./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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_label51.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 c7d97141912edf4d560524a4fad707a432ae86320ba1bcf5df7fccfaf2185109 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 11:17:50,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 11:17:50,867 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 11:17:50,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 11:17:50,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 11:17:50,886 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 11:17:50,887 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 11:17:50,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 11:17:50,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 11:17:50,888 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 11:17:50,888 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 11:17:50,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 11:17:50,902 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 11:17:50,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 11:17:50,904 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 11:17:50,904 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 11:17:50,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 11:17:50,905 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 11:17:50,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 11:17:50,905 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 11:17:50,905 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 11:17:50,906 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 11:17:50,906 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 11:17:50,906 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 11:17:50,907 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 11:17:50,907 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 11:17:50,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 11:17:50,907 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 11:17:50,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 11:17:50,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 11:17:50,908 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 11:17:50,908 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 11:17:50,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:17:50,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 11:17:50,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 11:17:50,909 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 11:17:50,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 11:17:50,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 11:17:50,910 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 11:17:50,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 11:17:50,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 11:17:50,910 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 11:17:50,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7d97141912edf4d560524a4fad707a432ae86320ba1bcf5df7fccfaf2185109 [2024-11-08 11:17:51,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 11:17:51,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 11:17:51,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 11:17:51,108 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 11:17:51,109 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 11:17:51,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label51.c [2024-11-08 11:17:52,472 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 11:17:52,770 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 11:17:52,771 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label51.c [2024-11-08 11:17:52,799 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fb8d4ed8/28a5b1f7203745df9550dc6594c3aa5b/FLAG5e09700eb [2024-11-08 11:17:53,023 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fb8d4ed8/28a5b1f7203745df9550dc6594c3aa5b [2024-11-08 11:17:53,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 11:17:53,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 11:17:53,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 11:17:53,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 11:17:53,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 11:17:53,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:17:53" (1/1) ... [2024-11-08 11:17:53,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2555dff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:53, skipping insertion in model container [2024-11-08 11:17:53,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:17:53" (1/1) ... [2024-11-08 11:17:53,249 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 11:17:53,551 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_label51.c[1794,1807] [2024-11-08 11:17:54,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:17:54,599 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 11:17:54,614 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_label51.c[1794,1807] [2024-11-08 11:17:54,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 11:17:54,934 INFO L204 MainTranslator]: Completed translation [2024-11-08 11:17:54,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54 WrapperNode [2024-11-08 11:17:54,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 11:17:54,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 11:17:54,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 11:17:54,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 11:17:54,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:54,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:55,286 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-11-08 11:17:55,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 11:17:55,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 11:17:55,287 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 11:17:55,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 11:17:55,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:55,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:55,346 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:55,475 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]. [2024-11-08 11:17:55,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:55,476 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:55,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:55,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:55,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:55,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:55,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 11:17:55,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 11:17:55,714 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 11:17:55,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 11:17:55,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (1/1) ... [2024-11-08 11:17:55,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 11:17:55,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:17:55,749 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) [2024-11-08 11:17:55,751 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 [2024-11-08 11:17:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 11:17:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 11:17:55,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 11:17:55,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 11:17:55,840 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 11:17:55,841 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 11:17:58,812 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-11-08 11:17:58,812 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 11:17:58,834 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 11:17:58,834 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 11:17:58,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:17:58 BoogieIcfgContainer [2024-11-08 11:17:58,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 11:17:58,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 11:17:58,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 11:17:58,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 11:17:58,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 11:17:53" (1/3) ... [2024-11-08 11:17:58,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644ed949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:17:58, skipping insertion in model container [2024-11-08 11:17:58,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:17:54" (2/3) ... [2024-11-08 11:17:58,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644ed949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 11:17:58, skipping insertion in model container [2024-11-08 11:17:58,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:17:58" (3/3) ... [2024-11-08 11:17:58,840 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label51.c [2024-11-08 11:17:58,851 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 11:17:58,851 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 11:17:58,904 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 11:17:58,909 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;@78c58c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 11:17:58,909 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 11:17:58,914 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) [2024-11-08 11:17:58,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 11:17:58,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:17:58,919 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:17:58,919 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:17:58,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:17:58,923 INFO L85 PathProgramCache]: Analyzing trace with hash -988188511, now seen corresponding path program 1 times [2024-11-08 11:17:58,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:17:58,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803955713] [2024-11-08 11:17:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:17:58,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:17:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:17:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:17:59,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:17:59,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803955713] [2024-11-08 11:17:59,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803955713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:17:59,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:17:59,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:17:59,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095859114] [2024-11-08 11:17:59,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:17:59,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:17:59,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:17:59,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:17:59,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:17:59,155 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 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:04,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:04,153 INFO L93 Difference]: Finished difference Result 3155 states and 6150 transitions. [2024-11-08 11:18:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 11:18:04,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-08 11:18:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:04,176 INFO L225 Difference]: With dead ends: 3155 [2024-11-08 11:18:04,176 INFO L226 Difference]: Without dead ends: 2265 [2024-11-08 11:18:04,182 INFO L431 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 [2024-11-08 11:18:04,184 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 2474 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 1719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 5453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1719 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:04,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 234 Invalid, 5453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1719 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-08 11:18:04,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2024-11-08 11:18:04,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2257. [2024-11-08 11:18:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5350177304964538) internal successors, (3463), 2256 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3463 transitions. [2024-11-08 11:18:04,279 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3463 transitions. Word has length 11 [2024-11-08 11:18:04,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:04,280 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3463 transitions. [2024-11-08 11:18:04,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:04,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3463 transitions. [2024-11-08 11:18:04,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-08 11:18:04,288 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:04,288 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:18:04,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 11:18:04,289 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:04,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:04,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1639014020, now seen corresponding path program 1 times [2024-11-08 11:18:04,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:04,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914690787] [2024-11-08 11:18:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:04,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:04,778 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:18:04,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:04,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914690787] [2024-11-08 11:18:04,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914690787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:04,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:04,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:04,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294381502] [2024-11-08 11:18:04,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:04,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:18:04,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:04,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:18:04,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:18:04,783 INFO L87 Difference]: Start difference. First operand 2257 states and 3463 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:08,366 INFO L93 Difference]: Finished difference Result 6051 states and 9664 transitions. [2024-11-08 11:18:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:18:08,368 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2024-11-08 11:18:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:08,380 INFO L225 Difference]: With dead ends: 6051 [2024-11-08 11:18:08,380 INFO L226 Difference]: Without dead ends: 3759 [2024-11-08 11:18:08,384 INFO L431 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 [2024-11-08 11:18:08,384 INFO L432 NwaCegarLoop]: 694 mSDtfsCounter, 702 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:08,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 708 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-08 11:18:08,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2024-11-08 11:18:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2024-11-08 11:18:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.3408728046833422) internal successors, (5039), 3758 states have internal predecessors, (5039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5039 transitions. [2024-11-08 11:18:08,424 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5039 transitions. Word has length 151 [2024-11-08 11:18:08,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:08,425 INFO L471 AbstractCegarLoop]: Abstraction has 3759 states and 5039 transitions. [2024-11-08 11:18:08,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:08,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5039 transitions. [2024-11-08 11:18:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-08 11:18:08,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:08,429 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:18:08,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 11:18:08,430 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:08,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1288793869, now seen corresponding path program 1 times [2024-11-08 11:18:08,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:08,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145281501] [2024-11-08 11:18:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:08,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-08 11:18:08,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:08,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145281501] [2024-11-08 11:18:08,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145281501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:08,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:08,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 11:18:08,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199086246] [2024-11-08 11:18:08,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:08,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:08,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:08,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:08,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:08,633 INFO L87 Difference]: Start difference. First operand 3759 states and 5039 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:10,976 INFO L93 Difference]: Finished difference Result 10520 states and 14356 transitions. [2024-11-08 11:18:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:10,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 221 [2024-11-08 11:18:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:10,993 INFO L225 Difference]: With dead ends: 10520 [2024-11-08 11:18:10,993 INFO L226 Difference]: Without dead ends: 6763 [2024-11-08 11:18:10,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:10,999 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:10,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 486 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 11:18:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2024-11-08 11:18:11,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6012. [2024-11-08 11:18:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.2814839460988188) internal successors, (7703), 6011 states have internal predecessors, (7703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:11,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 7703 transitions. [2024-11-08 11:18:11,067 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 7703 transitions. Word has length 221 [2024-11-08 11:18:11,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:11,068 INFO L471 AbstractCegarLoop]: Abstraction has 6012 states and 7703 transitions. [2024-11-08 11:18:11,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 7703 transitions. [2024-11-08 11:18:11,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2024-11-08 11:18:11,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:11,071 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:18:11,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 11:18:11,071 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:11,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash 204077554, now seen corresponding path program 1 times [2024-11-08 11:18:11,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:11,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862525113] [2024-11-08 11:18:11,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 17 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 11:18:11,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:11,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862525113] [2024-11-08 11:18:11,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862525113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:18:11,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109124044] [2024-11-08 11:18:11,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:11,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:18:11,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:18:11,398 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) [2024-11-08 11:18:11,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 11:18:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:11,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:18:11,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:18:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 11:18:11,629 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:18:11,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109124044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:11,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:18:11,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-08 11:18:11,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743742493] [2024-11-08 11:18:11,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:11,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:11,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:11,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:11,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:18:11,631 INFO L87 Difference]: Start difference. First operand 6012 states and 7703 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:14,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:14,105 INFO L93 Difference]: Finished difference Result 15026 states and 19934 transitions. [2024-11-08 11:18:14,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:14,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2024-11-08 11:18:14,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:14,126 INFO L225 Difference]: With dead ends: 15026 [2024-11-08 11:18:14,127 INFO L226 Difference]: Without dead ends: 9016 [2024-11-08 11:18:14,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:18:14,133 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 908 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:14,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 309 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 11:18:14,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2024-11-08 11:18:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 9016. [2024-11-08 11:18:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 9015 states have (on average 1.2657792567942319) internal successors, (11411), 9015 states have internal predecessors, (11411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 11411 transitions. [2024-11-08 11:18:14,214 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 11411 transitions. Word has length 234 [2024-11-08 11:18:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:14,214 INFO L471 AbstractCegarLoop]: Abstraction has 9016 states and 11411 transitions. [2024-11-08 11:18:14,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:14,215 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 11411 transitions. [2024-11-08 11:18:14,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-08 11:18:14,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:14,216 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:18:14,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 11:18:14,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:18:14,421 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:14,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:14,421 INFO L85 PathProgramCache]: Analyzing trace with hash 740515512, now seen corresponding path program 1 times [2024-11-08 11:18:14,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:14,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379878408] [2024-11-08 11:18:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:14,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-08 11:18:14,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:14,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379878408] [2024-11-08 11:18:14,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379878408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:14,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:14,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:14,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297191769] [2024-11-08 11:18:14,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:14,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:14,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:14,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:14,720 INFO L87 Difference]: Start difference. First operand 9016 states and 11411 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:17,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:17,319 INFO L93 Difference]: Finished difference Result 21785 states and 27827 transitions. [2024-11-08 11:18:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:17,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 251 [2024-11-08 11:18:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:17,343 INFO L225 Difference]: With dead ends: 21785 [2024-11-08 11:18:17,343 INFO L226 Difference]: Without dead ends: 12771 [2024-11-08 11:18:17,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:17,351 INFO L432 NwaCegarLoop]: 1208 mSDtfsCounter, 764 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:17,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1216 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 11:18:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2024-11-08 11:18:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 12771. [2024-11-08 11:18:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12771 states, 12770 states have (on average 1.183868441660141) internal successors, (15118), 12770 states have internal predecessors, (15118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 15118 transitions. [2024-11-08 11:18:17,465 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 15118 transitions. Word has length 251 [2024-11-08 11:18:17,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:17,465 INFO L471 AbstractCegarLoop]: Abstraction has 12771 states and 15118 transitions. [2024-11-08 11:18:17,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:17,469 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 15118 transitions. [2024-11-08 11:18:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-08 11:18:17,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:17,475 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:18:17,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 11:18:17,475 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:17,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:17,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1278477418, now seen corresponding path program 1 times [2024-11-08 11:18:17,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:17,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631080214] [2024-11-08 11:18:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:17,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 11:18:17,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:17,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631080214] [2024-11-08 11:18:17,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631080214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:17,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:17,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:17,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324174102] [2024-11-08 11:18:17,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:17,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:17,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:17,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:17,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:17,734 INFO L87 Difference]: Start difference. First operand 12771 states and 15118 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:20,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:20,217 INFO L93 Difference]: Finished difference Result 36054 states and 43062 transitions. [2024-11-08 11:18:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:20,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 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 338 [2024-11-08 11:18:20,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:20,260 INFO L225 Difference]: With dead ends: 36054 [2024-11-08 11:18:20,260 INFO L226 Difference]: Without dead ends: 23285 [2024-11-08 11:18:20,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:20,275 INFO L432 NwaCegarLoop]: 1215 mSDtfsCounter, 639 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:20,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1223 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 11:18:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23285 states. [2024-11-08 11:18:20,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23285 to 22534. [2024-11-08 11:18:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.1720143789109307) internal successors, (26409), 22533 states have internal predecessors, (26409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 26409 transitions. [2024-11-08 11:18:20,454 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 26409 transitions. Word has length 338 [2024-11-08 11:18:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:20,455 INFO L471 AbstractCegarLoop]: Abstraction has 22534 states and 26409 transitions. [2024-11-08 11:18:20,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 26409 transitions. [2024-11-08 11:18:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-08 11:18:20,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:20,460 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:18:20,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 11:18:20,460 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:20,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:20,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1344940876, now seen corresponding path program 1 times [2024-11-08 11:18:20,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:20,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605070153] [2024-11-08 11:18:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:20,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-08 11:18:20,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:20,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605070153] [2024-11-08 11:18:20,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605070153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:20,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:20,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:20,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014438720] [2024-11-08 11:18:20,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:20,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:20,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:20,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:20,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:20,888 INFO L87 Difference]: Start difference. First operand 22534 states and 26409 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:22,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:22,942 INFO L93 Difference]: Finished difference Result 51074 states and 59608 transitions. [2024-11-08 11:18:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:22,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 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 342 [2024-11-08 11:18:22,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:22,969 INFO L225 Difference]: With dead ends: 51074 [2024-11-08 11:18:22,969 INFO L226 Difference]: Without dead ends: 28542 [2024-11-08 11:18:22,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:22,981 INFO L432 NwaCegarLoop]: 961 mSDtfsCounter, 829 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:22,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 969 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-08 11:18:22,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28542 states. [2024-11-08 11:18:23,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28542 to 27040. [2024-11-08 11:18:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.144716890417545) internal successors, (30952), 27039 states have internal predecessors, (30952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:23,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30952 transitions. [2024-11-08 11:18:23,193 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30952 transitions. Word has length 342 [2024-11-08 11:18:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:23,194 INFO L471 AbstractCegarLoop]: Abstraction has 27040 states and 30952 transitions. [2024-11-08 11:18:23,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:23,194 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30952 transitions. [2024-11-08 11:18:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2024-11-08 11:18:23,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:23,199 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:18:23,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 11:18:23,200 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:23,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:23,200 INFO L85 PathProgramCache]: Analyzing trace with hash -357694838, now seen corresponding path program 1 times [2024-11-08 11:18:23,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:23,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45518194] [2024-11-08 11:18:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:23,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-08 11:18:23,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:23,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45518194] [2024-11-08 11:18:23,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45518194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:23,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:23,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:23,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16811340] [2024-11-08 11:18:23,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:23,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:23,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:23,387 INFO L87 Difference]: Start difference. First operand 27040 states and 30952 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:25,958 INFO L93 Difference]: Finished difference Result 54829 states and 62659 transitions. [2024-11-08 11:18:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:25,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 444 [2024-11-08 11:18:25,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:25,986 INFO L225 Difference]: With dead ends: 54829 [2024-11-08 11:18:25,986 INFO L226 Difference]: Without dead ends: 27791 [2024-11-08 11:18:26,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:26,004 INFO L432 NwaCegarLoop]: 263 mSDtfsCounter, 663 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:26,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 269 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 11:18:26,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27791 states. [2024-11-08 11:18:26,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27791 to 27040. [2024-11-08 11:18:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.1338437072376937) internal successors, (30658), 27039 states have internal predecessors, (30658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30658 transitions. [2024-11-08 11:18:26,246 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30658 transitions. Word has length 444 [2024-11-08 11:18:26,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:26,246 INFO L471 AbstractCegarLoop]: Abstraction has 27040 states and 30658 transitions. [2024-11-08 11:18:26,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:26,247 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30658 transitions. [2024-11-08 11:18:26,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2024-11-08 11:18:26,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:26,252 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:18:26,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 11:18:26,252 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:26,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1671865206, now seen corresponding path program 1 times [2024-11-08 11:18:26,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:26,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615263042] [2024-11-08 11:18:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:26,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:26,596 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 261 proven. 230 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-08 11:18:26,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615263042] [2024-11-08 11:18:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615263042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:18:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519048290] [2024-11-08 11:18:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:26,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:18:26,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:18:26,598 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) [2024-11-08 11:18:26,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 11:18:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:26,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:18:26,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:18:26,996 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 11:18:27,003 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:18:27,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519048290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:27,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:18:27,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 11:18:27,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722088699] [2024-11-08 11:18:27,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:27,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:27,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:27,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:27,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:18:27,005 INFO L87 Difference]: Start difference. First operand 27040 states and 30658 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:29,677 INFO L93 Difference]: Finished difference Result 72102 states and 82464 transitions. [2024-11-08 11:18:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:29,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 455 [2024-11-08 11:18:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:29,726 INFO L225 Difference]: With dead ends: 72102 [2024-11-08 11:18:29,726 INFO L226 Difference]: Without dead ends: 45064 [2024-11-08 11:18:29,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 11:18:29,749 INFO L432 NwaCegarLoop]: 1046 mSDtfsCounter, 665 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:29,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1053 Invalid, 3054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-08 11:18:29,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45064 states. [2024-11-08 11:18:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45064 to 45064. [2024-11-08 11:18:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45064 states, 45063 states have (on average 1.141291081374964) internal successors, (51430), 45063 states have internal predecessors, (51430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45064 states to 45064 states and 51430 transitions. [2024-11-08 11:18:30,228 INFO L78 Accepts]: Start accepts. Automaton has 45064 states and 51430 transitions. Word has length 455 [2024-11-08 11:18:30,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:30,232 INFO L471 AbstractCegarLoop]: Abstraction has 45064 states and 51430 transitions. [2024-11-08 11:18:30,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 45064 states and 51430 transitions. [2024-11-08 11:18:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-11-08 11:18:30,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:30,243 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:18:30,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 11:18:30,444 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,SelfDestructingSolverStorable8 [2024-11-08 11:18:30,445 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:30,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:30,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1008289624, now seen corresponding path program 1 times [2024-11-08 11:18:30,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:30,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237011786] [2024-11-08 11:18:30,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:30,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-08 11:18:30,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:30,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237011786] [2024-11-08 11:18:30,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237011786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:30,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:30,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:30,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243272266] [2024-11-08 11:18:30,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:30,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:30,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:30,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:30,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:30,926 INFO L87 Difference]: Start difference. First operand 45064 states and 51430 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:33,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:33,483 INFO L93 Difference]: Finished difference Result 107399 states and 121876 transitions. [2024-11-08 11:18:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:33,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 464 [2024-11-08 11:18:33,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:33,548 INFO L225 Difference]: With dead ends: 107399 [2024-11-08 11:18:33,548 INFO L226 Difference]: Without dead ends: 61586 [2024-11-08 11:18:33,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:33,617 INFO L432 NwaCegarLoop]: 1067 mSDtfsCounter, 732 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:33,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1074 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-08 11:18:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61586 states. [2024-11-08 11:18:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61586 to 55578. [2024-11-08 11:18:34,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55578 states, 55577 states have (on average 1.1048275365708837) internal successors, (61403), 55577 states have internal predecessors, (61403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55578 states to 55578 states and 61403 transitions. [2024-11-08 11:18:34,372 INFO L78 Accepts]: Start accepts. Automaton has 55578 states and 61403 transitions. Word has length 464 [2024-11-08 11:18:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:34,373 INFO L471 AbstractCegarLoop]: Abstraction has 55578 states and 61403 transitions. [2024-11-08 11:18:34,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:34,373 INFO L276 IsEmpty]: Start isEmpty. Operand 55578 states and 61403 transitions. [2024-11-08 11:18:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-08 11:18:34,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:34,400 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:18:34,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 11:18:34,401 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:34,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:34,401 INFO L85 PathProgramCache]: Analyzing trace with hash 689872906, now seen corresponding path program 1 times [2024-11-08 11:18:34,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:34,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48290334] [2024-11-08 11:18:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:34,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-08 11:18:34,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:34,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48290334] [2024-11-08 11:18:34,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48290334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:34,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:34,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:34,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719174425] [2024-11-08 11:18:34,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:34,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:34,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:34,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:34,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:34,863 INFO L87 Difference]: Start difference. First operand 55578 states and 61403 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:37,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:37,969 INFO L93 Difference]: Finished difference Result 144198 states and 159788 transitions. [2024-11-08 11:18:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:37,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 515 [2024-11-08 11:18:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:38,075 INFO L225 Difference]: With dead ends: 144198 [2024-11-08 11:18:38,075 INFO L226 Difference]: Without dead ends: 89373 [2024-11-08 11:18:38,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:38,117 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 618 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:38,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 460 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-08 11:18:38,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89373 states. [2024-11-08 11:18:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89373 to 87871. [2024-11-08 11:18:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87871 states, 87870 states have (on average 1.0897575964493) internal successors, (95757), 87870 states have internal predecessors, (95757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87871 states to 87871 states and 95757 transitions. [2024-11-08 11:18:39,096 INFO L78 Accepts]: Start accepts. Automaton has 87871 states and 95757 transitions. Word has length 515 [2024-11-08 11:18:39,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:39,096 INFO L471 AbstractCegarLoop]: Abstraction has 87871 states and 95757 transitions. [2024-11-08 11:18:39,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 87871 states and 95757 transitions. [2024-11-08 11:18:39,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2024-11-08 11:18:39,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:39,106 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-08 11:18:39,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 11:18:39,106 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:39,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:39,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1940279612, now seen corresponding path program 1 times [2024-11-08 11:18:39,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:39,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386575687] [2024-11-08 11:18:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:39,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-08 11:18:40,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:40,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386575687] [2024-11-08 11:18:40,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386575687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:40,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:40,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:40,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129739861] [2024-11-08 11:18:40,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:40,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:40,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:40,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:40,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:40,027 INFO L87 Difference]: Start difference. First operand 87871 states and 95757 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:43,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:43,048 INFO L93 Difference]: Finished difference Result 195266 states and 213075 transitions. [2024-11-08 11:18:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:43,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 [2024-11-08 11:18:43,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:43,156 INFO L225 Difference]: With dead ends: 195266 [2024-11-08 11:18:43,156 INFO L226 Difference]: Without dead ends: 108148 [2024-11-08 11:18:43,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:43,176 INFO L432 NwaCegarLoop]: 1282 mSDtfsCounter, 581 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:43,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1290 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 11:18:43,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108148 states. [2024-11-08 11:18:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108148 to 105144. [2024-11-08 11:18:44,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105144 states, 105143 states have (on average 1.0826683659397203) internal successors, (113835), 105143 states have internal predecessors, (113835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:44,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105144 states to 105144 states and 113835 transitions. [2024-11-08 11:18:44,448 INFO L78 Accepts]: Start accepts. Automaton has 105144 states and 113835 transitions. Word has length 527 [2024-11-08 11:18:44,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:44,448 INFO L471 AbstractCegarLoop]: Abstraction has 105144 states and 113835 transitions. [2024-11-08 11:18:44,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 105144 states and 113835 transitions. [2024-11-08 11:18:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2024-11-08 11:18:44,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:44,462 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-08 11:18:44,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 11:18:44,462 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:44,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:44,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2553455, now seen corresponding path program 1 times [2024-11-08 11:18:44,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:44,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154324700] [2024-11-08 11:18:44,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:44,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:44,829 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-08 11:18:44,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:44,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154324700] [2024-11-08 11:18:44,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154324700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:44,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:44,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:44,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505215425] [2024-11-08 11:18:44,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:44,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:44,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:44,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:44,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:44,832 INFO L87 Difference]: Start difference. First operand 105144 states and 113835 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:47,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:47,405 INFO L93 Difference]: Finished difference Result 210286 states and 227772 transitions. [2024-11-08 11:18:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:47,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 573 [2024-11-08 11:18:47,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:47,533 INFO L225 Difference]: With dead ends: 210286 [2024-11-08 11:18:47,533 INFO L226 Difference]: Without dead ends: 105895 [2024-11-08 11:18:47,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:47,579 INFO L432 NwaCegarLoop]: 1108 mSDtfsCounter, 806 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:47,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1116 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-08 11:18:47,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105895 states. [2024-11-08 11:18:48,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105895 to 105895. [2024-11-08 11:18:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105895 states, 105894 states have (on average 1.070391145862844) internal successors, (113348), 105894 states have internal predecessors, (113348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105895 states to 105895 states and 113348 transitions. [2024-11-08 11:18:48,732 INFO L78 Accepts]: Start accepts. Automaton has 105895 states and 113348 transitions. Word has length 573 [2024-11-08 11:18:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:48,733 INFO L471 AbstractCegarLoop]: Abstraction has 105895 states and 113348 transitions. [2024-11-08 11:18:48,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:48,733 INFO L276 IsEmpty]: Start isEmpty. Operand 105895 states and 113348 transitions. [2024-11-08 11:18:48,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2024-11-08 11:18:48,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:48,933 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:18:48,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 11:18:48,933 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:48,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:48,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1602236886, now seen corresponding path program 1 times [2024-11-08 11:18:48,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:48,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353566078] [2024-11-08 11:18:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:48,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-08 11:18:49,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:49,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353566078] [2024-11-08 11:18:49,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353566078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:49,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:49,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:49,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738413751] [2024-11-08 11:18:49,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:49,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:49,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:49,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:49,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:49,729 INFO L87 Difference]: Start difference. First operand 105895 states and 113348 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:52,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:52,577 INFO L93 Difference]: Finished difference Result 214792 states and 229744 transitions. [2024-11-08 11:18:52,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:52,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 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 600 [2024-11-08 11:18:52,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:52,689 INFO L225 Difference]: With dead ends: 214792 [2024-11-08 11:18:52,689 INFO L226 Difference]: Without dead ends: 109650 [2024-11-08 11:18:52,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:52,745 INFO L432 NwaCegarLoop]: 1265 mSDtfsCounter, 591 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:52,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1273 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 11:18:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109650 states. [2024-11-08 11:18:53,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109650 to 106646. [2024-11-08 11:18:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106646 states, 106645 states have (on average 1.060518542829012) internal successors, (113099), 106645 states have internal predecessors, (113099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:54,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106646 states to 106646 states and 113099 transitions. [2024-11-08 11:18:54,007 INFO L78 Accepts]: Start accepts. Automaton has 106646 states and 113099 transitions. Word has length 600 [2024-11-08 11:18:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:54,007 INFO L471 AbstractCegarLoop]: Abstraction has 106646 states and 113099 transitions. [2024-11-08 11:18:54,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 106646 states and 113099 transitions. [2024-11-08 11:18:54,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2024-11-08 11:18:54,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:54,020 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-08 11:18:54,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 11:18:54,020 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:54,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:54,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1697512307, now seen corresponding path program 1 times [2024-11-08 11:18:54,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:54,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810640291] [2024-11-08 11:18:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:54,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:18:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 711 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-08 11:18:54,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:18:54,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810640291] [2024-11-08 11:18:54,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810640291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:18:54,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:18:54,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:18:54,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838597571] [2024-11-08 11:18:54,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:18:54,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:18:54,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:18:54,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:18:54,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:54,602 INFO L87 Difference]: Start difference. First operand 106646 states and 113099 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:57,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:18:57,209 INFO L93 Difference]: Finished difference Result 227559 states and 242182 transitions. [2024-11-08 11:18:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:18:57,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 622 [2024-11-08 11:18:57,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:18:57,364 INFO L225 Difference]: With dead ends: 227559 [2024-11-08 11:18:57,364 INFO L226 Difference]: Without dead ends: 121666 [2024-11-08 11:18:57,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:18:57,428 INFO L432 NwaCegarLoop]: 1286 mSDtfsCounter, 602 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:18:57,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1294 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 11:18:57,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121666 states. [2024-11-08 11:18:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121666 to 115658. [2024-11-08 11:18:58,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115658 states, 115657 states have (on average 1.0552063428932101) internal successors, (122042), 115657 states have internal predecessors, (122042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:59,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115658 states to 115658 states and 122042 transitions. [2024-11-08 11:18:59,136 INFO L78 Accepts]: Start accepts. Automaton has 115658 states and 122042 transitions. Word has length 622 [2024-11-08 11:18:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:18:59,137 INFO L471 AbstractCegarLoop]: Abstraction has 115658 states and 122042 transitions. [2024-11-08 11:18:59,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:18:59,137 INFO L276 IsEmpty]: Start isEmpty. Operand 115658 states and 122042 transitions. [2024-11-08 11:18:59,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2024-11-08 11:18:59,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:18:59,151 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-08 11:18:59,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 11:18:59,154 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:18:59,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:18:59,155 INFO L85 PathProgramCache]: Analyzing trace with hash 328629557, now seen corresponding path program 1 times [2024-11-08 11:18:59,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:18:59,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23572561] [2024-11-08 11:18:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:18:59,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:18:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 741 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 11:19:00,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:00,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23572561] [2024-11-08 11:19:00,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23572561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:00,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:00,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:19:00,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015300142] [2024-11-08 11:19:00,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:00,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:00,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:00,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:00,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:00,052 INFO L87 Difference]: Start difference. First operand 115658 states and 122042 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:02,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:02,897 INFO L93 Difference]: Finished difference Result 234318 states and 247183 transitions. [2024-11-08 11:19:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:02,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 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 637 [2024-11-08 11:19:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:03,020 INFO L225 Difference]: With dead ends: 234318 [2024-11-08 11:19:03,020 INFO L226 Difference]: Without dead ends: 119413 [2024-11-08 11:19:03,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:03,062 INFO L432 NwaCegarLoop]: 1335 mSDtfsCounter, 595 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:03,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1343 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 11:19:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states. [2024-11-08 11:19:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 117160. [2024-11-08 11:19:04,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117160 states, 117159 states have (on average 1.0535596923838544) internal successors, (123434), 117159 states have internal predecessors, (123434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:04,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117160 states to 117160 states and 123434 transitions. [2024-11-08 11:19:04,409 INFO L78 Accepts]: Start accepts. Automaton has 117160 states and 123434 transitions. Word has length 637 [2024-11-08 11:19:04,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:04,410 INFO L471 AbstractCegarLoop]: Abstraction has 117160 states and 123434 transitions. [2024-11-08 11:19:04,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 117160 states and 123434 transitions. [2024-11-08 11:19:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2024-11-08 11:19:04,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:04,421 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:04,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 11:19:04,422 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:04,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:04,422 INFO L85 PathProgramCache]: Analyzing trace with hash -984613049, now seen corresponding path program 1 times [2024-11-08 11:19:04,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:04,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437520840] [2024-11-08 11:19:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:04,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 953 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 11:19:05,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:05,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437520840] [2024-11-08 11:19:05,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437520840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:05,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:05,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 11:19:05,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023553707] [2024-11-08 11:19:05,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:05,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 11:19:05,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:05,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 11:19:05,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:19:05,214 INFO L87 Difference]: Start difference. First operand 117160 states and 123434 transitions. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:08,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:08,847 INFO L93 Difference]: Finished difference Result 243330 states and 256346 transitions. [2024-11-08 11:19:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 11:19:08,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 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 656 [2024-11-08 11:19:08,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:08,987 INFO L225 Difference]: With dead ends: 243330 [2024-11-08 11:19:08,987 INFO L226 Difference]: Without dead ends: 126172 [2024-11-08 11:19:09,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 11:19:09,047 INFO L432 NwaCegarLoop]: 1286 mSDtfsCounter, 1327 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 4221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:09,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1300 Invalid, 4221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 3954 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-08 11:19:09,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126172 states. [2024-11-08 11:19:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126172 to 126172. [2024-11-08 11:19:10,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126172 states, 126171 states have (on average 1.0508753992597348) internal successors, (132590), 126171 states have internal predecessors, (132590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126172 states to 126172 states and 132590 transitions. [2024-11-08 11:19:11,050 INFO L78 Accepts]: Start accepts. Automaton has 126172 states and 132590 transitions. Word has length 656 [2024-11-08 11:19:11,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:11,050 INFO L471 AbstractCegarLoop]: Abstraction has 126172 states and 132590 transitions. [2024-11-08 11:19:11,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 126172 states and 132590 transitions. [2024-11-08 11:19:11,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2024-11-08 11:19:11,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:11,066 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:11,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 11:19:11,067 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:11,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:11,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1541879315, now seen corresponding path program 1 times [2024-11-08 11:19:11,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:11,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959415184] [2024-11-08 11:19:11,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:11,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 453 proven. 108 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-08 11:19:12,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:12,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959415184] [2024-11-08 11:19:12,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959415184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 11:19:12,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064022280] [2024-11-08 11:19:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:12,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 11:19:12,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 11:19:12,035 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 11:19:12,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 11:19:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:12,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 11:19:12,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 11:19:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-11-08 11:19:12,406 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 11:19:12,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064022280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:12,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 11:19:12,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-08 11:19:12,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732923679] [2024-11-08 11:19:12,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:12,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:12,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:12,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:12,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:19:12,408 INFO L87 Difference]: Start difference. First operand 126172 states and 132590 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:15,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:15,022 INFO L93 Difference]: Finished difference Result 251591 states and 264422 transitions. [2024-11-08 11:19:15,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:15,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 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 744 [2024-11-08 11:19:15,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:15,165 INFO L225 Difference]: With dead ends: 251591 [2024-11-08 11:19:15,166 INFO L226 Difference]: Without dead ends: 126172 [2024-11-08 11:19:15,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 11:19:15,227 INFO L432 NwaCegarLoop]: 1310 mSDtfsCounter, 603 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 2409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:15,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 1318 Invalid, 2409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-08 11:19:15,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126172 states. [2024-11-08 11:19:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126172 to 120164. [2024-11-08 11:19:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120164 states, 120163 states have (on average 1.03839784293002) internal successors, (124777), 120163 states have internal predecessors, (124777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120164 states to 120164 states and 124777 transitions. [2024-11-08 11:19:16,365 INFO L78 Accepts]: Start accepts. Automaton has 120164 states and 124777 transitions. Word has length 744 [2024-11-08 11:19:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 11:19:16,366 INFO L471 AbstractCegarLoop]: Abstraction has 120164 states and 124777 transitions. [2024-11-08 11:19:16,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 120164 states and 124777 transitions. [2024-11-08 11:19:16,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2024-11-08 11:19:16,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 11:19:16,399 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 11:19:16,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 11:19:16,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 11:19:16,600 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 11:19:16,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 11:19:16,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1003159082, now seen corresponding path program 1 times [2024-11-08 11:19:16,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 11:19:16,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986849925] [2024-11-08 11:19:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 11:19:16,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 11:19:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 11:19:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1071 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2024-11-08 11:19:17,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 11:19:17,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986849925] [2024-11-08 11:19:17,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986849925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 11:19:17,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 11:19:17,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 11:19:17,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079201907] [2024-11-08 11:19:17,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 11:19:17,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 11:19:17,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 11:19:17,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 11:19:17,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:17,744 INFO L87 Difference]: Start difference. First operand 120164 states and 124777 transitions. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 11:19:21,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 11:19:21,012 INFO L93 Difference]: Finished difference Result 268864 states and 279675 transitions. [2024-11-08 11:19:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 11:19:21,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 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 945 [2024-11-08 11:19:21,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 11:19:21,158 INFO L225 Difference]: With dead ends: 268864 [2024-11-08 11:19:21,158 INFO L226 Difference]: Without dead ends: 149453 [2024-11-08 11:19:21,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 11:19:21,233 INFO L432 NwaCegarLoop]: 1271 mSDtfsCounter, 751 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2414 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-08 11:19:21,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1279 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2414 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-08 11:19:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149453 states.