./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label17.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label17.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ae22f3f06aabed24b98a90f87729aaa6479f5932deb24c738c216ff13229105f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:30:00,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:30:00,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:30:00,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:30:00,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:30:00,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:30:00,998 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:30:00,998 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:30:00,999 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:30:01,000 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:30:01,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:30:01,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:30:01,001 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:30:01,002 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:30:01,002 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:30:01,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:30:01,004 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:30:01,005 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:30:01,005 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:30:01,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:30:01,006 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:30:01,010 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:30:01,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:30:01,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:30:01,011 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:30:01,011 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:30:01,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:30:01,012 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:30:01,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:30:01,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:30:01,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:30:01,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:30:01,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:30:01,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:30:01,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:30:01,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:30:01,014 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:30:01,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:30:01,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:30:01,016 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:30:01,016 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:30:01,017 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:30:01,017 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae22f3f06aabed24b98a90f87729aaa6479f5932deb24c738c216ff13229105f [2024-10-23 21:30:01,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:30:01,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:30:01,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:30:01,316 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:30:01,317 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:30:01,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label17.c [2024-10-23 21:30:02,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:30:03,079 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:30:03,080 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label17.c [2024-10-23 21:30:03,106 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101a4858e/5120b54fc4784a1897fc46ac7ce236ca/FLAGca65a1518 [2024-10-23 21:30:03,303 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/101a4858e/5120b54fc4784a1897fc46ac7ce236ca [2024-10-23 21:30:03,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:30:03,307 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:30:03,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:30:03,308 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:30:03,313 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:30:03,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:30:03" (1/1) ... [2024-10-23 21:30:03,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c6d179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:03, skipping insertion in model container [2024-10-23 21:30:03,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:30:03" (1/1) ... [2024-10-23 21:30:03,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:30:03,690 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label17.c[5781,5794] [2024-10-23 21:30:04,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:30:04,253 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:30:04,283 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label17.c[5781,5794] [2024-10-23 21:30:04,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:30:04,552 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:30:04,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04 WrapperNode [2024-10-23 21:30:04,553 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:30:04,554 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:30:04,554 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:30:04,554 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:30:04,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:04,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:04,867 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-23 21:30:04,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:30:04,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:30:04,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:30:04,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:30:04,906 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:04,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:04,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:05,179 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]. [2024-10-23 21:30:05,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:05,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:05,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:05,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:05,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:05,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:05,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:30:05,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:30:05,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:30:05,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:30:05,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (1/1) ... [2024-10-23 21:30:05,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:30:05,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:30:05,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:30:05,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:30:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:30:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:30:05,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:30:05,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:30:05,530 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:30:05,533 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:30:08,768 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-23 21:30:08,771 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:30:08,840 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:30:08,841 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:30:08,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:30:08 BoogieIcfgContainer [2024-10-23 21:30:08,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:30:08,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:30:08,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:30:08,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:30:08,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:30:03" (1/3) ... [2024-10-23 21:30:08,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d17adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:30:08, skipping insertion in model container [2024-10-23 21:30:08,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:30:04" (2/3) ... [2024-10-23 21:30:08,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61d17adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:30:08, skipping insertion in model container [2024-10-23 21:30:08,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:30:08" (3/3) ... [2024-10-23 21:30:08,851 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label17.c [2024-10-23 21:30:08,870 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:30:08,870 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:30:08,958 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:30:08,965 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;@38456e86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:30:08,966 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:30:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:08,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-23 21:30:08,980 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:08,981 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] [2024-10-23 21:30:08,982 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:08,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:08,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1085236465, now seen corresponding path program 1 times [2024-10-23 21:30:08,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:08,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144231557] [2024-10-23 21:30:08,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:08,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:09,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144231557] [2024-10-23 21:30:09,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144231557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:09,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:09,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:09,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872143653] [2024-10-23 21:30:09,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:09,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:30:09,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:30:09,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:30:09,222 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:09,304 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-23 21:30:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:30:09,307 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-10-23 21:30:09,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:09,319 INFO L225 Difference]: With dead ends: 1055 [2024-10-23 21:30:09,320 INFO L226 Difference]: Without dead ends: 526 [2024-10-23 21:30:09,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:30:09,328 INFO L432 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:09,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:30:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-23 21:30:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-23 21:30:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-23 21:30:09,386 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 37 [2024-10-23 21:30:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:09,387 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-23 21:30:09,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-23 21:30:09,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-23 21:30:09,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:09,388 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] [2024-10-23 21:30:09,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:30:09,390 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:09,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:09,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1566685714, now seen corresponding path program 1 times [2024-10-23 21:30:09,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:09,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137486544] [2024-10-23 21:30:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:09,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:09,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:09,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137486544] [2024-10-23 21:30:09,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137486544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:09,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:09,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:09,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558115852] [2024-10-23 21:30:09,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:09,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:09,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:09,582 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:12,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:12,003 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2024-10-23 21:30:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:12,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-10-23 21:30:12,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:12,009 INFO L225 Difference]: With dead ends: 1522 [2024-10-23 21:30:12,009 INFO L226 Difference]: Without dead ends: 997 [2024-10-23 21:30:12,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:12,011 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 473 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:12,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:30:12,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2024-10-23 21:30:12,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2024-10-23 21:30:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2024-10-23 21:30:12,064 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 37 [2024-10-23 21:30:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:12,064 INFO L471 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2024-10-23 21:30:12,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:12,066 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2024-10-23 21:30:12,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-23 21:30:12,070 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:12,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:12,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:30:12,072 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:12,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:12,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2090111297, now seen corresponding path program 1 times [2024-10-23 21:30:12,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:12,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784688083] [2024-10-23 21:30:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:12,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:12,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:12,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784688083] [2024-10-23 21:30:12,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784688083] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:12,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:12,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:12,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165440941] [2024-10-23 21:30:12,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:12,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:12,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:12,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:12,340 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:14,601 INFO L93 Difference]: Finished difference Result 2840 states and 4880 transitions. [2024-10-23 21:30:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:14,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-10-23 21:30:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:14,609 INFO L225 Difference]: With dead ends: 2840 [2024-10-23 21:30:14,610 INFO L226 Difference]: Without dead ends: 1860 [2024-10-23 21:30:14,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:14,615 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:14,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 494 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:30:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2024-10-23 21:30:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1856. [2024-10-23 21:30:14,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4549865229110512) internal successors, (2699), 1855 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:14,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2699 transitions. [2024-10-23 21:30:14,653 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2699 transitions. Word has length 102 [2024-10-23 21:30:14,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:14,655 INFO L471 AbstractCegarLoop]: Abstraction has 1856 states and 2699 transitions. [2024-10-23 21:30:14,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2699 transitions. [2024-10-23 21:30:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-10-23 21:30:14,661 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:14,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:14,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:30:14,662 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:14,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash -10450956, now seen corresponding path program 1 times [2024-10-23 21:30:14,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:14,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284720246] [2024-10-23 21:30:14,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:14,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:15,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:15,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284720246] [2024-10-23 21:30:15,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284720246] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:15,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:15,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:15,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914591297] [2024-10-23 21:30:15,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:15,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:15,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:15,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:15,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:15,169 INFO L87 Difference]: Start difference. First operand 1856 states and 2699 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:17,255 INFO L93 Difference]: Finished difference Result 4590 states and 6639 transitions. [2024-10-23 21:30:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:17,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2024-10-23 21:30:17,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:17,266 INFO L225 Difference]: With dead ends: 4590 [2024-10-23 21:30:17,267 INFO L226 Difference]: Without dead ends: 2735 [2024-10-23 21:30:17,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:17,270 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:17,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 535 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:30:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2024-10-23 21:30:17,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2715. [2024-10-23 21:30:17,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2714 states have (on average 1.3909358879882092) internal successors, (3775), 2714 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:17,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3775 transitions. [2024-10-23 21:30:17,317 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3775 transitions. Word has length 142 [2024-10-23 21:30:17,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:17,317 INFO L471 AbstractCegarLoop]: Abstraction has 2715 states and 3775 transitions. [2024-10-23 21:30:17,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3775 transitions. [2024-10-23 21:30:17,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-23 21:30:17,320 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:17,320 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:17,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:30:17,320 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:17,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash 487329285, now seen corresponding path program 1 times [2024-10-23 21:30:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:17,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170213369] [2024-10-23 21:30:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:17,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:17,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:17,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170213369] [2024-10-23 21:30:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170213369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:17,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:17,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:30:17,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387447854] [2024-10-23 21:30:17,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:17,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:17,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:17,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:17,518 INFO L87 Difference]: Start difference. First operand 2715 states and 3775 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:19,161 INFO L93 Difference]: Finished difference Result 6708 states and 9428 transitions. [2024-10-23 21:30:19,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:19,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2024-10-23 21:30:19,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:19,175 INFO L225 Difference]: With dead ends: 6708 [2024-10-23 21:30:19,175 INFO L226 Difference]: Without dead ends: 3994 [2024-10-23 21:30:19,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:19,181 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:19,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:30:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2024-10-23 21:30:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3141. [2024-10-23 21:30:19,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3140 states have (on average 1.2745222929936306) internal successors, (4002), 3140 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4002 transitions. [2024-10-23 21:30:19,237 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4002 transitions. Word has length 148 [2024-10-23 21:30:19,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:19,238 INFO L471 AbstractCegarLoop]: Abstraction has 3141 states and 4002 transitions. [2024-10-23 21:30:19,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4002 transitions. [2024-10-23 21:30:19,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-10-23 21:30:19,241 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:19,241 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:19,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:30:19,242 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:19,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:19,242 INFO L85 PathProgramCache]: Analyzing trace with hash -456628353, now seen corresponding path program 1 times [2024-10-23 21:30:19,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:19,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004576955] [2024-10-23 21:30:19,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:19,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:19,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:19,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004576955] [2024-10-23 21:30:19,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004576955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:19,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:19,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-23 21:30:19,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605135961] [2024-10-23 21:30:19,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:19,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-23 21:30:19,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:19,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-23 21:30:19,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:30:19,619 INFO L87 Difference]: Start difference. First operand 3141 states and 4002 transitions. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:22,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:22,223 INFO L93 Difference]: Finished difference Result 8004 states and 10507 transitions. [2024-10-23 21:30:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:22,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2024-10-23 21:30:22,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:22,237 INFO L225 Difference]: With dead ends: 8004 [2024-10-23 21:30:22,238 INFO L226 Difference]: Without dead ends: 4864 [2024-10-23 21:30:22,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:30:22,245 INFO L432 NwaCegarLoop]: 763 mSDtfsCounter, 593 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:22,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 924 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-23 21:30:22,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4864 states. [2024-10-23 21:30:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4864 to 4851. [2024-10-23 21:30:22,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.26659793814433) internal successors, (6143), 4850 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:22,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6143 transitions. [2024-10-23 21:30:22,325 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6143 transitions. Word has length 185 [2024-10-23 21:30:22,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:22,325 INFO L471 AbstractCegarLoop]: Abstraction has 4851 states and 6143 transitions. [2024-10-23 21:30:22,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:22,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6143 transitions. [2024-10-23 21:30:22,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-10-23 21:30:22,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:22,328 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:22,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:30:22,329 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:22,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash -290281424, now seen corresponding path program 1 times [2024-10-23 21:30:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:22,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711292171] [2024-10-23 21:30:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:22,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:30:22,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:22,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711292171] [2024-10-23 21:30:22,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711292171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:22,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:22,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:22,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864222800] [2024-10-23 21:30:22,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:22,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:22,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:22,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:22,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:22,484 INFO L87 Difference]: Start difference. First operand 4851 states and 6143 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:24,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:24,326 INFO L93 Difference]: Finished difference Result 12248 states and 15824 transitions. [2024-10-23 21:30:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:24,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 191 [2024-10-23 21:30:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:24,345 INFO L225 Difference]: With dead ends: 12248 [2024-10-23 21:30:24,345 INFO L226 Difference]: Without dead ends: 7398 [2024-10-23 21:30:24,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:24,353 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 409 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:24,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 543 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:30:24,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2024-10-23 21:30:24,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 4825. [2024-10-23 21:30:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 1.265339966832504) internal successors, (6104), 4824 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:24,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 6104 transitions. [2024-10-23 21:30:24,430 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 6104 transitions. Word has length 191 [2024-10-23 21:30:24,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:24,430 INFO L471 AbstractCegarLoop]: Abstraction has 4825 states and 6104 transitions. [2024-10-23 21:30:24,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:24,431 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 6104 transitions. [2024-10-23 21:30:24,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-10-23 21:30:24,433 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:24,433 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:24,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:30:24,433 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:24,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1212911604, now seen corresponding path program 1 times [2024-10-23 21:30:24,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:24,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973567324] [2024-10-23 21:30:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:24,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:30:24,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:24,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973567324] [2024-10-23 21:30:24,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973567324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:24,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:24,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:24,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613722482] [2024-10-23 21:30:24,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:24,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:24,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:24,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:24,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:24,618 INFO L87 Difference]: Start difference. First operand 4825 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:26,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:26,341 INFO L93 Difference]: Finished difference Result 13480 states and 17130 transitions. [2024-10-23 21:30:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:26,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 204 [2024-10-23 21:30:26,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:26,366 INFO L225 Difference]: With dead ends: 13480 [2024-10-23 21:30:26,366 INFO L226 Difference]: Without dead ends: 8656 [2024-10-23 21:30:26,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:26,379 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 445 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:26,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 481 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:30:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8656 states. [2024-10-23 21:30:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8656 to 7377. [2024-10-23 21:30:26,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7377 states, 7376 states have (on average 1.247966377440347) internal successors, (9205), 7376 states have internal predecessors, (9205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7377 states to 7377 states and 9205 transitions. [2024-10-23 21:30:26,499 INFO L78 Accepts]: Start accepts. Automaton has 7377 states and 9205 transitions. Word has length 204 [2024-10-23 21:30:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:26,500 INFO L471 AbstractCegarLoop]: Abstraction has 7377 states and 9205 transitions. [2024-10-23 21:30:26,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:26,500 INFO L276 IsEmpty]: Start isEmpty. Operand 7377 states and 9205 transitions. [2024-10-23 21:30:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-23 21:30:26,503 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:26,503 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:26,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:30:26,504 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:26,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:26,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1211809152, now seen corresponding path program 1 times [2024-10-23 21:30:26,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:26,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671079697] [2024-10-23 21:30:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:26,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:30:26,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:26,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671079697] [2024-10-23 21:30:26,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671079697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:26,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:26,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:26,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717607433] [2024-10-23 21:30:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:26,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:26,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:26,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:26,896 INFO L87 Difference]: Start difference. First operand 7377 states and 9205 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:28,843 INFO L93 Difference]: Finished difference Result 19034 states and 23867 transitions. [2024-10-23 21:30:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:28,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 253 [2024-10-23 21:30:28,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:28,866 INFO L225 Difference]: With dead ends: 19034 [2024-10-23 21:30:28,866 INFO L226 Difference]: Without dead ends: 10806 [2024-10-23 21:30:28,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:28,877 INFO L432 NwaCegarLoop]: 819 mSDtfsCounter, 370 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:28,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 893 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-23 21:30:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10806 states. [2024-10-23 21:30:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10806 to 10798. [2024-10-23 21:30:29,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10798 states, 10797 states have (on average 1.1794016856534222) internal successors, (12734), 10797 states have internal predecessors, (12734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10798 states to 10798 states and 12734 transitions. [2024-10-23 21:30:29,022 INFO L78 Accepts]: Start accepts. Automaton has 10798 states and 12734 transitions. Word has length 253 [2024-10-23 21:30:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:29,022 INFO L471 AbstractCegarLoop]: Abstraction has 10798 states and 12734 transitions. [2024-10-23 21:30:29,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:29,023 INFO L276 IsEmpty]: Start isEmpty. Operand 10798 states and 12734 transitions. [2024-10-23 21:30:29,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-10-23 21:30:29,027 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:29,028 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:29,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:30:29,028 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:29,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1999916796, now seen corresponding path program 1 times [2024-10-23 21:30:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:29,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586648250] [2024-10-23 21:30:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:29,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 210 proven. 70 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-23 21:30:29,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:29,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586648250] [2024-10-23 21:30:29,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586648250] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:30:29,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094558393] [2024-10-23 21:30:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:29,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:30:29,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:30:29,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:30:29,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:30:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:29,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:30:29,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:30:29,858 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 210 proven. 70 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-23 21:30:29,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:30:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-23 21:30:30,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094558393] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:30:30,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:30:30,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:30:30,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432532832] [2024-10-23 21:30:30,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:30,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:30,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:30,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:30,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:30:30,157 INFO L87 Difference]: Start difference. First operand 10798 states and 12734 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:33,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:33,305 INFO L93 Difference]: Finished difference Result 35676 states and 42171 transitions. [2024-10-23 21:30:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:33,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 261 [2024-10-23 21:30:33,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:33,350 INFO L225 Difference]: With dead ends: 35676 [2024-10-23 21:30:33,350 INFO L226 Difference]: Without dead ends: 24018 [2024-10-23 21:30:33,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:30:33,365 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 1085 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 1254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1254 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:33,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 141 Invalid, 3523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1254 Valid, 2269 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-23 21:30:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24018 states. [2024-10-23 21:30:33,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24018 to 22741. [2024-10-23 21:30:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22741 states, 22740 states have (on average 1.155321020228672) internal successors, (26272), 22740 states have internal predecessors, (26272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22741 states to 22741 states and 26272 transitions. [2024-10-23 21:30:33,677 INFO L78 Accepts]: Start accepts. Automaton has 22741 states and 26272 transitions. Word has length 261 [2024-10-23 21:30:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:33,678 INFO L471 AbstractCegarLoop]: Abstraction has 22741 states and 26272 transitions. [2024-10-23 21:30:33,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 22741 states and 26272 transitions. [2024-10-23 21:30:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2024-10-23 21:30:33,682 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:33,682 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:33,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:30:33,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-23 21:30:33,884 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:33,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:33,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2127945056, now seen corresponding path program 1 times [2024-10-23 21:30:33,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:33,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400118430] [2024-10-23 21:30:33,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:33,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-23 21:30:34,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:34,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400118430] [2024-10-23 21:30:34,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400118430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:34,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:34,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:34,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332562477] [2024-10-23 21:30:34,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:34,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:34,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:34,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:34,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:34,068 INFO L87 Difference]: Start difference. First operand 22741 states and 26272 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:35,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:35,678 INFO L93 Difference]: Finished difference Result 50582 states and 58591 transitions. [2024-10-23 21:30:35,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:35,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 274 [2024-10-23 21:30:35,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:35,727 INFO L225 Difference]: With dead ends: 50582 [2024-10-23 21:30:35,728 INFO L226 Difference]: Without dead ends: 27415 [2024-10-23 21:30:35,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:35,745 INFO L432 NwaCegarLoop]: 773 mSDtfsCounter, 378 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:35,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 839 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:30:35,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27415 states. [2024-10-23 21:30:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27415 to 27415. [2024-10-23 21:30:36,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27415 states, 27414 states have (on average 1.1312103304880718) internal successors, (31011), 27414 states have internal predecessors, (31011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:36,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27415 states to 27415 states and 31011 transitions. [2024-10-23 21:30:36,039 INFO L78 Accepts]: Start accepts. Automaton has 27415 states and 31011 transitions. Word has length 274 [2024-10-23 21:30:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:36,040 INFO L471 AbstractCegarLoop]: Abstraction has 27415 states and 31011 transitions. [2024-10-23 21:30:36,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:36,040 INFO L276 IsEmpty]: Start isEmpty. Operand 27415 states and 31011 transitions. [2024-10-23 21:30:36,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-10-23 21:30:36,046 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:36,047 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:36,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:30:36,048 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:36,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:36,048 INFO L85 PathProgramCache]: Analyzing trace with hash 774884790, now seen corresponding path program 1 times [2024-10-23 21:30:36,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:36,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095182141] [2024-10-23 21:30:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:36,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 232 proven. 78 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-23 21:30:36,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:36,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095182141] [2024-10-23 21:30:36,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095182141] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:30:36,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360709806] [2024-10-23 21:30:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:36,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:30:36,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:30:36,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:30:36,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:30:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:36,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:30:36,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:30:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 232 proven. 78 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-23 21:30:36,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:30:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-23 21:30:37,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360709806] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:30:37,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:30:37,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:30:37,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502549114] [2024-10-23 21:30:37,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:37,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:37,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:37,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:37,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:30:37,121 INFO L87 Difference]: Start difference. First operand 27415 states and 31011 transitions. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:39,634 INFO L93 Difference]: Finished difference Result 68480 states and 77436 transitions. [2024-10-23 21:30:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:39,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 332 [2024-10-23 21:30:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:39,694 INFO L225 Difference]: With dead ends: 68480 [2024-10-23 21:30:39,694 INFO L226 Difference]: Without dead ends: 40639 [2024-10-23 21:30:39,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 661 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:30:39,720 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 874 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:39,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 177 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:30:39,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40639 states. [2024-10-23 21:30:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40639 to 38511. [2024-10-23 21:30:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38511 states, 38510 states have (on average 1.133861334718255) internal successors, (43665), 38510 states have internal predecessors, (43665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38511 states to 38511 states and 43665 transitions. [2024-10-23 21:30:40,260 INFO L78 Accepts]: Start accepts. Automaton has 38511 states and 43665 transitions. Word has length 332 [2024-10-23 21:30:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:40,261 INFO L471 AbstractCegarLoop]: Abstraction has 38511 states and 43665 transitions. [2024-10-23 21:30:40,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 38511 states and 43665 transitions. [2024-10-23 21:30:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-10-23 21:30:40,277 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:40,278 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:40,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 21:30:40,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-23 21:30:40,479 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:40,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:40,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1069669604, now seen corresponding path program 1 times [2024-10-23 21:30:40,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:40,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000063029] [2024-10-23 21:30:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:40,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:40,750 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-23 21:30:40,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:40,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000063029] [2024-10-23 21:30:40,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000063029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:40,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:40,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:40,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213756645] [2024-10-23 21:30:40,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:40,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:40,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:40,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:40,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:40,753 INFO L87 Difference]: Start difference. First operand 38511 states and 43665 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:42,557 INFO L93 Difference]: Finished difference Result 89784 states and 102266 transitions. [2024-10-23 21:30:42,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:42,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 432 [2024-10-23 21:30:42,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:42,730 INFO L225 Difference]: With dead ends: 89784 [2024-10-23 21:30:42,731 INFO L226 Difference]: Without dead ends: 49572 [2024-10-23 21:30:42,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:42,747 INFO L432 NwaCegarLoop]: 726 mSDtfsCounter, 338 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:42,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 784 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:30:42,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49572 states. [2024-10-23 21:30:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49572 to 37618. [2024-10-23 21:30:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37618 states, 37617 states have (on average 1.1327325411383151) internal successors, (42610), 37617 states have internal predecessors, (42610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:43,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37618 states to 37618 states and 42610 transitions. [2024-10-23 21:30:43,272 INFO L78 Accepts]: Start accepts. Automaton has 37618 states and 42610 transitions. Word has length 432 [2024-10-23 21:30:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:43,273 INFO L471 AbstractCegarLoop]: Abstraction has 37618 states and 42610 transitions. [2024-10-23 21:30:43,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 37618 states and 42610 transitions. [2024-10-23 21:30:43,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-10-23 21:30:43,285 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:43,286 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:43,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:30:43,286 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:43,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash 482394593, now seen corresponding path program 1 times [2024-10-23 21:30:43,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:43,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735747431] [2024-10-23 21:30:43,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:43,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-10-23 21:30:43,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:43,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735747431] [2024-10-23 21:30:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735747431] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:43,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:43,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:43,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214529980] [2024-10-23 21:30:43,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:43,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:43,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:43,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:43,907 INFO L87 Difference]: Start difference. First operand 37618 states and 42610 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:45,690 INFO L93 Difference]: Finished difference Result 87613 states and 98820 transitions. [2024-10-23 21:30:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:45,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 433 [2024-10-23 21:30:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:45,737 INFO L225 Difference]: With dead ends: 87613 [2024-10-23 21:30:45,737 INFO L226 Difference]: Without dead ends: 49570 [2024-10-23 21:30:45,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:45,761 INFO L432 NwaCegarLoop]: 294 mSDtfsCounter, 453 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:45,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 346 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:30:45,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49570 states. [2024-10-23 21:30:46,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49570 to 38041. [2024-10-23 21:30:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38041 states, 38040 states have (on average 1.1311251314405888) internal successors, (43028), 38040 states have internal predecessors, (43028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38041 states to 38041 states and 43028 transitions. [2024-10-23 21:30:46,441 INFO L78 Accepts]: Start accepts. Automaton has 38041 states and 43028 transitions. Word has length 433 [2024-10-23 21:30:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:46,443 INFO L471 AbstractCegarLoop]: Abstraction has 38041 states and 43028 transitions. [2024-10-23 21:30:46,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 38041 states and 43028 transitions. [2024-10-23 21:30:46,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-10-23 21:30:46,453 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:46,454 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:46,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:30:46,455 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:46,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:46,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1814589054, now seen corresponding path program 1 times [2024-10-23 21:30:46,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:46,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720804486] [2024-10-23 21:30:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:46,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-10-23 21:30:46,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:46,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720804486] [2024-10-23 21:30:46,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720804486] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:46,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:46,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:46,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821147541] [2024-10-23 21:30:46,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:46,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:46,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:46,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:46,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:46,960 INFO L87 Difference]: Start difference. First operand 38041 states and 43028 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:48,629 INFO L93 Difference]: Finished difference Result 90133 states and 101692 transitions. [2024-10-23 21:30:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:48,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 460 [2024-10-23 21:30:48,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:48,681 INFO L225 Difference]: With dead ends: 90133 [2024-10-23 21:30:48,681 INFO L226 Difference]: Without dead ends: 51667 [2024-10-23 21:30:48,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:48,700 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 488 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:48,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 297 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:30:48,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51667 states. [2024-10-23 21:30:49,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51667 to 38440. [2024-10-23 21:30:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38440 states, 38439 states have (on average 1.120554645021983) internal successors, (43073), 38439 states have internal predecessors, (43073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38440 states to 38440 states and 43073 transitions. [2024-10-23 21:30:49,146 INFO L78 Accepts]: Start accepts. Automaton has 38440 states and 43073 transitions. Word has length 460 [2024-10-23 21:30:49,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:49,147 INFO L471 AbstractCegarLoop]: Abstraction has 38440 states and 43073 transitions. [2024-10-23 21:30:49,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:49,147 INFO L276 IsEmpty]: Start isEmpty. Operand 38440 states and 43073 transitions. [2024-10-23 21:30:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2024-10-23 21:30:49,158 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:49,158 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:49,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:30:49,158 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:49,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:49,159 INFO L85 PathProgramCache]: Analyzing trace with hash 615180713, now seen corresponding path program 1 times [2024-10-23 21:30:49,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:49,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132090864] [2024-10-23 21:30:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:49,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:50,147 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:30:50,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:50,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132090864] [2024-10-23 21:30:50,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132090864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:50,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:50,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:30:50,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658546640] [2024-10-23 21:30:50,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:50,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:50,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:50,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:50,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:50,151 INFO L87 Difference]: Start difference. First operand 38440 states and 43073 transitions. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:52,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:52,413 INFO L93 Difference]: Finished difference Result 88378 states and 98834 transitions. [2024-10-23 21:30:52,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:52,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 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 472 [2024-10-23 21:30:52,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:52,463 INFO L225 Difference]: With dead ends: 88378 [2024-10-23 21:30:52,463 INFO L226 Difference]: Without dead ends: 49514 [2024-10-23 21:30:52,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:52,488 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 877 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:52,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 303 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:30:52,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49514 states. [2024-10-23 21:30:52,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49514 to 46099. [2024-10-23 21:30:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46099 states, 46098 states have (on average 1.1141698121393553) internal successors, (51361), 46098 states have internal predecessors, (51361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:52,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46099 states to 46099 states and 51361 transitions. [2024-10-23 21:30:52,966 INFO L78 Accepts]: Start accepts. Automaton has 46099 states and 51361 transitions. Word has length 472 [2024-10-23 21:30:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:52,967 INFO L471 AbstractCegarLoop]: Abstraction has 46099 states and 51361 transitions. [2024-10-23 21:30:52,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 46099 states and 51361 transitions. [2024-10-23 21:30:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-10-23 21:30:52,980 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:52,980 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:52,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:30:52,980 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:52,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:52,981 INFO L85 PathProgramCache]: Analyzing trace with hash -119892235, now seen corresponding path program 1 times [2024-10-23 21:30:52,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:52,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897315487] [2024-10-23 21:30:52,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:52,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:30:53,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:53,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897315487] [2024-10-23 21:30:53,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897315487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:53,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:53,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:30:53,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898751008] [2024-10-23 21:30:53,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:53,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:30:53,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:53,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:30:53,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:53,344 INFO L87 Difference]: Start difference. First operand 46099 states and 51361 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:55,060 INFO L93 Difference]: Finished difference Result 99429 states and 110844 transitions. [2024-10-23 21:30:55,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:30:55,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 480 [2024-10-23 21:30:55,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:55,119 INFO L225 Difference]: With dead ends: 99429 [2024-10-23 21:30:55,119 INFO L226 Difference]: Without dead ends: 52905 [2024-10-23 21:30:55,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:30:55,149 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 474 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:55,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 254 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:30:55,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52905 states. [2024-10-23 21:30:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52905 to 49921. [2024-10-23 21:30:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49921 states, 49920 states have (on average 1.112540064102564) internal successors, (55538), 49920 states have internal predecessors, (55538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49921 states to 49921 states and 55538 transitions. [2024-10-23 21:30:55,781 INFO L78 Accepts]: Start accepts. Automaton has 49921 states and 55538 transitions. Word has length 480 [2024-10-23 21:30:55,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:30:55,781 INFO L471 AbstractCegarLoop]: Abstraction has 49921 states and 55538 transitions. [2024-10-23 21:30:55,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:30:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 49921 states and 55538 transitions. [2024-10-23 21:30:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-10-23 21:30:55,791 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:30:55,791 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:30:55,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:30:55,791 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:30:55,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:30:55,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1095902566, now seen corresponding path program 1 times [2024-10-23 21:30:55,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:30:55,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337747421] [2024-10-23 21:30:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:30:55,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:30:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:30:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-23 21:30:56,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:30:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337747421] [2024-10-23 21:30:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337747421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:30:56,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:30:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:30:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708347202] [2024-10-23 21:30:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:30:56,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:30:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:30:56,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:30:56,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:56,659 INFO L87 Difference]: Start difference. First operand 49921 states and 55538 transitions. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 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) [2024-10-23 21:30:59,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:30:59,289 INFO L93 Difference]: Finished difference Result 127551 states and 141062 transitions. [2024-10-23 21:30:59,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:30:59,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 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 481 [2024-10-23 21:30:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:30:59,365 INFO L225 Difference]: With dead ends: 127551 [2024-10-23 21:30:59,365 INFO L226 Difference]: Without dead ends: 73797 [2024-10-23 21:30:59,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:30:59,507 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 746 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:30:59,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 276 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:30:59,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73797 states. [2024-10-23 21:31:00,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73797 to 68226. [2024-10-23 21:31:00,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68226 states, 68225 states have (on average 1.1045511176255038) internal successors, (75358), 68225 states have internal predecessors, (75358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:00,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68226 states to 68226 states and 75358 transitions. [2024-10-23 21:31:00,536 INFO L78 Accepts]: Start accepts. Automaton has 68226 states and 75358 transitions. Word has length 481 [2024-10-23 21:31:00,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:00,536 INFO L471 AbstractCegarLoop]: Abstraction has 68226 states and 75358 transitions. [2024-10-23 21:31:00,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 4 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) [2024-10-23 21:31:00,536 INFO L276 IsEmpty]: Start isEmpty. Operand 68226 states and 75358 transitions. [2024-10-23 21:31:00,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-10-23 21:31:00,545 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:00,545 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:00,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:31:00,546 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:00,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:00,546 INFO L85 PathProgramCache]: Analyzing trace with hash -343265053, now seen corresponding path program 1 times [2024-10-23 21:31:00,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:00,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819299471] [2024-10-23 21:31:00,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:00,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:31:01,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:01,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819299471] [2024-10-23 21:31:01,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819299471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:01,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:01,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:31:01,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692750751] [2024-10-23 21:31:01,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:01,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:01,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:01,434 INFO L87 Difference]: Start difference. First operand 68226 states and 75358 transitions. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:03,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:03,746 INFO L93 Difference]: Finished difference Result 144968 states and 159656 transitions. [2024-10-23 21:31:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:31:03,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 485 [2024-10-23 21:31:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:03,819 INFO L225 Difference]: With dead ends: 144968 [2024-10-23 21:31:03,820 INFO L226 Difference]: Without dead ends: 76318 [2024-10-23 21:31:03,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:03,859 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 645 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 2641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:03,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 345 Invalid, 2641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:31:03,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76318 states. [2024-10-23 21:31:04,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76318 to 70351. [2024-10-23 21:31:04,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70351 states, 70350 states have (on average 1.1027007818052594) internal successors, (77575), 70350 states have internal predecessors, (77575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:04,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70351 states to 70351 states and 77575 transitions. [2024-10-23 21:31:04,632 INFO L78 Accepts]: Start accepts. Automaton has 70351 states and 77575 transitions. Word has length 485 [2024-10-23 21:31:04,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:04,632 INFO L471 AbstractCegarLoop]: Abstraction has 70351 states and 77575 transitions. [2024-10-23 21:31:04,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:04,632 INFO L276 IsEmpty]: Start isEmpty. Operand 70351 states and 77575 transitions. [2024-10-23 21:31:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2024-10-23 21:31:04,642 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:04,642 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:04,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:31:04,643 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:04,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash -75131185, now seen corresponding path program 1 times [2024-10-23 21:31:04,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:04,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466306017] [2024-10-23 21:31:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:04,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:31:05,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466306017] [2024-10-23 21:31:05,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466306017] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:05,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:05,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:31:05,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892056021] [2024-10-23 21:31:05,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:05,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:05,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:05,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:05,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:05,540 INFO L87 Difference]: Start difference. First operand 70351 states and 77575 transitions. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:08,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:08,196 INFO L93 Difference]: Finished difference Result 165421 states and 181961 transitions. [2024-10-23 21:31:08,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:31:08,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 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 493 [2024-10-23 21:31:08,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:08,302 INFO L225 Difference]: With dead ends: 165421 [2024-10-23 21:31:08,303 INFO L226 Difference]: Without dead ends: 95071 [2024-10-23 21:31:08,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:08,346 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 645 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:08,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 164 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 2319 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:31:08,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95071 states. [2024-10-23 21:31:09,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95071 to 91233. [2024-10-23 21:31:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91233 states, 91232 states have (on average 1.097334268677657) internal successors, (100112), 91232 states have internal predecessors, (100112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91233 states to 91233 states and 100112 transitions. [2024-10-23 21:31:09,324 INFO L78 Accepts]: Start accepts. Automaton has 91233 states and 100112 transitions. Word has length 493 [2024-10-23 21:31:09,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:09,324 INFO L471 AbstractCegarLoop]: Abstraction has 91233 states and 100112 transitions. [2024-10-23 21:31:09,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:09,324 INFO L276 IsEmpty]: Start isEmpty. Operand 91233 states and 100112 transitions. [2024-10-23 21:31:09,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2024-10-23 21:31:09,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:09,335 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:09,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-23 21:31:09,335 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:09,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:09,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1173360167, now seen corresponding path program 1 times [2024-10-23 21:31:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:09,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253903996] [2024-10-23 21:31:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:09,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:31:10,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:10,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253903996] [2024-10-23 21:31:10,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253903996] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:10,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:10,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:31:10,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276505826] [2024-10-23 21:31:10,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:10,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:31:10,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:10,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:31:10,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:10,694 INFO L87 Difference]: Start difference. First operand 91233 states and 100112 transitions. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:13,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:31:13,317 INFO L93 Difference]: Finished difference Result 200355 states and 219558 transitions. [2024-10-23 21:31:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:31:13,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 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 528 [2024-10-23 21:31:13,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:31:13,450 INFO L225 Difference]: With dead ends: 200355 [2024-10-23 21:31:13,450 INFO L226 Difference]: Without dead ends: 108698 [2024-10-23 21:31:13,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:31:13,477 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 871 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:31:13,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 262 Invalid, 2199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [412 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:31:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108698 states. [2024-10-23 21:31:14,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108698 to 95069. [2024-10-23 21:31:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95069 states, 95068 states have (on average 1.0965519417679976) internal successors, (104247), 95068 states have internal predecessors, (104247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95069 states to 95069 states and 104247 transitions. [2024-10-23 21:31:14,517 INFO L78 Accepts]: Start accepts. Automaton has 95069 states and 104247 transitions. Word has length 528 [2024-10-23 21:31:14,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:31:14,518 INFO L471 AbstractCegarLoop]: Abstraction has 95069 states and 104247 transitions. [2024-10-23 21:31:14,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:31:14,519 INFO L276 IsEmpty]: Start isEmpty. Operand 95069 states and 104247 transitions. [2024-10-23 21:31:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2024-10-23 21:31:14,529 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:31:14,530 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:31:14,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-23 21:31:14,530 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:31:14,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:31:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1108214213, now seen corresponding path program 1 times [2024-10-23 21:31:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:31:14,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442872537] [2024-10-23 21:31:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:31:14,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:31:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:31:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-23 21:31:15,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:31:15,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442872537] [2024-10-23 21:31:15,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442872537] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:31:15,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:31:15,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:31:15,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760043468] [2024-10-23 21:31:15,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:31:15,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:31:15,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:31:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:31:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:31:15,282 INFO L87 Difference]: Start difference. First operand 95069 states and 104247 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)