./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/eca-rers2012/Problem12_label24.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 24f3f57511ed23e7031a40e25f3e5030217322872173b78a17d5462480e8351a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 16:53:26,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 16:53:26,877 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 16:53:26,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 16:53:26,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 16:53:26,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 16:53:26,903 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 16:53:26,904 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 16:53:26,904 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 16:53:26,904 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 16:53:26,905 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 16:53:26,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 16:53:26,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 16:53:26,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 16:53:26,906 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 16:53:26,906 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 16:53:26,906 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 16:53:26,906 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 16:53:26,907 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 16:53:26,907 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 16:53:26,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 16:53:26,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 16:53:26,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 16:53:26,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 16:53:26,910 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 16:53:26,910 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 16:53:26,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 16:53:26,911 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 16:53:26,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 16:53:26,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 16:53:26,911 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 16:53:26,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 16:53:26,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 16:53:26,912 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 16:53:26,912 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 16:53:26,912 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 16:53:26,912 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 16:53:26,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 16:53:26,913 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 16:53:26,913 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 16:53:26,914 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 16:53:26,914 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 16:53:26,915 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24f3f57511ed23e7031a40e25f3e5030217322872173b78a17d5462480e8351a [2024-11-11 16:53:27,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 16:53:27,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 16:53:27,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 16:53:27,126 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 16:53:27,126 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 16:53:27,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label24.c [2024-11-11 16:53:28,351 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 16:53:28,666 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 16:53:28,667 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label24.c [2024-11-11 16:53:28,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4d678b5/1a45485e4c154fbb9a201b112979e9a1/FLAG47e283f33 [2024-11-11 16:53:28,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb4d678b5/1a45485e4c154fbb9a201b112979e9a1 [2024-11-11 16:53:28,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 16:53:28,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 16:53:28,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 16:53:28,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 16:53:28,717 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 16:53:28,718 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 04:53:28" (1/1) ... [2024-11-11 16:53:28,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4386ac66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:28, skipping insertion in model container [2024-11-11 16:53:28,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 04:53:28" (1/1) ... [2024-11-11 16:53:28,801 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 16:53:29,015 WARN L250 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/Problem12_label24.c[5810,5823] [2024-11-11 16:53:29,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 16:53:29,606 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 16:53:29,625 WARN L250 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/Problem12_label24.c[5810,5823] [2024-11-11 16:53:29,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 16:53:29,962 INFO L204 MainTranslator]: Completed translation [2024-11-11 16:53:29,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29 WrapperNode [2024-11-11 16:53:29,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 16:53:29,963 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 16:53:29,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 16:53:29,964 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 16:53:29,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,007 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,234 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-11 16:53:30,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 16:53:30,235 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 16:53:30,235 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 16:53:30,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 16:53:30,243 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,403 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]. [2024-11-11 16:53:30,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,503 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 16:53:30,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 16:53:30,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 16:53:30,597 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 16:53:30,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (1/1) ... [2024-11-11 16:53:30,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 16:53:30,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:53:30,626 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) [2024-11-11 16:53:30,628 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 [2024-11-11 16:53:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 16:53:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 16:53:30,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 16:53:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 16:53:30,717 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 16:53:30,719 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 16:53:33,720 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-11 16:53:33,721 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 16:53:33,753 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 16:53:33,754 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-11 16:53:33,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 04:53:33 BoogieIcfgContainer [2024-11-11 16:53:33,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 16:53:33,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 16:53:33,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 16:53:33,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 16:53:33,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 04:53:28" (1/3) ... [2024-11-11 16:53:33,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b691c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 04:53:33, skipping insertion in model container [2024-11-11 16:53:33,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 04:53:29" (2/3) ... [2024-11-11 16:53:33,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b691c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 04:53:33, skipping insertion in model container [2024-11-11 16:53:33,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 04:53:33" (3/3) ... [2024-11-11 16:53:33,764 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label24.c [2024-11-11 16:53:33,776 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 16:53:33,777 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 16:53:33,885 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 16:53:33,892 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;@4ef8ed63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 16:53:33,892 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 16:53:33,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-11 16:53:33,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:53:33,907 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:53:33,907 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:53:33,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:53:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash 291089130, now seen corresponding path program 1 times [2024-11-11 16:53:33,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:53:33,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327089878] [2024-11-11 16:53:33,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:53:33,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:53:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:53:34,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:53:34,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:53:34,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327089878] [2024-11-11 16:53:34,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327089878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:53:34,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:53:34,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:53:34,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701111078] [2024-11-11 16:53:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:53:34,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:53:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:53:34,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:53:34,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:53:34,262 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:53:37,070 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2024-11-11 16:53:37,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:53:37,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-11 16:53:37,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:53:37,086 INFO L225 Difference]: With dead ends: 2388 [2024-11-11 16:53:37,086 INFO L226 Difference]: Without dead ends: 1506 [2024-11-11 16:53:37,091 INFO L434 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 [2024-11-11 16:53:37,093 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 851 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-11 16:53:37,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 156 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-11 16:53:37,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-11 16:53:37,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-11 16:53:37,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.8458471760797341) internal successors, (2778), 1505 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:37,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2778 transitions. [2024-11-11 16:53:37,176 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2778 transitions. Word has length 46 [2024-11-11 16:53:37,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:53:37,177 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 2778 transitions. [2024-11-11 16:53:37,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:37,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2778 transitions. [2024-11-11 16:53:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-11 16:53:37,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:53:37,181 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:53:37,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 16:53:37,182 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:53:37,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:53:37,183 INFO L85 PathProgramCache]: Analyzing trace with hash -715150946, now seen corresponding path program 1 times [2024-11-11 16:53:37,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:53:37,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15489613] [2024-11-11 16:53:37,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:53:37,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:53:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:53:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:53:37,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:53:37,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15489613] [2024-11-11 16:53:37,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15489613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:53:37,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:53:37,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 16:53:37,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587898399] [2024-11-11 16:53:37,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:53:37,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:53:37,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:53:37,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:53:37,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:53:37,331 INFO L87 Difference]: Start difference. First operand 1506 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:39,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:53:39,725 INFO L93 Difference]: Finished difference Result 3761 states and 6893 transitions. [2024-11-11 16:53:39,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:53:39,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2024-11-11 16:53:39,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:53:39,735 INFO L225 Difference]: With dead ends: 3761 [2024-11-11 16:53:39,735 INFO L226 Difference]: Without dead ends: 2257 [2024-11-11 16:53:39,738 INFO L434 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 [2024-11-11 16:53:39,739 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 780 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 864 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-11 16:53:39,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 448 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [864 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-11 16:53:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2024-11-11 16:53:39,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2257. [2024-11-11 16:53:39,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.4419326241134751) internal successors, (3253), 2256 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:39,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3253 transitions. [2024-11-11 16:53:39,773 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3253 transitions. Word has length 115 [2024-11-11 16:53:39,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:53:39,774 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3253 transitions. [2024-11-11 16:53:39,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 2 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3253 transitions. [2024-11-11 16:53:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-11 16:53:39,777 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:53:39,777 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:53:39,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 16:53:39,778 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:53:39,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:53:39,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1461296935, now seen corresponding path program 1 times [2024-11-11 16:53:39,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:53:39,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158550099] [2024-11-11 16:53:39,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:53:39,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:53:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:53:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:53:40,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:53:40,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158550099] [2024-11-11 16:53:40,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158550099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:53:40,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:53:40,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:53:40,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786142075] [2024-11-11 16:53:40,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:53:40,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 16:53:40,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:53:40,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 16:53:40,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 16:53:40,052 INFO L87 Difference]: Start difference. First operand 2257 states and 3253 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:42,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:53:42,703 INFO L93 Difference]: Finished difference Result 6804 states and 9792 transitions. [2024-11-11 16:53:42,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 16:53:42,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2024-11-11 16:53:42,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:53:42,715 INFO L225 Difference]: With dead ends: 6804 [2024-11-11 16:53:42,715 INFO L226 Difference]: Without dead ends: 4512 [2024-11-11 16:53:42,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 16:53:42,718 INFO L435 NwaCegarLoop]: 687 mSDtfsCounter, 705 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 3835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-11 16:53:42,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 702 Invalid, 3835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-11 16:53:42,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2024-11-11 16:53:42,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 4510. [2024-11-11 16:53:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.228210246174318) internal successors, (5538), 4509 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 5538 transitions. [2024-11-11 16:53:42,770 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 5538 transitions. Word has length 117 [2024-11-11 16:53:42,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:53:42,770 INFO L471 AbstractCegarLoop]: Abstraction has 4510 states and 5538 transitions. [2024-11-11 16:53:42,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 5538 transitions. [2024-11-11 16:53:42,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-11 16:53:42,778 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:53:42,778 INFO L218 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:53:42,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 16:53:42,779 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:53:42,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:53:42,779 INFO L85 PathProgramCache]: Analyzing trace with hash -618289703, now seen corresponding path program 1 times [2024-11-11 16:53:42,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:53:42,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434136648] [2024-11-11 16:53:42,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:53:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:53:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:53:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-11 16:53:43,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:53:43,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434136648] [2024-11-11 16:53:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434136648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:53:43,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:53:43,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:53:43,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226060108] [2024-11-11 16:53:43,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:53:43,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 16:53:43,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:53:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 16:53:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 16:53:43,152 INFO L87 Difference]: Start difference. First operand 4510 states and 5538 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:45,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:53:45,790 INFO L93 Difference]: Finished difference Result 11310 states and 14294 transitions. [2024-11-11 16:53:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 16:53:45,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 258 [2024-11-11 16:53:45,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:53:45,805 INFO L225 Difference]: With dead ends: 11310 [2024-11-11 16:53:45,805 INFO L226 Difference]: Without dead ends: 6765 [2024-11-11 16:53:45,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 16:53:45,815 INFO L435 NwaCegarLoop]: 311 mSDtfsCounter, 775 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3718 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 4260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-11 16:53:45,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 327 Invalid, 4260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3718 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-11 16:53:45,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6765 states. [2024-11-11 16:53:45,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6765 to 6763. [2024-11-11 16:53:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.199349304939367) internal successors, (8110), 6762 states have internal predecessors, (8110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 8110 transitions. [2024-11-11 16:53:45,920 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 8110 transitions. Word has length 258 [2024-11-11 16:53:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:53:45,922 INFO L471 AbstractCegarLoop]: Abstraction has 6763 states and 8110 transitions. [2024-11-11 16:53:45,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:45,922 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 8110 transitions. [2024-11-11 16:53:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-11 16:53:45,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:53:45,925 INFO L218 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:53:45,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-11 16:53:45,927 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:53:45,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:53:45,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1970090326, now seen corresponding path program 1 times [2024-11-11 16:53:45,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:53:45,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431584187] [2024-11-11 16:53:45,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:53:45,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:53:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:53:46,347 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-11 16:53:46,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:53:46,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431584187] [2024-11-11 16:53:46,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431584187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:53:46,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:53:46,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:53:46,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777052676] [2024-11-11 16:53:46,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:53:46,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 16:53:46,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:53:46,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 16:53:46,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 16:53:46,350 INFO L87 Difference]: Start difference. First operand 6763 states and 8110 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:53:49,480 INFO L93 Difference]: Finished difference Result 19534 states and 23543 transitions. [2024-11-11 16:53:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 16:53:49,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 259 [2024-11-11 16:53:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:53:49,517 INFO L225 Difference]: With dead ends: 19534 [2024-11-11 16:53:49,517 INFO L226 Difference]: Without dead ends: 12773 [2024-11-11 16:53:49,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-11 16:53:49,530 INFO L435 NwaCegarLoop]: 586 mSDtfsCounter, 2028 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 4472 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 5021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 4472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:53:49,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2028 Valid, 607 Invalid, 5021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 4472 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-11 16:53:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12773 states. [2024-11-11 16:53:49,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12773 to 12020. [2024-11-11 16:53:49,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12020 states, 12019 states have (on average 1.138031450203844) internal successors, (13678), 12019 states have internal predecessors, (13678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12020 states to 12020 states and 13678 transitions. [2024-11-11 16:53:49,673 INFO L78 Accepts]: Start accepts. Automaton has 12020 states and 13678 transitions. Word has length 259 [2024-11-11 16:53:49,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:53:49,673 INFO L471 AbstractCegarLoop]: Abstraction has 12020 states and 13678 transitions. [2024-11-11 16:53:49,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 12020 states and 13678 transitions. [2024-11-11 16:53:49,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-11 16:53:49,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:53:49,677 INFO L218 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, 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, 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] [2024-11-11 16:53:49,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-11 16:53:49,677 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:53:49,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:53:49,678 INFO L85 PathProgramCache]: Analyzing trace with hash 585528210, now seen corresponding path program 1 times [2024-11-11 16:53:49,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:53:49,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731151605] [2024-11-11 16:53:49,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:53:49,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:53:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:53:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-11 16:53:49,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:53:49,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731151605] [2024-11-11 16:53:49,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731151605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:53:49,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:53:49,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:53:49,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293554439] [2024-11-11 16:53:49,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:53:49,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:53:49,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:53:49,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:53:49,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:53:49,905 INFO L87 Difference]: Start difference. First operand 12020 states and 13678 transitions. Second operand has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:53:52,262 INFO L93 Difference]: Finished difference Result 33050 states and 37997 transitions. [2024-11-11 16:53:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:53:52,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 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 341 [2024-11-11 16:53:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:53:52,296 INFO L225 Difference]: With dead ends: 33050 [2024-11-11 16:53:52,297 INFO L226 Difference]: Without dead ends: 21032 [2024-11-11 16:53:52,312 INFO L434 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 [2024-11-11 16:53:52,313 INFO L435 NwaCegarLoop]: 1378 mSDtfsCounter, 667 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-11 16:53:52,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1386 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-11 16:53:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21032 states. [2024-11-11 16:53:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21032 to 18779. [2024-11-11 16:53:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.1468740014911065) internal successors, (21536), 18778 states have internal predecessors, (21536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 21536 transitions. [2024-11-11 16:53:52,596 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 21536 transitions. Word has length 341 [2024-11-11 16:53:52,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:53:52,597 INFO L471 AbstractCegarLoop]: Abstraction has 18779 states and 21536 transitions. [2024-11-11 16:53:52,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:52,597 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 21536 transitions. [2024-11-11 16:53:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-11 16:53:52,601 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:53:52,602 INFO L218 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, 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, 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] [2024-11-11 16:53:52,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-11 16:53:52,602 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:53:52,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:53:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash 330038920, now seen corresponding path program 1 times [2024-11-11 16:53:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:53:52,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361301845] [2024-11-11 16:53:52,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:53:52,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:53:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:53:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-11 16:53:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:53:52,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361301845] [2024-11-11 16:53:52,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361301845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:53:52,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:53:52,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:53:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501060449] [2024-11-11 16:53:52,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:53:52,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:53:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:53:52,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:53:52,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:53:52,792 INFO L87 Difference]: Start difference. First operand 18779 states and 21536 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:54,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:53:54,813 INFO L93 Difference]: Finished difference Result 45817 states and 53208 transitions. [2024-11-11 16:53:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:53:54,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 345 [2024-11-11 16:53:54,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:53:54,855 INFO L225 Difference]: With dead ends: 45817 [2024-11-11 16:53:54,856 INFO L226 Difference]: Without dead ends: 27040 [2024-11-11 16:53:54,872 INFO L434 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 [2024-11-11 16:53:54,874 INFO L435 NwaCegarLoop]: 1196 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 2671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-11 16:53:54,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1204 Invalid, 2671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-11 16:53:54,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27040 states. [2024-11-11 16:53:55,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27040 to 27040. [2024-11-11 16:53:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.1244128850919042) internal successors, (30403), 27039 states have internal predecessors, (30403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30403 transitions. [2024-11-11 16:53:55,365 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30403 transitions. Word has length 345 [2024-11-11 16:53:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:53:55,366 INFO L471 AbstractCegarLoop]: Abstraction has 27040 states and 30403 transitions. [2024-11-11 16:53:55,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30403 transitions. [2024-11-11 16:53:55,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-11 16:53:55,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:53:55,377 INFO L218 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-11 16:53:55,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-11 16:53:55,378 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:53:55,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:53:55,378 INFO L85 PathProgramCache]: Analyzing trace with hash -752967464, now seen corresponding path program 1 times [2024-11-11 16:53:55,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:53:55,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152821877] [2024-11-11 16:53:55,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:53:55,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:53:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:53:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-11 16:53:55,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:53:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152821877] [2024-11-11 16:53:55,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152821877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:53:55,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:53:55,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:53:55,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206555803] [2024-11-11 16:53:55,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:53:55,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:53:55,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:53:55,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:53:55,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:53:55,594 INFO L87 Difference]: Start difference. First operand 27040 states and 30403 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) [2024-11-11 16:53:57,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:53:57,778 INFO L93 Difference]: Finished difference Result 76608 states and 86496 transitions. [2024-11-11 16:53:57,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:53:57,779 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 377 [2024-11-11 16:53:57,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:53:57,830 INFO L225 Difference]: With dead ends: 76608 [2024-11-11 16:53:57,830 INFO L226 Difference]: Without dead ends: 46566 [2024-11-11 16:53:57,849 INFO L434 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 [2024-11-11 16:53:57,850 INFO L435 NwaCegarLoop]: 1286 mSDtfsCounter, 747 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2209 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:53:57,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1294 Invalid, 2820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2209 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-11 16:53:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46566 states. [2024-11-11 16:53:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46566 to 45064. [2024-11-11 16:53:58,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45064 states, 45063 states have (on average 1.0967090517719638) internal successors, (49421), 45063 states have internal predecessors, (49421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:53:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45064 states to 45064 states and 49421 transitions. [2024-11-11 16:53:58,229 INFO L78 Accepts]: Start accepts. Automaton has 45064 states and 49421 transitions. Word has length 377 [2024-11-11 16:53:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:53:58,230 INFO L471 AbstractCegarLoop]: Abstraction has 45064 states and 49421 transitions. [2024-11-11 16:53:58,230 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) [2024-11-11 16:53:58,230 INFO L276 IsEmpty]: Start isEmpty. Operand 45064 states and 49421 transitions. [2024-11-11 16:53:58,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-11 16:53:58,234 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:53:58,234 INFO L218 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, 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, 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] [2024-11-11 16:53:58,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-11 16:53:58,234 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:53:58,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:53:58,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1966451662, now seen corresponding path program 1 times [2024-11-11 16:53:58,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:53:58,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948827593] [2024-11-11 16:53:58,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:53:58,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:53:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:53:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-11 16:53:58,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:53:58,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948827593] [2024-11-11 16:53:58,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948827593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:53:58,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:53:58,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:53:58,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531435941] [2024-11-11 16:53:58,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:53:58,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:53:58,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:53:58,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:53:58,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:53:58,526 INFO L87 Difference]: Start difference. First operand 45064 states and 49421 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:54:00,697 INFO L93 Difference]: Finished difference Result 102893 states and 114220 transitions. [2024-11-11 16:54:00,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:54:00,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 384 [2024-11-11 16:54:00,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:54:00,758 INFO L225 Difference]: With dead ends: 102893 [2024-11-11 16:54:00,758 INFO L226 Difference]: Without dead ends: 57831 [2024-11-11 16:54:00,789 INFO L434 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 [2024-11-11 16:54:00,790 INFO L435 NwaCegarLoop]: 1264 mSDtfsCounter, 696 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-11 16:54:00,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1272 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-11 16:54:00,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57831 states. [2024-11-11 16:54:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57831 to 56329. [2024-11-11 16:54:01,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56329 states, 56328 states have (on average 1.093701178809828) internal successors, (61606), 56328 states have internal predecessors, (61606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56329 states to 56329 states and 61606 transitions. [2024-11-11 16:54:01,339 INFO L78 Accepts]: Start accepts. Automaton has 56329 states and 61606 transitions. Word has length 384 [2024-11-11 16:54:01,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:54:01,339 INFO L471 AbstractCegarLoop]: Abstraction has 56329 states and 61606 transitions. [2024-11-11 16:54:01,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:01,339 INFO L276 IsEmpty]: Start isEmpty. Operand 56329 states and 61606 transitions. [2024-11-11 16:54:01,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2024-11-11 16:54:01,348 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:54:01,348 INFO L218 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:54:01,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-11 16:54:01,348 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:54:01,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:54:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash -814398153, now seen corresponding path program 1 times [2024-11-11 16:54:01,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:54:01,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474520649] [2024-11-11 16:54:01,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:54:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:54:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:54:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-11 16:54:01,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:54:01,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474520649] [2024-11-11 16:54:01,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474520649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:54:01,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:54:01,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:54:01,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804149660] [2024-11-11 16:54:01,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:54:01,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:54:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:54:01,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:54:01,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:54:01,573 INFO L87 Difference]: Start difference. First operand 56329 states and 61606 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:54:04,042 INFO L93 Difference]: Finished difference Result 123921 states and 137092 transitions. [2024-11-11 16:54:04,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:54:04,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 406 [2024-11-11 16:54:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:54:04,120 INFO L225 Difference]: With dead ends: 123921 [2024-11-11 16:54:04,120 INFO L226 Difference]: Without dead ends: 67594 [2024-11-11 16:54:04,162 INFO L434 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 [2024-11-11 16:54:04,162 INFO L435 NwaCegarLoop]: 1254 mSDtfsCounter, 669 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:54:04,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1262 Invalid, 2658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-11 16:54:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67594 states. [2024-11-11 16:54:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67594 to 66092. [2024-11-11 16:54:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66092 states, 66091 states have (on average 1.0885445824696252) internal successors, (71943), 66091 states have internal predecessors, (71943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66092 states to 66092 states and 71943 transitions. [2024-11-11 16:54:04,933 INFO L78 Accepts]: Start accepts. Automaton has 66092 states and 71943 transitions. Word has length 406 [2024-11-11 16:54:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:54:04,933 INFO L471 AbstractCegarLoop]: Abstraction has 66092 states and 71943 transitions. [2024-11-11 16:54:04,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 66092 states and 71943 transitions. [2024-11-11 16:54:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-11 16:54:04,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:54:04,940 INFO L218 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, 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, 3, 3, 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] [2024-11-11 16:54:04,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-11 16:54:04,940 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:54:04,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:54:04,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1327386509, now seen corresponding path program 1 times [2024-11-11 16:54:04,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:54:04,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317090889] [2024-11-11 16:54:04,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:54:04,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:54:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:54:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-11-11 16:54:05,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:54:05,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317090889] [2024-11-11 16:54:05,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317090889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:54:05,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:54:05,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:54:05,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785527948] [2024-11-11 16:54:05,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:54:05,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:54:05,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:54:05,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:54:05,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:54:05,159 INFO L87 Difference]: Start difference. First operand 66092 states and 71943 transitions. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:07,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:54:07,761 INFO L93 Difference]: Finished difference Result 158467 states and 173233 transitions. [2024-11-11 16:54:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:54:07,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 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 467 [2024-11-11 16:54:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:54:07,861 INFO L225 Difference]: With dead ends: 158467 [2024-11-11 16:54:07,861 INFO L226 Difference]: Without dead ends: 92377 [2024-11-11 16:54:07,897 INFO L434 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 [2024-11-11 16:54:07,897 INFO L435 NwaCegarLoop]: 1118 mSDtfsCounter, 687 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2358 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 2358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-11 16:54:07,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1126 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 2358 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-11 16:54:07,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92377 states. [2024-11-11 16:54:08,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92377 to 89373. [2024-11-11 16:54:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89373 states, 89372 states have (on average 1.0880924674394665) internal successors, (97245), 89372 states have internal predecessors, (97245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89373 states to 89373 states and 97245 transitions. [2024-11-11 16:54:08,860 INFO L78 Accepts]: Start accepts. Automaton has 89373 states and 97245 transitions. Word has length 467 [2024-11-11 16:54:08,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:54:08,861 INFO L471 AbstractCegarLoop]: Abstraction has 89373 states and 97245 transitions. [2024-11-11 16:54:08,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 89373 states and 97245 transitions. [2024-11-11 16:54:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-11-11 16:54:09,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:54:09,091 INFO L218 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:54:09,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-11 16:54:09,091 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:54:09,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:54:09,092 INFO L85 PathProgramCache]: Analyzing trace with hash -628998444, now seen corresponding path program 1 times [2024-11-11 16:54:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:54:09,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764539963] [2024-11-11 16:54:09,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:54:09,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:54:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:54:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 420 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 16:54:10,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:54:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764539963] [2024-11-11 16:54:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764539963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:54:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843414757] [2024-11-11 16:54:10,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:54:10,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:54:10,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:54:10,310 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) [2024-11-11 16:54:10,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 16:54:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:54:10,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 16:54:10,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:54:10,962 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-11 16:54:10,963 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:54:10,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843414757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:54:10,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:54:10,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-11 16:54:10,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602233176] [2024-11-11 16:54:10,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:54:10,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 16:54:10,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:54:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 16:54:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-11 16:54:10,965 INFO L87 Difference]: Start difference. First operand 89373 states and 97245 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:14,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:54:14,828 INFO L93 Difference]: Finished difference Result 271870 states and 296689 transitions. [2024-11-11 16:54:14,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 16:54:14,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 [2024-11-11 16:54:14,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:54:15,017 INFO L225 Difference]: With dead ends: 271870 [2024-11-11 16:54:15,018 INFO L226 Difference]: Without dead ends: 182499 [2024-11-11 16:54:15,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-11 16:54:15,087 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 1765 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4852 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 5379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 4852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-11 16:54:15,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 35 Invalid, 5379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 4852 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-11 16:54:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182499 states. [2024-11-11 16:54:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182499 to 180995. [2024-11-11 16:54:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180995 states, 180994 states have (on average 1.0892460523553267) internal successors, (197147), 180994 states have internal predecessors, (197147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180995 states to 180995 states and 197147 transitions. [2024-11-11 16:54:17,578 INFO L78 Accepts]: Start accepts. Automaton has 180995 states and 197147 transitions. Word has length 481 [2024-11-11 16:54:17,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:54:17,578 INFO L471 AbstractCegarLoop]: Abstraction has 180995 states and 197147 transitions. [2024-11-11 16:54:17,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 180995 states and 197147 transitions. [2024-11-11 16:54:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2024-11-11 16:54:17,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:54:17,599 INFO L218 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:54:17,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 16:54:17,800 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,SelfDestructingSolverStorable11 [2024-11-11 16:54:17,801 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:54:17,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:54:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1232615553, now seen corresponding path program 1 times [2024-11-11 16:54:17,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:54:17,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938505080] [2024-11-11 16:54:17,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:54:17,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:54:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:54:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 405 proven. 108 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2024-11-11 16:54:18,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:54:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938505080] [2024-11-11 16:54:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938505080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 16:54:18,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022434530] [2024-11-11 16:54:18,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:54:18,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 16:54:18,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 16:54:18,778 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) [2024-11-11 16:54:18,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 16:54:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:54:18,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-11 16:54:18,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 16:54:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 449 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2024-11-11 16:54:19,011 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 16:54:19,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022434530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:54:19,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 16:54:19,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-11 16:54:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795329306] [2024-11-11 16:54:19,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:54:19,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:54:19,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:54:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:54:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 16:54:19,017 INFO L87 Difference]: Start difference. First operand 180995 states and 197147 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:21,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:54:21,743 INFO L93 Difference]: Finished difference Result 361988 states and 394292 transitions. [2024-11-11 16:54:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:54:21,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 527 [2024-11-11 16:54:21,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:54:21,951 INFO L225 Difference]: With dead ends: 361988 [2024-11-11 16:54:21,951 INFO L226 Difference]: Without dead ends: 180995 [2024-11-11 16:54:22,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-11 16:54:22,030 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 720 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 2685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-11 16:54:22,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 398 Invalid, 2685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-11 16:54:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180995 states. [2024-11-11 16:54:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180995 to 174236. [2024-11-11 16:54:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174236 states, 174235 states have (on average 1.0601773466869457) internal successors, (184720), 174235 states have internal predecessors, (184720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174236 states to 174236 states and 184720 transitions. [2024-11-11 16:54:24,155 INFO L78 Accepts]: Start accepts. Automaton has 174236 states and 184720 transitions. Word has length 527 [2024-11-11 16:54:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:54:24,156 INFO L471 AbstractCegarLoop]: Abstraction has 174236 states and 184720 transitions. [2024-11-11 16:54:24,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 174236 states and 184720 transitions. [2024-11-11 16:54:24,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2024-11-11 16:54:24,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:54:24,176 INFO L218 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:54:24,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 16:54:24,376 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,SelfDestructingSolverStorable12 [2024-11-11 16:54:24,376 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:54:24,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:54:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1327579866, now seen corresponding path program 1 times [2024-11-11 16:54:24,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:54:24,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007921701] [2024-11-11 16:54:24,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:54:24,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:54:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:54:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 640 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-11 16:54:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:54:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007921701] [2024-11-11 16:54:25,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007921701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:54:25,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:54:25,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:54:25,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380551389] [2024-11-11 16:54:25,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:54:25,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:54:25,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:54:25,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:54:25,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:54:25,010 INFO L87 Difference]: Start difference. First operand 174236 states and 184720 transitions. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:28,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:54:28,370 INFO L93 Difference]: Finished difference Result 452108 states and 481356 transitions. [2024-11-11 16:54:28,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:54:28,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 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 616 [2024-11-11 16:54:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:54:28,713 INFO L225 Difference]: With dead ends: 452108 [2024-11-11 16:54:28,713 INFO L226 Difference]: Without dead ends: 277874 [2024-11-11 16:54:28,775 INFO L434 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 [2024-11-11 16:54:28,776 INFO L435 NwaCegarLoop]: 492 mSDtfsCounter, 533 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-11 16:54:28,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 498 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-11 16:54:28,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277874 states. [2024-11-11 16:54:31,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277874 to 274119. [2024-11-11 16:54:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274119 states, 274118 states have (on average 1.0566544334921457) internal successors, (289648), 274118 states have internal predecessors, (289648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274119 states to 274119 states and 289648 transitions. [2024-11-11 16:54:32,226 INFO L78 Accepts]: Start accepts. Automaton has 274119 states and 289648 transitions. Word has length 616 [2024-11-11 16:54:32,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:54:32,227 INFO L471 AbstractCegarLoop]: Abstraction has 274119 states and 289648 transitions. [2024-11-11 16:54:32,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:32,227 INFO L276 IsEmpty]: Start isEmpty. Operand 274119 states and 289648 transitions. [2024-11-11 16:54:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2024-11-11 16:54:32,257 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:54:32,257 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 16:54:32,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-11 16:54:32,257 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:54:32,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:54:32,258 INFO L85 PathProgramCache]: Analyzing trace with hash -242892076, now seen corresponding path program 1 times [2024-11-11 16:54:32,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:54:32,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122785035] [2024-11-11 16:54:32,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:54:32,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:54:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:54:32,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-11 16:54:32,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:54:32,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122785035] [2024-11-11 16:54:32,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122785035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:54:32,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:54:32,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:54:32,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047037362] [2024-11-11 16:54:32,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:54:32,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:54:32,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:54:32,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:54:32,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:54:32,778 INFO L87 Difference]: Start difference. First operand 274119 states and 289648 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:36,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:54:36,502 INFO L93 Difference]: Finished difference Result 621834 states and 659066 transitions. [2024-11-11 16:54:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:54:36,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 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 618 [2024-11-11 16:54:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:54:36,931 INFO L225 Difference]: With dead ends: 621834 [2024-11-11 16:54:36,931 INFO L226 Difference]: Without dead ends: 347717 [2024-11-11 16:54:37,067 INFO L434 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 [2024-11-11 16:54:37,067 INFO L435 NwaCegarLoop]: 1253 mSDtfsCounter, 691 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 2814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-11 16:54:37,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1261 Invalid, 2814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2298 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-11 16:54:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347717 states. [2024-11-11 16:54:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347717 to 329693. [2024-11-11 16:54:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329693 states, 329692 states have (on average 1.0516573043931912) internal successors, (346723), 329692 states have internal predecessors, (346723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329693 states to 329693 states and 346723 transitions. [2024-11-11 16:54:41,632 INFO L78 Accepts]: Start accepts. Automaton has 329693 states and 346723 transitions. Word has length 618 [2024-11-11 16:54:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 16:54:41,632 INFO L471 AbstractCegarLoop]: Abstraction has 329693 states and 346723 transitions. [2024-11-11 16:54:41,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 329693 states and 346723 transitions. [2024-11-11 16:54:41,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2024-11-11 16:54:41,649 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 16:54:41,649 INFO L218 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, 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, 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, 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] [2024-11-11 16:54:41,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-11 16:54:41,649 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 16:54:41,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 16:54:41,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1015993432, now seen corresponding path program 1 times [2024-11-11 16:54:41,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 16:54:41,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938673539] [2024-11-11 16:54:41,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 16:54:41,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 16:54:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 16:54:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 700 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2024-11-11 16:54:42,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 16:54:42,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938673539] [2024-11-11 16:54:42,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938673539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 16:54:42,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 16:54:42,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 16:54:42,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729515689] [2024-11-11 16:54:42,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 16:54:42,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 16:54:42,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 16:54:42,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 16:54:42,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 16:54:42,306 INFO L87 Difference]: Start difference. First operand 329693 states and 346723 transitions. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 16:54:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 16:54:45,664 INFO L93 Difference]: Finished difference Result 675906 states and 710346 transitions. [2024-11-11 16:54:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 16:54:45,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 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 663 [2024-11-11 16:54:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 16:54:46,104 INFO L225 Difference]: With dead ends: 675906 [2024-11-11 16:54:46,105 INFO L226 Difference]: Without dead ends: 346215 [2024-11-11 16:54:46,263 INFO L434 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 [2024-11-11 16:54:46,264 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 551 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-11 16:54:46,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 225 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-11 16:54:46,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346215 states.