./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 64bit --witnessprinter.graph.data.programhash be53c51dc83e5173157f1fa4471313025cf2f600c0bad4f77c441750f4d9f9e8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 06:12:16,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 06:12:16,287 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-11 06:12:16,293 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 06:12:16,293 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 06:12:16,315 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 06:12:16,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 06:12:16,318 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 06:12:16,319 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 06:12:16,319 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 06:12:16,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 06:12:16,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 06:12:16,321 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 06:12:16,326 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 06:12:16,326 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 06:12:16,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 06:12:16,327 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 06:12:16,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 06:12:16,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 06:12:16,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 06:12:16,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 06:12:16,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 06:12:16,329 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 06:12:16,329 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 06:12:16,330 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 06:12:16,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 06:12:16,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 06:12:16,331 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 06:12:16,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 06:12:16,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:12:16,331 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 06:12:16,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 06:12:16,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 06:12:16,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 06:12:16,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 06:12:16,335 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 06:12:16,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 06:12:16,336 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 06:12:16,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 06:12:16,336 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be53c51dc83e5173157f1fa4471313025cf2f600c0bad4f77c441750f4d9f9e8 [2024-10-11 06:12:16,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 06:12:16,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 06:12:16,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 06:12:16,698 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 06:12:16,699 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 06:12:16,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c [2024-10-11 06:12:18,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 06:12:18,663 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 06:12:18,664 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c [2024-10-11 06:12:18,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a99b228fe/3fb5247139b44f1ba87ba4a9db779c89/FLAG5fedab7a7 [2024-10-11 06:12:19,007 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a99b228fe/3fb5247139b44f1ba87ba4a9db779c89 [2024-10-11 06:12:19,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 06:12:19,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 06:12:19,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 06:12:19,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 06:12:19,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 06:12:19,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7115c8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19, skipping insertion in model container [2024-10-11 06:12:19,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,081 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 06:12:19,268 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/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c[1247,1260] [2024-10-11 06:12:19,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:12:19,463 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 06:12:19,479 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/hardware-verification-bv/btor2c-lazyMod.h_Vlunc.c[1247,1260] [2024-10-11 06:12:19,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 06:12:19,576 INFO L204 MainTranslator]: Completed translation [2024-10-11 06:12:19,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19 WrapperNode [2024-10-11 06:12:19,578 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 06:12:19,580 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 06:12:19,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 06:12:19,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 06:12:19,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,755 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 784 [2024-10-11 06:12:19,756 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 06:12:19,757 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 06:12:19,757 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 06:12:19,757 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 06:12:19,779 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,802 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,862 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]. [2024-10-11 06:12:19,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,906 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,948 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 06:12:19,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 06:12:19,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 06:12:19,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 06:12:19,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (1/1) ... [2024-10-11 06:12:19,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 06:12:19,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:12:19,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 06:12:20,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 06:12:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 06:12:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 06:12:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 06:12:20,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 06:12:20,203 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 06:12:20,206 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 06:12:21,382 INFO L? ?]: Removed 472 outVars from TransFormulas that were not future-live. [2024-10-11 06:12:21,385 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 06:12:21,433 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 06:12:21,435 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 06:12:21,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:12:21 BoogieIcfgContainer [2024-10-11 06:12:21,438 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 06:12:21,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 06:12:21,471 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 06:12:21,475 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 06:12:21,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 06:12:19" (1/3) ... [2024-10-11 06:12:21,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1130e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:12:21, skipping insertion in model container [2024-10-11 06:12:21,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 06:12:19" (2/3) ... [2024-10-11 06:12:21,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1130e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 06:12:21, skipping insertion in model container [2024-10-11 06:12:21,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 06:12:21" (3/3) ... [2024-10-11 06:12:21,479 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_Vlunc.c [2024-10-11 06:12:21,499 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 06:12:21,500 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 06:12:21,589 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 06:12:21,605 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;@6caa316a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 06:12:21,606 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 06:12:21,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 173 states have (on average 1.5028901734104045) internal successors, (260), 174 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:21,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 06:12:21,630 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:21,631 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] [2024-10-11 06:12:21,632 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:21,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:21,639 INFO L85 PathProgramCache]: Analyzing trace with hash 350711268, now seen corresponding path program 1 times [2024-10-11 06:12:21,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:21,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189729999] [2024-10-11 06:12:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:21,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:22,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:22,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:22,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189729999] [2024-10-11 06:12:22,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189729999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:22,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:22,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:22,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394391173] [2024-10-11 06:12:22,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:22,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:12:22,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:22,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:12:22,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:12:22,846 INFO L87 Difference]: Start difference. First operand has 175 states, 173 states have (on average 1.5028901734104045) internal successors, (260), 174 states have internal predecessors, (260), 0 states have call successors, (0), 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 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:22,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:22,944 INFO L93 Difference]: Finished difference Result 326 states and 486 transitions. [2024-10-11 06:12:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:12:22,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-10-11 06:12:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:22,963 INFO L225 Difference]: With dead ends: 326 [2024-10-11 06:12:22,964 INFO L226 Difference]: Without dead ends: 176 [2024-10-11 06:12:22,969 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 [2024-10-11 06:12:22,976 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 0 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:22,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 760 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:23,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-10-11 06:12:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-10-11 06:12:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.4857142857142858) internal successors, (260), 175 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:23,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 260 transitions. [2024-10-11 06:12:23,046 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 260 transitions. Word has length 68 [2024-10-11 06:12:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:23,047 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 260 transitions. [2024-10-11 06:12:23,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:23,047 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 260 transitions. [2024-10-11 06:12:23,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-11 06:12:23,051 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:23,052 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] [2024-10-11 06:12:23,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 06:12:23,053 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:23,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2011157011, now seen corresponding path program 1 times [2024-10-11 06:12:23,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:23,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348586984] [2024-10-11 06:12:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:23,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:23,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348586984] [2024-10-11 06:12:23,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348586984] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:23,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:23,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:12:23,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147447381] [2024-10-11 06:12:23,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:23,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:12:23,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:23,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:12:23,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:23,575 INFO L87 Difference]: Start difference. First operand 176 states and 260 transitions. Second operand has 6 states, 6 states have (on average 11.5) 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) [2024-10-11 06:12:24,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:24,071 INFO L93 Difference]: Finished difference Result 658 states and 973 transitions. [2024-10-11 06:12:24,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:24,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) 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 [2024-10-11 06:12:24,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:24,076 INFO L225 Difference]: With dead ends: 658 [2024-10-11 06:12:24,078 INFO L226 Difference]: Without dead ends: 319 [2024-10-11 06:12:24,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 06:12:24,082 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 1187 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:24,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 879 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:12:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-10-11 06:12:24,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 214. [2024-10-11 06:12:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.483568075117371) internal successors, (316), 213 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 316 transitions. [2024-10-11 06:12:24,108 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 316 transitions. Word has length 69 [2024-10-11 06:12:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:24,108 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 316 transitions. [2024-10-11 06:12:24,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) 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) [2024-10-11 06:12:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 316 transitions. [2024-10-11 06:12:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-11 06:12:24,114 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:24,115 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] [2024-10-11 06:12:24,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 06:12:24,115 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:24,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1931472532, now seen corresponding path program 1 times [2024-10-11 06:12:24,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:24,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524032080] [2024-10-11 06:12:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:24,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:24,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:24,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524032080] [2024-10-11 06:12:24,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524032080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:24,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:24,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:12:24,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4064587] [2024-10-11 06:12:24,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:24,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:12:24,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:24,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:12:24,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:24,479 INFO L87 Difference]: Start difference. First operand 214 states and 316 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:24,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:24,831 INFO L93 Difference]: Finished difference Result 494 states and 728 transitions. [2024-10-11 06:12:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:12:24,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-11 06:12:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:24,835 INFO L225 Difference]: With dead ends: 494 [2024-10-11 06:12:24,838 INFO L226 Difference]: Without dead ends: 343 [2024-10-11 06:12:24,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:12:24,842 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 808 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:24,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 627 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:12:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-10-11 06:12:24,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 246. [2024-10-11 06:12:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.4816326530612245) internal successors, (363), 245 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:24,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 363 transitions. [2024-10-11 06:12:24,865 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 363 transitions. Word has length 70 [2024-10-11 06:12:24,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:24,865 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 363 transitions. [2024-10-11 06:12:24,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:24,866 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 363 transitions. [2024-10-11 06:12:24,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 06:12:24,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:24,868 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] [2024-10-11 06:12:24,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 06:12:24,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:24,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1943778555, now seen corresponding path program 1 times [2024-10-11 06:12:24,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:24,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555251362] [2024-10-11 06:12:24,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:24,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:25,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:25,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555251362] [2024-10-11 06:12:25,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555251362] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:25,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:25,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:12:25,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552818541] [2024-10-11 06:12:25,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:25,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:12:25,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:12:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:25,234 INFO L87 Difference]: Start difference. First operand 246 states and 363 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:25,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:25,694 INFO L93 Difference]: Finished difference Result 494 states and 727 transitions. [2024-10-11 06:12:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:12:25,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-10-11 06:12:25,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:25,696 INFO L225 Difference]: With dead ends: 494 [2024-10-11 06:12:25,697 INFO L226 Difference]: Without dead ends: 343 [2024-10-11 06:12:25,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:12:25,698 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 638 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:25,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 741 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:12:25,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-10-11 06:12:25,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 262. [2024-10-11 06:12:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 1.4789272030651341) internal successors, (386), 261 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:25,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 386 transitions. [2024-10-11 06:12:25,720 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 386 transitions. Word has length 71 [2024-10-11 06:12:25,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:25,721 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 386 transitions. [2024-10-11 06:12:25,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:25,722 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 386 transitions. [2024-10-11 06:12:25,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-10-11 06:12:25,727 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:25,728 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] [2024-10-11 06:12:25,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 06:12:25,728 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:25,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash 850283216, now seen corresponding path program 1 times [2024-10-11 06:12:25,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:25,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561728955] [2024-10-11 06:12:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:25,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:26,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:26,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561728955] [2024-10-11 06:12:26,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561728955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:26,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:26,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:26,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820350455] [2024-10-11 06:12:26,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:26,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 06:12:26,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:26,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 06:12:26,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:12:26,070 INFO L87 Difference]: Start difference. First operand 262 states and 386 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) [2024-10-11 06:12:26,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:26,094 INFO L93 Difference]: Finished difference Result 415 states and 612 transitions. [2024-10-11 06:12:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 06:12:26,095 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 [2024-10-11 06:12:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:26,098 INFO L225 Difference]: With dead ends: 415 [2024-10-11 06:12:26,098 INFO L226 Difference]: Without dead ends: 264 [2024-10-11 06:12:26,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 06:12:26,100 INFO L432 NwaCegarLoop]: 255 mSDtfsCounter, 0 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:26,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 757 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:26,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-10-11 06:12:26,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-10-11 06:12:26,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.4752851711026616) internal successors, (388), 263 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:26,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 388 transitions. [2024-10-11 06:12:26,122 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 388 transitions. Word has length 72 [2024-10-11 06:12:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:26,122 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 388 transitions. [2024-10-11 06:12:26,123 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) [2024-10-11 06:12:26,123 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 388 transitions. [2024-10-11 06:12:26,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-11 06:12:26,128 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:26,128 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] [2024-10-11 06:12:26,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 06:12:26,129 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:26,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash -508989606, now seen corresponding path program 1 times [2024-10-11 06:12:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:26,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22372511] [2024-10-11 06:12:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:26,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:26,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:26,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22372511] [2024-10-11 06:12:26,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22372511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:26,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:26,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:26,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980310613] [2024-10-11 06:12:26,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:26,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:12:26,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:26,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:12:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:26,772 INFO L87 Difference]: Start difference. First operand 264 states and 388 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:26,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:26,818 INFO L93 Difference]: Finished difference Result 422 states and 621 transitions. [2024-10-11 06:12:26,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:12:26,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2024-10-11 06:12:26,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:26,821 INFO L225 Difference]: With dead ends: 422 [2024-10-11 06:12:26,821 INFO L226 Difference]: Without dead ends: 269 [2024-10-11 06:12:26,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:26,823 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 1 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:26,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1243 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-10-11 06:12:26,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-10-11 06:12:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.4701492537313432) internal successors, (394), 268 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 394 transitions. [2024-10-11 06:12:26,838 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 394 transitions. Word has length 73 [2024-10-11 06:12:26,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:26,839 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 394 transitions. [2024-10-11 06:12:26,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:26,842 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 394 transitions. [2024-10-11 06:12:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-11 06:12:26,843 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:26,844 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] [2024-10-11 06:12:26,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 06:12:26,847 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:26,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1984888681, now seen corresponding path program 1 times [2024-10-11 06:12:26,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:26,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233212422] [2024-10-11 06:12:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:26,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:27,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:27,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233212422] [2024-10-11 06:12:27,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233212422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:27,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:27,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:12:27,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581947922] [2024-10-11 06:12:27,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:27,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:27,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:27,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:27,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:27,200 INFO L87 Difference]: Start difference. First operand 269 states and 394 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2024-10-11 06:12:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:27,257 INFO L93 Difference]: Finished difference Result 462 states and 676 transitions. [2024-10-11 06:12:27,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:27,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 [2024-10-11 06:12:27,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:27,259 INFO L225 Difference]: With dead ends: 462 [2024-10-11 06:12:27,259 INFO L226 Difference]: Without dead ends: 297 [2024-10-11 06:12:27,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:27,261 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 12 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:27,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1488 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:27,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-10-11 06:12:27,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2024-10-11 06:12:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.4594594594594594) internal successors, (432), 296 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 432 transitions. [2024-10-11 06:12:27,268 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 432 transitions. Word has length 74 [2024-10-11 06:12:27,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:27,269 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 432 transitions. [2024-10-11 06:12:27,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) [2024-10-11 06:12:27,269 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 432 transitions. [2024-10-11 06:12:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-10-11 06:12:27,270 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:27,270 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] [2024-10-11 06:12:27,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 06:12:27,271 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:27,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1839718562, now seen corresponding path program 1 times [2024-10-11 06:12:27,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:27,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335161569] [2024-10-11 06:12:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:27,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:27,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:27,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335161569] [2024-10-11 06:12:27,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335161569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:27,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:27,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:12:27,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023975480] [2024-10-11 06:12:27,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:27,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:12:27,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:27,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:12:27,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:27,963 INFO L87 Difference]: Start difference. First operand 297 states and 432 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) 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) [2024-10-11 06:12:28,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:28,048 INFO L93 Difference]: Finished difference Result 490 states and 711 transitions. [2024-10-11 06:12:28,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:12:28,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) 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 [2024-10-11 06:12:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:28,050 INFO L225 Difference]: With dead ends: 490 [2024-10-11 06:12:28,050 INFO L226 Difference]: Without dead ends: 313 [2024-10-11 06:12:28,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:12:28,052 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 212 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:28,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 967 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:12:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-10-11 06:12:28,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2024-10-11 06:12:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.4487179487179487) internal successors, (452), 312 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 452 transitions. [2024-10-11 06:12:28,063 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 452 transitions. Word has length 74 [2024-10-11 06:12:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:28,063 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 452 transitions. [2024-10-11 06:12:28,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) 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) [2024-10-11 06:12:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 452 transitions. [2024-10-11 06:12:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-11 06:12:28,066 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:28,066 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] [2024-10-11 06:12:28,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 06:12:28,066 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:28,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1610284602, now seen corresponding path program 1 times [2024-10-11 06:12:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:28,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970022500] [2024-10-11 06:12:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:28,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:28,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:28,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:28,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970022500] [2024-10-11 06:12:28,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970022500] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:28,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:28,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:12:28,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115905975] [2024-10-11 06:12:28,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:28,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:28,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:28,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:28,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:28,477 INFO L87 Difference]: Start difference. First operand 313 states and 452 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:28,535 INFO L93 Difference]: Finished difference Result 576 states and 830 transitions. [2024-10-11 06:12:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:28,536 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2024-10-11 06:12:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:28,540 INFO L225 Difference]: With dead ends: 576 [2024-10-11 06:12:28,540 INFO L226 Difference]: Without dead ends: 351 [2024-10-11 06:12:28,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:28,542 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 12 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:28,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1488 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-10-11 06:12:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2024-10-11 06:12:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.437142857142857) internal successors, (503), 350 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 503 transitions. [2024-10-11 06:12:28,553 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 503 transitions. Word has length 75 [2024-10-11 06:12:28,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:28,553 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 503 transitions. [2024-10-11 06:12:28,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:28,553 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 503 transitions. [2024-10-11 06:12:28,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-11 06:12:28,554 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:28,554 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] [2024-10-11 06:12:28,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 06:12:28,555 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:28,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:28,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1329154758, now seen corresponding path program 1 times [2024-10-11 06:12:28,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:28,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458751284] [2024-10-11 06:12:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:28,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:28,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:28,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458751284] [2024-10-11 06:12:28,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458751284] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:28,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:28,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:28,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893926690] [2024-10-11 06:12:28,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:28,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:28,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:28,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:28,838 INFO L87 Difference]: Start difference. First operand 351 states and 503 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:28,919 INFO L93 Difference]: Finished difference Result 615 states and 877 transitions. [2024-10-11 06:12:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:28,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2024-10-11 06:12:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:28,927 INFO L225 Difference]: With dead ends: 615 [2024-10-11 06:12:28,927 INFO L226 Difference]: Without dead ends: 399 [2024-10-11 06:12:28,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:28,936 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 571 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:28,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 739 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:12:28,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-10-11 06:12:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 343. [2024-10-11 06:12:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.435672514619883) internal successors, (491), 342 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:28,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 491 transitions. [2024-10-11 06:12:28,964 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 491 transitions. Word has length 75 [2024-10-11 06:12:28,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:28,965 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 491 transitions. [2024-10-11 06:12:28,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:28,965 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 491 transitions. [2024-10-11 06:12:28,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-11 06:12:28,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:28,966 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] [2024-10-11 06:12:28,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 06:12:28,967 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:28,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1902407615, now seen corresponding path program 1 times [2024-10-11 06:12:28,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:28,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922239037] [2024-10-11 06:12:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:29,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:29,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922239037] [2024-10-11 06:12:29,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922239037] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:29,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:29,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:29,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762693583] [2024-10-11 06:12:29,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:29,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:29,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:29,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:29,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:29,539 INFO L87 Difference]: Start difference. First operand 343 states and 491 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:29,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:29,656 INFO L93 Difference]: Finished difference Result 589 states and 842 transitions. [2024-10-11 06:12:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:12:29,656 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2024-10-11 06:12:29,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:29,658 INFO L225 Difference]: With dead ends: 589 [2024-10-11 06:12:29,658 INFO L226 Difference]: Without dead ends: 367 [2024-10-11 06:12:29,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:12:29,659 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 221 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:29,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1206 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:12:29,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-10-11 06:12:29,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2024-10-11 06:12:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.4234972677595628) internal successors, (521), 366 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 521 transitions. [2024-10-11 06:12:29,668 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 521 transitions. Word has length 75 [2024-10-11 06:12:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:29,668 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 521 transitions. [2024-10-11 06:12:29,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 521 transitions. [2024-10-11 06:12:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-11 06:12:29,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:29,670 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] [2024-10-11 06:12:29,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 06:12:29,670 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:29,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:29,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1384447177, now seen corresponding path program 1 times [2024-10-11 06:12:29,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:29,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867046204] [2024-10-11 06:12:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:29,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:29,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867046204] [2024-10-11 06:12:29,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867046204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:29,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:29,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:29,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540012219] [2024-10-11 06:12:29,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:29,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:29,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:29,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:29,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:29,920 INFO L87 Difference]: Start difference. First operand 367 states and 521 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:29,990 INFO L93 Difference]: Finished difference Result 648 states and 913 transitions. [2024-10-11 06:12:29,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:29,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-10-11 06:12:29,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:29,994 INFO L225 Difference]: With dead ends: 648 [2024-10-11 06:12:29,994 INFO L226 Difference]: Without dead ends: 389 [2024-10-11 06:12:29,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:29,995 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 536 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:29,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 739 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:29,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-10-11 06:12:30,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 341. [2024-10-11 06:12:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.4205882352941177) internal successors, (483), 340 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 483 transitions. [2024-10-11 06:12:30,006 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 483 transitions. Word has length 76 [2024-10-11 06:12:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:30,006 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 483 transitions. [2024-10-11 06:12:30,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 483 transitions. [2024-10-11 06:12:30,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-11 06:12:30,007 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:30,007 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] [2024-10-11 06:12:30,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 06:12:30,008 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:30,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash 581438519, now seen corresponding path program 1 times [2024-10-11 06:12:30,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:30,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387666493] [2024-10-11 06:12:30,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:30,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:30,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:30,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387666493] [2024-10-11 06:12:30,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387666493] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:30,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:30,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:12:30,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311028323] [2024-10-11 06:12:30,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:30,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:30,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:30,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:30,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:30,338 INFO L87 Difference]: Start difference. First operand 341 states and 483 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:30,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:30,398 INFO L93 Difference]: Finished difference Result 648 states and 917 transitions. [2024-10-11 06:12:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:30,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-10-11 06:12:30,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:30,401 INFO L225 Difference]: With dead ends: 648 [2024-10-11 06:12:30,402 INFO L226 Difference]: Without dead ends: 379 [2024-10-11 06:12:30,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:30,403 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 13 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:30,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1488 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-10-11 06:12:30,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2024-10-11 06:12:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.4153439153439153) internal successors, (535), 378 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 535 transitions. [2024-10-11 06:12:30,415 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 535 transitions. Word has length 76 [2024-10-11 06:12:30,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:30,415 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 535 transitions. [2024-10-11 06:12:30,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:30,416 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 535 transitions. [2024-10-11 06:12:30,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-11 06:12:30,417 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:30,417 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] [2024-10-11 06:12:30,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 06:12:30,417 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:30,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:30,418 INFO L85 PathProgramCache]: Analyzing trace with hash 159056254, now seen corresponding path program 1 times [2024-10-11 06:12:30,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:30,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555633599] [2024-10-11 06:12:30,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:30,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:31,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:31,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555633599] [2024-10-11 06:12:31,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555633599] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:31,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:31,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 06:12:31,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288521272] [2024-10-11 06:12:31,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:31,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 06:12:31,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:31,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 06:12:31,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-11 06:12:31,183 INFO L87 Difference]: Start difference. First operand 379 states and 535 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:31,424 INFO L93 Difference]: Finished difference Result 671 states and 947 transitions. [2024-10-11 06:12:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 06:12:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-10-11 06:12:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:31,426 INFO L225 Difference]: With dead ends: 671 [2024-10-11 06:12:31,427 INFO L226 Difference]: Without dead ends: 403 [2024-10-11 06:12:31,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-10-11 06:12:31,428 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 266 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:31,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 2113 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:12:31,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-10-11 06:12:31,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2024-10-11 06:12:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.4104477611940298) internal successors, (567), 402 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:31,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 567 transitions. [2024-10-11 06:12:31,444 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 567 transitions. Word has length 76 [2024-10-11 06:12:31,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:31,444 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 567 transitions. [2024-10-11 06:12:31,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 567 transitions. [2024-10-11 06:12:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 06:12:31,446 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:31,446 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] [2024-10-11 06:12:31,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 06:12:31,447 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:31,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash -397486292, now seen corresponding path program 1 times [2024-10-11 06:12:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:31,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157857709] [2024-10-11 06:12:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:31,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:31,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:31,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157857709] [2024-10-11 06:12:31,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157857709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:31,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:31,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:31,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695024428] [2024-10-11 06:12:31,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:31,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:31,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:31,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:31,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:31,725 INFO L87 Difference]: Start difference. First operand 403 states and 567 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 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) [2024-10-11 06:12:31,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:31,821 INFO L93 Difference]: Finished difference Result 736 states and 1025 transitions. [2024-10-11 06:12:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:31,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 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 [2024-10-11 06:12:31,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:31,825 INFO L225 Difference]: With dead ends: 736 [2024-10-11 06:12:31,825 INFO L226 Difference]: Without dead ends: 425 [2024-10-11 06:12:31,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:31,826 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 524 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:31,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 739 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:31,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-10-11 06:12:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 377. [2024-10-11 06:12:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.4015957446808511) internal successors, (527), 376 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:31,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 527 transitions. [2024-10-11 06:12:31,839 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 527 transitions. Word has length 77 [2024-10-11 06:12:31,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:31,839 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 527 transitions. [2024-10-11 06:12:31,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 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) [2024-10-11 06:12:31,840 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 527 transitions. [2024-10-11 06:12:31,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 06:12:31,840 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:31,841 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] [2024-10-11 06:12:31,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 06:12:31,841 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:31,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:31,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2043592382, now seen corresponding path program 1 times [2024-10-11 06:12:31,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:31,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006661902] [2024-10-11 06:12:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:31,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:32,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:32,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006661902] [2024-10-11 06:12:32,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006661902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:32,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:32,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 06:12:32,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725436557] [2024-10-11 06:12:32,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:32,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:32,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:32,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:32,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:32,171 INFO L87 Difference]: Start difference. First operand 377 states and 527 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2024-10-11 06:12:32,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:32,232 INFO L93 Difference]: Finished difference Result 736 states and 1027 transitions. [2024-10-11 06:12:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:12:32,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 [2024-10-11 06:12:32,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:32,234 INFO L225 Difference]: With dead ends: 736 [2024-10-11 06:12:32,234 INFO L226 Difference]: Without dead ends: 415 [2024-10-11 06:12:32,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:32,236 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 12 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:32,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1488 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-10-11 06:12:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2024-10-11 06:12:32,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 414 states have (on average 1.396135265700483) internal successors, (578), 414 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:32,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 578 transitions. [2024-10-11 06:12:32,247 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 578 transitions. Word has length 77 [2024-10-11 06:12:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:32,247 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 578 transitions. [2024-10-11 06:12:32,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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) [2024-10-11 06:12:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 578 transitions. [2024-10-11 06:12:32,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-11 06:12:32,249 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:32,249 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] [2024-10-11 06:12:32,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 06:12:32,249 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:32,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:32,250 INFO L85 PathProgramCache]: Analyzing trace with hash 685623639, now seen corresponding path program 1 times [2024-10-11 06:12:32,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:32,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060899664] [2024-10-11 06:12:32,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:32,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:32,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:32,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060899664] [2024-10-11 06:12:32,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060899664] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:32,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:32,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:12:32,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749076937] [2024-10-11 06:12:32,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:32,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:12:32,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:32,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:12:32,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:32,816 INFO L87 Difference]: Start difference. First operand 415 states and 578 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) 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) [2024-10-11 06:12:32,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:32,898 INFO L93 Difference]: Finished difference Result 759 states and 1055 transitions. [2024-10-11 06:12:32,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:12:32,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) 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 [2024-10-11 06:12:32,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:32,901 INFO L225 Difference]: With dead ends: 759 [2024-10-11 06:12:32,901 INFO L226 Difference]: Without dead ends: 439 [2024-10-11 06:12:32,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:12:32,903 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 238 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:32,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 967 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:12:32,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-10-11 06:12:32,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2024-10-11 06:12:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.3881278538812785) internal successors, (608), 438 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 608 transitions. [2024-10-11 06:12:32,913 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 608 transitions. Word has length 77 [2024-10-11 06:12:32,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:32,914 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 608 transitions. [2024-10-11 06:12:32,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) 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) [2024-10-11 06:12:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 608 transitions. [2024-10-11 06:12:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-11 06:12:32,915 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:32,915 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] [2024-10-11 06:12:32,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 06:12:32,916 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:32,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash 880469719, now seen corresponding path program 1 times [2024-10-11 06:12:32,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:32,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792679523] [2024-10-11 06:12:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:32,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:33,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:33,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:33,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792679523] [2024-10-11 06:12:33,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792679523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:33,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:33,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:33,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550637713] [2024-10-11 06:12:33,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:33,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:33,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:33,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:33,164 INFO L87 Difference]: Start difference. First operand 439 states and 608 transitions. Second operand has 5 states, 5 states have (on average 15.6) 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) [2024-10-11 06:12:33,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:33,230 INFO L93 Difference]: Finished difference Result 816 states and 1122 transitions. [2024-10-11 06:12:33,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:33,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) 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 [2024-10-11 06:12:33,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:33,233 INFO L225 Difference]: With dead ends: 816 [2024-10-11 06:12:33,233 INFO L226 Difference]: Without dead ends: 453 [2024-10-11 06:12:33,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:33,235 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 489 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:33,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 739 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-10-11 06:12:33,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 413. [2024-10-11 06:12:33,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.383495145631068) internal successors, (570), 412 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 570 transitions. [2024-10-11 06:12:33,244 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 570 transitions. Word has length 78 [2024-10-11 06:12:33,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:33,245 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 570 transitions. [2024-10-11 06:12:33,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) 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) [2024-10-11 06:12:33,245 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 570 transitions. [2024-10-11 06:12:33,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-11 06:12:33,246 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:33,246 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] [2024-10-11 06:12:33,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 06:12:33,246 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:33,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:33,247 INFO L85 PathProgramCache]: Analyzing trace with hash -21545513, now seen corresponding path program 1 times [2024-10-11 06:12:33,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:33,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273961803] [2024-10-11 06:12:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:33,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:33,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:33,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273961803] [2024-10-11 06:12:33,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273961803] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:33,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:33,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:12:33,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278277313] [2024-10-11 06:12:33,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:33,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:33,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:33,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:33,478 INFO L87 Difference]: Start difference. First operand 413 states and 570 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2024-10-11 06:12:33,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:33,507 INFO L93 Difference]: Finished difference Result 791 states and 1092 transitions. [2024-10-11 06:12:33,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:33,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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 [2024-10-11 06:12:33,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:33,510 INFO L225 Difference]: With dead ends: 791 [2024-10-11 06:12:33,510 INFO L226 Difference]: Without dead ends: 445 [2024-10-11 06:12:33,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:33,512 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 12 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:33,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1008 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-10-11 06:12:33,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2024-10-11 06:12:33,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.382882882882883) internal successors, (614), 444 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:33,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 614 transitions. [2024-10-11 06:12:33,523 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 614 transitions. Word has length 78 [2024-10-11 06:12:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:33,523 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 614 transitions. [2024-10-11 06:12:33,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2024-10-11 06:12:33,525 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 614 transitions. [2024-10-11 06:12:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-11 06:12:33,525 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:33,526 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] [2024-10-11 06:12:33,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 06:12:33,526 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:33,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:33,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1387306288, now seen corresponding path program 1 times [2024-10-11 06:12:33,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:33,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836126881] [2024-10-11 06:12:33,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:33,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:34,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:34,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836126881] [2024-10-11 06:12:34,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836126881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:34,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:34,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:12:34,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067317609] [2024-10-11 06:12:34,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:34,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:12:34,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:34,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:12:34,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:12:34,117 INFO L87 Difference]: Start difference. First operand 445 states and 614 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 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) [2024-10-11 06:12:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:34,202 INFO L93 Difference]: Finished difference Result 838 states and 1156 transitions. [2024-10-11 06:12:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:12:34,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 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 [2024-10-11 06:12:34,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:34,205 INFO L225 Difference]: With dead ends: 838 [2024-10-11 06:12:34,205 INFO L226 Difference]: Without dead ends: 469 [2024-10-11 06:12:34,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 06:12:34,207 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 247 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:34,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 967 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:12:34,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2024-10-11 06:12:34,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2024-10-11 06:12:34,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 468 states have (on average 1.3803418803418803) internal successors, (646), 468 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 646 transitions. [2024-10-11 06:12:34,223 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 646 transitions. Word has length 78 [2024-10-11 06:12:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:34,224 INFO L471 AbstractCegarLoop]: Abstraction has 469 states and 646 transitions. [2024-10-11 06:12:34,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 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) [2024-10-11 06:12:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 646 transitions. [2024-10-11 06:12:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 06:12:34,226 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:34,226 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, 1] [2024-10-11 06:12:34,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 06:12:34,227 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:34,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:34,227 INFO L85 PathProgramCache]: Analyzing trace with hash -40923526, now seen corresponding path program 1 times [2024-10-11 06:12:34,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:34,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388722414] [2024-10-11 06:12:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:34,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:34,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:34,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388722414] [2024-10-11 06:12:34,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388722414] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:34,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:34,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 06:12:34,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764077354] [2024-10-11 06:12:34,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:34,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 06:12:34,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:34,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 06:12:34,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:34,843 INFO L87 Difference]: Start difference. First operand 469 states and 646 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:34,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:34,963 INFO L93 Difference]: Finished difference Result 889 states and 1222 transitions. [2024-10-11 06:12:34,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:12:34,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-10-11 06:12:34,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:34,966 INFO L225 Difference]: With dead ends: 889 [2024-10-11 06:12:34,967 INFO L226 Difference]: Without dead ends: 481 [2024-10-11 06:12:34,968 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-10-11 06:12:34,969 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 253 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:34,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1206 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 06:12:34,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-10-11 06:12:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2024-10-11 06:12:34,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3791666666666667) internal successors, (662), 480 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 662 transitions. [2024-10-11 06:12:34,983 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 662 transitions. Word has length 79 [2024-10-11 06:12:34,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:34,984 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 662 transitions. [2024-10-11 06:12:34,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:34,984 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 662 transitions. [2024-10-11 06:12:34,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-10-11 06:12:34,985 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:34,985 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, 1] [2024-10-11 06:12:34,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 06:12:34,985 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:34,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:34,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1296919732, now seen corresponding path program 1 times [2024-10-11 06:12:34,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:34,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045329528] [2024-10-11 06:12:34,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:34,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:35,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045329528] [2024-10-11 06:12:35,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045329528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:35,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:35,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:35,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159543704] [2024-10-11 06:12:35,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:35,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:35,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:35,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:35,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:35,236 INFO L87 Difference]: Start difference. First operand 481 states and 662 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:35,300 INFO L93 Difference]: Finished difference Result 913 states and 1246 transitions. [2024-10-11 06:12:35,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:35,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2024-10-11 06:12:35,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:35,302 INFO L225 Difference]: With dead ends: 913 [2024-10-11 06:12:35,303 INFO L226 Difference]: Without dead ends: 495 [2024-10-11 06:12:35,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:35,304 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 477 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:35,306 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 739 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-10-11 06:12:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 455. [2024-10-11 06:12:35,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.3700440528634361) internal successors, (622), 454 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 622 transitions. [2024-10-11 06:12:35,319 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 622 transitions. Word has length 79 [2024-10-11 06:12:35,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:35,319 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 622 transitions. [2024-10-11 06:12:35,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:35,320 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 622 transitions. [2024-10-11 06:12:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-11 06:12:35,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:35,321 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, 1, 1] [2024-10-11 06:12:35,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 06:12:35,321 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:35,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:35,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1648216023, now seen corresponding path program 1 times [2024-10-11 06:12:35,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:35,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083760725] [2024-10-11 06:12:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:35,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:35,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:35,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083760725] [2024-10-11 06:12:35,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083760725] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:12:35,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:12:35,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 06:12:35,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387467560] [2024-10-11 06:12:35,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:12:35,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 06:12:35,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:35,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 06:12:35,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 06:12:35,560 INFO L87 Difference]: Start difference. First operand 455 states and 622 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:35,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:35,626 INFO L93 Difference]: Finished difference Result 836 states and 1143 transitions. [2024-10-11 06:12:35,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 06:12:35,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2024-10-11 06:12:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:35,628 INFO L225 Difference]: With dead ends: 836 [2024-10-11 06:12:35,629 INFO L226 Difference]: Without dead ends: 418 [2024-10-11 06:12:35,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:12:35,630 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 427 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:35,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 739 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 06:12:35,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-10-11 06:12:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 397. [2024-10-11 06:12:35,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.3838383838383839) internal successors, (548), 396 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 548 transitions. [2024-10-11 06:12:35,644 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 548 transitions. Word has length 80 [2024-10-11 06:12:35,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:35,644 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 548 transitions. [2024-10-11 06:12:35,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 548 transitions. [2024-10-11 06:12:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-10-11 06:12:35,646 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:35,646 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:35,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-11 06:12:35,647 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:35,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:35,649 INFO L85 PathProgramCache]: Analyzing trace with hash 692500064, now seen corresponding path program 1 times [2024-10-11 06:12:35,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:35,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646147867] [2024-10-11 06:12:35,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:35,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:38,327 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:38,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:38,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646147867] [2024-10-11 06:12:38,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646147867] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:12:38,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787233242] [2024-10-11 06:12:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:38,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:12:38,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:12:38,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:12:38,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 06:12:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:39,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-10-11 06:12:39,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:12:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:42,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:12:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:45,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787233242] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:12:45,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:12:45,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 18] total 41 [2024-10-11 06:12:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708309750] [2024-10-11 06:12:45,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:12:45,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-11 06:12:45,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:45,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-11 06:12:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2024-10-11 06:12:45,472 INFO L87 Difference]: Start difference. First operand 397 states and 548 transitions. Second operand has 41 states, 41 states have (on average 10.560975609756097) internal successors, (433), 41 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:52,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:52,584 INFO L93 Difference]: Finished difference Result 2796 states and 3883 transitions. [2024-10-11 06:12:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-10-11 06:12:52,585 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 10.560975609756097) internal successors, (433), 41 states have internal predecessors, (433), 0 states have call successors, (0), 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 150 [2024-10-11 06:12:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:52,596 INFO L225 Difference]: With dead ends: 2796 [2024-10-11 06:12:52,596 INFO L226 Difference]: Without dead ends: 2442 [2024-10-11 06:12:52,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4938 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1637, Invalid=14365, Unknown=0, NotChecked=0, Total=16002 [2024-10-11 06:12:52,605 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 5105 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 3883 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5105 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:52,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5105 Valid, 3330 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3883 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-10-11 06:12:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2024-10-11 06:12:52,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1069. [2024-10-11 06:12:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1069 states, 1068 states have (on average 1.3745318352059925) internal successors, (1468), 1068 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1468 transitions. [2024-10-11 06:12:52,652 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1468 transitions. Word has length 150 [2024-10-11 06:12:52,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:52,652 INFO L471 AbstractCegarLoop]: Abstraction has 1069 states and 1468 transitions. [2024-10-11 06:12:52,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.560975609756097) internal successors, (433), 41 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1468 transitions. [2024-10-11 06:12:52,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-11 06:12:52,656 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:52,656 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:52,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 06:12:52,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-11 06:12:52,861 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:52,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:52,862 INFO L85 PathProgramCache]: Analyzing trace with hash -490709916, now seen corresponding path program 1 times [2024-10-11 06:12:52,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:52,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594604153] [2024-10-11 06:12:52,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:52,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 31 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:54,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:54,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594604153] [2024-10-11 06:12:54,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594604153] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:12:54,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034228661] [2024-10-11 06:12:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:54,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:12:54,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:12:54,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:12:54,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 06:12:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:54,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 06:12:54,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:12:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:55,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:12:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:55,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034228661] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:12:55,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:12:55,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-11 06:12:55,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038748330] [2024-10-11 06:12:55,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:12:55,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 06:12:55,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:12:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 06:12:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-10-11 06:12:55,576 INFO L87 Difference]: Start difference. First operand 1069 states and 1468 transitions. Second operand has 14 states, 14 states have (on average 22.785714285714285) internal successors, (319), 14 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:12:56,437 INFO L93 Difference]: Finished difference Result 3291 states and 4533 transitions. [2024-10-11 06:12:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 06:12:56,438 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.785714285714285) internal successors, (319), 14 states have internal predecessors, (319), 0 states have call successors, (0), 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 152 [2024-10-11 06:12:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:12:56,445 INFO L225 Difference]: With dead ends: 3291 [2024-10-11 06:12:56,445 INFO L226 Difference]: Without dead ends: 1773 [2024-10-11 06:12:56,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 297 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2024-10-11 06:12:56,449 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 881 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 06:12:56,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1516 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 06:12:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2024-10-11 06:12:56,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1575. [2024-10-11 06:12:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 1.3672172808132148) internal successors, (2152), 1574 states have internal predecessors, (2152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2152 transitions. [2024-10-11 06:12:56,489 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2152 transitions. Word has length 152 [2024-10-11 06:12:56,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:12:56,489 INFO L471 AbstractCegarLoop]: Abstraction has 1575 states and 2152 transitions. [2024-10-11 06:12:56,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.785714285714285) internal successors, (319), 14 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:12:56,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2152 transitions. [2024-10-11 06:12:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-11 06:12:56,493 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:12:56,493 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:12:56,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 06:12:56,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:12:56,698 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:12:56,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:12:56,698 INFO L85 PathProgramCache]: Analyzing trace with hash -9330219, now seen corresponding path program 1 times [2024-10-11 06:12:56,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:12:56,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65644477] [2024-10-11 06:12:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:56,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:12:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:58,418 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:58,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:12:58,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65644477] [2024-10-11 06:12:58,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65644477] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:12:58,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495946650] [2024-10-11 06:12:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:12:58,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:12:58,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:12:58,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:12:58,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 06:12:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:12:58,943 INFO L255 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-11 06:12:58,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:12:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:12:59,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:13:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:13:00,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495946650] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:13:00,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:13:00,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 12] total 26 [2024-10-11 06:13:00,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388694503] [2024-10-11 06:13:00,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:13:00,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 06:13:00,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:13:00,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 06:13:00,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2024-10-11 06:13:00,899 INFO L87 Difference]: Start difference. First operand 1575 states and 2152 transitions. Second operand has 26 states, 26 states have (on average 16.884615384615383) internal successors, (439), 26 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:03,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:13:03,010 INFO L93 Difference]: Finished difference Result 5482 states and 7563 transitions. [2024-10-11 06:13:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 06:13:03,010 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 16.884615384615383) internal successors, (439), 26 states have internal predecessors, (439), 0 states have call successors, (0), 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 152 [2024-10-11 06:13:03,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:13:03,023 INFO L225 Difference]: With dead ends: 5482 [2024-10-11 06:13:03,023 INFO L226 Difference]: Without dead ends: 3944 [2024-10-11 06:13:03,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=349, Invalid=1721, Unknown=0, NotChecked=0, Total=2070 [2024-10-11 06:13:03,028 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 1900 mSDsluCounter, 3936 mSDsCounter, 0 mSdLazyCounter, 3459 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1900 SdHoareTripleChecker+Valid, 4291 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-11 06:13:03,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1900 Valid, 4291 Invalid, 3467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3459 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-11 06:13:03,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2024-10-11 06:13:03,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 2905. [2024-10-11 06:13:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2904 states have (on average 1.3739669421487604) internal successors, (3990), 2904 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 3990 transitions. [2024-10-11 06:13:03,100 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 3990 transitions. Word has length 152 [2024-10-11 06:13:03,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:13:03,101 INFO L471 AbstractCegarLoop]: Abstraction has 2905 states and 3990 transitions. [2024-10-11 06:13:03,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 16.884615384615383) internal successors, (439), 26 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:03,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 3990 transitions. [2024-10-11 06:13:03,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-11 06:13:03,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:13:03,108 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:13:03,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 06:13:03,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:13:03,309 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:13:03,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:13:03,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1747137563, now seen corresponding path program 1 times [2024-10-11 06:13:03,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:13:03,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940594273] [2024-10-11 06:13:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:13:03,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:13:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:13:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:13:05,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:13:05,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940594273] [2024-10-11 06:13:05,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940594273] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:13:05,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368103996] [2024-10-11 06:13:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:13:05,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:13:05,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:13:05,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:13:05,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 06:13:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:13:05,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-11 06:13:05,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:13:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 06:13:06,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:13:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:13:07,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368103996] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:13:07,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:13:07,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 12] total 26 [2024-10-11 06:13:07,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557754763] [2024-10-11 06:13:07,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:13:07,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 06:13:07,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:13:07,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 06:13:07,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2024-10-11 06:13:07,018 INFO L87 Difference]: Start difference. First operand 2905 states and 3990 transitions. Second operand has 26 states, 26 states have (on average 15.73076923076923) internal successors, (409), 26 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:10,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:13:10,661 INFO L93 Difference]: Finished difference Result 8171 states and 11226 transitions. [2024-10-11 06:13:10,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-10-11 06:13:10,661 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 15.73076923076923) internal successors, (409), 26 states have internal predecessors, (409), 0 states have call successors, (0), 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 153 [2024-10-11 06:13:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:13:10,680 INFO L225 Difference]: With dead ends: 8171 [2024-10-11 06:13:10,680 INFO L226 Difference]: Without dead ends: 5379 [2024-10-11 06:13:10,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3393 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1565, Invalid=10207, Unknown=0, NotChecked=0, Total=11772 [2024-10-11 06:13:10,690 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 3770 mSDsluCounter, 3564 mSDsCounter, 0 mSdLazyCounter, 3584 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3770 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-11 06:13:10,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3770 Valid, 3788 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3584 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-11 06:13:10,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5379 states. [2024-10-11 06:13:10,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5379 to 2837. [2024-10-11 06:13:10,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2837 states, 2836 states have (on average 1.3483779971791254) internal successors, (3824), 2836 states have internal predecessors, (3824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 3824 transitions. [2024-10-11 06:13:10,771 INFO L78 Accepts]: Start accepts. Automaton has 2837 states and 3824 transitions. Word has length 153 [2024-10-11 06:13:10,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:13:10,771 INFO L471 AbstractCegarLoop]: Abstraction has 2837 states and 3824 transitions. [2024-10-11 06:13:10,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 15.73076923076923) internal successors, (409), 26 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:10,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2837 states and 3824 transitions. [2024-10-11 06:13:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-11 06:13:10,778 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:13:10,778 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:13:10,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 06:13:10,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-11 06:13:10,979 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:13:10,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:13:10,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1043042604, now seen corresponding path program 1 times [2024-10-11 06:13:10,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:13:10,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390242620] [2024-10-11 06:13:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:13:10,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:13:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:13:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 06:13:12,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:13:12,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390242620] [2024-10-11 06:13:12,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390242620] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:13:12,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:13:12,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:13:12,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321517864] [2024-10-11 06:13:12,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:13:12,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:13:12,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:13:12,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:13:12,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:13:12,308 INFO L87 Difference]: Start difference. First operand 2837 states and 3824 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:13:12,655 INFO L93 Difference]: Finished difference Result 7859 states and 10574 transitions. [2024-10-11 06:13:12,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 06:13:12,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 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 153 [2024-10-11 06:13:12,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:13:12,672 INFO L225 Difference]: With dead ends: 7859 [2024-10-11 06:13:12,672 INFO L226 Difference]: Without dead ends: 5129 [2024-10-11 06:13:12,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:13:12,677 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 390 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 06:13:12,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 569 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 06:13:12,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5129 states. [2024-10-11 06:13:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5129 to 4481. [2024-10-11 06:13:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4481 states, 4480 states have (on average 1.3517857142857144) internal successors, (6056), 4480 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4481 states to 4481 states and 6056 transitions. [2024-10-11 06:13:12,756 INFO L78 Accepts]: Start accepts. Automaton has 4481 states and 6056 transitions. Word has length 153 [2024-10-11 06:13:12,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:13:12,756 INFO L471 AbstractCegarLoop]: Abstraction has 4481 states and 6056 transitions. [2024-10-11 06:13:12,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4481 states and 6056 transitions. [2024-10-11 06:13:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-10-11 06:13:12,766 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:13:12,767 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:13:12,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-11 06:13:12,767 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:13:12,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:13:12,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1325471094, now seen corresponding path program 1 times [2024-10-11 06:13:12,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:13:12,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7252332] [2024-10-11 06:13:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:13:12,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:13:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:13:13,925 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 06:13:13,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:13:13,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7252332] [2024-10-11 06:13:13,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7252332] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 06:13:13,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 06:13:13,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 06:13:13,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804598000] [2024-10-11 06:13:13,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 06:13:13,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 06:13:13,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:13:13,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 06:13:13,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 06:13:13,930 INFO L87 Difference]: Start difference. First operand 4481 states and 6056 transitions. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:14,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 06:13:14,360 INFO L93 Difference]: Finished difference Result 11037 states and 14918 transitions. [2024-10-11 06:13:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 06:13:14,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 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 153 [2024-10-11 06:13:14,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 06:13:14,372 INFO L225 Difference]: With dead ends: 11037 [2024-10-11 06:13:14,373 INFO L226 Difference]: Without dead ends: 6643 [2024-10-11 06:13:14,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 06:13:14,379 INFO L432 NwaCegarLoop]: 239 mSDtfsCounter, 319 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 06:13:14,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 850 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 06:13:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6643 states. [2024-10-11 06:13:14,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6643 to 5465. [2024-10-11 06:13:14,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5465 states, 5464 states have (on average 1.342606149341142) internal successors, (7336), 5464 states have internal predecessors, (7336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:14,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5465 states to 5465 states and 7336 transitions. [2024-10-11 06:13:14,457 INFO L78 Accepts]: Start accepts. Automaton has 5465 states and 7336 transitions. Word has length 153 [2024-10-11 06:13:14,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 06:13:14,457 INFO L471 AbstractCegarLoop]: Abstraction has 5465 states and 7336 transitions. [2024-10-11 06:13:14,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 06:13:14,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5465 states and 7336 transitions. [2024-10-11 06:13:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-10-11 06:13:14,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 06:13:14,469 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 06:13:14,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-11 06:13:14,469 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 06:13:14,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 06:13:14,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1295977665, now seen corresponding path program 1 times [2024-10-11 06:13:14,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 06:13:14,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571709827] [2024-10-11 06:13:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:13:14,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 06:13:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:13:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:13:17,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 06:13:17,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571709827] [2024-10-11 06:13:17,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571709827] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 06:13:17,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573534181] [2024-10-11 06:13:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 06:13:17,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 06:13:17,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 06:13:17,955 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 06:13:17,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 06:13:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 06:13:18,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 06:13:18,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 06:13:19,027 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:13:19,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 06:13:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 06:13:19,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573534181] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 06:13:19,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 06:13:19,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 7] total 22 [2024-10-11 06:13:19,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011942149] [2024-10-11 06:13:19,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 06:13:19,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-11 06:13:19,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 06:13:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-11 06:13:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2024-10-11 06:13:19,265 INFO L87 Difference]: Start difference. First operand 5465 states and 7336 transitions. Second operand has 22 states, 22 states have (on average 17.90909090909091) internal successors, (394), 22 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)