./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/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.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/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.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 cf92f342b2da275c63d151f2d4ed52683d7003506826ae2897efde5e3c66195f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:26:56,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:26:56,098 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:26:56,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:26:56,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:26:56,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:26:56,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:26:56,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:26:56,128 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:26:56,131 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:26:56,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:26:56,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:26:56,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:26:56,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:26:56,132 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:26:56,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:26:56,134 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:26:56,134 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:26:56,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:26:56,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:26:56,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:26:56,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:26:56,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:26:56,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:26:56,135 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:26:56,135 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:26:56,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:26:56,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:26:56,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:26:56,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:26:56,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:26:56,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:26:56,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:26:56,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:26:56,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:26:56,137 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:26:56,137 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:26:56,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:26:56,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:26:56,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:26:56,138 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:26:56,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:26:56,138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf92f342b2da275c63d151f2d4ed52683d7003506826ae2897efde5e3c66195f [2024-10-24 01:26:56,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:26:56,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:26:56,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:26:56,371 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:26:56,372 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:26:56,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2024-10-24 01:26:57,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:26:57,798 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:26:57,798 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2024-10-24 01:26:57,810 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c596905b0/6dd7e25b663e4a4593cdcc84b4dca683/FLAGd73f468be [2024-10-24 01:26:58,195 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c596905b0/6dd7e25b663e4a4593cdcc84b4dca683 [2024-10-24 01:26:58,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:26:58,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:26:58,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:26:58,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:26:58,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:26:58,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a374a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58, skipping insertion in model container [2024-10-24 01:26:58,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,239 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:26:58,530 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/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c[14373,14386] [2024-10-24 01:26:58,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:26:58,555 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:26:58,610 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/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c[14373,14386] [2024-10-24 01:26:58,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:26:58,632 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:26:58,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58 WrapperNode [2024-10-24 01:26:58,633 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:26:58,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:26:58,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:26:58,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:26:58,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,696 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 496 [2024-10-24 01:26:58,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:26:58,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:26:58,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:26:58,698 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:26:58,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,716 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,733 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 01:26:58,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,743 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,748 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,752 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,754 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,759 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:26:58,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:26:58,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:26:58,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:26:58,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (1/1) ... [2024-10-24 01:26:58,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:26:58,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:26:58,789 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 01:26:58,794 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 01:26:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:26:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:26:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:26:58,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:26:58,908 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:26:58,910 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:26:59,337 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-10-24 01:26:59,338 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:26:59,380 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:26:59,381 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 01:26:59,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:26:59 BoogieIcfgContainer [2024-10-24 01:26:59,382 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:26:59,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:26:59,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:26:59,388 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:26:59,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:26:58" (1/3) ... [2024-10-24 01:26:59,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4159ede8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:26:59, skipping insertion in model container [2024-10-24 01:26:59,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:26:58" (2/3) ... [2024-10-24 01:26:59,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4159ede8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:26:59, skipping insertion in model container [2024-10-24 01:26:59,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:26:59" (3/3) ... [2024-10-24 01:26:59,391 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c [2024-10-24 01:26:59,405 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:26:59,405 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:26:59,459 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:26:59,464 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;@5a4e8e1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:26:59,464 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:26:59,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.814516129032258) internal successors, (225), 125 states have internal predecessors, (225), 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 01:26:59,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 01:26:59,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:59,481 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] [2024-10-24 01:26:59,481 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:59,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:59,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1384301439, now seen corresponding path program 1 times [2024-10-24 01:26:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:59,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027647715] [2024-10-24 01:26:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:26:59,781 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 01:26:59,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:26:59,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027647715] [2024-10-24 01:26:59,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027647715] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:26:59,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:26:59,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:26:59,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971594505] [2024-10-24 01:26:59,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:26:59,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 01:26:59,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:26:59,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 01:26:59,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:26:59,811 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.814516129032258) internal successors, (225), 125 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 01:26:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:26:59,849 INFO L93 Difference]: Finished difference Result 195 states and 344 transitions. [2024-10-24 01:26:59,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 01:26:59,852 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2024-10-24 01:26:59,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:26:59,859 INFO L225 Difference]: With dead ends: 195 [2024-10-24 01:26:59,860 INFO L226 Difference]: Without dead ends: 124 [2024-10-24 01:26:59,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:26:59,866 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:26:59,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:26:59,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-10-24 01:26:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-10-24 01:26:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.7886178861788617) internal successors, (220), 123 states have internal predecessors, (220), 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 01:26:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 220 transitions. [2024-10-24 01:26:59,907 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 220 transitions. Word has length 34 [2024-10-24 01:26:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:26:59,907 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 220 transitions. [2024-10-24 01:26:59,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 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 01:26:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 220 transitions. [2024-10-24 01:26:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 01:26:59,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:26:59,910 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] [2024-10-24 01:26:59,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:26:59,911 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:26:59,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:26:59,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1221722115, now seen corresponding path program 1 times [2024-10-24 01:26:59,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:26:59,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873926191] [2024-10-24 01:26:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:26:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:26:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:00,117 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 01:27:00,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:00,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873926191] [2024-10-24 01:27:00,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873926191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:00,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:00,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:00,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094413247] [2024-10-24 01:27:00,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:00,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:00,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:00,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:00,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:00,121 INFO L87 Difference]: Start difference. First operand 124 states and 220 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 01:27:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:00,204 INFO L93 Difference]: Finished difference Result 193 states and 337 transitions. [2024-10-24 01:27:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:00,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2024-10-24 01:27:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:00,206 INFO L225 Difference]: With dead ends: 193 [2024-10-24 01:27:00,206 INFO L226 Difference]: Without dead ends: 124 [2024-10-24 01:27:00,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:00,208 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 0 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:00,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 618 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:27:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-10-24 01:27:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-10-24 01:27:00,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.5447154471544715) internal successors, (190), 123 states have internal predecessors, (190), 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 01:27:00,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 190 transitions. [2024-10-24 01:27:00,218 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 190 transitions. Word has length 34 [2024-10-24 01:27:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:00,218 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 190 transitions. [2024-10-24 01:27:00,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 01:27:00,219 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 190 transitions. [2024-10-24 01:27:00,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 01:27:00,220 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:00,221 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 01:27:00,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:27:00,221 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:00,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:00,221 INFO L85 PathProgramCache]: Analyzing trace with hash 480220631, now seen corresponding path program 1 times [2024-10-24 01:27:00,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:00,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662707198] [2024-10-24 01:27:00,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:00,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:00,358 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 01:27:00,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:00,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662707198] [2024-10-24 01:27:00,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662707198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:00,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:00,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:00,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849835977] [2024-10-24 01:27:00,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:00,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:00,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:00,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:00,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:00,359 INFO L87 Difference]: Start difference. First operand 124 states and 190 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 01:27:00,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:00,422 INFO L93 Difference]: Finished difference Result 246 states and 400 transitions. [2024-10-24 01:27:00,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:00,422 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 01:27:00,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:00,424 INFO L225 Difference]: With dead ends: 246 [2024-10-24 01:27:00,424 INFO L226 Difference]: Without dead ends: 180 [2024-10-24 01:27:00,424 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 01:27:00,425 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 88 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:00,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 330 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:27:00,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-10-24 01:27:00,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2024-10-24 01:27:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.5819209039548023) internal successors, (280), 177 states have internal predecessors, (280), 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 01:27:00,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 280 transitions. [2024-10-24 01:27:00,447 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 280 transitions. Word has length 63 [2024-10-24 01:27:00,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:00,447 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 280 transitions. [2024-10-24 01:27:00,447 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 01:27:00,447 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 280 transitions. [2024-10-24 01:27:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 01:27:00,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:00,449 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 01:27:00,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:27:00,453 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:00,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:00,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1065677961, now seen corresponding path program 1 times [2024-10-24 01:27:00,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:00,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109862662] [2024-10-24 01:27:00,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:00,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:00,564 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 01:27:00,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:00,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109862662] [2024-10-24 01:27:00,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109862662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:00,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:00,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:00,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211317587] [2024-10-24 01:27:00,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:00,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:00,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:00,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:00,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:00,567 INFO L87 Difference]: Start difference. First operand 178 states and 280 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 01:27:00,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:00,590 INFO L93 Difference]: Finished difference Result 402 states and 660 transitions. [2024-10-24 01:27:00,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 01:27:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:00,592 INFO L225 Difference]: With dead ends: 402 [2024-10-24 01:27:00,592 INFO L226 Difference]: Without dead ends: 282 [2024-10-24 01:27:00,593 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 01:27:00,594 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 90 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:00,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 342 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:00,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-10-24 01:27:00,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2024-10-24 01:27:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.6236559139784945) internal successors, (453), 279 states have internal predecessors, (453), 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 01:27:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 453 transitions. [2024-10-24 01:27:00,607 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 453 transitions. Word has length 65 [2024-10-24 01:27:00,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:00,607 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 453 transitions. [2024-10-24 01:27:00,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 01:27:00,608 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 453 transitions. [2024-10-24 01:27:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 01:27:00,609 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:00,610 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 01:27:00,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:27:00,610 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:00,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:00,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1472684379, now seen corresponding path program 1 times [2024-10-24 01:27:00,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:00,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672667914] [2024-10-24 01:27:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:00,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:00,717 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 01:27:00,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:00,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672667914] [2024-10-24 01:27:00,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672667914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:00,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:00,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:00,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095792973] [2024-10-24 01:27:00,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:00,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:00,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:00,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:00,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:00,722 INFO L87 Difference]: Start difference. First operand 280 states and 453 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 01:27:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:00,751 INFO L93 Difference]: Finished difference Result 692 states and 1151 transitions. [2024-10-24 01:27:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:00,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 01:27:00,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:00,753 INFO L225 Difference]: With dead ends: 692 [2024-10-24 01:27:00,753 INFO L226 Difference]: Without dead ends: 470 [2024-10-24 01:27:00,756 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 01:27:00,758 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 84 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:00,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 343 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2024-10-24 01:27:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 468. [2024-10-24 01:27:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.6466809421841542) internal successors, (769), 467 states have internal predecessors, (769), 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 01:27:00,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 769 transitions. [2024-10-24 01:27:00,788 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 769 transitions. Word has length 67 [2024-10-24 01:27:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:00,788 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 769 transitions. [2024-10-24 01:27:00,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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 01:27:00,788 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 769 transitions. [2024-10-24 01:27:00,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 01:27:00,790 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:00,790 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] [2024-10-24 01:27:00,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:27:00,790 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:00,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:00,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1702765645, now seen corresponding path program 1 times [2024-10-24 01:27:00,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:00,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700809302] [2024-10-24 01:27:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:00,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:00,918 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 01:27:00,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:00,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700809302] [2024-10-24 01:27:00,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700809302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:00,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:00,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651684689] [2024-10-24 01:27:00,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:00,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:00,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:00,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:00,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:00,920 INFO L87 Difference]: Start difference. First operand 468 states and 769 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 01:27:01,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:01,069 INFO L93 Difference]: Finished difference Result 1980 states and 3359 transitions. [2024-10-24 01:27:01,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:27:01,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 69 [2024-10-24 01:27:01,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:01,076 INFO L225 Difference]: With dead ends: 1980 [2024-10-24 01:27:01,076 INFO L226 Difference]: Without dead ends: 1570 [2024-10-24 01:27:01,077 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 01:27:01,080 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 659 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:01,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1133 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:27:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2024-10-24 01:27:01,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 826. [2024-10-24 01:27:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 1.6654545454545455) internal successors, (1374), 825 states have internal predecessors, (1374), 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 01:27:01,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1374 transitions. [2024-10-24 01:27:01,112 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1374 transitions. Word has length 69 [2024-10-24 01:27:01,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:01,112 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 1374 transitions. [2024-10-24 01:27:01,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 01:27:01,113 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1374 transitions. [2024-10-24 01:27:01,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 01:27:01,117 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:01,117 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 01:27:01,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:27:01,117 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:01,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:01,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1183406413, now seen corresponding path program 1 times [2024-10-24 01:27:01,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:01,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222526989] [2024-10-24 01:27:01,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:01,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:01,221 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 01:27:01,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222526989] [2024-10-24 01:27:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222526989] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:01,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:01,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:01,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852158075] [2024-10-24 01:27:01,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:01,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:01,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:01,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:01,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:01,224 INFO L87 Difference]: Start difference. First operand 826 states and 1374 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 01:27:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:01,296 INFO L93 Difference]: Finished difference Result 2398 states and 4060 transitions. [2024-10-24 01:27:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:01,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 01:27:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:01,302 INFO L225 Difference]: With dead ends: 2398 [2024-10-24 01:27:01,302 INFO L226 Difference]: Without dead ends: 1630 [2024-10-24 01:27:01,304 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 01:27:01,307 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 327 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:01,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 605 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:01,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2024-10-24 01:27:01,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1219. [2024-10-24 01:27:01,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 1.674055829228243) internal successors, (2039), 1218 states have internal predecessors, (2039), 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 01:27:01,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 2039 transitions. [2024-10-24 01:27:01,338 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 2039 transitions. Word has length 70 [2024-10-24 01:27:01,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:01,338 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 2039 transitions. [2024-10-24 01:27:01,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 01:27:01,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 2039 transitions. [2024-10-24 01:27:01,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 01:27:01,339 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:01,340 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 01:27:01,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:27:01,340 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:01,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:01,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1621689265, now seen corresponding path program 1 times [2024-10-24 01:27:01,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:01,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737496340] [2024-10-24 01:27:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:01,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:01,409 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 01:27:01,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:01,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737496340] [2024-10-24 01:27:01,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737496340] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:01,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:01,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:01,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080037147] [2024-10-24 01:27:01,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:01,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:01,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:01,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:01,411 INFO L87 Difference]: Start difference. First operand 1219 states and 2039 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 01:27:01,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:01,473 INFO L93 Difference]: Finished difference Result 2417 states and 4058 transitions. [2024-10-24 01:27:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:01,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 01:27:01,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:01,479 INFO L225 Difference]: With dead ends: 2417 [2024-10-24 01:27:01,480 INFO L226 Difference]: Without dead ends: 1747 [2024-10-24 01:27:01,481 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 01:27:01,482 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 91 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:01,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 410 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:01,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2024-10-24 01:27:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1745. [2024-10-24 01:27:01,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 1.6639908256880733) internal successors, (2902), 1744 states have internal predecessors, (2902), 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 01:27:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2902 transitions. [2024-10-24 01:27:01,525 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2902 transitions. Word has length 71 [2024-10-24 01:27:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:01,525 INFO L471 AbstractCegarLoop]: Abstraction has 1745 states and 2902 transitions. [2024-10-24 01:27:01,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 01:27:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2902 transitions. [2024-10-24 01:27:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 01:27:01,528 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:01,528 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 01:27:01,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:27:01,529 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:01,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:01,529 INFO L85 PathProgramCache]: Analyzing trace with hash -894960913, now seen corresponding path program 1 times [2024-10-24 01:27:01,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:01,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563108570] [2024-10-24 01:27:01,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:01,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:01,578 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 01:27:01,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:01,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563108570] [2024-10-24 01:27:01,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563108570] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:01,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:01,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:01,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605567160] [2024-10-24 01:27:01,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:01,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:01,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:01,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:01,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:01,580 INFO L87 Difference]: Start difference. First operand 1745 states and 2902 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 01:27:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:01,617 INFO L93 Difference]: Finished difference Result 3413 states and 5698 transitions. [2024-10-24 01:27:01,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:01,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 01:27:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:01,627 INFO L225 Difference]: With dead ends: 3413 [2024-10-24 01:27:01,627 INFO L226 Difference]: Without dead ends: 2469 [2024-10-24 01:27:01,629 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 01:27:01,629 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 85 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:01,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 399 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2024-10-24 01:27:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2024-10-24 01:27:01,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2466 states have (on average 1.6536901865369018) internal successors, (4078), 2466 states have internal predecessors, (4078), 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 01:27:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4078 transitions. [2024-10-24 01:27:01,682 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4078 transitions. Word has length 71 [2024-10-24 01:27:01,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:01,683 INFO L471 AbstractCegarLoop]: Abstraction has 2467 states and 4078 transitions. [2024-10-24 01:27:01,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 01:27:01,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4078 transitions. [2024-10-24 01:27:01,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 01:27:01,684 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:01,684 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 01:27:01,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:27:01,684 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:01,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:01,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2026376138, now seen corresponding path program 1 times [2024-10-24 01:27:01,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:01,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14252572] [2024-10-24 01:27:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:01,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:01,758 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 01:27:01,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:01,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14252572] [2024-10-24 01:27:01,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14252572] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:01,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:01,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:01,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729353002] [2024-10-24 01:27:01,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:01,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:01,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:01,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:01,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:01,761 INFO L87 Difference]: Start difference. First operand 2467 states and 4078 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 01:27:01,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:01,883 INFO L93 Difference]: Finished difference Result 7754 states and 12893 transitions. [2024-10-24 01:27:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:01,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 01:27:01,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:01,900 INFO L225 Difference]: With dead ends: 7754 [2024-10-24 01:27:01,900 INFO L226 Difference]: Without dead ends: 5403 [2024-10-24 01:27:01,904 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 01:27:01,905 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 326 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:01,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 602 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:27:01,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2024-10-24 01:27:01,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 3917. [2024-10-24 01:27:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3917 states, 3916 states have (on average 1.646067415730337) internal successors, (6446), 3916 states have internal predecessors, (6446), 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 01:27:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3917 states to 3917 states and 6446 transitions. [2024-10-24 01:27:01,990 INFO L78 Accepts]: Start accepts. Automaton has 3917 states and 6446 transitions. Word has length 71 [2024-10-24 01:27:01,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:01,990 INFO L471 AbstractCegarLoop]: Abstraction has 3917 states and 6446 transitions. [2024-10-24 01:27:01,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 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 01:27:01,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3917 states and 6446 transitions. [2024-10-24 01:27:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 01:27:01,991 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:01,992 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 01:27:01,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:27:01,992 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:01,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1319668305, now seen corresponding path program 1 times [2024-10-24 01:27:01,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:01,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569260295] [2024-10-24 01:27:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:01,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:02,033 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 01:27:02,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:02,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569260295] [2024-10-24 01:27:02,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569260295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:02,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:02,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:02,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321715159] [2024-10-24 01:27:02,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:02,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:02,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:02,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:02,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:02,035 INFO L87 Difference]: Start difference. First operand 3917 states and 6446 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 01:27:02,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:02,100 INFO L93 Difference]: Finished difference Result 8718 states and 14491 transitions. [2024-10-24 01:27:02,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:02,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 01:27:02,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:02,117 INFO L225 Difference]: With dead ends: 8718 [2024-10-24 01:27:02,117 INFO L226 Difference]: Without dead ends: 5892 [2024-10-24 01:27:02,154 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 01:27:02,155 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 97 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:02,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 427 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:02,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2024-10-24 01:27:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5890. [2024-10-24 01:27:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5890 states, 5889 states have (on average 1.641365257259297) internal successors, (9666), 5889 states have internal predecessors, (9666), 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 01:27:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 9666 transitions. [2024-10-24 01:27:02,281 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 9666 transitions. Word has length 71 [2024-10-24 01:27:02,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:02,281 INFO L471 AbstractCegarLoop]: Abstraction has 5890 states and 9666 transitions. [2024-10-24 01:27:02,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 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 01:27:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 9666 transitions. [2024-10-24 01:27:02,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 01:27:02,282 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:02,282 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, 1] [2024-10-24 01:27:02,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:27:02,282 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:02,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:02,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1555031638, now seen corresponding path program 1 times [2024-10-24 01:27:02,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:02,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538089365] [2024-10-24 01:27:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:02,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:02,341 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 01:27:02,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:02,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538089365] [2024-10-24 01:27:02,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538089365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:02,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:02,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592250863] [2024-10-24 01:27:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:02,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:02,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:02,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:02,343 INFO L87 Difference]: Start difference. First operand 5890 states and 9666 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 01:27:02,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:02,581 INFO L93 Difference]: Finished difference Result 18560 states and 30532 transitions. [2024-10-24 01:27:02,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:02,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 72 [2024-10-24 01:27:02,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:02,624 INFO L225 Difference]: With dead ends: 18560 [2024-10-24 01:27:02,625 INFO L226 Difference]: Without dead ends: 12746 [2024-10-24 01:27:02,631 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 01:27:02,631 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 324 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:02,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 604 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12746 states. [2024-10-24 01:27:02,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12746 to 9275. [2024-10-24 01:27:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9275 states, 9274 states have (on average 1.6293940047444468) internal successors, (15111), 9274 states have internal predecessors, (15111), 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 01:27:02,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 15111 transitions. [2024-10-24 01:27:02,837 INFO L78 Accepts]: Start accepts. Automaton has 9275 states and 15111 transitions. Word has length 72 [2024-10-24 01:27:02,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:02,837 INFO L471 AbstractCegarLoop]: Abstraction has 9275 states and 15111 transitions. [2024-10-24 01:27:02,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 01:27:02,838 INFO L276 IsEmpty]: Start isEmpty. Operand 9275 states and 15111 transitions. [2024-10-24 01:27:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:27:02,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:02,838 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, 1, 1, 1] [2024-10-24 01:27:02,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:27:02,839 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:02,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:02,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1739531394, now seen corresponding path program 1 times [2024-10-24 01:27:02,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:02,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529923806] [2024-10-24 01:27:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:02,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:03,034 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 01:27:03,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:03,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529923806] [2024-10-24 01:27:03,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529923806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:03,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:03,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:03,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491327527] [2024-10-24 01:27:03,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:03,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:03,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:03,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:03,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:03,036 INFO L87 Difference]: Start difference. First operand 9275 states and 15111 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 01:27:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:03,202 INFO L93 Difference]: Finished difference Result 18476 states and 30121 transitions. [2024-10-24 01:27:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:03,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2024-10-24 01:27:03,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:03,222 INFO L225 Difference]: With dead ends: 18476 [2024-10-24 01:27:03,222 INFO L226 Difference]: Without dead ends: 9277 [2024-10-24 01:27:03,233 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 01:27:03,234 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 169 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:03,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 498 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:03,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9277 states. [2024-10-24 01:27:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9277 to 9275. [2024-10-24 01:27:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9275 states, 9274 states have (on average 1.615915462583567) internal successors, (14986), 9274 states have internal predecessors, (14986), 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 01:27:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 14986 transitions. [2024-10-24 01:27:03,443 INFO L78 Accepts]: Start accepts. Automaton has 9275 states and 14986 transitions. Word has length 74 [2024-10-24 01:27:03,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:03,444 INFO L471 AbstractCegarLoop]: Abstraction has 9275 states and 14986 transitions. [2024-10-24 01:27:03,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 01:27:03,444 INFO L276 IsEmpty]: Start isEmpty. Operand 9275 states and 14986 transitions. [2024-10-24 01:27:03,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:27:03,444 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:03,445 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, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:03,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:27:03,445 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:03,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash -770026797, now seen corresponding path program 1 times [2024-10-24 01:27:03,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:03,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395844659] [2024-10-24 01:27:03,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:03,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:03,633 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 01:27:03,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:03,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395844659] [2024-10-24 01:27:03,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395844659] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:03,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:03,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:03,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096043846] [2024-10-24 01:27:03,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:03,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:03,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:03,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:03,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:03,636 INFO L87 Difference]: Start difference. First operand 9275 states and 14986 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 01:27:03,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:03,902 INFO L93 Difference]: Finished difference Result 26568 states and 43073 transitions. [2024-10-24 01:27:03,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:03,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 77 [2024-10-24 01:27:03,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:03,934 INFO L225 Difference]: With dead ends: 26568 [2024-10-24 01:27:03,934 INFO L226 Difference]: Without dead ends: 17369 [2024-10-24 01:27:03,950 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 01:27:03,950 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 247 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:03,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 503 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17369 states. [2024-10-24 01:27:04,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17369 to 17367. [2024-10-24 01:27:04,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17367 states, 17366 states have (on average 1.6007716227110447) internal successors, (27799), 17366 states have internal predecessors, (27799), 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 01:27:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17367 states to 17367 states and 27799 transitions. [2024-10-24 01:27:04,356 INFO L78 Accepts]: Start accepts. Automaton has 17367 states and 27799 transitions. Word has length 77 [2024-10-24 01:27:04,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:04,357 INFO L471 AbstractCegarLoop]: Abstraction has 17367 states and 27799 transitions. [2024-10-24 01:27:04,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 01:27:04,357 INFO L276 IsEmpty]: Start isEmpty. Operand 17367 states and 27799 transitions. [2024-10-24 01:27:04,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 01:27:04,358 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:04,358 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:04,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:27:04,358 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:04,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:04,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1884453877, now seen corresponding path program 1 times [2024-10-24 01:27:04,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:04,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575239731] [2024-10-24 01:27:04,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:04,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:04,491 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 01:27:04,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:04,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575239731] [2024-10-24 01:27:04,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575239731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:04,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:04,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:04,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146784611] [2024-10-24 01:27:04,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:04,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:04,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:04,493 INFO L87 Difference]: Start difference. First operand 17367 states and 27799 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 01:27:04,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:04,639 INFO L93 Difference]: Finished difference Result 18093 states and 28886 transitions. [2024-10-24 01:27:04,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:04,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 78 [2024-10-24 01:27:04,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:04,670 INFO L225 Difference]: With dead ends: 18093 [2024-10-24 01:27:04,670 INFO L226 Difference]: Without dead ends: 18091 [2024-10-24 01:27:04,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:04,682 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:04,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 545 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:04,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18091 states. [2024-10-24 01:27:05,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18091 to 18091. [2024-10-24 01:27:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18091 states, 18090 states have (on average 1.5762299613045883) internal successors, (28514), 18090 states have internal predecessors, (28514), 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 01:27:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18091 states to 18091 states and 28514 transitions. [2024-10-24 01:27:05,080 INFO L78 Accepts]: Start accepts. Automaton has 18091 states and 28514 transitions. Word has length 78 [2024-10-24 01:27:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:05,081 INFO L471 AbstractCegarLoop]: Abstraction has 18091 states and 28514 transitions. [2024-10-24 01:27:05,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 01:27:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 18091 states and 28514 transitions. [2024-10-24 01:27:05,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-24 01:27:05,082 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:05,082 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:05,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:27:05,083 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:05,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:05,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1055535180, now seen corresponding path program 1 times [2024-10-24 01:27:05,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:05,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558529093] [2024-10-24 01:27:05,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:05,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 01:27:05,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:05,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558529093] [2024-10-24 01:27:05,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558529093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:05,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:05,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:05,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352274047] [2024-10-24 01:27:05,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:05,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:05,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:05,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:05,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:05,247 INFO L87 Difference]: Start difference. First operand 18091 states and 28514 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 01:27:05,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:05,637 INFO L93 Difference]: Finished difference Result 44397 states and 70178 transitions. [2024-10-24 01:27:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:05,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 103 [2024-10-24 01:27:05,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:05,710 INFO L225 Difference]: With dead ends: 44397 [2024-10-24 01:27:05,711 INFO L226 Difference]: Without dead ends: 35785 [2024-10-24 01:27:05,726 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 01:27:05,726 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 411 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:05,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 789 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:27:05,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35785 states. [2024-10-24 01:27:06,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35785 to 27861. [2024-10-24 01:27:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27861 states, 27860 states have (on average 1.5737975592246949) internal successors, (43846), 27860 states have internal predecessors, (43846), 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 01:27:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27861 states to 27861 states and 43846 transitions. [2024-10-24 01:27:06,491 INFO L78 Accepts]: Start accepts. Automaton has 27861 states and 43846 transitions. Word has length 103 [2024-10-24 01:27:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:06,492 INFO L471 AbstractCegarLoop]: Abstraction has 27861 states and 43846 transitions. [2024-10-24 01:27:06,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 01:27:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 27861 states and 43846 transitions. [2024-10-24 01:27:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-24 01:27:06,493 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:06,493 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:06,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:27:06,494 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:06,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:06,494 INFO L85 PathProgramCache]: Analyzing trace with hash -328806828, now seen corresponding path program 1 times [2024-10-24 01:27:06,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:06,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899281731] [2024-10-24 01:27:06,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:06,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 01:27:06,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:06,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899281731] [2024-10-24 01:27:06,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899281731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:06,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:06,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:06,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669227186] [2024-10-24 01:27:06,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:06,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:06,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:06,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:06,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:06,611 INFO L87 Difference]: Start difference. First operand 27861 states and 43846 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 01:27:07,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:07,033 INFO L93 Difference]: Finished difference Result 47873 states and 75670 transitions. [2024-10-24 01:27:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:07,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 103 [2024-10-24 01:27:07,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:07,116 INFO L225 Difference]: With dead ends: 47873 [2024-10-24 01:27:07,117 INFO L226 Difference]: Without dead ends: 39261 [2024-10-24 01:27:07,140 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 01:27:07,140 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 419 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:07,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 776 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:27:07,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39261 states. [2024-10-24 01:27:07,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39261 to 37815. [2024-10-24 01:27:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37815 states, 37814 states have (on average 1.5738615327656424) internal successors, (59514), 37814 states have internal predecessors, (59514), 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 01:27:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37815 states to 37815 states and 59514 transitions. [2024-10-24 01:27:07,973 INFO L78 Accepts]: Start accepts. Automaton has 37815 states and 59514 transitions. Word has length 103 [2024-10-24 01:27:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:07,973 INFO L471 AbstractCegarLoop]: Abstraction has 37815 states and 59514 transitions. [2024-10-24 01:27:07,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 01:27:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 37815 states and 59514 transitions. [2024-10-24 01:27:07,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-24 01:27:07,975 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:07,976 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:07,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:27:07,976 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:07,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash -753514220, now seen corresponding path program 1 times [2024-10-24 01:27:07,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:07,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815179282] [2024-10-24 01:27:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:07,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:27:08,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:08,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815179282] [2024-10-24 01:27:08,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815179282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:08,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:08,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528125793] [2024-10-24 01:27:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:08,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:08,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:08,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:08,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:08,113 INFO L87 Difference]: Start difference. First operand 37815 states and 59514 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 01:27:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:08,733 INFO L93 Difference]: Finished difference Result 53799 states and 85194 transitions. [2024-10-24 01:27:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:08,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 103 [2024-10-24 01:27:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:08,803 INFO L225 Difference]: With dead ends: 53799 [2024-10-24 01:27:08,804 INFO L226 Difference]: Without dead ends: 44957 [2024-10-24 01:27:08,815 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 01:27:08,816 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 416 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:08,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 801 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:27:08,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44957 states. [2024-10-24 01:27:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44957 to 43511. [2024-10-24 01:27:09,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43511 states, 43510 states have (on average 1.5766030797517812) internal successors, (68598), 43510 states have internal predecessors, (68598), 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 01:27:09,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43511 states to 43511 states and 68598 transitions. [2024-10-24 01:27:09,540 INFO L78 Accepts]: Start accepts. Automaton has 43511 states and 68598 transitions. Word has length 103 [2024-10-24 01:27:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:09,540 INFO L471 AbstractCegarLoop]: Abstraction has 43511 states and 68598 transitions. [2024-10-24 01:27:09,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 01:27:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 43511 states and 68598 transitions. [2024-10-24 01:27:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 01:27:09,542 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:09,542 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:09,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:27:09,542 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:09,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1946825370, now seen corresponding path program 1 times [2024-10-24 01:27:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:09,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193367856] [2024-10-24 01:27:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:09,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:27:09,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:09,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193367856] [2024-10-24 01:27:09,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193367856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:09,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:09,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:09,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457973937] [2024-10-24 01:27:09,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:09,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:09,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:09,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:09,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:09,793 INFO L87 Difference]: Start difference. First operand 43511 states and 68598 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 01:27:10,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:10,420 INFO L93 Difference]: Finished difference Result 71154 states and 112827 transitions. [2024-10-24 01:27:10,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:10,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 104 [2024-10-24 01:27:10,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:10,497 INFO L225 Difference]: With dead ends: 71154 [2024-10-24 01:27:10,498 INFO L226 Difference]: Without dead ends: 56616 [2024-10-24 01:27:10,515 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 01:27:10,516 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 170 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:10,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 629 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56616 states. [2024-10-24 01:27:11,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56616 to 55172. [2024-10-24 01:27:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55172 states, 55171 states have (on average 1.5766979028837613) internal successors, (86988), 55171 states have internal predecessors, (86988), 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 01:27:11,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55172 states to 55172 states and 86988 transitions. [2024-10-24 01:27:11,510 INFO L78 Accepts]: Start accepts. Automaton has 55172 states and 86988 transitions. Word has length 104 [2024-10-24 01:27:11,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:11,510 INFO L471 AbstractCegarLoop]: Abstraction has 55172 states and 86988 transitions. [2024-10-24 01:27:11,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 01:27:11,511 INFO L276 IsEmpty]: Start isEmpty. Operand 55172 states and 86988 transitions. [2024-10-24 01:27:11,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 01:27:11,512 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:11,512 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:11,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:27:11,513 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:11,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:11,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1530493476, now seen corresponding path program 1 times [2024-10-24 01:27:11,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:11,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680560931] [2024-10-24 01:27:11,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:11,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:11,572 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:27:11,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:11,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680560931] [2024-10-24 01:27:11,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680560931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:11,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:11,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:11,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213903046] [2024-10-24 01:27:11,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:11,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:11,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:11,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:11,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:11,575 INFO L87 Difference]: Start difference. First operand 55172 states and 86988 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 01:27:12,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:12,720 INFO L93 Difference]: Finished difference Result 119538 states and 189154 transitions. [2024-10-24 01:27:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:12,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 104 [2024-10-24 01:27:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:12,859 INFO L225 Difference]: With dead ends: 119538 [2024-10-24 01:27:12,859 INFO L226 Difference]: Without dead ends: 93444 [2024-10-24 01:27:12,881 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 01:27:12,882 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 74 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:12,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 342 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:12,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93444 states. [2024-10-24 01:27:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93444 to 93166. [2024-10-24 01:27:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93166 states, 93165 states have (on average 1.576182042612569) internal successors, (146845), 93165 states have internal predecessors, (146845), 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 01:27:14,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93166 states to 93166 states and 146845 transitions. [2024-10-24 01:27:14,613 INFO L78 Accepts]: Start accepts. Automaton has 93166 states and 146845 transitions. Word has length 104 [2024-10-24 01:27:14,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:14,613 INFO L471 AbstractCegarLoop]: Abstraction has 93166 states and 146845 transitions. [2024-10-24 01:27:14,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 01:27:14,614 INFO L276 IsEmpty]: Start isEmpty. Operand 93166 states and 146845 transitions. [2024-10-24 01:27:14,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-24 01:27:14,616 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:14,616 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:14,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 01:27:14,617 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:14,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:14,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1627232106, now seen corresponding path program 1 times [2024-10-24 01:27:14,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:14,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343715465] [2024-10-24 01:27:14,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:14,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:27:14,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:14,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343715465] [2024-10-24 01:27:14,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343715465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:14,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:14,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:14,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907399830] [2024-10-24 01:27:14,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:14,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:14,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:14,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:14,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:14,740 INFO L87 Difference]: Start difference. First operand 93166 states and 146845 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 01:27:15,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:15,927 INFO L93 Difference]: Finished difference Result 181012 states and 285671 transitions. [2024-10-24 01:27:15,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:15,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2024-10-24 01:27:15,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:16,056 INFO L225 Difference]: With dead ends: 181012 [2024-10-24 01:27:16,056 INFO L226 Difference]: Without dead ends: 87922 [2024-10-24 01:27:16,108 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 01:27:16,109 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 74 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:16,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 402 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87922 states. [2024-10-24 01:27:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87922 to 87915. [2024-10-24 01:27:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87915 states, 87914 states have (on average 1.5689082512455355) internal successors, (137929), 87914 states have internal predecessors, (137929), 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 01:27:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87915 states to 87915 states and 137929 transitions. [2024-10-24 01:27:17,633 INFO L78 Accepts]: Start accepts. Automaton has 87915 states and 137929 transitions. Word has length 105 [2024-10-24 01:27:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:17,633 INFO L471 AbstractCegarLoop]: Abstraction has 87915 states and 137929 transitions. [2024-10-24 01:27:17,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 01:27:17,634 INFO L276 IsEmpty]: Start isEmpty. Operand 87915 states and 137929 transitions. [2024-10-24 01:27:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-24 01:27:17,635 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:17,635 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:17,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 01:27:17,635 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:17,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:17,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1572123986, now seen corresponding path program 1 times [2024-10-24 01:27:17,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:17,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15027812] [2024-10-24 01:27:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:17,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:27:17,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:17,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15027812] [2024-10-24 01:27:17,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15027812] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:17,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:17,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:17,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803841877] [2024-10-24 01:27:17,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:17,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:17,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:17,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:17,945 INFO L87 Difference]: Start difference. First operand 87915 states and 137929 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 01:27:19,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:19,944 INFO L93 Difference]: Finished difference Result 261522 states and 409395 transitions. [2024-10-24 01:27:19,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:19,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2024-10-24 01:27:19,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:20,247 INFO L225 Difference]: With dead ends: 261522 [2024-10-24 01:27:20,247 INFO L226 Difference]: Without dead ends: 173685 [2024-10-24 01:27:20,293 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 01:27:20,294 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 143 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:20,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 448 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:20,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173685 states. [2024-10-24 01:27:23,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173685 to 173683. [2024-10-24 01:27:23,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173683 states, 173682 states have (on average 1.5513236835135478) internal successors, (269437), 173682 states have internal predecessors, (269437), 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 01:27:23,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173683 states to 173683 states and 269437 transitions. [2024-10-24 01:27:23,822 INFO L78 Accepts]: Start accepts. Automaton has 173683 states and 269437 transitions. Word has length 105 [2024-10-24 01:27:23,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:23,823 INFO L471 AbstractCegarLoop]: Abstraction has 173683 states and 269437 transitions. [2024-10-24 01:27:23,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 01:27:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 173683 states and 269437 transitions. [2024-10-24 01:27:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-24 01:27:23,827 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:23,827 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:23,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 01:27:23,827 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:23,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:23,828 INFO L85 PathProgramCache]: Analyzing trace with hash 125373270, now seen corresponding path program 1 times [2024-10-24 01:27:23,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:23,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206322136] [2024-10-24 01:27:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:23,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:27:23,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:23,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206322136] [2024-10-24 01:27:23,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206322136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:23,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:23,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:23,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447675654] [2024-10-24 01:27:23,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:23,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:23,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:23,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:23,956 INFO L87 Difference]: Start difference. First operand 173683 states and 269437 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 01:27:25,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:25,773 INFO L93 Difference]: Finished difference Result 247991 states and 385051 transitions. [2024-10-24 01:27:25,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:25,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2024-10-24 01:27:25,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:25,912 INFO L225 Difference]: With dead ends: 247991 [2024-10-24 01:27:25,912 INFO L226 Difference]: Without dead ends: 74481 [2024-10-24 01:27:25,981 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 01:27:25,982 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 58 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:25,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 371 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 01:27:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74481 states. [2024-10-24 01:27:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74481 to 74231. [2024-10-24 01:27:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74231 states, 74230 states have (on average 1.5439714401185505) internal successors, (114609), 74230 states have internal predecessors, (114609), 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 01:27:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74231 states to 74231 states and 114609 transitions. [2024-10-24 01:27:27,622 INFO L78 Accepts]: Start accepts. Automaton has 74231 states and 114609 transitions. Word has length 105 [2024-10-24 01:27:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:27,622 INFO L471 AbstractCegarLoop]: Abstraction has 74231 states and 114609 transitions. [2024-10-24 01:27:27,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 01:27:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 74231 states and 114609 transitions. [2024-10-24 01:27:27,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-24 01:27:27,625 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:27,625 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:27,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 01:27:27,626 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:27,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:27,626 INFO L85 PathProgramCache]: Analyzing trace with hash 852101622, now seen corresponding path program 1 times [2024-10-24 01:27:27,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:27,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135106001] [2024-10-24 01:27:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:27,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:27:27,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:27,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135106001] [2024-10-24 01:27:27,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135106001] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:27,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:27,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:27,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744100199] [2024-10-24 01:27:27,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:27,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:27,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:27,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:27,735 INFO L87 Difference]: Start difference. First operand 74231 states and 114609 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 01:27:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:28,478 INFO L93 Difference]: Finished difference Result 105611 states and 163167 transitions. [2024-10-24 01:27:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2024-10-24 01:27:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:28,531 INFO L225 Difference]: With dead ends: 105611 [2024-10-24 01:27:28,531 INFO L226 Difference]: Without dead ends: 31553 [2024-10-24 01:27:28,574 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 01:27:28,574 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 45 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:28,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 346 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:28,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31553 states. [2024-10-24 01:27:28,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31553 to 31495. [2024-10-24 01:27:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31495 states, 31494 states have (on average 1.5350542960563918) internal successors, (48345), 31494 states have internal predecessors, (48345), 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 01:27:29,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31495 states to 31495 states and 48345 transitions. [2024-10-24 01:27:29,021 INFO L78 Accepts]: Start accepts. Automaton has 31495 states and 48345 transitions. Word has length 105 [2024-10-24 01:27:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:29,022 INFO L471 AbstractCegarLoop]: Abstraction has 31495 states and 48345 transitions. [2024-10-24 01:27:29,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 01:27:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 31495 states and 48345 transitions. [2024-10-24 01:27:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-24 01:27:29,024 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:29,024 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:29,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 01:27:29,024 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:29,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:29,024 INFO L85 PathProgramCache]: Analyzing trace with hash 110503649, now seen corresponding path program 1 times [2024-10-24 01:27:29,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:29,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136678639] [2024-10-24 01:27:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:29,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:27:29,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:29,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136678639] [2024-10-24 01:27:29,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136678639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:29,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:29,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:29,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891390125] [2024-10-24 01:27:29,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:29,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:29,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:29,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:29,529 INFO L87 Difference]: Start difference. First operand 31495 states and 48345 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 01:27:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:30,149 INFO L93 Difference]: Finished difference Result 77673 states and 118990 transitions. [2024-10-24 01:27:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:30,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 106 [2024-10-24 01:27:30,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:30,247 INFO L225 Difference]: With dead ends: 77673 [2024-10-24 01:27:30,248 INFO L226 Difference]: Without dead ends: 57899 [2024-10-24 01:27:30,280 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 01:27:30,281 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 281 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:30,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 537 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:30,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57899 states. [2024-10-24 01:27:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57899 to 49447. [2024-10-24 01:27:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49447 states, 49446 states have (on average 1.5331270476883874) internal successors, (75807), 49446 states have internal predecessors, (75807), 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 01:27:31,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49447 states to 49447 states and 75807 transitions. [2024-10-24 01:27:31,200 INFO L78 Accepts]: Start accepts. Automaton has 49447 states and 75807 transitions. Word has length 106 [2024-10-24 01:27:31,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:31,201 INFO L471 AbstractCegarLoop]: Abstraction has 49447 states and 75807 transitions. [2024-10-24 01:27:31,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 01:27:31,201 INFO L276 IsEmpty]: Start isEmpty. Operand 49447 states and 75807 transitions. [2024-10-24 01:27:31,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-24 01:27:31,202 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:31,203 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:31,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 01:27:31,203 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:31,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash -722071908, now seen corresponding path program 1 times [2024-10-24 01:27:31,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:31,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71012213] [2024-10-24 01:27:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:31,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:27:31,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:31,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71012213] [2024-10-24 01:27:31,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71012213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:31,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:31,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:31,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863371230] [2024-10-24 01:27:31,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:31,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:31,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:31,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:31,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:31,608 INFO L87 Difference]: Start difference. First operand 49447 states and 75807 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 01:27:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:32,731 INFO L93 Difference]: Finished difference Result 121155 states and 185568 transitions. [2024-10-24 01:27:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:32,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 106 [2024-10-24 01:27:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:32,870 INFO L225 Difference]: With dead ends: 121155 [2024-10-24 01:27:32,870 INFO L226 Difference]: Without dead ends: 91505 [2024-10-24 01:27:32,898 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 01:27:32,898 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 292 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:32,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 529 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91505 states. [2024-10-24 01:27:34,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91505 to 77875. [2024-10-24 01:27:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77875 states, 77874 states have (on average 1.5323599660990832) internal successors, (119331), 77874 states have internal predecessors, (119331), 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 01:27:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77875 states to 77875 states and 119331 transitions. [2024-10-24 01:27:34,511 INFO L78 Accepts]: Start accepts. Automaton has 77875 states and 119331 transitions. Word has length 106 [2024-10-24 01:27:34,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:34,511 INFO L471 AbstractCegarLoop]: Abstraction has 77875 states and 119331 transitions. [2024-10-24 01:27:34,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 01:27:34,512 INFO L276 IsEmpty]: Start isEmpty. Operand 77875 states and 119331 transitions. [2024-10-24 01:27:34,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 01:27:34,512 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:34,512 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:34,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 01:27:34,513 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:34,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:34,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1418907211, now seen corresponding path program 1 times [2024-10-24 01:27:34,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:34,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813229116] [2024-10-24 01:27:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:34,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 01:27:34,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:34,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813229116] [2024-10-24 01:27:34,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813229116] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:34,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:34,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:34,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384839439] [2024-10-24 01:27:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:34,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:34,571 INFO L87 Difference]: Start difference. First operand 77875 states and 119331 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 01:27:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:36,372 INFO L93 Difference]: Finished difference Result 231567 states and 353997 transitions. [2024-10-24 01:27:36,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:36,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2024-10-24 01:27:36,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:36,633 INFO L225 Difference]: With dead ends: 231567 [2024-10-24 01:27:36,633 INFO L226 Difference]: Without dead ends: 153820 [2024-10-24 01:27:36,671 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 01:27:36,672 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 124 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:36,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 431 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:36,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153820 states. [2024-10-24 01:27:39,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153820 to 153818. [2024-10-24 01:27:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153818 states, 153817 states have (on average 1.514592015186878) internal successors, (232970), 153817 states have internal predecessors, (232970), 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 01:27:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153818 states to 153818 states and 232970 transitions. [2024-10-24 01:27:39,848 INFO L78 Accepts]: Start accepts. Automaton has 153818 states and 232970 transitions. Word has length 107 [2024-10-24 01:27:39,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:39,849 INFO L471 AbstractCegarLoop]: Abstraction has 153818 states and 232970 transitions. [2024-10-24 01:27:39,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 01:27:39,849 INFO L276 IsEmpty]: Start isEmpty. Operand 153818 states and 232970 transitions. [2024-10-24 01:27:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-24 01:27:39,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:39,850 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:39,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 01:27:39,851 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:39,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:39,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1842163267, now seen corresponding path program 1 times [2024-10-24 01:27:39,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:39,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026634392] [2024-10-24 01:27:39,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:39,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:27:39,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:39,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026634392] [2024-10-24 01:27:39,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026634392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:39,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:39,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:39,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177881421] [2024-10-24 01:27:39,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:39,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:39,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:39,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:39,925 INFO L87 Difference]: Start difference. First operand 153818 states and 232970 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 01:27:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:41,984 INFO L93 Difference]: Finished difference Result 236944 states and 360077 transitions. [2024-10-24 01:27:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 108 [2024-10-24 01:27:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:42,262 INFO L225 Difference]: With dead ends: 236944 [2024-10-24 01:27:42,262 INFO L226 Difference]: Without dead ends: 170078 [2024-10-24 01:27:42,330 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 01:27:42,331 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 166 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:42,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 643 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:27:42,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170078 states.