./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.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 4a068220cd9a63125e810935e79eeb0e481ecd288491865590be5286d46acb22 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:35:21,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:35:21,115 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:35:21,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:35:21,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:35:21,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:35:21,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:35:21,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:35:21,145 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:35:21,145 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:35:21,146 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:35:21,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:35:21,147 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:35:21,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:35:21,150 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:35:21,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:35:21,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:35:21,150 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:35:21,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:35:21,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:35:21,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:35:21,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:35:21,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:35:21,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:35:21,156 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:35:21,156 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:35:21,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:35:21,157 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:35:21,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:35:21,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:35:21,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:35:21,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:35:21,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:35:21,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:35:21,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:35:21,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:35:21,159 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:35:21,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:35:21,159 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:35:21,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:35:21,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:35:21,162 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:35:21,162 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a068220cd9a63125e810935e79eeb0e481ecd288491865590be5286d46acb22 [2024-10-24 01:35:21,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:35:21,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:35:21,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:35:21,440 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:35:21,441 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:35:21,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-10-24 01:35:22,861 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:35:23,058 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:35:23,059 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-10-24 01:35:23,072 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22321aac4/1921b85066174dac9779d472c3f82653/FLAG07a8f63a2 [2024-10-24 01:35:23,427 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22321aac4/1921b85066174dac9779d472c3f82653 [2024-10-24 01:35:23,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:35:23,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:35:23,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:35:23,434 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:35:23,441 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:35:23,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:23,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0057f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23, skipping insertion in model container [2024-10-24 01:35:23,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:23,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:35:23,761 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/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2024-10-24 01:35:23,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:35:23,811 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:35:23,876 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/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2024-10-24 01:35:23,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:35:23,920 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:35:23,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23 WrapperNode [2024-10-24 01:35:23,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:35:23,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:35:23,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:35:23,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:35:23,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:23,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:23,976 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 633 [2024-10-24 01:35:23,977 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:35:23,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:35:23,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:35:23,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:35:23,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:23,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:24,003 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:24,042 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]. [2024-10-24 01:35:24,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:24,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:24,053 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:24,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:24,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:24,063 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:24,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:35:24,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:35:24,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:35:24,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:35:24,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (1/1) ... [2024-10-24 01:35:24,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:35:24,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:35:24,113 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) [2024-10-24 01:35:24,122 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 [2024-10-24 01:35:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:35:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:35:24,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:35:24,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:35:24,316 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:35:24,318 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:35:24,913 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-10-24 01:35:24,913 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:35:24,974 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:35:24,975 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 01:35:24,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:35:24 BoogieIcfgContainer [2024-10-24 01:35:24,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:35:24,978 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:35:24,978 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:35:24,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:35:24,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:35:23" (1/3) ... [2024-10-24 01:35:24,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2bfe59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:35:24, skipping insertion in model container [2024-10-24 01:35:24,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:35:23" (2/3) ... [2024-10-24 01:35:24,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2bfe59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:35:24, skipping insertion in model container [2024-10-24 01:35:24,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:35:24" (3/3) ... [2024-10-24 01:35:24,984 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-10-24 01:35:24,997 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:35:24,997 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:35:25,059 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:35:25,065 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;@7808fc74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:35:25,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:35:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 131 states have (on average 1.786259541984733) internal successors, (234), 132 states have internal predecessors, (234), 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) [2024-10-24 01:35:25,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 01:35:25,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:25,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:25,079 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:25,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:25,084 INFO L85 PathProgramCache]: Analyzing trace with hash -257930743, now seen corresponding path program 1 times [2024-10-24 01:35:25,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:25,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392747258] [2024-10-24 01:35:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:25,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:25,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:25,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392747258] [2024-10-24 01:35:25,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392747258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:25,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:25,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:35:25,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826187730] [2024-10-24 01:35:25,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:25,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:35:25,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:25,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:35:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:35:25,703 INFO L87 Difference]: Start difference. First operand has 133 states, 131 states have (on average 1.786259541984733) internal successors, (234), 132 states have internal predecessors, (234), 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 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-24 01:35:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:25,801 INFO L93 Difference]: Finished difference Result 284 states and 487 transitions. [2024-10-24 01:35:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:35:25,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-10-24 01:35:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:25,815 INFO L225 Difference]: With dead ends: 284 [2024-10-24 01:35:25,816 INFO L226 Difference]: Without dead ends: 200 [2024-10-24 01:35:25,818 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 [2024-10-24 01:35:25,821 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 130 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:25,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 404 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:35:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-10-24 01:35:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2024-10-24 01:35:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.583756345177665) internal successors, (312), 197 states have internal predecessors, (312), 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) [2024-10-24 01:35:25,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 312 transitions. [2024-10-24 01:35:25,865 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 312 transitions. Word has length 56 [2024-10-24 01:35:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:25,866 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 312 transitions. [2024-10-24 01:35:25,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-10-24 01:35:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 312 transitions. [2024-10-24 01:35:25,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 01:35:25,869 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:25,869 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:25,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:35:25,870 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:25,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1691975926, now seen corresponding path program 1 times [2024-10-24 01:35:25,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:25,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478438501] [2024-10-24 01:35:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:25,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:26,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:26,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478438501] [2024-10-24 01:35:26,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478438501] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:26,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:26,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:35:26,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624918239] [2024-10-24 01:35:26,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:26,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:35:26,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:35:26,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:35:26,052 INFO L87 Difference]: Start difference. First operand 198 states and 312 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-10-24 01:35:26,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:26,096 INFO L93 Difference]: Finished difference Result 474 states and 768 transitions. [2024-10-24 01:35:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:35:26,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2024-10-24 01:35:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:26,102 INFO L225 Difference]: With dead ends: 474 [2024-10-24 01:35:26,102 INFO L226 Difference]: Without dead ends: 329 [2024-10-24 01:35:26,103 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 [2024-10-24 01:35:26,104 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 110 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:26,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 440 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:26,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-10-24 01:35:26,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2024-10-24 01:35:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.607361963190184) internal successors, (524), 326 states have internal predecessors, (524), 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) [2024-10-24 01:35:26,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 524 transitions. [2024-10-24 01:35:26,126 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 524 transitions. Word has length 58 [2024-10-24 01:35:26,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:26,126 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 524 transitions. [2024-10-24 01:35:26,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-10-24 01:35:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 524 transitions. [2024-10-24 01:35:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 01:35:26,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:26,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:26,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:35:26,129 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:26,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash -62203140, now seen corresponding path program 1 times [2024-10-24 01:35:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:26,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563729832] [2024-10-24 01:35:26,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:26,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:26,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:26,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563729832] [2024-10-24 01:35:26,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563729832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:26,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:26,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:35:26,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055963692] [2024-10-24 01:35:26,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:26,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:35:26,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:26,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:35:26,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:35:26,270 INFO L87 Difference]: Start difference. First operand 327 states and 524 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-24 01:35:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:26,311 INFO L93 Difference]: Finished difference Result 602 states and 980 transitions. [2024-10-24 01:35:26,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:35:26,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2024-10-24 01:35:26,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:26,315 INFO L225 Difference]: With dead ends: 602 [2024-10-24 01:35:26,317 INFO L226 Difference]: Without dead ends: 457 [2024-10-24 01:35:26,319 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 [2024-10-24 01:35:26,320 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 111 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:26,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 442 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:26,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2024-10-24 01:35:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2024-10-24 01:35:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.6167400881057268) internal successors, (734), 454 states have internal predecessors, (734), 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) [2024-10-24 01:35:26,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 734 transitions. [2024-10-24 01:35:26,350 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 734 transitions. Word has length 60 [2024-10-24 01:35:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:26,350 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 734 transitions. [2024-10-24 01:35:26,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-24 01:35:26,351 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 734 transitions. [2024-10-24 01:35:26,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 01:35:26,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:26,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:26,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:35:26,355 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:26,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1225726807, now seen corresponding path program 1 times [2024-10-24 01:35:26,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:26,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244707579] [2024-10-24 01:35:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:26,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:26,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:26,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244707579] [2024-10-24 01:35:26,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244707579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:26,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:26,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:35:26,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049519869] [2024-10-24 01:35:26,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:26,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:35:26,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:26,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:35:26,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:35:26,480 INFO L87 Difference]: Start difference. First operand 455 states and 734 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-24 01:35:26,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:26,508 INFO L93 Difference]: Finished difference Result 1171 states and 1910 transitions. [2024-10-24 01:35:26,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:35:26,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2024-10-24 01:35:26,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:26,512 INFO L225 Difference]: With dead ends: 1171 [2024-10-24 01:35:26,513 INFO L226 Difference]: Without dead ends: 792 [2024-10-24 01:35:26,515 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 [2024-10-24 01:35:26,516 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 105 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:26,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 378 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:26,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2024-10-24 01:35:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 790. [2024-10-24 01:35:26,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.6172370088719898) internal successors, (1276), 789 states have internal predecessors, (1276), 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) [2024-10-24 01:35:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1276 transitions. [2024-10-24 01:35:26,546 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1276 transitions. Word has length 60 [2024-10-24 01:35:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:26,547 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 1276 transitions. [2024-10-24 01:35:26,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-24 01:35:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1276 transitions. [2024-10-24 01:35:26,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 01:35:26,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:26,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:26,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:35:26,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:26,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:26,554 INFO L85 PathProgramCache]: Analyzing trace with hash -792993450, now seen corresponding path program 1 times [2024-10-24 01:35:26,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:26,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760034539] [2024-10-24 01:35:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:26,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:26,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:26,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760034539] [2024-10-24 01:35:26,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760034539] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:26,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:26,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:35:26,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123195705] [2024-10-24 01:35:26,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:26,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:35:26,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:26,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:35:26,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:26,721 INFO L87 Difference]: Start difference. First operand 790 states and 1276 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-10-24 01:35:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:26,916 INFO L93 Difference]: Finished difference Result 3567 states and 5887 transitions. [2024-10-24 01:35:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:35:26,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 62 [2024-10-24 01:35:26,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:26,927 INFO L225 Difference]: With dead ends: 3567 [2024-10-24 01:35:26,927 INFO L226 Difference]: Without dead ends: 2853 [2024-10-24 01:35:26,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-10-24 01:35:26,931 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 881 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:26,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1258 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:35:26,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2024-10-24 01:35:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 1431. [2024-10-24 01:35:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1430 states have (on average 1.6237762237762239) internal successors, (2322), 1430 states have internal predecessors, (2322), 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) [2024-10-24 01:35:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2322 transitions. [2024-10-24 01:35:26,986 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2322 transitions. Word has length 62 [2024-10-24 01:35:26,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:26,987 INFO L471 AbstractCegarLoop]: Abstraction has 1431 states and 2322 transitions. [2024-10-24 01:35:26,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-10-24 01:35:26,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2322 transitions. [2024-10-24 01:35:26,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 01:35:26,990 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:26,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:26,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:35:26,991 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:26,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:26,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1124502626, now seen corresponding path program 1 times [2024-10-24 01:35:26,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:26,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896443244] [2024-10-24 01:35:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:26,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:27,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:27,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:27,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896443244] [2024-10-24 01:35:27,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896443244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:27,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:27,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:35:27,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657831831] [2024-10-24 01:35:27,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:27,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:35:27,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:27,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:35:27,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:35:27,165 INFO L87 Difference]: Start difference. First operand 1431 states and 2322 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-10-24 01:35:27,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:27,249 INFO L93 Difference]: Finished difference Result 4198 states and 6909 transitions. [2024-10-24 01:35:27,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:35:27,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 63 [2024-10-24 01:35:27,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:27,264 INFO L225 Difference]: With dead ends: 4198 [2024-10-24 01:35:27,265 INFO L226 Difference]: Without dead ends: 2845 [2024-10-24 01:35:27,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:27,269 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 379 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:27,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 605 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:35:27,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2024-10-24 01:35:27,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2126. [2024-10-24 01:35:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2125 states have (on average 1.6305882352941177) internal successors, (3465), 2125 states have internal predecessors, (3465), 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) [2024-10-24 01:35:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3465 transitions. [2024-10-24 01:35:27,320 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3465 transitions. Word has length 63 [2024-10-24 01:35:27,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:27,324 INFO L471 AbstractCegarLoop]: Abstraction has 2126 states and 3465 transitions. [2024-10-24 01:35:27,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2024-10-24 01:35:27,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3465 transitions. [2024-10-24 01:35:27,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 01:35:27,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:27,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:27,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:35:27,325 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:27,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:27,326 INFO L85 PathProgramCache]: Analyzing trace with hash -808788401, now seen corresponding path program 1 times [2024-10-24 01:35:27,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:27,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958508426] [2024-10-24 01:35:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:27,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:27,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:27,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958508426] [2024-10-24 01:35:27,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958508426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:27,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:27,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:35:27,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910079261] [2024-10-24 01:35:27,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:27,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:35:27,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:27,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:35:27,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:35:27,425 INFO L87 Difference]: Start difference. First operand 2126 states and 3465 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-24 01:35:27,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:27,459 INFO L93 Difference]: Finished difference Result 4120 states and 6751 transitions. [2024-10-24 01:35:27,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:35:27,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-10-24 01:35:27,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:27,470 INFO L225 Difference]: With dead ends: 4120 [2024-10-24 01:35:27,470 INFO L226 Difference]: Without dead ends: 2978 [2024-10-24 01:35:27,474 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 [2024-10-24 01:35:27,475 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 106 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:27,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 424 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2024-10-24 01:35:27,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2976. [2024-10-24 01:35:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2975 states have (on average 1.6258823529411766) internal successors, (4837), 2975 states have internal predecessors, (4837), 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) [2024-10-24 01:35:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 4837 transitions. [2024-10-24 01:35:27,534 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 4837 transitions. Word has length 63 [2024-10-24 01:35:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:27,535 INFO L471 AbstractCegarLoop]: Abstraction has 2976 states and 4837 transitions. [2024-10-24 01:35:27,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-24 01:35:27,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 4837 transitions. [2024-10-24 01:35:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 01:35:27,537 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:27,537 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:27,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:35:27,537 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:27,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1440634225, now seen corresponding path program 1 times [2024-10-24 01:35:27,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:27,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629165820] [2024-10-24 01:35:27,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:27,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:27,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:27,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:27,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629165820] [2024-10-24 01:35:27,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629165820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:27,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:27,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:35:27,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218992303] [2024-10-24 01:35:27,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:27,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:35:27,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:27,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:35:27,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:35:27,606 INFO L87 Difference]: Start difference. First operand 2976 states and 4837 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-24 01:35:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:27,652 INFO L93 Difference]: Finished difference Result 6398 states and 10549 transitions. [2024-10-24 01:35:27,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:35:27,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-10-24 01:35:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:27,667 INFO L225 Difference]: With dead ends: 6398 [2024-10-24 01:35:27,668 INFO L226 Difference]: Without dead ends: 4312 [2024-10-24 01:35:27,672 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 [2024-10-24 01:35:27,673 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:27,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 465 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:27,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2024-10-24 01:35:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 4310. [2024-10-24 01:35:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4310 states, 4309 states have (on average 1.633325597586447) internal successors, (7038), 4309 states have internal predecessors, (7038), 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) [2024-10-24 01:35:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4310 states to 4310 states and 7038 transitions. [2024-10-24 01:35:27,759 INFO L78 Accepts]: Start accepts. Automaton has 4310 states and 7038 transitions. Word has length 63 [2024-10-24 01:35:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:27,759 INFO L471 AbstractCegarLoop]: Abstraction has 4310 states and 7038 transitions. [2024-10-24 01:35:27,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-24 01:35:27,759 INFO L276 IsEmpty]: Start isEmpty. Operand 4310 states and 7038 transitions. [2024-10-24 01:35:27,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 01:35:27,760 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:27,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:27,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:35:27,760 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:27,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:27,761 INFO L85 PathProgramCache]: Analyzing trace with hash 441896861, now seen corresponding path program 1 times [2024-10-24 01:35:27,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:27,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280233688] [2024-10-24 01:35:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:27,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:27,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:27,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280233688] [2024-10-24 01:35:27,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280233688] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:27,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:27,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:35:27,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961924757] [2024-10-24 01:35:27,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:27,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:35:27,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:35:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:35:27,888 INFO L87 Difference]: Start difference. First operand 4310 states and 7038 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-24 01:35:28,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:28,006 INFO L93 Difference]: Finished difference Result 13701 states and 22481 transitions. [2024-10-24 01:35:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:35:28,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2024-10-24 01:35:28,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:28,040 INFO L225 Difference]: With dead ends: 13701 [2024-10-24 01:35:28,040 INFO L226 Difference]: Without dead ends: 9472 [2024-10-24 01:35:28,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:28,050 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 377 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:28,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 679 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:35:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9472 states. [2024-10-24 01:35:28,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9472 to 6862. [2024-10-24 01:35:28,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6862 states, 6861 states have (on average 1.6265850459116746) internal successors, (11160), 6861 states have internal predecessors, (11160), 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) [2024-10-24 01:35:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6862 states to 6862 states and 11160 transitions. [2024-10-24 01:35:28,194 INFO L78 Accepts]: Start accepts. Automaton has 6862 states and 11160 transitions. Word has length 64 [2024-10-24 01:35:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:28,195 INFO L471 AbstractCegarLoop]: Abstraction has 6862 states and 11160 transitions. [2024-10-24 01:35:28,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2024-10-24 01:35:28,195 INFO L276 IsEmpty]: Start isEmpty. Operand 6862 states and 11160 transitions. [2024-10-24 01:35:28,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 01:35:28,195 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:28,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:28,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:35:28,196 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:28,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:28,196 INFO L85 PathProgramCache]: Analyzing trace with hash 760512649, now seen corresponding path program 1 times [2024-10-24 01:35:28,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:28,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298855961] [2024-10-24 01:35:28,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:28,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:28,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:28,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298855961] [2024-10-24 01:35:28,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298855961] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:28,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:28,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:35:28,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913482788] [2024-10-24 01:35:28,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:28,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:35:28,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:28,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:35:28,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:35:28,300 INFO L87 Difference]: Start difference. First operand 6862 states and 11160 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-24 01:35:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:28,422 INFO L93 Difference]: Finished difference Result 21433 states and 34993 transitions. [2024-10-24 01:35:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:35:28,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2024-10-24 01:35:28,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:28,451 INFO L225 Difference]: With dead ends: 21433 [2024-10-24 01:35:28,451 INFO L226 Difference]: Without dead ends: 14652 [2024-10-24 01:35:28,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:28,464 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 375 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:28,465 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 661 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14652 states. [2024-10-24 01:35:28,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14652 to 10714. [2024-10-24 01:35:28,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10714 states, 10713 states have (on average 1.6191542985158218) internal successors, (17346), 10713 states have internal predecessors, (17346), 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) [2024-10-24 01:35:28,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10714 states to 10714 states and 17346 transitions. [2024-10-24 01:35:28,708 INFO L78 Accepts]: Start accepts. Automaton has 10714 states and 17346 transitions. Word has length 65 [2024-10-24 01:35:28,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:28,708 INFO L471 AbstractCegarLoop]: Abstraction has 10714 states and 17346 transitions. [2024-10-24 01:35:28,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2024-10-24 01:35:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 10714 states and 17346 transitions. [2024-10-24 01:35:28,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 01:35:28,709 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:28,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:28,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:35:28,710 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:28,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash -809096294, now seen corresponding path program 1 times [2024-10-24 01:35:28,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:28,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208218100] [2024-10-24 01:35:28,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:28,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:28,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:28,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208218100] [2024-10-24 01:35:28,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208218100] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:28,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:28,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:35:28,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010589198] [2024-10-24 01:35:28,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:28,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:35:28,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:28,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:35:28,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:28,945 INFO L87 Difference]: Start difference. First operand 10714 states and 17346 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-10-24 01:35:29,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:29,109 INFO L93 Difference]: Finished difference Result 21349 states and 34582 transitions. [2024-10-24 01:35:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:35:29,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2024-10-24 01:35:29,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:29,140 INFO L225 Difference]: With dead ends: 21349 [2024-10-24 01:35:29,140 INFO L226 Difference]: Without dead ends: 10716 [2024-10-24 01:35:29,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:35:29,156 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 209 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:29,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 549 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:35:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2024-10-24 01:35:29,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 10714. [2024-10-24 01:35:29,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10714 states, 10713 states have (on average 1.6074862316811351) internal successors, (17221), 10713 states have internal predecessors, (17221), 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) [2024-10-24 01:35:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10714 states to 10714 states and 17221 transitions. [2024-10-24 01:35:29,328 INFO L78 Accepts]: Start accepts. Automaton has 10714 states and 17221 transitions. Word has length 67 [2024-10-24 01:35:29,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:29,329 INFO L471 AbstractCegarLoop]: Abstraction has 10714 states and 17221 transitions. [2024-10-24 01:35:29,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-10-24 01:35:29,329 INFO L276 IsEmpty]: Start isEmpty. Operand 10714 states and 17221 transitions. [2024-10-24 01:35:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 01:35:29,330 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:29,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:29,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:35:29,331 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:29,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:29,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1815177743, now seen corresponding path program 1 times [2024-10-24 01:35:29,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:29,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257072325] [2024-10-24 01:35:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:29,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:29,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:29,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257072325] [2024-10-24 01:35:29,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257072325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:29,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:29,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:35:29,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732697708] [2024-10-24 01:35:29,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:29,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:35:29,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:29,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:35:29,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:29,571 INFO L87 Difference]: Start difference. First operand 10714 states and 17221 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-24 01:35:29,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:29,724 INFO L93 Difference]: Finished difference Result 30659 states and 49436 transitions. [2024-10-24 01:35:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:35:29,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 70 [2024-10-24 01:35:29,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:29,766 INFO L225 Difference]: With dead ends: 30659 [2024-10-24 01:35:29,766 INFO L226 Difference]: Without dead ends: 20026 [2024-10-24 01:35:29,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-10-24 01:35:29,785 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 205 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:29,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 558 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:35:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20026 states. [2024-10-24 01:35:30,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20026 to 20024. [2024-10-24 01:35:30,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20024 states, 20023 states have (on average 1.5949657893422564) internal successors, (31936), 20023 states have internal predecessors, (31936), 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) [2024-10-24 01:35:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20024 states to 20024 states and 31936 transitions. [2024-10-24 01:35:30,266 INFO L78 Accepts]: Start accepts. Automaton has 20024 states and 31936 transitions. Word has length 70 [2024-10-24 01:35:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:30,267 INFO L471 AbstractCegarLoop]: Abstraction has 20024 states and 31936 transitions. [2024-10-24 01:35:30,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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) [2024-10-24 01:35:30,267 INFO L276 IsEmpty]: Start isEmpty. Operand 20024 states and 31936 transitions. [2024-10-24 01:35:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 01:35:30,268 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:30,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:35:30,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:35:30,268 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:30,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:30,269 INFO L85 PathProgramCache]: Analyzing trace with hash 434025879, now seen corresponding path program 1 times [2024-10-24 01:35:30,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:30,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047334987] [2024-10-24 01:35:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:30,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:30,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:30,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047334987] [2024-10-24 01:35:30,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047334987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:30,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:30,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:35:30,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487479350] [2024-10-24 01:35:30,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:30,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:35:30,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:30,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:35:30,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:30,679 INFO L87 Difference]: Start difference. First operand 20024 states and 31936 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-24 01:35:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:30,789 INFO L93 Difference]: Finished difference Result 20750 states and 33023 transitions. [2024-10-24 01:35:30,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:35:30,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 71 [2024-10-24 01:35:30,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:30,831 INFO L225 Difference]: With dead ends: 20750 [2024-10-24 01:35:30,832 INFO L226 Difference]: Without dead ends: 20748 [2024-10-24 01:35:30,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:30,844 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 0 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:30,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 782 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20748 states. [2024-10-24 01:35:31,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20748 to 20748. [2024-10-24 01:35:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20748 states, 20747 states have (on average 1.5737697016436112) internal successors, (32651), 20747 states have internal predecessors, (32651), 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) [2024-10-24 01:35:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20748 states to 20748 states and 32651 transitions. [2024-10-24 01:35:31,220 INFO L78 Accepts]: Start accepts. Automaton has 20748 states and 32651 transitions. Word has length 71 [2024-10-24 01:35:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:31,220 INFO L471 AbstractCegarLoop]: Abstraction has 20748 states and 32651 transitions. [2024-10-24 01:35:31,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2024-10-24 01:35:31,220 INFO L276 IsEmpty]: Start isEmpty. Operand 20748 states and 32651 transitions. [2024-10-24 01:35:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 01:35:31,222 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:31,223 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:35:31,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:35:31,223 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:31,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash 575576521, now seen corresponding path program 1 times [2024-10-24 01:35:31,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:31,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349313195] [2024-10-24 01:35:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:31,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 01:35:31,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:31,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349313195] [2024-10-24 01:35:31,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349313195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:31,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:31,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:35:31,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793993415] [2024-10-24 01:35:31,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:31,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:35:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:35:31,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:31,355 INFO L87 Difference]: Start difference. First operand 20748 states and 32651 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-10-24 01:35:31,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:31,668 INFO L93 Difference]: Finished difference Result 50556 states and 79853 transitions. [2024-10-24 01:35:31,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:35:31,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 [2024-10-24 01:35:31,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:31,758 INFO L225 Difference]: With dead ends: 50556 [2024-10-24 01:35:31,758 INFO L226 Difference]: Without dead ends: 40764 [2024-10-24 01:35:31,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:35:31,787 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 479 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:31,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 934 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:35:31,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40764 states. [2024-10-24 01:35:32,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 31834. [2024-10-24 01:35:32,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31834 states, 31833 states have (on average 1.5725504979109728) internal successors, (50059), 31833 states have internal predecessors, (50059), 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) [2024-10-24 01:35:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31834 states to 31834 states and 50059 transitions. [2024-10-24 01:35:32,366 INFO L78 Accepts]: Start accepts. Automaton has 31834 states and 50059 transitions. Word has length 92 [2024-10-24 01:35:32,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:32,366 INFO L471 AbstractCegarLoop]: Abstraction has 31834 states and 50059 transitions. [2024-10-24 01:35:32,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-10-24 01:35:32,366 INFO L276 IsEmpty]: Start isEmpty. Operand 31834 states and 50059 transitions. [2024-10-24 01:35:32,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 01:35:32,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:32,370 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:35:32,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:35:32,371 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:32,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:32,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1946475532, now seen corresponding path program 1 times [2024-10-24 01:35:32,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:32,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776609907] [2024-10-24 01:35:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:32,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:35:32,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:32,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776609907] [2024-10-24 01:35:32,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776609907] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:32,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:32,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:35:32,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234626658] [2024-10-24 01:35:32,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:32,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:35:32,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:32,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:35:32,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:32,693 INFO L87 Difference]: Start difference. First operand 31834 states and 50059 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-10-24 01:35:32,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:32,967 INFO L93 Difference]: Finished difference Result 54448 states and 86017 transitions. [2024-10-24 01:35:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:35:32,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 [2024-10-24 01:35:32,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:33,152 INFO L225 Difference]: With dead ends: 54448 [2024-10-24 01:35:33,152 INFO L226 Difference]: Without dead ends: 44656 [2024-10-24 01:35:33,185 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:35:33,186 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 478 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:33,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 870 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:35:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44656 states. [2024-10-24 01:35:33,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44656 to 43066. [2024-10-24 01:35:33,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43066 states, 43065 states have (on average 1.5734587251828631) internal successors, (67761), 43065 states have internal predecessors, (67761), 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) [2024-10-24 01:35:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43066 states to 43066 states and 67761 transitions. [2024-10-24 01:35:34,135 INFO L78 Accepts]: Start accepts. Automaton has 43066 states and 67761 transitions. Word has length 92 [2024-10-24 01:35:34,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:34,135 INFO L471 AbstractCegarLoop]: Abstraction has 43066 states and 67761 transitions. [2024-10-24 01:35:34,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-10-24 01:35:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 43066 states and 67761 transitions. [2024-10-24 01:35:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-24 01:35:34,144 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:34,145 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:35:34,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:35:34,145 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:34,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:34,146 INFO L85 PathProgramCache]: Analyzing trace with hash 621891858, now seen corresponding path program 1 times [2024-10-24 01:35:34,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:34,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578481940] [2024-10-24 01:35:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:34,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:35:34,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:34,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578481940] [2024-10-24 01:35:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578481940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:34,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:34,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:35:34,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724039080] [2024-10-24 01:35:34,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:34,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:35:34,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:34,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:35:34,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:34,314 INFO L87 Difference]: Start difference. First operand 43066 states and 67761 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-10-24 01:35:34,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:34,630 INFO L93 Difference]: Finished difference Result 61062 states and 96645 transitions. [2024-10-24 01:35:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:35:34,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 [2024-10-24 01:35:34,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:34,887 INFO L225 Difference]: With dead ends: 61062 [2024-10-24 01:35:34,888 INFO L226 Difference]: Without dead ends: 51040 [2024-10-24 01:35:34,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 01:35:34,909 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 478 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:34,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 918 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:35:34,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51040 states. [2024-10-24 01:35:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51040 to 49450. [2024-10-24 01:35:35,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49450 states, 49449 states have (on average 1.5763513923436268) internal successors, (77949), 49449 states have internal predecessors, (77949), 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) [2024-10-24 01:35:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49450 states to 49450 states and 77949 transitions. [2024-10-24 01:35:35,678 INFO L78 Accepts]: Start accepts. Automaton has 49450 states and 77949 transitions. Word has length 92 [2024-10-24 01:35:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:35,678 INFO L471 AbstractCegarLoop]: Abstraction has 49450 states and 77949 transitions. [2024-10-24 01:35:35,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-10-24 01:35:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 49450 states and 77949 transitions. [2024-10-24 01:35:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 01:35:35,681 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:35,681 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:35:35,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:35:35,682 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:35,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:35,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1332792260, now seen corresponding path program 1 times [2024-10-24 01:35:35,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:35,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495371222] [2024-10-24 01:35:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:35,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:35,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:35,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495371222] [2024-10-24 01:35:35,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495371222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:35,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:35,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:35:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226603183] [2024-10-24 01:35:35,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:35,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:35:35,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:35:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:35:35,799 INFO L87 Difference]: Start difference. First operand 49450 states and 77949 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-10-24 01:35:36,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:36,285 INFO L93 Difference]: Finished difference Result 92379 states and 146098 transitions. [2024-10-24 01:35:36,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:35:36,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 93 [2024-10-24 01:35:36,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:36,344 INFO L225 Difference]: With dead ends: 92379 [2024-10-24 01:35:36,344 INFO L226 Difference]: Without dead ends: 43010 [2024-10-24 01:35:36,385 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 [2024-10-24 01:35:36,386 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 87 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:36,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 431 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:36,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43010 states. [2024-10-24 01:35:37,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43010 to 43004. [2024-10-24 01:35:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43004 states, 43003 states have (on average 1.5771690347185081) internal successors, (67823), 43003 states have internal predecessors, (67823), 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) [2024-10-24 01:35:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43004 states to 43004 states and 67823 transitions. [2024-10-24 01:35:37,311 INFO L78 Accepts]: Start accepts. Automaton has 43004 states and 67823 transitions. Word has length 93 [2024-10-24 01:35:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:37,312 INFO L471 AbstractCegarLoop]: Abstraction has 43004 states and 67823 transitions. [2024-10-24 01:35:37,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-10-24 01:35:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 43004 states and 67823 transitions. [2024-10-24 01:35:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 01:35:37,313 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:37,314 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:35:37,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:35:37,314 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:37,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:37,315 INFO L85 PathProgramCache]: Analyzing trace with hash -336919691, now seen corresponding path program 1 times [2024-10-24 01:35:37,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:37,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317476679] [2024-10-24 01:35:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:37,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 01:35:37,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:37,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317476679] [2024-10-24 01:35:37,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317476679] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:37,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:37,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:35:37,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21240852] [2024-10-24 01:35:37,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:37,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:35:37,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:37,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:35:37,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:35:37,581 INFO L87 Difference]: Start difference. First operand 43004 states and 67823 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2024-10-24 01:35:37,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:37,909 INFO L93 Difference]: Finished difference Result 101052 states and 160210 transitions. [2024-10-24 01:35:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:35:37,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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 93 [2024-10-24 01:35:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:38,038 INFO L225 Difference]: With dead ends: 101052 [2024-10-24 01:35:38,038 INFO L226 Difference]: Without dead ends: 76470 [2024-10-24 01:35:38,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:38,388 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 387 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:38,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 565 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76470 states. [2024-10-24 01:35:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76470 to 66036. [2024-10-24 01:35:39,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66036 states, 66035 states have (on average 1.5795411524191716) internal successors, (104305), 66035 states have internal predecessors, (104305), 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) [2024-10-24 01:35:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66036 states to 66036 states and 104305 transitions. [2024-10-24 01:35:39,198 INFO L78 Accepts]: Start accepts. Automaton has 66036 states and 104305 transitions. Word has length 93 [2024-10-24 01:35:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:39,199 INFO L471 AbstractCegarLoop]: Abstraction has 66036 states and 104305 transitions. [2024-10-24 01:35:39,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2024-10-24 01:35:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 66036 states and 104305 transitions. [2024-10-24 01:35:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 01:35:39,200 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:39,200 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:35:39,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:35:39,200 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:39,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:39,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1876289132, now seen corresponding path program 1 times [2024-10-24 01:35:39,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:39,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423997553] [2024-10-24 01:35:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:39,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:35:39,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:39,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423997553] [2024-10-24 01:35:39,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423997553] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:39,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:39,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:35:39,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835717882] [2024-10-24 01:35:39,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:39,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:35:39,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:39,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:35:39,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:35:39,287 INFO L87 Difference]: Start difference. First operand 66036 states and 104305 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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) [2024-10-24 01:35:40,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:40,095 INFO L93 Difference]: Finished difference Result 156095 states and 246903 transitions. [2024-10-24 01:35:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:35:40,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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 93 [2024-10-24 01:35:40,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:40,381 INFO L225 Difference]: With dead ends: 156095 [2024-10-24 01:35:40,381 INFO L226 Difference]: Without dead ends: 112119 [2024-10-24 01:35:40,421 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 [2024-10-24 01:35:40,423 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 96 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:40,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 365 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112119 states. [2024-10-24 01:35:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112119 to 111798. [2024-10-24 01:35:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111798 states, 111797 states have (on average 1.5774931348783956) internal successors, (176359), 111797 states have internal predecessors, (176359), 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) [2024-10-24 01:35:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111798 states to 111798 states and 176359 transitions. [2024-10-24 01:35:41,955 INFO L78 Accepts]: Start accepts. Automaton has 111798 states and 176359 transitions. Word has length 93 [2024-10-24 01:35:41,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:41,956 INFO L471 AbstractCegarLoop]: Abstraction has 111798 states and 176359 transitions. [2024-10-24 01:35:41,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 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) [2024-10-24 01:35:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 111798 states and 176359 transitions. [2024-10-24 01:35:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 01:35:41,957 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:41,957 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:35:41,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:35:41,957 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:41,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:41,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2036274214, now seen corresponding path program 1 times [2024-10-24 01:35:41,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:41,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203762577] [2024-10-24 01:35:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:41,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:35:42,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:42,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203762577] [2024-10-24 01:35:42,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203762577] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:42,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:42,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:35:42,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400092964] [2024-10-24 01:35:42,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:42,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:35:42,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:35:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:35:42,062 INFO L87 Difference]: Start difference. First operand 111798 states and 176359 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2024-10-24 01:35:43,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:43,147 INFO L93 Difference]: Finished difference Result 203867 states and 322452 transitions. [2024-10-24 01:35:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:35:43,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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 93 [2024-10-24 01:35:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:43,412 INFO L225 Difference]: With dead ends: 203867 [2024-10-24 01:35:43,412 INFO L226 Difference]: Without dead ends: 156131 [2024-10-24 01:35:43,481 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 [2024-10-24 01:35:43,482 INFO L432 NwaCegarLoop]: 307 mSDtfsCounter, 222 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:43,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 619 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156131 states. [2024-10-24 01:35:45,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156131 to 149890. [2024-10-24 01:35:45,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149890 states, 149889 states have (on average 1.5744584325734376) internal successors, (235994), 149889 states have internal predecessors, (235994), 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) [2024-10-24 01:35:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149890 states to 149890 states and 235994 transitions. [2024-10-24 01:35:45,762 INFO L78 Accepts]: Start accepts. Automaton has 149890 states and 235994 transitions. Word has length 93 [2024-10-24 01:35:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:45,763 INFO L471 AbstractCegarLoop]: Abstraction has 149890 states and 235994 transitions. [2024-10-24 01:35:45,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2024-10-24 01:35:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 149890 states and 235994 transitions. [2024-10-24 01:35:45,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 01:35:45,765 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:45,765 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:35:45,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 01:35:45,766 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:45,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:45,766 INFO L85 PathProgramCache]: Analyzing trace with hash 102983187, now seen corresponding path program 1 times [2024-10-24 01:35:45,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:45,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280969827] [2024-10-24 01:35:45,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:45,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:35:46,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:46,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280969827] [2024-10-24 01:35:46,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280969827] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:46,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:46,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:35:46,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100117714] [2024-10-24 01:35:46,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:46,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:35:46,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:46,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:35:46,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:35:46,125 INFO L87 Difference]: Start difference. First operand 149890 states and 235994 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2024-10-24 01:35:47,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:47,783 INFO L93 Difference]: Finished difference Result 337004 states and 533817 transitions. [2024-10-24 01:35:47,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:35:47,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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 93 [2024-10-24 01:35:47,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:48,261 INFO L225 Difference]: With dead ends: 337004 [2024-10-24 01:35:48,261 INFO L226 Difference]: Without dead ends: 259422 [2024-10-24 01:35:48,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:35:48,360 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 398 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:48,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 543 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259422 states. [2024-10-24 01:35:51,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259422 to 226238. [2024-10-24 01:35:52,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226238 states, 226237 states have (on average 1.5783359927863259) internal successors, (357078), 226237 states have internal predecessors, (357078), 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) [2024-10-24 01:35:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226238 states to 226238 states and 357078 transitions. [2024-10-24 01:35:52,590 INFO L78 Accepts]: Start accepts. Automaton has 226238 states and 357078 transitions. Word has length 93 [2024-10-24 01:35:52,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:35:52,590 INFO L471 AbstractCegarLoop]: Abstraction has 226238 states and 357078 transitions. [2024-10-24 01:35:52,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 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) [2024-10-24 01:35:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 226238 states and 357078 transitions. [2024-10-24 01:35:52,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-24 01:35:52,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:35:52,592 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:35:52,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 01:35:52,592 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:35:52,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:35:52,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1536256382, now seen corresponding path program 1 times [2024-10-24 01:35:52,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:35:52,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482155161] [2024-10-24 01:35:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:35:52,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:35:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:35:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:35:52,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:35:52,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482155161] [2024-10-24 01:35:52,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482155161] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:35:52,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:35:52,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:35:52,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406294772] [2024-10-24 01:35:52,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:35:52,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:35:52,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:35:52,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:35:52,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:35:52,732 INFO L87 Difference]: Start difference. First operand 226238 states and 357078 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-10-24 01:35:55,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:35:55,494 INFO L93 Difference]: Finished difference Result 666615 states and 1051925 transitions. [2024-10-24 01:35:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:35:55,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2024-10-24 01:35:55,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:35:56,368 INFO L225 Difference]: With dead ends: 666615 [2024-10-24 01:35:56,368 INFO L226 Difference]: Without dead ends: 440460 [2024-10-24 01:35:56,552 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 [2024-10-24 01:35:56,553 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 153 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:35:56,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 488 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:35:57,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440460 states. [2024-10-24 01:36:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440460 to 440458. [2024-10-24 01:36:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440458 states, 440457 states have (on average 1.567024703887099) internal successors, (690207), 440457 states have internal predecessors, (690207), 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) [2024-10-24 01:36:04,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440458 states to 440458 states and 690207 transitions. [2024-10-24 01:36:04,860 INFO L78 Accepts]: Start accepts. Automaton has 440458 states and 690207 transitions. Word has length 94 [2024-10-24 01:36:04,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:36:04,860 INFO L471 AbstractCegarLoop]: Abstraction has 440458 states and 690207 transitions. [2024-10-24 01:36:04,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-10-24 01:36:04,860 INFO L276 IsEmpty]: Start isEmpty. Operand 440458 states and 690207 transitions. [2024-10-24 01:36:04,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-24 01:36:04,863 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:36:04,863 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 01:36:04,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 01:36:04,863 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:36:04,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:36:04,864 INFO L85 PathProgramCache]: Analyzing trace with hash -627372532, now seen corresponding path program 1 times [2024-10-24 01:36:04,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:36:04,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009243724] [2024-10-24 01:36:04,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:36:04,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:36:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:36:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:36:04,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:36:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009243724] [2024-10-24 01:36:04,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009243724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:36:04,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:36:04,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:36:04,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971790415] [2024-10-24 01:36:04,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:36:04,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:36:04,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:36:04,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:36:04,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:36:04,936 INFO L87 Difference]: Start difference. First operand 440458 states and 690207 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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)