./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.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.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 368647bf8c8fe53592ceb4314bbebffd0b8c087a8115d4714b27d4e56ab0a9cf --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 01:27:13,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 01:27:13,994 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 01:27:14,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 01:27:14,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 01:27:14,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 01:27:14,020 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 01:27:14,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 01:27:14,021 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 01:27:14,022 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 01:27:14,023 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 01:27:14,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 01:27:14,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 01:27:14,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 01:27:14,025 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 01:27:14,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 01:27:14,026 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 01:27:14,026 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 01:27:14,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 01:27:14,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 01:27:14,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 01:27:14,029 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 01:27:14,029 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 01:27:14,029 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 01:27:14,029 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 01:27:14,030 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 01:27:14,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 01:27:14,030 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 01:27:14,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 01:27:14,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 01:27:14,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 01:27:14,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 01:27:14,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:27:14,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 01:27:14,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 01:27:14,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 01:27:14,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 01:27:14,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 01:27:14,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 01:27:14,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 01:27:14,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 01:27:14,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 01:27:14,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 368647bf8c8fe53592ceb4314bbebffd0b8c087a8115d4714b27d4e56ab0a9cf [2024-10-24 01:27:14,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 01:27:14,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 01:27:14,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 01:27:14,271 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 01:27:14,272 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 01:27:14,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c [2024-10-24 01:27:15,702 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 01:27:15,877 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 01:27:15,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c [2024-10-24 01:27:15,895 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dca5dd4b/ec8d601c3d174deba2847f82ea7a1fa8/FLAGab501436a [2024-10-24 01:27:15,912 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dca5dd4b/ec8d601c3d174deba2847f82ea7a1fa8 [2024-10-24 01:27:15,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 01:27:15,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 01:27:15,918 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 01:27:15,919 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 01:27:15,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 01:27:15,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:27:15" (1/1) ... [2024-10-24 01:27:15,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245baf2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:15, skipping insertion in model container [2024-10-24 01:27:15,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:27:15" (1/1) ... [2024-10-24 01:27:15,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 01:27:16,239 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.ufo.BOUNDED-6.pals.c[14371,14384] [2024-10-24 01:27:16,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:27:16,251 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 01:27:16,290 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.ufo.BOUNDED-6.pals.c[14371,14384] [2024-10-24 01:27:16,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 01:27:16,310 INFO L204 MainTranslator]: Completed translation [2024-10-24 01:27:16,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16 WrapperNode [2024-10-24 01:27:16,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 01:27:16,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 01:27:16,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 01:27:16,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 01:27:16,317 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,332 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,371 INFO L138 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 496 [2024-10-24 01:27:16,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 01:27:16,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 01:27:16,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 01:27:16,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 01:27:16,387 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,396 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,409 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 01:27:16,410 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,421 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,422 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,424 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 01:27:16,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 01:27:16,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 01:27:16,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 01:27:16,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (1/1) ... [2024-10-24 01:27:16,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 01:27:16,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 01:27:16,468 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 01:27:16,478 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 01:27:16,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 01:27:16,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 01:27:16,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 01:27:16,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 01:27:16,603 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 01:27:16,605 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 01:27:17,061 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-10-24 01:27:17,061 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 01:27:17,123 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 01:27:17,124 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 01:27:17,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:27:17 BoogieIcfgContainer [2024-10-24 01:27:17,124 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 01:27:17,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 01:27:17,128 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 01:27:17,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 01:27:17,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:27:15" (1/3) ... [2024-10-24 01:27:17,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bab6abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:27:17, skipping insertion in model container [2024-10-24 01:27:17,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:27:16" (2/3) ... [2024-10-24 01:27:17,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bab6abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:27:17, skipping insertion in model container [2024-10-24 01:27:17,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:27:17" (3/3) ... [2024-10-24 01:27:17,137 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c [2024-10-24 01:27:17,150 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 01:27:17,151 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 01:27:17,198 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 01:27:17,204 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;@703e39b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 01:27:17,205 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 01:27:17,209 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 01:27:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 01:27:17,215 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:17,215 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 01:27:17,216 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:17,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:17,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1384301439, now seen corresponding path program 1 times [2024-10-24 01:27:17,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:17,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183117541] [2024-10-24 01:27:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:17,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:17,523 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 01:27:17,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:17,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183117541] [2024-10-24 01:27:17,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183117541] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:17,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:17,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 01:27:17,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136820949] [2024-10-24 01:27:17,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:17,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 01:27:17,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:17,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 01:27:17,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 01:27:17,559 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 01:27:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:17,602 INFO L93 Difference]: Finished difference Result 195 states and 344 transitions. [2024-10-24 01:27:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 01:27:17,604 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 01:27:17,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:17,612 INFO L225 Difference]: With dead ends: 195 [2024-10-24 01:27:17,613 INFO L226 Difference]: Without dead ends: 124 [2024-10-24 01:27:17,615 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 01:27:17,618 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 01:27:17,620 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 01:27:17,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-10-24 01:27:17,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-10-24 01:27:17,650 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 01:27:17,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 220 transitions. [2024-10-24 01:27:17,654 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 220 transitions. Word has length 34 [2024-10-24 01:27:17,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:17,654 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 220 transitions. [2024-10-24 01:27:17,655 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 01:27:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 220 transitions. [2024-10-24 01:27:17,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-24 01:27:17,656 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:17,656 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 01:27:17,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 01:27:17,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:17,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1221722115, now seen corresponding path program 1 times [2024-10-24 01:27:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:17,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636436198] [2024-10-24 01:27:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:17,907 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 01:27:17,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:17,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636436198] [2024-10-24 01:27:17,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636436198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:17,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:17,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:17,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416514205] [2024-10-24 01:27:17,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:17,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:17,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:17,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:17,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:17,911 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 01:27:17,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:17,988 INFO L93 Difference]: Finished difference Result 193 states and 337 transitions. [2024-10-24 01:27:17,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:17,992 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 01:27:17,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:17,993 INFO L225 Difference]: With dead ends: 193 [2024-10-24 01:27:17,993 INFO L226 Difference]: Without dead ends: 124 [2024-10-24 01:27:17,993 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 01:27:17,994 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 01:27:17,994 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 01:27:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-10-24 01:27:18,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-10-24 01:27:18,007 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 01:27:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 190 transitions. [2024-10-24 01:27:18,009 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 190 transitions. Word has length 34 [2024-10-24 01:27:18,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:18,010 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 190 transitions. [2024-10-24 01:27:18,010 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 01:27:18,010 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 190 transitions. [2024-10-24 01:27:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 01:27:18,012 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:18,012 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 01:27:18,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 01:27:18,013 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:18,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash 480220631, now seen corresponding path program 1 times [2024-10-24 01:27:18,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:18,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513549582] [2024-10-24 01:27:18,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:18,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:18,146 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 01:27:18,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:18,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513549582] [2024-10-24 01:27:18,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513549582] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:18,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:18,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:18,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526930390] [2024-10-24 01:27:18,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:18,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:18,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:18,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:18,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:18,151 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 01:27:18,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:18,202 INFO L93 Difference]: Finished difference Result 246 states and 400 transitions. [2024-10-24 01:27:18,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:18,203 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 01:27:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:18,204 INFO L225 Difference]: With dead ends: 246 [2024-10-24 01:27:18,206 INFO L226 Difference]: Without dead ends: 180 [2024-10-24 01:27:18,207 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 01:27:18,207 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, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:18,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 330 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:18,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-10-24 01:27:18,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2024-10-24 01:27:18,224 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 01:27:18,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 280 transitions. [2024-10-24 01:27:18,225 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 280 transitions. Word has length 63 [2024-10-24 01:27:18,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:18,225 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 280 transitions. [2024-10-24 01:27:18,225 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 01:27:18,225 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 280 transitions. [2024-10-24 01:27:18,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 01:27:18,227 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:18,227 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 01:27:18,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 01:27:18,227 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:18,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1065677961, now seen corresponding path program 1 times [2024-10-24 01:27:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:18,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615414166] [2024-10-24 01:27:18,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:18,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:18,316 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 01:27:18,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:18,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615414166] [2024-10-24 01:27:18,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615414166] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:18,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:18,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:18,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492353939] [2024-10-24 01:27:18,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:18,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:18,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:18,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:18,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:18,320 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 01:27:18,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:18,343 INFO L93 Difference]: Finished difference Result 402 states and 660 transitions. [2024-10-24 01:27:18,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:18,343 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 01:27:18,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:18,345 INFO L225 Difference]: With dead ends: 402 [2024-10-24 01:27:18,347 INFO L226 Difference]: Without dead ends: 282 [2024-10-24 01:27:18,347 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 01:27:18,370 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 01:27:18,372 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 01:27:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-10-24 01:27:18,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2024-10-24 01:27:18,392 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 01:27:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 453 transitions. [2024-10-24 01:27:18,393 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 453 transitions. Word has length 65 [2024-10-24 01:27:18,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:18,394 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 453 transitions. [2024-10-24 01:27:18,395 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 01:27:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 453 transitions. [2024-10-24 01:27:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 01:27:18,399 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:18,399 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 01:27:18,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 01:27:18,400 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:18,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:18,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1472684379, now seen corresponding path program 1 times [2024-10-24 01:27:18,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:18,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986149780] [2024-10-24 01:27:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:18,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:18,512 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 01:27:18,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:18,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986149780] [2024-10-24 01:27:18,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986149780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:18,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:18,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:18,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130328898] [2024-10-24 01:27:18,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:18,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:18,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:18,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:18,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:18,515 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 01:27:18,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:18,538 INFO L93 Difference]: Finished difference Result 692 states and 1151 transitions. [2024-10-24 01:27:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:18,539 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 01:27:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:18,541 INFO L225 Difference]: With dead ends: 692 [2024-10-24 01:27:18,541 INFO L226 Difference]: Without dead ends: 470 [2024-10-24 01:27:18,542 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 01:27:18,543 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 01:27:18,543 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 01:27:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2024-10-24 01:27:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 468. [2024-10-24 01:27:18,557 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 01:27:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 769 transitions. [2024-10-24 01:27:18,558 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 769 transitions. Word has length 67 [2024-10-24 01:27:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:18,559 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 769 transitions. [2024-10-24 01:27:18,559 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 01:27:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 769 transitions. [2024-10-24 01:27:18,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 01:27:18,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:18,560 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 01:27:18,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 01:27:18,560 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:18,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1702765645, now seen corresponding path program 1 times [2024-10-24 01:27:18,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:18,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227966950] [2024-10-24 01:27:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:18,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:18,763 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 01:27:18,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:18,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227966950] [2024-10-24 01:27:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227966950] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:18,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969973203] [2024-10-24 01:27:18,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:18,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:18,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:18,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:18,771 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 01:27:18,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:18,937 INFO L93 Difference]: Finished difference Result 1980 states and 3359 transitions. [2024-10-24 01:27:18,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 01:27:18,938 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 01:27:18,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:18,945 INFO L225 Difference]: With dead ends: 1980 [2024-10-24 01:27:18,946 INFO L226 Difference]: Without dead ends: 1570 [2024-10-24 01:27:18,947 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 01:27:18,948 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 01:27:18,949 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 01:27:18,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2024-10-24 01:27:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 826. [2024-10-24 01:27:18,980 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 01:27:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1374 transitions. [2024-10-24 01:27:18,985 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1374 transitions. Word has length 69 [2024-10-24 01:27:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:18,985 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 1374 transitions. [2024-10-24 01:27:18,986 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 01:27:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1374 transitions. [2024-10-24 01:27:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-24 01:27:18,988 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:18,988 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 01:27:18,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 01:27:18,988 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:18,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1183406413, now seen corresponding path program 1 times [2024-10-24 01:27:18,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:18,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583648790] [2024-10-24 01:27:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:19,103 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 01:27:19,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:19,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583648790] [2024-10-24 01:27:19,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583648790] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:19,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:19,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:19,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315887458] [2024-10-24 01:27:19,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:19,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:19,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:19,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:19,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:19,107 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 01:27:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:19,187 INFO L93 Difference]: Finished difference Result 2398 states and 4060 transitions. [2024-10-24 01:27:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:19,187 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 01:27:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:19,192 INFO L225 Difference]: With dead ends: 2398 [2024-10-24 01:27:19,192 INFO L226 Difference]: Without dead ends: 1630 [2024-10-24 01:27:19,194 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 01:27:19,195 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, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:19,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 605 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:27:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2024-10-24 01:27:19,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1219. [2024-10-24 01:27:19,220 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 01:27:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 2039 transitions. [2024-10-24 01:27:19,222 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 2039 transitions. Word has length 70 [2024-10-24 01:27:19,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:19,223 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 2039 transitions. [2024-10-24 01:27:19,223 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 01:27:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 2039 transitions. [2024-10-24 01:27:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 01:27:19,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:19,224 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 01:27:19,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 01:27:19,224 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:19,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1621689265, now seen corresponding path program 1 times [2024-10-24 01:27:19,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:19,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094453102] [2024-10-24 01:27:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:19,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:19,313 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 01:27:19,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:19,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094453102] [2024-10-24 01:27:19,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094453102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:19,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:19,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:19,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863423154] [2024-10-24 01:27:19,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:19,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:19,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:19,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:19,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:19,317 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 01:27:19,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:19,354 INFO L93 Difference]: Finished difference Result 2417 states and 4058 transitions. [2024-10-24 01:27:19,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:19,355 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 01:27:19,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:19,361 INFO L225 Difference]: With dead ends: 2417 [2024-10-24 01:27:19,362 INFO L226 Difference]: Without dead ends: 1747 [2024-10-24 01:27:19,363 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 01:27:19,364 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 01:27:19,364 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 01:27:19,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2024-10-24 01:27:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1745. [2024-10-24 01:27:19,400 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 01:27:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2902 transitions. [2024-10-24 01:27:19,404 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2902 transitions. Word has length 71 [2024-10-24 01:27:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:19,405 INFO L471 AbstractCegarLoop]: Abstraction has 1745 states and 2902 transitions. [2024-10-24 01:27:19,405 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 01:27:19,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2902 transitions. [2024-10-24 01:27:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 01:27:19,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:19,407 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 01:27:19,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 01:27:19,408 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:19,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:19,409 INFO L85 PathProgramCache]: Analyzing trace with hash -894960913, now seen corresponding path program 1 times [2024-10-24 01:27:19,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:19,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792134107] [2024-10-24 01:27:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:19,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:19,466 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 01:27:19,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:19,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792134107] [2024-10-24 01:27:19,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792134107] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:19,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:19,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:19,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897724384] [2024-10-24 01:27:19,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:19,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:19,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:19,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:19,469 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 01:27:19,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:19,510 INFO L93 Difference]: Finished difference Result 3413 states and 5698 transitions. [2024-10-24 01:27:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:19,511 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 01:27:19,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:19,518 INFO L225 Difference]: With dead ends: 3413 [2024-10-24 01:27:19,519 INFO L226 Difference]: Without dead ends: 2469 [2024-10-24 01:27:19,520 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 01:27:19,521 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 01:27:19,521 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 01:27:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2024-10-24 01:27:19,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2467. [2024-10-24 01:27:19,564 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 01:27:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4078 transitions. [2024-10-24 01:27:19,573 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4078 transitions. Word has length 71 [2024-10-24 01:27:19,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:19,573 INFO L471 AbstractCegarLoop]: Abstraction has 2467 states and 4078 transitions. [2024-10-24 01:27:19,573 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 01:27:19,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4078 transitions. [2024-10-24 01:27:19,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 01:27:19,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:19,575 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 01:27:19,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 01:27:19,575 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:19,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2026376138, now seen corresponding path program 1 times [2024-10-24 01:27:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:19,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903008840] [2024-10-24 01:27:19,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:19,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:19,684 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 01:27:19,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:19,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903008840] [2024-10-24 01:27:19,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903008840] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:19,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:19,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:19,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133952022] [2024-10-24 01:27:19,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:19,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:19,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:19,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:19,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:19,686 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 01:27:19,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:19,791 INFO L93 Difference]: Finished difference Result 7754 states and 12893 transitions. [2024-10-24 01:27:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:19,791 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 01:27:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:19,808 INFO L225 Difference]: With dead ends: 7754 [2024-10-24 01:27:19,808 INFO L226 Difference]: Without dead ends: 5403 [2024-10-24 01:27:19,814 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 01:27:19,815 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, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:19,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 602 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:19,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2024-10-24 01:27:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 3917. [2024-10-24 01:27:19,899 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 01:27:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3917 states to 3917 states and 6446 transitions. [2024-10-24 01:27:19,909 INFO L78 Accepts]: Start accepts. Automaton has 3917 states and 6446 transitions. Word has length 71 [2024-10-24 01:27:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:19,909 INFO L471 AbstractCegarLoop]: Abstraction has 3917 states and 6446 transitions. [2024-10-24 01:27:19,909 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 01:27:19,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3917 states and 6446 transitions. [2024-10-24 01:27:19,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 01:27:19,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:19,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:19,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 01:27:19,910 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:19,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1319668305, now seen corresponding path program 1 times [2024-10-24 01:27:19,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:19,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48798036] [2024-10-24 01:27:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:19,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:19,956 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 01:27:19,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:19,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48798036] [2024-10-24 01:27:19,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48798036] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:19,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:19,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:19,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64812718] [2024-10-24 01:27:19,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:19,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:19,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:19,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:19,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:19,958 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 01:27:20,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:20,071 INFO L93 Difference]: Finished difference Result 8718 states and 14491 transitions. [2024-10-24 01:27:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:20,072 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 01:27:20,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:20,086 INFO L225 Difference]: With dead ends: 8718 [2024-10-24 01:27:20,087 INFO L226 Difference]: Without dead ends: 5892 [2024-10-24 01:27:20,089 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 01:27:20,090 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 01:27:20,090 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 01:27:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5892 states. [2024-10-24 01:27:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5892 to 5890. [2024-10-24 01:27:20,182 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 01:27:20,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 9666 transitions. [2024-10-24 01:27:20,197 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 9666 transitions. Word has length 71 [2024-10-24 01:27:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:20,197 INFO L471 AbstractCegarLoop]: Abstraction has 5890 states and 9666 transitions. [2024-10-24 01:27:20,197 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 01:27:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 9666 transitions. [2024-10-24 01:27:20,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-24 01:27:20,198 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:20,198 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 01:27:20,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 01:27:20,198 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:20,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:20,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1555031638, now seen corresponding path program 1 times [2024-10-24 01:27:20,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:20,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018103199] [2024-10-24 01:27:20,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:20,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:20,264 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 01:27:20,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:20,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018103199] [2024-10-24 01:27:20,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018103199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:20,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:20,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:20,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896479095] [2024-10-24 01:27:20,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:20,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:20,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:20,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:20,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:20,266 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 01:27:20,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:20,490 INFO L93 Difference]: Finished difference Result 18560 states and 30532 transitions. [2024-10-24 01:27:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:20,491 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 01:27:20,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:20,520 INFO L225 Difference]: With dead ends: 18560 [2024-10-24 01:27:20,520 INFO L226 Difference]: Without dead ends: 12746 [2024-10-24 01:27:20,529 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 01:27:20,530 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 01:27:20,530 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 01:27:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12746 states. [2024-10-24 01:27:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12746 to 9275. [2024-10-24 01:27:20,750 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 01:27:20,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 15111 transitions. [2024-10-24 01:27:20,766 INFO L78 Accepts]: Start accepts. Automaton has 9275 states and 15111 transitions. Word has length 72 [2024-10-24 01:27:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:20,766 INFO L471 AbstractCegarLoop]: Abstraction has 9275 states and 15111 transitions. [2024-10-24 01:27:20,766 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 01:27:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 9275 states and 15111 transitions. [2024-10-24 01:27:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-24 01:27:20,767 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:20,767 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 01:27:20,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 01:27:20,767 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:20,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:20,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1739531394, now seen corresponding path program 1 times [2024-10-24 01:27:20,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:20,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084821335] [2024-10-24 01:27:20,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:20,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:20,906 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 01:27:20,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:20,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084821335] [2024-10-24 01:27:20,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084821335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:20,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:20,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:20,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344233366] [2024-10-24 01:27:20,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:20,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:20,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:20,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:20,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:20,908 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 01:27:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:21,085 INFO L93 Difference]: Finished difference Result 18476 states and 30121 transitions. [2024-10-24 01:27:21,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:21,086 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 01:27:21,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:21,100 INFO L225 Difference]: With dead ends: 18476 [2024-10-24 01:27:21,100 INFO L226 Difference]: Without dead ends: 9277 [2024-10-24 01:27:21,110 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 01:27:21,111 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 01:27:21,111 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 01:27:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9277 states. [2024-10-24 01:27:21,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9277 to 9275. [2024-10-24 01:27:21,252 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 01:27:21,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9275 states to 9275 states and 14986 transitions. [2024-10-24 01:27:21,268 INFO L78 Accepts]: Start accepts. Automaton has 9275 states and 14986 transitions. Word has length 74 [2024-10-24 01:27:21,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:21,268 INFO L471 AbstractCegarLoop]: Abstraction has 9275 states and 14986 transitions. [2024-10-24 01:27:21,269 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 01:27:21,269 INFO L276 IsEmpty]: Start isEmpty. Operand 9275 states and 14986 transitions. [2024-10-24 01:27:21,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-24 01:27:21,269 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:21,270 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 01:27:21,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 01:27:21,270 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:21,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:21,270 INFO L85 PathProgramCache]: Analyzing trace with hash -770026797, now seen corresponding path program 1 times [2024-10-24 01:27:21,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:21,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54591749] [2024-10-24 01:27:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:21,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:21,464 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 01:27:21,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:21,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54591749] [2024-10-24 01:27:21,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54591749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:21,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:21,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:21,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371644778] [2024-10-24 01:27:21,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:21,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:21,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:21,466 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 01:27:21,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:21,671 INFO L93 Difference]: Finished difference Result 26568 states and 43073 transitions. [2024-10-24 01:27:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:21,672 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 01:27:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:21,704 INFO L225 Difference]: With dead ends: 26568 [2024-10-24 01:27:21,704 INFO L226 Difference]: Without dead ends: 17369 [2024-10-24 01:27:21,720 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 01:27:21,721 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 01:27:21,721 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 01:27:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17369 states. [2024-10-24 01:27:22,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17369 to 17367. [2024-10-24 01:27:22,070 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 01:27:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17367 states to 17367 states and 27799 transitions. [2024-10-24 01:27:22,101 INFO L78 Accepts]: Start accepts. Automaton has 17367 states and 27799 transitions. Word has length 77 [2024-10-24 01:27:22,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:22,101 INFO L471 AbstractCegarLoop]: Abstraction has 17367 states and 27799 transitions. [2024-10-24 01:27:22,102 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 01:27:22,102 INFO L276 IsEmpty]: Start isEmpty. Operand 17367 states and 27799 transitions. [2024-10-24 01:27:22,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-24 01:27:22,103 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:22,103 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 01:27:22,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 01:27:22,104 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:22,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1884453877, now seen corresponding path program 1 times [2024-10-24 01:27:22,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:22,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642829559] [2024-10-24 01:27:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:22,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:22,255 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 01:27:22,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:22,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642829559] [2024-10-24 01:27:22,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642829559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:22,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:22,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:22,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014093768] [2024-10-24 01:27:22,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:22,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:22,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:22,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:22,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:22,257 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 01:27:22,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:22,533 INFO L93 Difference]: Finished difference Result 18093 states and 28886 transitions. [2024-10-24 01:27:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:22,534 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 01:27:22,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:22,567 INFO L225 Difference]: With dead ends: 18093 [2024-10-24 01:27:22,568 INFO L226 Difference]: Without dead ends: 18091 [2024-10-24 01:27:22,574 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 01:27:22,575 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 01:27:22,576 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 01:27:22,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18091 states. [2024-10-24 01:27:22,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18091 to 18091. [2024-10-24 01:27:22,989 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 01:27:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18091 states to 18091 states and 28514 transitions. [2024-10-24 01:27:23,018 INFO L78 Accepts]: Start accepts. Automaton has 18091 states and 28514 transitions. Word has length 78 [2024-10-24 01:27:23,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:23,019 INFO L471 AbstractCegarLoop]: Abstraction has 18091 states and 28514 transitions. [2024-10-24 01:27:23,019 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 01:27:23,019 INFO L276 IsEmpty]: Start isEmpty. Operand 18091 states and 28514 transitions. [2024-10-24 01:27:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-24 01:27:23,063 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:23,063 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 01:27:23,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 01:27:23,063 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:23,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:23,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1055535180, now seen corresponding path program 1 times [2024-10-24 01:27:23,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:23,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564319206] [2024-10-24 01:27:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:23,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:23,190 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 01:27:23,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:23,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564319206] [2024-10-24 01:27:23,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564319206] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:23,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:23,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:23,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937185006] [2024-10-24 01:27:23,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:23,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:23,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:23,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:23,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:23,193 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 01:27:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:23,703 INFO L93 Difference]: Finished difference Result 44397 states and 70178 transitions. [2024-10-24 01:27:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:23,703 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 01:27:23,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:23,787 INFO L225 Difference]: With dead ends: 44397 [2024-10-24 01:27:23,787 INFO L226 Difference]: Without dead ends: 35785 [2024-10-24 01:27:23,804 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 01:27:23,804 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 01:27:23,806 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 01:27:23,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35785 states. [2024-10-24 01:27:24,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35785 to 27861. [2024-10-24 01:27:24,369 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 01:27:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27861 states to 27861 states and 43846 transitions. [2024-10-24 01:27:24,420 INFO L78 Accepts]: Start accepts. Automaton has 27861 states and 43846 transitions. Word has length 103 [2024-10-24 01:27:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:24,420 INFO L471 AbstractCegarLoop]: Abstraction has 27861 states and 43846 transitions. [2024-10-24 01:27:24,421 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 01:27:24,421 INFO L276 IsEmpty]: Start isEmpty. Operand 27861 states and 43846 transitions. [2024-10-24 01:27:24,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-24 01:27:24,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:24,422 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 01:27:24,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 01:27:24,423 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:24,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:24,423 INFO L85 PathProgramCache]: Analyzing trace with hash -328806828, now seen corresponding path program 1 times [2024-10-24 01:27:24,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:24,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369904484] [2024-10-24 01:27:24,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:24,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:24,691 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 01:27:24,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:24,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369904484] [2024-10-24 01:27:24,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369904484] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:24,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:24,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:24,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109491526] [2024-10-24 01:27:24,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:24,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:24,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:24,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:24,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:24,694 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 01:27:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:25,180 INFO L93 Difference]: Finished difference Result 47873 states and 75670 transitions. [2024-10-24 01:27:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:25,180 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 01:27:25,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:25,255 INFO L225 Difference]: With dead ends: 47873 [2024-10-24 01:27:25,255 INFO L226 Difference]: Without dead ends: 39261 [2024-10-24 01:27:25,269 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 01:27:25,269 INFO L432 NwaCegarLoop]: 286 mSDtfsCounter, 419 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 01:27:25,270 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 01:27:25,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39261 states. [2024-10-24 01:27:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39261 to 37815. [2024-10-24 01:27:26,100 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 01:27:26,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37815 states to 37815 states and 59514 transitions. [2024-10-24 01:27:26,175 INFO L78 Accepts]: Start accepts. Automaton has 37815 states and 59514 transitions. Word has length 103 [2024-10-24 01:27:26,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:26,175 INFO L471 AbstractCegarLoop]: Abstraction has 37815 states and 59514 transitions. [2024-10-24 01:27:26,175 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 01:27:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 37815 states and 59514 transitions. [2024-10-24 01:27:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-24 01:27:26,178 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:26,178 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 01:27:26,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 01:27:26,179 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:26,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:26,179 INFO L85 PathProgramCache]: Analyzing trace with hash -753514220, now seen corresponding path program 1 times [2024-10-24 01:27:26,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:26,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974780981] [2024-10-24 01:27:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:26,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:26,413 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 01:27:26,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:26,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974780981] [2024-10-24 01:27:26,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974780981] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:26,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:26,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 01:27:26,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038157999] [2024-10-24 01:27:26,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:26,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 01:27:26,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:26,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 01:27:26,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 01:27:26,415 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 01:27:26,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:26,754 INFO L93 Difference]: Finished difference Result 53799 states and 85194 transitions. [2024-10-24 01:27:26,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:26,755 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 01:27:26,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:26,848 INFO L225 Difference]: With dead ends: 53799 [2024-10-24 01:27:26,849 INFO L226 Difference]: Without dead ends: 44957 [2024-10-24 01:27:26,871 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 01:27:26,872 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 01:27:26,872 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 01:27:26,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44957 states. [2024-10-24 01:27:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44957 to 43511. [2024-10-24 01:27:27,654 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 01:27:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43511 states to 43511 states and 68598 transitions. [2024-10-24 01:27:27,720 INFO L78 Accepts]: Start accepts. Automaton has 43511 states and 68598 transitions. Word has length 103 [2024-10-24 01:27:27,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:27,721 INFO L471 AbstractCegarLoop]: Abstraction has 43511 states and 68598 transitions. [2024-10-24 01:27:27,721 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 01:27:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 43511 states and 68598 transitions. [2024-10-24 01:27:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 01:27:27,723 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:27,723 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 01:27:27,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 01:27:27,723 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:27,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1946825370, now seen corresponding path program 1 times [2024-10-24 01:27:27,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:27,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222503718] [2024-10-24 01:27:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:27,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:27,817 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 01:27:27,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:27,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222503718] [2024-10-24 01:27:27,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222503718] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:27,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:27,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921346484] [2024-10-24 01:27:27,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:27,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:27,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:27,819 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 01:27:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:28,591 INFO L93 Difference]: Finished difference Result 71154 states and 112827 transitions. [2024-10-24 01:27:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:28,592 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 01:27:28,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:28,685 INFO L225 Difference]: With dead ends: 71154 [2024-10-24 01:27:28,685 INFO L226 Difference]: Without dead ends: 56616 [2024-10-24 01:27:28,712 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 01:27:28,713 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, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:28,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 629 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:27:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56616 states. [2024-10-24 01:27:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56616 to 55172. [2024-10-24 01:27:29,636 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 01:27:29,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55172 states to 55172 states and 86988 transitions. [2024-10-24 01:27:29,722 INFO L78 Accepts]: Start accepts. Automaton has 55172 states and 86988 transitions. Word has length 104 [2024-10-24 01:27:29,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:29,723 INFO L471 AbstractCegarLoop]: Abstraction has 55172 states and 86988 transitions. [2024-10-24 01:27:29,723 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 01:27:29,723 INFO L276 IsEmpty]: Start isEmpty. Operand 55172 states and 86988 transitions. [2024-10-24 01:27:29,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 01:27:29,725 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:29,725 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 01:27:29,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 01:27:29,725 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:29,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:29,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1530493476, now seen corresponding path program 1 times [2024-10-24 01:27:29,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:29,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805511543] [2024-10-24 01:27:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:29,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:29,981 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 01:27:29,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:29,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805511543] [2024-10-24 01:27:29,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805511543] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:29,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:29,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:29,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768945379] [2024-10-24 01:27:29,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:29,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:29,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:29,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:29,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:29,982 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 01:27:30,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:30,718 INFO L93 Difference]: Finished difference Result 119538 states and 189154 transitions. [2024-10-24 01:27:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:30,718 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 01:27:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:30,858 INFO L225 Difference]: With dead ends: 119538 [2024-10-24 01:27:30,858 INFO L226 Difference]: Without dead ends: 93444 [2024-10-24 01:27:30,891 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 01:27:30,892 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 01:27:30,892 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 01:27:30,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93444 states. [2024-10-24 01:27:32,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93444 to 93166. [2024-10-24 01:27:32,696 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 01:27:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93166 states to 93166 states and 146845 transitions. [2024-10-24 01:27:32,829 INFO L78 Accepts]: Start accepts. Automaton has 93166 states and 146845 transitions. Word has length 104 [2024-10-24 01:27:32,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:32,833 INFO L471 AbstractCegarLoop]: Abstraction has 93166 states and 146845 transitions. [2024-10-24 01:27:32,833 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 01:27:32,834 INFO L276 IsEmpty]: Start isEmpty. Operand 93166 states and 146845 transitions. [2024-10-24 01:27:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-24 01:27:32,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:32,836 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 01:27:32,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 01:27:32,836 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:32,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1627232106, now seen corresponding path program 1 times [2024-10-24 01:27:32,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:32,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094541951] [2024-10-24 01:27:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:32,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:32,924 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 01:27:32,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:32,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094541951] [2024-10-24 01:27:32,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094541951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:32,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:32,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:32,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068075957] [2024-10-24 01:27:32,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:32,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:32,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:32,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:32,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:32,927 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 01:27:34,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:34,047 INFO L93 Difference]: Finished difference Result 181012 states and 285671 transitions. [2024-10-24 01:27:34,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:34,048 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 01:27:34,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:34,215 INFO L225 Difference]: With dead ends: 181012 [2024-10-24 01:27:34,215 INFO L226 Difference]: Without dead ends: 87922 [2024-10-24 01:27:34,293 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 01:27:34,294 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 01:27:34,295 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 01:27:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87922 states. [2024-10-24 01:27:35,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87922 to 87915. [2024-10-24 01:27:35,971 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 01:27:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87915 states to 87915 states and 137929 transitions. [2024-10-24 01:27:36,133 INFO L78 Accepts]: Start accepts. Automaton has 87915 states and 137929 transitions. Word has length 105 [2024-10-24 01:27:36,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:36,134 INFO L471 AbstractCegarLoop]: Abstraction has 87915 states and 137929 transitions. [2024-10-24 01:27:36,134 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 01:27:36,134 INFO L276 IsEmpty]: Start isEmpty. Operand 87915 states and 137929 transitions. [2024-10-24 01:27:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-24 01:27:36,140 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:36,140 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 01:27:36,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 01:27:36,140 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:36,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1572123986, now seen corresponding path program 1 times [2024-10-24 01:27:36,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:36,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126855243] [2024-10-24 01:27:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:36,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:36,203 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 01:27:36,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:36,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126855243] [2024-10-24 01:27:36,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126855243] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:36,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:36,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:36,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131322367] [2024-10-24 01:27:36,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:36,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:36,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:36,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:36,205 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 01:27:38,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:38,168 INFO L93 Difference]: Finished difference Result 261522 states and 409395 transitions. [2024-10-24 01:27:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:38,169 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 01:27:38,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:38,479 INFO L225 Difference]: With dead ends: 261522 [2024-10-24 01:27:38,479 INFO L226 Difference]: Without dead ends: 173685 [2024-10-24 01:27:38,540 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 01:27:38,541 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 01:27:38,541 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 01:27:38,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173685 states. [2024-10-24 01:27:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173685 to 173683. [2024-10-24 01:27:42,012 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 01:27:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173683 states to 173683 states and 269437 transitions. [2024-10-24 01:27:42,451 INFO L78 Accepts]: Start accepts. Automaton has 173683 states and 269437 transitions. Word has length 105 [2024-10-24 01:27:42,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:42,451 INFO L471 AbstractCegarLoop]: Abstraction has 173683 states and 269437 transitions. [2024-10-24 01:27:42,451 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 01:27:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 173683 states and 269437 transitions. [2024-10-24 01:27:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-24 01:27:42,454 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:42,454 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 01:27:42,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 01:27:42,454 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:42,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:42,455 INFO L85 PathProgramCache]: Analyzing trace with hash 125373270, now seen corresponding path program 1 times [2024-10-24 01:27:42,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:42,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084357491] [2024-10-24 01:27:42,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:42,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:42,535 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 01:27:42,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:42,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084357491] [2024-10-24 01:27:42,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084357491] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:42,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:42,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:42,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955902386] [2024-10-24 01:27:42,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:42,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:42,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:42,536 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 01:27:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:43,885 INFO L93 Difference]: Finished difference Result 247991 states and 385051 transitions. [2024-10-24 01:27:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:43,885 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 01:27:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:44,501 INFO L225 Difference]: With dead ends: 247991 [2024-10-24 01:27:44,501 INFO L226 Difference]: Without dead ends: 74481 [2024-10-24 01:27:44,624 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 01:27:44,626 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, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:44,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 371 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:44,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74481 states. [2024-10-24 01:27:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74481 to 74231. [2024-10-24 01:27:46,023 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 01:27:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74231 states to 74231 states and 114609 transitions. [2024-10-24 01:27:46,168 INFO L78 Accepts]: Start accepts. Automaton has 74231 states and 114609 transitions. Word has length 105 [2024-10-24 01:27:46,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:46,169 INFO L471 AbstractCegarLoop]: Abstraction has 74231 states and 114609 transitions. [2024-10-24 01:27:46,169 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 01:27:46,170 INFO L276 IsEmpty]: Start isEmpty. Operand 74231 states and 114609 transitions. [2024-10-24 01:27:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-10-24 01:27:46,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:46,172 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 01:27:46,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 01:27:46,172 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:46,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash 852101622, now seen corresponding path program 1 times [2024-10-24 01:27:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:46,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582161203] [2024-10-24 01:27:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:46,309 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 01:27:46,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:46,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582161203] [2024-10-24 01:27:46,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582161203] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:46,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:46,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:46,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251854488] [2024-10-24 01:27:46,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:46,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:46,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:46,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:46,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:46,314 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 01:27:46,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:46,745 INFO L93 Difference]: Finished difference Result 105611 states and 163167 transitions. [2024-10-24 01:27:46,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:46,746 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 01:27:46,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:47,133 INFO L225 Difference]: With dead ends: 105611 [2024-10-24 01:27:47,137 INFO L226 Difference]: Without dead ends: 31553 [2024-10-24 01:27:47,189 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 01:27:47,190 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 01:27:47,192 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 01:27:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31553 states. [2024-10-24 01:27:47,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31553 to 31495. [2024-10-24 01:27:47,588 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 01:27:47,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31495 states to 31495 states and 48345 transitions. [2024-10-24 01:27:47,635 INFO L78 Accepts]: Start accepts. Automaton has 31495 states and 48345 transitions. Word has length 105 [2024-10-24 01:27:47,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:47,635 INFO L471 AbstractCegarLoop]: Abstraction has 31495 states and 48345 transitions. [2024-10-24 01:27:47,636 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 01:27:47,636 INFO L276 IsEmpty]: Start isEmpty. Operand 31495 states and 48345 transitions. [2024-10-24 01:27:47,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-24 01:27:47,638 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:47,638 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 01:27:47,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 01:27:47,638 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:47,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:47,638 INFO L85 PathProgramCache]: Analyzing trace with hash 110503649, now seen corresponding path program 1 times [2024-10-24 01:27:47,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:47,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408539560] [2024-10-24 01:27:47,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:47,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:47,832 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 01:27:47,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:47,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408539560] [2024-10-24 01:27:47,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408539560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:47,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:47,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:47,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283122134] [2024-10-24 01:27:47,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:47,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:47,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:47,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:47,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:47,834 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 01:27:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:48,662 INFO L93 Difference]: Finished difference Result 77673 states and 118990 transitions. [2024-10-24 01:27:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:48,662 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 01:27:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:48,747 INFO L225 Difference]: With dead ends: 77673 [2024-10-24 01:27:48,747 INFO L226 Difference]: Without dead ends: 57899 [2024-10-24 01:27:48,771 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 01:27:48,772 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 01:27:48,772 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 01:27:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57899 states. [2024-10-24 01:27:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57899 to 49447. [2024-10-24 01:27:49,640 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 01:27:49,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49447 states to 49447 states and 75807 transitions. [2024-10-24 01:27:49,708 INFO L78 Accepts]: Start accepts. Automaton has 49447 states and 75807 transitions. Word has length 106 [2024-10-24 01:27:49,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:49,708 INFO L471 AbstractCegarLoop]: Abstraction has 49447 states and 75807 transitions. [2024-10-24 01:27:49,709 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 01:27:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 49447 states and 75807 transitions. [2024-10-24 01:27:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-10-24 01:27:49,710 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:49,710 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 01:27:49,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 01:27:49,710 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:49,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash -722071908, now seen corresponding path program 1 times [2024-10-24 01:27:49,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:49,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631249322] [2024-10-24 01:27:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:49,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 01:27:49,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:49,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631249322] [2024-10-24 01:27:49,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631249322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:49,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:49,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:49,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281989649] [2024-10-24 01:27:49,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:49,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:49,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:49,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:49,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:49,942 INFO L87 Difference]: Start difference. First operand 49447 states and 75807 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 01:27:51,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:51,106 INFO L93 Difference]: Finished difference Result 117026 states and 179653 transitions. [2024-10-24 01:27:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 01:27:51,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 106 [2024-10-24 01:27:51,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:51,231 INFO L225 Difference]: With dead ends: 117026 [2024-10-24 01:27:51,232 INFO L226 Difference]: Without dead ends: 80990 [2024-10-24 01:27:51,269 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 01:27:51,270 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 270 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:51,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 511 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 01:27:51,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80990 states. [2024-10-24 01:27:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80990 to 74143. [2024-10-24 01:27:52,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74143 states, 74142 states have (on average 1.530751800598851) internal successors, (113493), 74142 states have internal predecessors, (113493), 0 states have call successors, (0), 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 01:27:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74143 states to 74143 states and 113493 transitions. [2024-10-24 01:27:52,795 INFO L78 Accepts]: Start accepts. Automaton has 74143 states and 113493 transitions. Word has length 106 [2024-10-24 01:27:52,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:52,795 INFO L471 AbstractCegarLoop]: Abstraction has 74143 states and 113493 transitions. [2024-10-24 01:27:52,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 01:27:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand 74143 states and 113493 transitions. [2024-10-24 01:27:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-24 01:27:52,797 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:52,797 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:52,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-24 01:27:52,797 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:52,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:52,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1228996218, now seen corresponding path program 1 times [2024-10-24 01:27:52,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:52,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468490863] [2024-10-24 01:27:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:52,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:27:52,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:52,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468490863] [2024-10-24 01:27:52,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468490863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:52,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:52,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 01:27:52,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706678058] [2024-10-24 01:27:52,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:52,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 01:27:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:52,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 01:27:52,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 01:27:52,872 INFO L87 Difference]: Start difference. First operand 74143 states and 113493 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 01:27:53,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:53,903 INFO L93 Difference]: Finished difference Result 115591 states and 177704 transitions. [2024-10-24 01:27:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 01:27:53,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 108 [2024-10-24 01:27:53,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:54,051 INFO L225 Difference]: With dead ends: 115591 [2024-10-24 01:27:54,052 INFO L226 Difference]: Without dead ends: 94145 [2024-10-24 01:27:54,082 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 01:27:54,082 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 181 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 01:27:54,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 566 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94145 states. [2024-10-24 01:27:55,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94145 to 85073. [2024-10-24 01:27:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85073 states, 85072 states have (on average 1.5303860259544857) internal successors, (130193), 85072 states have internal predecessors, (130193), 0 states have call successors, (0), 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 01:27:55,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85073 states to 85073 states and 130193 transitions. [2024-10-24 01:27:55,900 INFO L78 Accepts]: Start accepts. Automaton has 85073 states and 130193 transitions. Word has length 108 [2024-10-24 01:27:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:27:55,900 INFO L471 AbstractCegarLoop]: Abstraction has 85073 states and 130193 transitions. [2024-10-24 01:27:55,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 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 01:27:55,900 INFO L276 IsEmpty]: Start isEmpty. Operand 85073 states and 130193 transitions. [2024-10-24 01:27:55,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-24 01:27:55,901 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:27:55,901 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:27:55,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-24 01:27:55,902 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:27:55,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:27:55,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1622023228, now seen corresponding path program 1 times [2024-10-24 01:27:55,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:27:55,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806021556] [2024-10-24 01:27:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:27:55,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:27:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:27:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 01:27:55,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:27:55,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806021556] [2024-10-24 01:27:55,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806021556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:27:55,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:27:55,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:27:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419631057] [2024-10-24 01:27:55,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:27:55,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:27:55,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:27:55,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:27:55,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:27:55,960 INFO L87 Difference]: Start difference. First operand 85073 states and 130193 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 01:27:57,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:27:57,624 INFO L93 Difference]: Finished difference Result 191355 states and 293239 transitions. [2024-10-24 01:27:57,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:27:57,625 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 108 [2024-10-24 01:27:57,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:27:57,853 INFO L225 Difference]: With dead ends: 191355 [2024-10-24 01:27:57,853 INFO L226 Difference]: Without dead ends: 147401 [2024-10-24 01:27:57,889 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 01:27:57,890 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 62 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 358 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 01:27:57,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 358 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:27:57,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147401 states. [2024-10-24 01:28:00,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147401 to 147059. [2024-10-24 01:28:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147059 states, 147058 states have (on average 1.5272817527778155) internal successors, (224599), 147058 states have internal predecessors, (224599), 0 states have call successors, (0), 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 01:28:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147059 states to 147059 states and 224599 transitions. [2024-10-24 01:28:00,845 INFO L78 Accepts]: Start accepts. Automaton has 147059 states and 224599 transitions. Word has length 108 [2024-10-24 01:28:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 01:28:00,848 INFO L471 AbstractCegarLoop]: Abstraction has 147059 states and 224599 transitions. [2024-10-24 01:28:00,848 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 01:28:00,848 INFO L276 IsEmpty]: Start isEmpty. Operand 147059 states and 224599 transitions. [2024-10-24 01:28:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-24 01:28:00,849 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 01:28:00,849 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 01:28:00,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-24 01:28:00,849 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 01:28:00,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 01:28:00,850 INFO L85 PathProgramCache]: Analyzing trace with hash 575826580, now seen corresponding path program 1 times [2024-10-24 01:28:00,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 01:28:00,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38343028] [2024-10-24 01:28:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 01:28:00,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 01:28:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 01:28:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 01:28:00,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 01:28:00,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38343028] [2024-10-24 01:28:00,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38343028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 01:28:00,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 01:28:00,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 01:28:00,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821578039] [2024-10-24 01:28:00,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 01:28:00,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 01:28:00,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 01:28:00,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 01:28:00,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 01:28:00,904 INFO L87 Difference]: Start difference. First operand 147059 states and 224599 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 01:28:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 01:28:04,632 INFO L93 Difference]: Finished difference Result 437901 states and 667333 transitions. [2024-10-24 01:28:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 01:28:04,632 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 109 [2024-10-24 01:28:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 01:28:05,258 INFO L225 Difference]: With dead ends: 437901 [2024-10-24 01:28:05,259 INFO L226 Difference]: Without dead ends: 290958 [2024-10-24 01:28:05,359 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 01:28:05,363 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 114 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 421 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 01:28:05,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 421 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 01:28:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290958 states.