 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 468 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:28,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 319 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:28:28,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58888 states. [2024-10-12 16:28:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58888 to 54632. [2024-10-12 16:28:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54632 states, 54631 states have (on average 1.1071552781387857) internal successors, (60485), 54631 states have internal predecessors, (60485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54632 states to 54632 states and 60485 transitions. [2024-10-12 16:28:28,834 INFO L78 Accepts]: Start accepts. Automaton has 54632 states and 60485 transitions. Word has length 468 [2024-10-12 16:28:28,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:28,835 INFO L471 AbstractCegarLoop]: Abstraction has 54632 states and 60485 transitions. [2024-10-12 16:28:28,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:28,835 INFO L276 IsEmpty]: Start isEmpty. Operand 54632 states and 60485 transitions. [2024-10-12 16:28:28,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-10-12 16:28:28,847 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:28,847 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:28,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:28:28,847 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:28,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:28,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1595926647, now seen corresponding path program 1 times [2024-10-12 16:28:28,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:28,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456240657] [2024-10-12 16:28:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:28,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-12 16:28:29,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456240657] [2024-10-12 16:28:29,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456240657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:29,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:29,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:29,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800067193] [2024-10-12 16:28:29,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:29,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:29,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:29,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:29,655 INFO L87 Difference]: Start difference. First operand 54632 states and 60485 transitions. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:30,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:30,939 INFO L93 Difference]: Finished difference Result 110541 states and 122306 transitions. [2024-10-12 16:28:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:30,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 485 [2024-10-12 16:28:30,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:31,001 INFO L225 Difference]: With dead ends: 110541 [2024-10-12 16:28:31,001 INFO L226 Difference]: Without dead ends: 55910 [2024-10-12 16:28:31,035 INFO L431 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 [2024-10-12 16:28:31,036 INFO L432 NwaCegarLoop]: 781 mSDtfsCounter, 127 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:31,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 836 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:28:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55910 states. [2024-10-12 16:28:31,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55910 to 55908. [2024-10-12 16:28:31,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55908 states, 55907 states have (on average 1.1046559464825514) internal successors, (61758), 55907 states have internal predecessors, (61758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55908 states to 55908 states and 61758 transitions. [2024-10-12 16:28:31,832 INFO L78 Accepts]: Start accepts. Automaton has 55908 states and 61758 transitions. Word has length 485 [2024-10-12 16:28:31,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:31,833 INFO L471 AbstractCegarLoop]: Abstraction has 55908 states and 61758 transitions. [2024-10-12 16:28:31,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 55908 states and 61758 transitions. [2024-10-12 16:28:31,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2024-10-12 16:28:31,843 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:31,844 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:31,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 16:28:31,844 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:31,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:31,844 INFO L85 PathProgramCache]: Analyzing trace with hash -203404945, now seen corresponding path program 1 times [2024-10-12 16:28:31,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:31,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919704438] [2024-10-12 16:28:31,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:31,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 208 proven. 78 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 16:28:32,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:32,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919704438] [2024-10-12 16:28:32,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919704438] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:28:32,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59053158] [2024-10-12 16:28:32,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:32,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:28:32,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:28:32,324 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) [2024-10-12 16:28:32,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:28:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:32,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 16:28:32,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:28:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 208 proven. 78 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 16:28:32,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:28:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 16:28:32,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59053158] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-12 16:28:32,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-12 16:28:32,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-12 16:28:32,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530776437] [2024-10-12 16:28:32,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:32,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:28:32,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:28:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:28:32,913 INFO L87 Difference]: Start difference. First operand 55908 states and 61758 transitions. Second operand has 4 states, 4 states have (on average 116.75) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:35,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:35,437 INFO L93 Difference]: Finished difference Result 126722 states and 139742 transitions. [2024-10-12 16:28:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:28:35,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 490 [2024-10-12 16:28:35,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:35,511 INFO L225 Difference]: With dead ends: 126722 [2024-10-12 16:28:35,511 INFO L226 Difference]: Without dead ends: 70387 [2024-10-12 16:28:35,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 981 GetRequests, 977 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:28:35,545 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 843 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:35,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 199 Invalid, 2758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-12 16:28:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70387 states. [2024-10-12 16:28:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70387 to 63585. [2024-10-12 16:28:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63585 states, 63584 states have (on average 1.104208605938601) internal successors, (70210), 63584 states have internal predecessors, (70210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:36,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63585 states to 63585 states and 70210 transitions. [2024-10-12 16:28:36,393 INFO L78 Accepts]: Start accepts. Automaton has 63585 states and 70210 transitions. Word has length 490 [2024-10-12 16:28:36,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:36,393 INFO L471 AbstractCegarLoop]: Abstraction has 63585 states and 70210 transitions. [2024-10-12 16:28:36,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:36,394 INFO L276 IsEmpty]: Start isEmpty. Operand 63585 states and 70210 transitions. [2024-10-12 16:28:36,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2024-10-12 16:28:36,403 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:36,404 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:36,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 16:28:36,604 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,SelfDestructingSolverStorable15 [2024-10-12 16:28:36,605 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:36,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1830307561, now seen corresponding path program 1 times [2024-10-12 16:28:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:36,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827939399] [2024-10-12 16:28:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 234 proven. 82 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 16:28:38,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:38,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827939399] [2024-10-12 16:28:38,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827939399] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:28:38,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712503147] [2024-10-12 16:28:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:38,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:28:38,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:28:38,086 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) [2024-10-12 16:28:38,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 16:28:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:38,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 16:28:38,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:28:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 234 proven. 82 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 16:28:38,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:28:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 234 proven. 82 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-12 16:28:39,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712503147] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 16:28:39,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 16:28:39,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-10-12 16:28:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502075633] [2024-10-12 16:28:39,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 16:28:39,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-12 16:28:39,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:39,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-12 16:28:39,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-12 16:28:39,376 INFO L87 Difference]: Start difference. First operand 63585 states and 70210 transitions. Second operand has 9 states, 9 states have (on average 87.44444444444444) internal successors, (787), 8 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:45,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:45,991 INFO L93 Difference]: Finished difference Result 156991 states and 172957 transitions. [2024-10-12 16:28:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 16:28:45,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 87.44444444444444) internal successors, (787), 8 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 516 [2024-10-12 16:28:45,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:46,075 INFO L225 Difference]: With dead ends: 156991 [2024-10-12 16:28:46,075 INFO L226 Difference]: Without dead ends: 90431 [2024-10-12 16:28:46,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-10-12 16:28:46,088 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 4577 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 7426 mSolverCounterSat, 1076 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4577 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 8502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1076 IncrementalHoareTripleChecker+Valid, 7426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:46,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4577 Valid, 411 Invalid, 8502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1076 Valid, 7426 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-10-12 16:28:46,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90431 states. [2024-10-12 16:28:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90431 to 76753. [2024-10-12 16:28:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76753 states, 76752 states have (on average 1.1009485094850948) internal successors, (84500), 76752 states have internal predecessors, (84500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:46,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76753 states to 76753 states and 84500 transitions. [2024-10-12 16:28:46,953 INFO L78 Accepts]: Start accepts. Automaton has 76753 states and 84500 transitions. Word has length 516 [2024-10-12 16:28:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:46,954 INFO L471 AbstractCegarLoop]: Abstraction has 76753 states and 84500 transitions. [2024-10-12 16:28:46,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.44444444444444) internal successors, (787), 8 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 76753 states and 84500 transitions. [2024-10-12 16:28:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2024-10-12 16:28:46,965 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:46,965 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:46,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-12 16:28:47,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:28:47,170 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:47,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1193099162, now seen corresponding path program 1 times [2024-10-12 16:28:47,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:47,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954691650] [2024-10-12 16:28:47,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:47,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-10-12 16:28:47,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:47,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954691650] [2024-10-12 16:28:47,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954691650] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:47,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:47,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:47,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427884539] [2024-10-12 16:28:47,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:47,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:47,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:47,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:47,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:47,760 INFO L87 Difference]: Start difference. First operand 76753 states and 84500 transitions. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:49,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:49,467 INFO L93 Difference]: Finished difference Result 161995 states and 177650 transitions. [2024-10-12 16:28:49,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:49,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 591 [2024-10-12 16:28:49,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:49,560 INFO L225 Difference]: With dead ends: 161995 [2024-10-12 16:28:49,560 INFO L226 Difference]: Without dead ends: 81833 [2024-10-12 16:28:49,612 INFO L431 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 [2024-10-12 16:28:49,612 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 447 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:49,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 577 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:28:49,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81833 states. [2024-10-12 16:28:50,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81833 to 64359. [2024-10-12 16:28:50,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64359 states, 64358 states have (on average 1.0805805028123932) internal successors, (69544), 64358 states have internal predecessors, (69544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64359 states to 64359 states and 69544 transitions. [2024-10-12 16:28:50,686 INFO L78 Accepts]: Start accepts. Automaton has 64359 states and 69544 transitions. Word has length 591 [2024-10-12 16:28:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:50,686 INFO L471 AbstractCegarLoop]: Abstraction has 64359 states and 69544 transitions. [2024-10-12 16:28:50,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 64359 states and 69544 transitions. [2024-10-12 16:28:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2024-10-12 16:28:50,695 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:50,696 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:50,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 16:28:50,696 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:50,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash -720607051, now seen corresponding path program 1 times [2024-10-12 16:28:50,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:50,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264011878] [2024-10-12 16:28:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:50,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-12 16:28:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:51,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264011878] [2024-10-12 16:28:51,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264011878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:28:51,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:28:51,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:28:51,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461891431] [2024-10-12 16:28:51,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:28:51,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:28:51,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:28:51,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:51,340 INFO L87 Difference]: Start difference. First operand 64359 states and 69544 transitions. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:52,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:28:52,711 INFO L93 Difference]: Finished difference Result 128715 states and 139085 transitions. [2024-10-12 16:28:52,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:28:52,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 592 [2024-10-12 16:28:52,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:28:52,774 INFO L225 Difference]: With dead ends: 128715 [2024-10-12 16:28:52,775 INFO L226 Difference]: Without dead ends: 64357 [2024-10-12 16:28:52,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:28:52,812 INFO L432 NwaCegarLoop]: 519 mSDtfsCounter, 583 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:28:52,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 535 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:28:52,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64357 states. [2024-10-12 16:28:53,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64357 to 64356. [2024-10-12 16:28:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64356 states, 64355 states have (on average 1.0804288711055863) internal successors, (69531), 64355 states have internal predecessors, (69531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:53,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64356 states to 64356 states and 69531 transitions. [2024-10-12 16:28:53,563 INFO L78 Accepts]: Start accepts. Automaton has 64356 states and 69531 transitions. Word has length 592 [2024-10-12 16:28:53,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:28:53,564 INFO L471 AbstractCegarLoop]: Abstraction has 64356 states and 69531 transitions. [2024-10-12 16:28:53,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:28:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand 64356 states and 69531 transitions. [2024-10-12 16:28:53,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-10-12 16:28:53,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:28:53,572 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:28:53,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 16:28:53,573 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:28:53,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:28:53,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2136239801, now seen corresponding path program 1 times [2024-10-12 16:28:53,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:28:53,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312848597] [2024-10-12 16:28:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:53,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:28:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 177 proven. 430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:28:54,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:28:54,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312848597] [2024-10-12 16:28:54,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312848597] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:28:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681787843] [2024-10-12 16:28:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:28:54,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:28:54,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:28:54,922 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) [2024-10-12 16:28:54,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 16:28:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:28:55,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 16:28:55,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:28:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 423 proven. 103 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-12 16:28:56,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 16:28:58,436 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 423 proven. 103 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-12 16:28:58,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681787843] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 16:28:58,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 16:28:58,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2024-10-12 16:28:58,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032705216] [2024-10-12 16:28:58,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 16:28:58,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 16:28:58,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:28:58,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 16:28:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-12 16:28:58,440 INFO L87 Difference]: Start difference. First operand 64356 states and 69531 transitions. Second operand has 10 states, 10 states have (on average 149.2) internal successors, (1492), 10 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:29:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:29:07,606 INFO L93 Difference]: Finished difference Result 164077 states and 176308 transitions. [2024-10-12 16:29:07,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-12 16:29:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 149.2) internal successors, (1492), 10 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 596 [2024-10-12 16:29:07,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:29:07,715 INFO L225 Difference]: With dead ends: 164077 [2024-10-12 16:29:07,715 INFO L226 Difference]: Without dead ends: 99722 [2024-10-12 16:29:07,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 1194 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-10-12 16:29:07,758 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 3255 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 15532 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3255 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 16074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 15532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:29:07,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3255 Valid, 492 Invalid, 16074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 15532 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-10-12 16:29:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99722 states. [2024-10-12 16:29:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99722 to 74989. [2024-10-12 16:29:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74989 states, 74988 states have (on average 1.072291566650664) internal successors, (80409), 74988 states have internal predecessors, (80409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:29:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74989 states to 74989 states and 80409 transitions. [2024-10-12 16:29:08,656 INFO L78 Accepts]: Start accepts. Automaton has 74989 states and 80409 transitions. Word has length 596 [2024-10-12 16:29:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:29:08,656 INFO L471 AbstractCegarLoop]: Abstraction has 74989 states and 80409 transitions. [2024-10-12 16:29:08,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 149.2) internal successors, (1492), 10 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:29:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 74989 states and 80409 transitions. [2024-10-12 16:29:08,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2024-10-12 16:29:08,665 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:29:08,666 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:29:08,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 16:29:08,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:29:08,867 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:29:08,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:29:08,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1365561101, now seen corresponding path program 1 times [2024-10-12 16:29:08,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:29:08,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185249170] [2024-10-12 16:29:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:29:08,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:29:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:29:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 381 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-10-12 16:29:09,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:29:09,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185249170] [2024-10-12 16:29:09,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185249170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:29:09,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:29:09,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:29:09,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691278301] [2024-10-12 16:29:09,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:29:09,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:29:09,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:29:09,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:29:09,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:29:09,337 INFO L87 Difference]: Start difference. First operand 74989 states and 80409 transitions. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:29:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:29:10,774 INFO L93 Difference]: Finished difference Result 149130 states and 160034 transitions. [2024-10-12 16:29:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:29:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 611 [2024-10-12 16:29:10,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:29:10,879 INFO L225 Difference]: With dead ends: 149130 [2024-10-12 16:29:10,879 INFO L226 Difference]: Without dead ends: 76269 [2024-10-12 16:29:10,924 INFO L431 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 [2024-10-12 16:29:10,925 INFO L432 NwaCegarLoop]: 592 mSDtfsCounter, 500 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:29:10,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 627 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:29:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76269 states. [2024-10-12 16:29:12,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76269 to 75413. [2024-10-12 16:29:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75413 states, 75412 states have (on average 1.066236142788946) internal successors, (80407), 75412 states have internal predecessors, (80407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:29:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75413 states to 75413 states and 80407 transitions. [2024-10-12 16:29:12,164 INFO L78 Accepts]: Start accepts. Automaton has 75413 states and 80407 transitions. Word has length 611 [2024-10-12 16:29:12,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:29:12,165 INFO L471 AbstractCegarLoop]: Abstraction has 75413 states and 80407 transitions. [2024-10-12 16:29:12,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:29:12,173 INFO L276 IsEmpty]: Start isEmpty. Operand 75413 states and 80407 transitions. [2024-10-12 16:29:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-10-12 16:29:12,204 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:29:12,205 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:29:12,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 16:29:12,205 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:29:12,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:29:12,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1991987321, now seen corresponding path program 1 times [2024-10-12 16:29:12,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:29:12,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309979233] [2024-10-12 16:29:12,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:29:12,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:29:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:29:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-12 16:29:12,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:29:12,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309979233] [2024-10-12 16:29:12,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309979233] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:29:12,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:29:12,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:29:12,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525650521] [2024-10-12 16:29:12,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:29:12,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:29:12,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:29:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:29:12,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:29:12,780 INFO L87 Difference]: Start difference. First operand 75413 states and 80407 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:29:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:29:14,576 INFO L93 Difference]: Finished difference Result 155953 states and 166326 transitions. [2024-10-12 16:29:14,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:29:14,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 638 [2024-10-12 16:29:14,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:29:14,655 INFO L225 Difference]: With dead ends: 155953 [2024-10-12 16:29:14,655 INFO L226 Difference]: Without dead ends: 80966 [2024-10-12 16:29:14,690 INFO L431 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 [2024-10-12 16:29:14,690 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 426 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:29:14,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 201 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:29:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80966 states. [2024-10-12 16:29:15,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80966 to 76686. [2024-10-12 16:29:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76686 states, 76685 states have (on average 1.06408032861707) internal successors, (81599), 76685 states have internal predecessors, (81599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:29:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76686 states to 76686 states and 81599 transitions. [2024-10-12 16:29:15,483 INFO L78 Accepts]: Start accepts. Automaton has 76686 states and 81599 transitions. Word has length 638 [2024-10-12 16:29:15,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:29:15,483 INFO L471 AbstractCegarLoop]: Abstraction has 76686 states and 81599 transitions. [2024-10-12 16:29:15,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:29:15,484 INFO L276 IsEmpty]: Start isEmpty. Operand 76686 states and 81599 transitions. [2024-10-12 16:29:15,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2024-10-12 16:29:15,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:29:15,507 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:29:15,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 16:29:15,507 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:29:15,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:29:15,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1601333537, now seen corresponding path program 1 times [2024-10-12 16:29:15,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:29:15,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77928075] [2024-10-12 16:29:15,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:29:15,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:29:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat