./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label46.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label46.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 e6cfda55b4df00060532ae07426d70949a0fc78613832cd8fb2b21614956b3d6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:22:49,740 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:22:49,813 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:22:49,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:22:49,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:22:49,849 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:22:49,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:22:49,850 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:22:49,851 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:22:49,851 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:22:49,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:22:49,852 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:22:49,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:22:49,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:22:49,857 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:22:49,858 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:22:49,858 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:22:49,858 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:22:49,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:22:49,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:22:49,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:22:49,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:22:49,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:22:49,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:22:49,862 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:22:49,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:22:49,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:22:49,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:22:49,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:22:49,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:22:49,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:22:49,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:22:49,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:22:49,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:22:49,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:22:49,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:22:49,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:22:49,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:22:49,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:22:49,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:22:49,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:22:49,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:22:49,868 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6cfda55b4df00060532ae07426d70949a0fc78613832cd8fb2b21614956b3d6 [2024-10-23 21:22:50,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:22:50,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:22:50,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:22:50,168 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:22:50,169 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:22:50,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label46.c [2024-10-23 21:22:51,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:22:52,009 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:22:52,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label46.c [2024-10-23 21:22:52,035 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/367bb4162/6ac502f0dfea43259103d45b1ec38535/FLAG0596f825e [2024-10-23 21:22:52,056 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/367bb4162/6ac502f0dfea43259103d45b1ec38535 [2024-10-23 21:22:52,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:22:52,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:22:52,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:22:52,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:22:52,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:22:52,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:22:52" (1/1) ... [2024-10-23 21:22:52,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b634cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:52, skipping insertion in model container [2024-10-23 21:22:52,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:22:52" (1/1) ... [2024-10-23 21:22:52,143 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:22:52,440 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label46.c[5357,5370] [2024-10-23 21:22:52,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:22:52,843 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:22:52,871 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label46.c[5357,5370] [2024-10-23 21:22:53,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:22:53,067 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:22:53,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53 WrapperNode [2024-10-23 21:22:53,068 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:22:53,069 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:22:53,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:22:53,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:22:53,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,139 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,348 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2024-10-23 21:22:53,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:22:53,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:22:53,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:22:53,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:22:53,361 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,474 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:22:53,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,474 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,676 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:22:53,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:22:53,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:22:53,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:22:53,810 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (1/1) ... [2024-10-23 21:22:53,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:22:53,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:22:53,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:22:53,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:22:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:22:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:22:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:22:53,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:22:53,977 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:22:53,979 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:22:56,490 INFO L? ?]: Removed 246 outVars from TransFormulas that were not future-live. [2024-10-23 21:22:56,491 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:22:56,553 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:22:56,555 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:22:56,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:22:56 BoogieIcfgContainer [2024-10-23 21:22:56,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:22:56,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:22:56,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:22:56,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:22:56,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:22:52" (1/3) ... [2024-10-23 21:22:56,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a267a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:22:56, skipping insertion in model container [2024-10-23 21:22:56,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:22:53" (2/3) ... [2024-10-23 21:22:56,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a267a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:22:56, skipping insertion in model container [2024-10-23 21:22:56,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:22:56" (3/3) ... [2024-10-23 21:22:56,565 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label46.c [2024-10-23 21:22:56,583 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:22:56,583 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:22:56,670 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:22:56,677 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;@a6cf266, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:22:56,679 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:22:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:22:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-23 21:22:56,694 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:22:56,695 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:22:56,695 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:22:56,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:22:56,702 INFO L85 PathProgramCache]: Analyzing trace with hash -425361085, now seen corresponding path program 1 times [2024-10-23 21:22:56,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:22:56,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949923725] [2024-10-23 21:22:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:22:56,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:22:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:22:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:22:56,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:22:56,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949923725] [2024-10-23 21:22:56,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949923725] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:22:56,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:22:56,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:22:56,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646985512] [2024-10-23 21:22:56,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:22:56,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:22:56,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:22:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:22:56,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:22:56,961 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:22:57,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:22:57,018 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2024-10-23 21:22:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:22:57,021 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-10-23 21:22:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:22:57,038 INFO L225 Difference]: With dead ends: 723 [2024-10-23 21:22:57,039 INFO L226 Difference]: Without dead ends: 360 [2024-10-23 21:22:57,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:22:57,049 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:22:57,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:22:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-23 21:22:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-10-23 21:22:57,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:22:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2024-10-23 21:22:57,117 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 42 [2024-10-23 21:22:57,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:22:57,117 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2024-10-23 21:22:57,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:22:57,118 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2024-10-23 21:22:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-23 21:22:57,121 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:22:57,121 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:22:57,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:22:57,122 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:22:57,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:22:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash 308602395, now seen corresponding path program 1 times [2024-10-23 21:22:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:22:57,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345021148] [2024-10-23 21:22:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:22:57,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:22:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:22:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:22:57,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:22:57,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345021148] [2024-10-23 21:22:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345021148] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:22:57,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:22:57,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:22:57,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447802685] [2024-10-23 21:22:57,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:22:57,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:22:57,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:22:57,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:22:57,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:22:57,298 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:22:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:22:59,095 INFO L93 Difference]: Finished difference Result 1046 states and 1824 transitions. [2024-10-23 21:22:59,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:22:59,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-10-23 21:22:59,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:22:59,099 INFO L225 Difference]: With dead ends: 1046 [2024-10-23 21:22:59,099 INFO L226 Difference]: Without dead ends: 687 [2024-10-23 21:22:59,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:22:59,101 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 294 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:22:59,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 193 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:22:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-10-23 21:22:59,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 679. [2024-10-23 21:22:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 678 states have (on average 1.6106194690265487) internal successors, (1092), 678 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:22:59,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1092 transitions. [2024-10-23 21:22:59,131 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1092 transitions. Word has length 42 [2024-10-23 21:22:59,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:22:59,132 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 1092 transitions. [2024-10-23 21:22:59,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:22:59,132 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1092 transitions. [2024-10-23 21:22:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-10-23 21:22:59,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:22:59,136 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:22:59,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:22:59,136 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:22:59,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:22:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1967829611, now seen corresponding path program 1 times [2024-10-23 21:22:59,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:22:59,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883410816] [2024-10-23 21:22:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:22:59,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:22:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:22:59,347 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:22:59,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:22:59,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883410816] [2024-10-23 21:22:59,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883410816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:22:59,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:22:59,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:22:59,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725794209] [2024-10-23 21:22:59,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:22:59,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:22:59,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:22:59,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:22:59,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:22:59,354 INFO L87 Difference]: Start difference. First operand 679 states and 1092 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:00,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:00,695 INFO L93 Difference]: Finished difference Result 1963 states and 3170 transitions. [2024-10-23 21:23:00,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:00,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2024-10-23 21:23:00,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:00,701 INFO L225 Difference]: With dead ends: 1963 [2024-10-23 21:23:00,701 INFO L226 Difference]: Without dead ends: 1285 [2024-10-23 21:23:00,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:00,705 INFO L432 NwaCegarLoop]: 291 mSDtfsCounter, 282 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:00,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 358 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:23:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1285 states. [2024-10-23 21:23:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1285 to 1280. [2024-10-23 21:23:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.3956215793588742) internal successors, (1785), 1279 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:00,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1785 transitions. [2024-10-23 21:23:00,757 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1785 transitions. Word has length 110 [2024-10-23 21:23:00,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:00,757 INFO L471 AbstractCegarLoop]: Abstraction has 1280 states and 1785 transitions. [2024-10-23 21:23:00,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1785 transitions. [2024-10-23 21:23:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-10-23 21:23:00,761 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:00,761 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:00,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:23:00,762 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:00,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:00,762 INFO L85 PathProgramCache]: Analyzing trace with hash 279730943, now seen corresponding path program 1 times [2024-10-23 21:23:00,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:00,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917617193] [2024-10-23 21:23:00,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:00,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:23:00,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:00,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917617193] [2024-10-23 21:23:00,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917617193] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:00,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:00,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:00,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062333154] [2024-10-23 21:23:00,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:00,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:00,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:00,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:00,994 INFO L87 Difference]: Start difference. First operand 1280 states and 1785 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:02,771 INFO L93 Difference]: Finished difference Result 3765 states and 5245 transitions. [2024-10-23 21:23:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:02,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2024-10-23 21:23:02,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:02,785 INFO L225 Difference]: With dead ends: 3765 [2024-10-23 21:23:02,785 INFO L226 Difference]: Without dead ends: 2486 [2024-10-23 21:23:02,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:02,791 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 285 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:02,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 634 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:23:02,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2024-10-23 21:23:02,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2486. [2024-10-23 21:23:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2485 states have (on average 1.2446680080482897) internal successors, (3093), 2485 states have internal predecessors, (3093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 3093 transitions. [2024-10-23 21:23:02,848 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 3093 transitions. Word has length 118 [2024-10-23 21:23:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:02,848 INFO L471 AbstractCegarLoop]: Abstraction has 2486 states and 3093 transitions. [2024-10-23 21:23:02,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:02,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 3093 transitions. [2024-10-23 21:23:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-23 21:23:02,852 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:02,852 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:02,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:23:02,853 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:02,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:02,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1428179819, now seen corresponding path program 1 times [2024-10-23 21:23:02,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:02,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147329958] [2024-10-23 21:23:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:02,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:23:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147329958] [2024-10-23 21:23:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147329958] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:03,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:23:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717552540] [2024-10-23 21:23:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:03,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:03,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:03,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:03,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:03,074 INFO L87 Difference]: Start difference. First operand 2486 states and 3093 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:04,573 INFO L93 Difference]: Finished difference Result 6172 states and 7858 transitions. [2024-10-23 21:23:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:04,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2024-10-23 21:23:04,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:04,586 INFO L225 Difference]: With dead ends: 6172 [2024-10-23 21:23:04,586 INFO L226 Difference]: Without dead ends: 3687 [2024-10-23 21:23:04,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:04,593 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 233 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:04,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 362 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:23:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2024-10-23 21:23:04,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3386. [2024-10-23 21:23:04,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.2115214180206795) internal successors, (4101), 3385 states have internal predecessors, (4101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:04,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4101 transitions. [2024-10-23 21:23:04,654 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4101 transitions. Word has length 124 [2024-10-23 21:23:04,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:04,655 INFO L471 AbstractCegarLoop]: Abstraction has 3386 states and 4101 transitions. [2024-10-23 21:23:04,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4101 transitions. [2024-10-23 21:23:04,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-10-23 21:23:04,659 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:04,660 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:04,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:23:04,660 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:04,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1289548202, now seen corresponding path program 1 times [2024-10-23 21:23:04,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:04,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475401861] [2024-10-23 21:23:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-23 21:23:04,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:04,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475401861] [2024-10-23 21:23:04,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475401861] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:04,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:04,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:23:04,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844982420] [2024-10-23 21:23:04,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:04,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:04,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:04,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:04,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:04,979 INFO L87 Difference]: Start difference. First operand 3386 states and 4101 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:06,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:06,431 INFO L93 Difference]: Finished difference Result 9171 states and 11159 transitions. [2024-10-23 21:23:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:06,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 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 238 [2024-10-23 21:23:06,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:06,451 INFO L225 Difference]: With dead ends: 9171 [2024-10-23 21:23:06,452 INFO L226 Difference]: Without dead ends: 5786 [2024-10-23 21:23:06,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:06,458 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 117 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:06,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 315 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:23:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5786 states. [2024-10-23 21:23:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5786 to 5185. [2024-10-23 21:23:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 1.177854938271605) internal successors, (6106), 5184 states have internal predecessors, (6106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 6106 transitions. [2024-10-23 21:23:06,583 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 6106 transitions. Word has length 238 [2024-10-23 21:23:06,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:06,586 INFO L471 AbstractCegarLoop]: Abstraction has 5185 states and 6106 transitions. [2024-10-23 21:23:06,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 2 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:06,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 6106 transitions. [2024-10-23 21:23:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-10-23 21:23:06,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:06,592 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:06,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:23:06,592 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:06,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:06,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1306971667, now seen corresponding path program 1 times [2024-10-23 21:23:06,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:06,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275588188] [2024-10-23 21:23:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 21:23:07,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:07,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275588188] [2024-10-23 21:23:07,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275588188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:07,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:07,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:23:07,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076047284] [2024-10-23 21:23:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:07,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:07,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:07,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:07,268 INFO L87 Difference]: Start difference. First operand 5185 states and 6106 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:08,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:08,360 INFO L93 Difference]: Finished difference Result 10668 states and 12522 transitions. [2024-10-23 21:23:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:08,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 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 319 [2024-10-23 21:23:08,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:08,372 INFO L225 Difference]: With dead ends: 10668 [2024-10-23 21:23:08,372 INFO L226 Difference]: Without dead ends: 5484 [2024-10-23 21:23:08,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:08,380 INFO L432 NwaCegarLoop]: 322 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:08,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 357 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:23:08,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2024-10-23 21:23:08,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 5484. [2024-10-23 21:23:08,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5484 states, 5483 states have (on average 1.1692504103592924) internal successors, (6411), 5483 states have internal predecessors, (6411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5484 states to 5484 states and 6411 transitions. [2024-10-23 21:23:08,459 INFO L78 Accepts]: Start accepts. Automaton has 5484 states and 6411 transitions. Word has length 319 [2024-10-23 21:23:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:08,459 INFO L471 AbstractCegarLoop]: Abstraction has 5484 states and 6411 transitions. [2024-10-23 21:23:08,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:08,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5484 states and 6411 transitions. [2024-10-23 21:23:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-10-23 21:23:08,464 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:08,464 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:08,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:23:08,465 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:08,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash -440793653, now seen corresponding path program 1 times [2024-10-23 21:23:08,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:08,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885423468] [2024-10-23 21:23:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:08,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-23 21:23:08,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:08,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885423468] [2024-10-23 21:23:08,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885423468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:08,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:08,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:08,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255023317] [2024-10-23 21:23:08,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:08,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:08,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:08,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:08,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:08,686 INFO L87 Difference]: Start difference. First operand 5484 states and 6411 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:10,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:10,389 INFO L93 Difference]: Finished difference Result 12761 states and 15151 transitions. [2024-10-23 21:23:10,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:10,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 329 [2024-10-23 21:23:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:10,414 INFO L225 Difference]: With dead ends: 12761 [2024-10-23 21:23:10,415 INFO L226 Difference]: Without dead ends: 7577 [2024-10-23 21:23:10,421 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:10,422 INFO L432 NwaCegarLoop]: 275 mSDtfsCounter, 271 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:10,423 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 320 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:23:10,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7577 states. [2024-10-23 21:23:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7577 to 4882. [2024-10-23 21:23:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4881 states have (on average 1.1798811718910058) internal successors, (5759), 4881 states have internal predecessors, (5759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 5759 transitions. [2024-10-23 21:23:10,515 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 5759 transitions. Word has length 329 [2024-10-23 21:23:10,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:10,516 INFO L471 AbstractCegarLoop]: Abstraction has 4882 states and 5759 transitions. [2024-10-23 21:23:10,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 5759 transitions. [2024-10-23 21:23:10,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-10-23 21:23:10,522 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:10,523 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:10,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:23:10,524 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:10,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:10,524 INFO L85 PathProgramCache]: Analyzing trace with hash -913788184, now seen corresponding path program 1 times [2024-10-23 21:23:10,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:10,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088353995] [2024-10-23 21:23:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:10,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:23:10,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:10,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088353995] [2024-10-23 21:23:10,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088353995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:10,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:10,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:10,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107316093] [2024-10-23 21:23:10,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:10,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:10,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:10,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:10,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:10,853 INFO L87 Difference]: Start difference. First operand 4882 states and 5759 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:12,849 INFO L93 Difference]: Finished difference Result 11269 states and 13600 transitions. [2024-10-23 21:23:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:12,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 394 [2024-10-23 21:23:12,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:12,866 INFO L225 Difference]: With dead ends: 11269 [2024-10-23 21:23:12,866 INFO L226 Difference]: Without dead ends: 6687 [2024-10-23 21:23:12,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:12,871 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 250 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:12,872 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 598 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-23 21:23:12,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6687 states. [2024-10-23 21:23:12,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6687 to 6385. [2024-10-23 21:23:12,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6385 states, 6384 states have (on average 1.157111528822055) internal successors, (7387), 6384 states have internal predecessors, (7387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6385 states to 6385 states and 7387 transitions. [2024-10-23 21:23:12,951 INFO L78 Accepts]: Start accepts. Automaton has 6385 states and 7387 transitions. Word has length 394 [2024-10-23 21:23:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:12,952 INFO L471 AbstractCegarLoop]: Abstraction has 6385 states and 7387 transitions. [2024-10-23 21:23:12,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 6385 states and 7387 transitions. [2024-10-23 21:23:12,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2024-10-23 21:23:12,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:12,959 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:12,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:23:12,959 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:12,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1744483348, now seen corresponding path program 1 times [2024-10-23 21:23:12,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:12,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114474104] [2024-10-23 21:23:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:12,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-10-23 21:23:13,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:13,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114474104] [2024-10-23 21:23:13,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114474104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:13,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:13,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:13,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276238171] [2024-10-23 21:23:13,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:13,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:13,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:13,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:13,263 INFO L87 Difference]: Start difference. First operand 6385 states and 7387 transitions. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:14,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:14,712 INFO L93 Difference]: Finished difference Result 14264 states and 16843 transitions. [2024-10-23 21:23:14,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:14,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 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 410 [2024-10-23 21:23:14,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:14,728 INFO L225 Difference]: With dead ends: 14264 [2024-10-23 21:23:14,729 INFO L226 Difference]: Without dead ends: 8179 [2024-10-23 21:23:14,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:14,735 INFO L432 NwaCegarLoop]: 578 mSDtfsCounter, 245 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:14,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 616 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:23:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8179 states. [2024-10-23 21:23:14,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8179 to 7876. [2024-10-23 21:23:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7876 states, 7875 states have (on average 1.1445079365079365) internal successors, (9013), 7875 states have internal predecessors, (9013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:14,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7876 states to 7876 states and 9013 transitions. [2024-10-23 21:23:14,842 INFO L78 Accepts]: Start accepts. Automaton has 7876 states and 9013 transitions. Word has length 410 [2024-10-23 21:23:14,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:14,843 INFO L471 AbstractCegarLoop]: Abstraction has 7876 states and 9013 transitions. [2024-10-23 21:23:14,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:14,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7876 states and 9013 transitions. [2024-10-23 21:23:14,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-10-23 21:23:14,852 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:14,854 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:14,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:23:14,854 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:14,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:14,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1637351191, now seen corresponding path program 1 times [2024-10-23 21:23:14,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:14,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769519901] [2024-10-23 21:23:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:14,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-10-23 21:23:15,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:15,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769519901] [2024-10-23 21:23:15,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769519901] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:15,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:15,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:15,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845166297] [2024-10-23 21:23:15,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:15,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:15,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:15,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:15,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:15,135 INFO L87 Difference]: Start difference. First operand 7876 states and 9013 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:16,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:16,444 INFO L93 Difference]: Finished difference Result 17843 states and 20677 transitions. [2024-10-23 21:23:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:16,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 506 [2024-10-23 21:23:16,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:16,462 INFO L225 Difference]: With dead ends: 17843 [2024-10-23 21:23:16,462 INFO L226 Difference]: Without dead ends: 10267 [2024-10-23 21:23:16,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:16,472 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 372 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:16,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 444 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:23:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10267 states. [2024-10-23 21:23:16,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10267 to 10267. [2024-10-23 21:23:16,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10267 states, 10266 states have (on average 1.1468926553672316) internal successors, (11774), 10266 states have internal predecessors, (11774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10267 states to 10267 states and 11774 transitions. [2024-10-23 21:23:16,598 INFO L78 Accepts]: Start accepts. Automaton has 10267 states and 11774 transitions. Word has length 506 [2024-10-23 21:23:16,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:16,599 INFO L471 AbstractCegarLoop]: Abstraction has 10267 states and 11774 transitions. [2024-10-23 21:23:16,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:16,600 INFO L276 IsEmpty]: Start isEmpty. Operand 10267 states and 11774 transitions. [2024-10-23 21:23:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2024-10-23 21:23:16,605 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:16,605 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 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] [2024-10-23 21:23:16,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:23:16,606 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:16,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1356733854, now seen corresponding path program 1 times [2024-10-23 21:23:16,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:16,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621813275] [2024-10-23 21:23:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:16,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-10-23 21:23:17,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:17,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621813275] [2024-10-23 21:23:17,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621813275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:17,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:17,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:17,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415862840] [2024-10-23 21:23:17,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:17,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:17,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:17,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:17,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:17,162 INFO L87 Difference]: Start difference. First operand 10267 states and 11774 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:18,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:18,638 INFO L93 Difference]: Finished difference Result 25032 states and 28937 transitions. [2024-10-23 21:23:18,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:18,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 530 [2024-10-23 21:23:18,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:18,666 INFO L225 Difference]: With dead ends: 25032 [2024-10-23 21:23:18,666 INFO L226 Difference]: Without dead ends: 15065 [2024-10-23 21:23:18,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:18,679 INFO L432 NwaCegarLoop]: 585 mSDtfsCounter, 248 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:18,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 616 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:23:18,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15065 states. [2024-10-23 21:23:18,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15065 to 15054. [2024-10-23 21:23:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15054 states, 15053 states have (on average 1.1306716269182222) internal successors, (17020), 15053 states have internal predecessors, (17020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:18,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15054 states to 15054 states and 17020 transitions. [2024-10-23 21:23:18,876 INFO L78 Accepts]: Start accepts. Automaton has 15054 states and 17020 transitions. Word has length 530 [2024-10-23 21:23:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:18,877 INFO L471 AbstractCegarLoop]: Abstraction has 15054 states and 17020 transitions. [2024-10-23 21:23:18,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 15054 states and 17020 transitions. [2024-10-23 21:23:18,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2024-10-23 21:23:18,886 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:18,887 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:18,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:23:18,887 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:18,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash 37161760, now seen corresponding path program 1 times [2024-10-23 21:23:18,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:18,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039566765] [2024-10-23 21:23:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:18,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:19,353 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2024-10-23 21:23:19,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:19,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039566765] [2024-10-23 21:23:19,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039566765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:19,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:19,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:19,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417472632] [2024-10-23 21:23:19,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:19,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:19,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:19,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:19,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:19,356 INFO L87 Difference]: Start difference. First operand 15054 states and 17020 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:20,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:20,385 INFO L93 Difference]: Finished difference Result 31004 states and 35003 transitions. [2024-10-23 21:23:20,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:20,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 584 [2024-10-23 21:23:20,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:20,407 INFO L225 Difference]: With dead ends: 31004 [2024-10-23 21:23:20,407 INFO L226 Difference]: Without dead ends: 15054 [2024-10-23 21:23:20,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:20,425 INFO L432 NwaCegarLoop]: 620 mSDtfsCounter, 259 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:20,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 663 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:23:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15054 states. [2024-10-23 21:23:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15054 to 15054. [2024-10-23 21:23:20,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15054 states, 15053 states have (on average 1.1287451006443898) internal successors, (16991), 15053 states have internal predecessors, (16991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15054 states to 15054 states and 16991 transitions. [2024-10-23 21:23:20,613 INFO L78 Accepts]: Start accepts. Automaton has 15054 states and 16991 transitions. Word has length 584 [2024-10-23 21:23:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:20,614 INFO L471 AbstractCegarLoop]: Abstraction has 15054 states and 16991 transitions. [2024-10-23 21:23:20,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 15054 states and 16991 transitions. [2024-10-23 21:23:20,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2024-10-23 21:23:20,624 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:20,624 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:20,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:23:20,625 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:20,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:20,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1381730648, now seen corresponding path program 1 times [2024-10-23 21:23:20,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:20,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403520871] [2024-10-23 21:23:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:20,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:21,346 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 578 proven. 39 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-10-23 21:23:21,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:21,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403520871] [2024-10-23 21:23:21,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403520871] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:23:21,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258307356] [2024-10-23 21:23:21,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:21,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:23:21,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:23:21,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:23:21,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:23:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:21,607 INFO L255 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:23:21,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:23:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 617 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-10-23 21:23:22,615 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:23:22,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258307356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:22,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:23:22,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:23:22,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359694126] [2024-10-23 21:23:22,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:22,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:23:22,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:22,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:23:22,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:23:22,618 INFO L87 Difference]: Start difference. First operand 15054 states and 16991 transitions. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:24,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:24,101 INFO L93 Difference]: Finished difference Result 31305 states and 35310 transitions. [2024-10-23 21:23:24,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:23:24,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 597 [2024-10-23 21:23:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:24,124 INFO L225 Difference]: With dead ends: 31305 [2024-10-23 21:23:24,125 INFO L226 Difference]: Without dead ends: 16252 [2024-10-23 21:23:24,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:23:24,138 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 316 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:24,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 383 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:23:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16252 states. [2024-10-23 21:23:24,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16252 to 15952. [2024-10-23 21:23:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15952 states, 15951 states have (on average 1.1232524606607737) internal successors, (17917), 15951 states have internal predecessors, (17917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15952 states to 15952 states and 17917 transitions. [2024-10-23 21:23:24,459 INFO L78 Accepts]: Start accepts. Automaton has 15952 states and 17917 transitions. Word has length 597 [2024-10-23 21:23:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:24,460 INFO L471 AbstractCegarLoop]: Abstraction has 15952 states and 17917 transitions. [2024-10-23 21:23:24,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 15952 states and 17917 transitions. [2024-10-23 21:23:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2024-10-23 21:23:24,475 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:24,475 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:24,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 21:23:24,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 21:23:24,676 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:24,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1264022221, now seen corresponding path program 1 times [2024-10-23 21:23:24,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:24,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103414306] [2024-10-23 21:23:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:24,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2024-10-23 21:23:25,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:25,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103414306] [2024-10-23 21:23:25,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103414306] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:25,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:25,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:25,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017007975] [2024-10-23 21:23:25,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:25,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:25,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:25,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:25,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:25,085 INFO L87 Difference]: Start difference. First operand 15952 states and 17917 transitions. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:26,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:26,123 INFO L93 Difference]: Finished difference Result 31901 states and 35831 transitions. [2024-10-23 21:23:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:26,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 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 [2024-10-23 21:23:26,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:26,144 INFO L225 Difference]: With dead ends: 31901 [2024-10-23 21:23:26,144 INFO L226 Difference]: Without dead ends: 15950 [2024-10-23 21:23:26,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:26,156 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 464 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:26,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 69 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-23 21:23:26,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15950 states. [2024-10-23 21:23:26,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15950 to 15950. [2024-10-23 21:23:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15950 states, 15949 states have (on average 1.1231425167722113) internal successors, (17913), 15949 states have internal predecessors, (17913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15950 states to 15950 states and 17913 transitions. [2024-10-23 21:23:26,423 INFO L78 Accepts]: Start accepts. Automaton has 15950 states and 17913 transitions. Word has length 622 [2024-10-23 21:23:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:26,424 INFO L471 AbstractCegarLoop]: Abstraction has 15950 states and 17913 transitions. [2024-10-23 21:23:26,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:26,425 INFO L276 IsEmpty]: Start isEmpty. Operand 15950 states and 17913 transitions. [2024-10-23 21:23:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-10-23 21:23:26,434 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:26,435 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:23:26,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:23:26,435 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:26,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash -434930630, now seen corresponding path program 1 times [2024-10-23 21:23:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:26,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804616645] [2024-10-23 21:23:26,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:26,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:27,237 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2024-10-23 21:23:27,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:27,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804616645] [2024-10-23 21:23:27,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804616645] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:27,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:27,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:27,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662264321] [2024-10-23 21:23:27,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:27,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:27,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:27,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:27,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:27,245 INFO L87 Difference]: Start difference. First operand 15950 states and 17913 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:28,439 INFO L93 Difference]: Finished difference Result 31905 states and 35833 transitions. [2024-10-23 21:23:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:28,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 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 638 [2024-10-23 21:23:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:28,455 INFO L225 Difference]: With dead ends: 31905 [2024-10-23 21:23:28,455 INFO L226 Difference]: Without dead ends: 15956 [2024-10-23 21:23:28,467 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 [2024-10-23 21:23:28,467 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 348 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:28,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 167 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-23 21:23:28,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15956 states. [2024-10-23 21:23:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15956 to 15352. [2024-10-23 21:23:28,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15352 states, 15351 states have (on average 1.1153019347273794) internal successors, (17121), 15351 states have internal predecessors, (17121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15352 states to 15352 states and 17121 transitions. [2024-10-23 21:23:28,610 INFO L78 Accepts]: Start accepts. Automaton has 15352 states and 17121 transitions. Word has length 638 [2024-10-23 21:23:28,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:28,611 INFO L471 AbstractCegarLoop]: Abstraction has 15352 states and 17121 transitions. [2024-10-23 21:23:28,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 15352 states and 17121 transitions. [2024-10-23 21:23:28,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2024-10-23 21:23:28,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:28,623 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:23:28,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:23:28,623 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:28,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1473063476, now seen corresponding path program 1 times [2024-10-23 21:23:28,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:28,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494779523] [2024-10-23 21:23:28,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:28,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2024-10-23 21:23:29,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:29,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494779523] [2024-10-23 21:23:29,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494779523] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:29,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:29,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:29,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82306733] [2024-10-23 21:23:29,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:29,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:29,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:29,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:29,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:29,273 INFO L87 Difference]: Start difference. First operand 15352 states and 17121 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:30,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:30,841 INFO L93 Difference]: Finished difference Result 34310 states and 38360 transitions. [2024-10-23 21:23:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:30,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 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 667 [2024-10-23 21:23:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:30,866 INFO L225 Difference]: With dead ends: 34310 [2024-10-23 21:23:30,866 INFO L226 Difference]: Without dead ends: 18959 [2024-10-23 21:23:30,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:30,882 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 313 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:30,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 178 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:23:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18959 states. [2024-10-23 21:23:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18959 to 17745. [2024-10-23 21:23:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17745 states, 17744 states have (on average 1.119815148782687) internal successors, (19870), 17744 states have internal predecessors, (19870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17745 states to 17745 states and 19870 transitions. [2024-10-23 21:23:31,071 INFO L78 Accepts]: Start accepts. Automaton has 17745 states and 19870 transitions. Word has length 667 [2024-10-23 21:23:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:31,071 INFO L471 AbstractCegarLoop]: Abstraction has 17745 states and 19870 transitions. [2024-10-23 21:23:31,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 17745 states and 19870 transitions. [2024-10-23 21:23:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2024-10-23 21:23:31,081 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:31,082 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:31,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:23:31,082 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:31,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:31,083 INFO L85 PathProgramCache]: Analyzing trace with hash 722296057, now seen corresponding path program 1 times [2024-10-23 21:23:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:31,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871235922] [2024-10-23 21:23:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:31,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 566 proven. 190 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 21:23:32,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:32,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871235922] [2024-10-23 21:23:32,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871235922] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:23:32,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556226810] [2024-10-23 21:23:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:32,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:23:32,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:23:32,042 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:23:32,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:23:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:32,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:23:32,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:23:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-10-23 21:23:32,877 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:23:32,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556226810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:32,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:23:32,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-23 21:23:32,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026435573] [2024-10-23 21:23:32,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:32,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:32,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:23:32,879 INFO L87 Difference]: Start difference. First operand 17745 states and 19870 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:34,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:34,514 INFO L93 Difference]: Finished difference Result 38497 states and 43178 transitions. [2024-10-23 21:23:34,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:34,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 674 [2024-10-23 21:23:34,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:34,540 INFO L225 Difference]: With dead ends: 38497 [2024-10-23 21:23:34,540 INFO L226 Difference]: Without dead ends: 20753 [2024-10-23 21:23:34,554 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:23:34,555 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 313 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:34,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 165 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-23 21:23:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20753 states. [2024-10-23 21:23:34,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20753 to 17745. [2024-10-23 21:23:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17745 states, 17744 states have (on average 1.119815148782687) internal successors, (19870), 17744 states have internal predecessors, (19870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17745 states to 17745 states and 19870 transitions. [2024-10-23 21:23:34,731 INFO L78 Accepts]: Start accepts. Automaton has 17745 states and 19870 transitions. Word has length 674 [2024-10-23 21:23:34,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:34,732 INFO L471 AbstractCegarLoop]: Abstraction has 17745 states and 19870 transitions. [2024-10-23 21:23:34,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:34,732 INFO L276 IsEmpty]: Start isEmpty. Operand 17745 states and 19870 transitions. [2024-10-23 21:23:34,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2024-10-23 21:23:34,743 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:34,743 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:34,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-23 21:23:34,944 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,SelfDestructingSolverStorable17 [2024-10-23 21:23:34,944 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:34,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1975812117, now seen corresponding path program 1 times [2024-10-23 21:23:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:34,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120924863] [2024-10-23 21:23:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:34,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2024-10-23 21:23:35,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:35,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120924863] [2024-10-23 21:23:35,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120924863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:35,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:35,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:23:35,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964736449] [2024-10-23 21:23:35,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:35,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:23:35,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:23:35,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:23:35,492 INFO L87 Difference]: Start difference. First operand 17745 states and 19870 transitions. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:37,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:37,815 INFO L93 Difference]: Finished difference Result 47758 states and 53400 transitions. [2024-10-23 21:23:37,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:23:37,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 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 700 [2024-10-23 21:23:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:37,837 INFO L225 Difference]: With dead ends: 47758 [2024-10-23 21:23:37,838 INFO L226 Difference]: Without dead ends: 22240 [2024-10-23 21:23:37,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:23:37,850 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 713 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:37,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 475 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:23:37,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22240 states. [2024-10-23 21:23:37,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22240 to 15661. [2024-10-23 21:23:37,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15661 states, 15660 states have (on average 1.056257982120051) internal successors, (16541), 15660 states have internal predecessors, (16541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15661 states to 15661 states and 16541 transitions. [2024-10-23 21:23:38,007 INFO L78 Accepts]: Start accepts. Automaton has 15661 states and 16541 transitions. Word has length 700 [2024-10-23 21:23:38,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:38,007 INFO L471 AbstractCegarLoop]: Abstraction has 15661 states and 16541 transitions. [2024-10-23 21:23:38,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 15661 states and 16541 transitions. [2024-10-23 21:23:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2024-10-23 21:23:38,018 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:38,019 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:23:38,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:23:38,019 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:38,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:38,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1592847055, now seen corresponding path program 1 times [2024-10-23 21:23:38,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:38,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811685089] [2024-10-23 21:23:38,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:38,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 772 proven. 41 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-10-23 21:23:38,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:38,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811685089] [2024-10-23 21:23:38,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811685089] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:23:38,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008742487] [2024-10-23 21:23:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:38,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:23:38,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:23:38,942 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) [2024-10-23 21:23:38,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:23:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:39,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:23:39,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:23:39,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-10-23 21:23:39,352 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:23:39,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008742487] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:39,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:23:39,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-23 21:23:39,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593782087] [2024-10-23 21:23:39,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:39,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:39,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:39,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:39,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:23:39,355 INFO L87 Difference]: Start difference. First operand 15661 states and 16541 transitions. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:40,292 INFO L93 Difference]: Finished difference Result 37608 states and 39669 transitions. [2024-10-23 21:23:40,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:40,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 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 827 [2024-10-23 21:23:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:40,312 INFO L225 Difference]: With dead ends: 37608 [2024-10-23 21:23:40,313 INFO L226 Difference]: Without dead ends: 21649 [2024-10-23 21:23:40,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 827 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:23:40,323 INFO L432 NwaCegarLoop]: 512 mSDtfsCounter, 288 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:40,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 549 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:23:40,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21649 states. [2024-10-23 21:23:40,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21649 to 19553. [2024-10-23 21:23:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19553 states, 19552 states have (on average 1.0500204582651391) internal successors, (20530), 19552 states have internal predecessors, (20530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19553 states to 19553 states and 20530 transitions. [2024-10-23 21:23:40,499 INFO L78 Accepts]: Start accepts. Automaton has 19553 states and 20530 transitions. Word has length 827 [2024-10-23 21:23:40,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:40,500 INFO L471 AbstractCegarLoop]: Abstraction has 19553 states and 20530 transitions. [2024-10-23 21:23:40,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 19553 states and 20530 transitions. [2024-10-23 21:23:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2024-10-23 21:23:40,515 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:40,515 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:23:40,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:23:40,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:23:40,716 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:40,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:40,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1436970782, now seen corresponding path program 1 times [2024-10-23 21:23:40,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:40,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610226368] [2024-10-23 21:23:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:40,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 745 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2024-10-23 21:23:41,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:41,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610226368] [2024-10-23 21:23:41,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610226368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:41,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:41,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:41,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612542939] [2024-10-23 21:23:41,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:41,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:41,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:41,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:41,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:41,347 INFO L87 Difference]: Start difference. First operand 19553 states and 20530 transitions. Second operand has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:42,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:42,302 INFO L93 Difference]: Finished difference Result 42690 states and 44846 transitions. [2024-10-23 21:23:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:42,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 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 856 [2024-10-23 21:23:42,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:42,325 INFO L225 Difference]: With dead ends: 42690 [2024-10-23 21:23:42,325 INFO L226 Difference]: Without dead ends: 23138 [2024-10-23 21:23:42,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:42,338 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 95 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:42,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 166 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:23:42,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23138 states. [2024-10-23 21:23:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23138 to 21342. [2024-10-23 21:23:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21342 states, 21341 states have (on average 1.0469987348296705) internal successors, (22344), 21341 states have internal predecessors, (22344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:42,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21342 states to 21342 states and 22344 transitions. [2024-10-23 21:23:42,519 INFO L78 Accepts]: Start accepts. Automaton has 21342 states and 22344 transitions. Word has length 856 [2024-10-23 21:23:42,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:42,520 INFO L471 AbstractCegarLoop]: Abstraction has 21342 states and 22344 transitions. [2024-10-23 21:23:42,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:42,520 INFO L276 IsEmpty]: Start isEmpty. Operand 21342 states and 22344 transitions. [2024-10-23 21:23:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2024-10-23 21:23:42,535 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:42,536 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:42,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-23 21:23:42,536 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:42,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:42,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1213720026, now seen corresponding path program 1 times [2024-10-23 21:23:42,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:42,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048675681] [2024-10-23 21:23:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:42,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 753 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2024-10-23 21:23:43,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:43,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048675681] [2024-10-23 21:23:43,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048675681] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:43,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:43,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:23:43,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121437333] [2024-10-23 21:23:43,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:43,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:23:43,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:43,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:23:43,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:23:43,136 INFO L87 Difference]: Start difference. First operand 21342 states and 22344 transitions. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:44,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:44,496 INFO L93 Difference]: Finished difference Result 50766 states and 53105 transitions. [2024-10-23 21:23:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:23:44,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 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 909 [2024-10-23 21:23:44,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:44,523 INFO L225 Difference]: With dead ends: 50766 [2024-10-23 21:23:44,523 INFO L226 Difference]: Without dead ends: 26433 [2024-10-23 21:23:44,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:23:44,538 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 580 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:44,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 131 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-23 21:23:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26433 states. [2024-10-23 21:23:44,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26433 to 21041. [2024-10-23 21:23:44,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21041 states, 21040 states have (on average 1.046577946768061) internal successors, (22020), 21040 states have internal predecessors, (22020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21041 states to 21041 states and 22020 transitions. [2024-10-23 21:23:44,721 INFO L78 Accepts]: Start accepts. Automaton has 21041 states and 22020 transitions. Word has length 909 [2024-10-23 21:23:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:44,722 INFO L471 AbstractCegarLoop]: Abstraction has 21041 states and 22020 transitions. [2024-10-23 21:23:44,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 21041 states and 22020 transitions. [2024-10-23 21:23:44,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2024-10-23 21:23:44,735 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:44,735 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:44,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-23 21:23:44,736 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:44,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:44,736 INFO L85 PathProgramCache]: Analyzing trace with hash -798303887, now seen corresponding path program 1 times [2024-10-23 21:23:44,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:44,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69924528] [2024-10-23 21:23:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:44,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2024-10-23 21:23:45,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69924528] [2024-10-23 21:23:45,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69924528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:45,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:23:45,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:23:45,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244845042] [2024-10-23 21:23:45,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:45,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:23:45,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:45,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:23:45,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:45,092 INFO L87 Difference]: Start difference. First operand 21041 states and 22020 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:23:45,980 INFO L93 Difference]: Finished difference Result 46264 states and 48431 transitions. [2024-10-23 21:23:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:23:45,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 914 [2024-10-23 21:23:45,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:23:46,104 INFO L225 Difference]: With dead ends: 46264 [2024-10-23 21:23:46,104 INFO L226 Difference]: Without dead ends: 25224 [2024-10-23 21:23:46,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:23:46,112 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 308 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:23:46,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 538 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-23 21:23:46,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25224 states. [2024-10-23 21:23:46,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25224 to 22530. [2024-10-23 21:23:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22530 states, 22529 states have (on average 1.041724000177549) internal successors, (23469), 22529 states have internal predecessors, (23469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:46,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22530 states to 22530 states and 23469 transitions. [2024-10-23 21:23:46,279 INFO L78 Accepts]: Start accepts. Automaton has 22530 states and 23469 transitions. Word has length 914 [2024-10-23 21:23:46,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:23:46,279 INFO L471 AbstractCegarLoop]: Abstraction has 22530 states and 23469 transitions. [2024-10-23 21:23:46,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:23:46,279 INFO L276 IsEmpty]: Start isEmpty. Operand 22530 states and 23469 transitions. [2024-10-23 21:23:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2024-10-23 21:23:46,294 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:23:46,294 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:23:46,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-23 21:23:46,295 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:23:46,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:23:46,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1566967438, now seen corresponding path program 1 times [2024-10-23 21:23:46,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:23:46,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352040237] [2024-10-23 21:23:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:46,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:23:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1867 backedges. 1459 proven. 26 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-10-23 21:23:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:23:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352040237] [2024-10-23 21:23:47,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352040237] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:23:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114220248] [2024-10-23 21:23:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:23:47,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:23:47,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:23:47,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:23:47,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 21:23:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:23:47,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:23:48,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:23:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1867 backedges. 964 proven. 0 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2024-10-23 21:23:52,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:23:52,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114220248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:23:52,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:23:52,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-10-23 21:23:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178661529] [2024-10-23 21:23:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:23:52,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:23:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:23:52,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:23:52,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:23:52,037 INFO L87 Difference]: Start difference. First operand 22530 states and 23469 transitions. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:24:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:24:03,156 INFO L93 Difference]: Finished difference Result 55251 states and 57520 transitions. [2024-10-23 21:24:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:24:03,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 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 1076 [2024-10-23 21:24:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:24:03,191 INFO L225 Difference]: With dead ends: 55251 [2024-10-23 21:24:03,192 INFO L226 Difference]: Without dead ends: 32722 [2024-10-23 21:24:03,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 1075 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:24:03,208 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 417 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 187 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-10-23 21:24:03,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 143 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1610 Invalid, 17 Unknown, 0 Unchecked, 10.9s Time] [2024-10-23 21:24:03,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32722 states. [2024-10-23 21:24:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32722 to 24328. [2024-10-23 21:24:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24328 states, 24327 states have (on average 1.0434085583919102) internal successors, (25383), 24327 states have internal predecessors, (25383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:24:03,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24328 states to 24328 states and 25383 transitions. [2024-10-23 21:24:03,601 INFO L78 Accepts]: Start accepts. Automaton has 24328 states and 25383 transitions. Word has length 1076 [2024-10-23 21:24:03,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:24:03,602 INFO L471 AbstractCegarLoop]: Abstraction has 24328 states and 25383 transitions. [2024-10-23 21:24:03,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:24:03,602 INFO L276 IsEmpty]: Start isEmpty. Operand 24328 states and 25383 transitions. [2024-10-23 21:24:03,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1099 [2024-10-23 21:24:03,624 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:24:03,624 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:24:03,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-23 21:24:03,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:24:03,825 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:24:03,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:24:03,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1119165841, now seen corresponding path program 1 times [2024-10-23 21:24:03,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:24:03,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15680592] [2024-10-23 21:24:03,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:24:03,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:24:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:24:04,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 1329 proven. 0 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2024-10-23 21:24:04,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:24:04,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15680592] [2024-10-23 21:24:04,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15680592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:24:04,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:24:04,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:24:04,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811966902] [2024-10-23 21:24:04,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:24:04,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:24:04,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:24:04,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:24:04,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:24:04,517 INFO L87 Difference]: Start difference. First operand 24328 states and 25383 transitions. Second operand has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:24:05,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:24:05,655 INFO L93 Difference]: Finished difference Result 54358 states and 56704 transitions. [2024-10-23 21:24:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:24:05,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 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 1098 [2024-10-23 21:24:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:24:05,685 INFO L225 Difference]: With dead ends: 54358 [2024-10-23 21:24:05,686 INFO L226 Difference]: Without dead ends: 30031 [2024-10-23 21:24:05,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:24:05,702 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 225 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:24:05,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 114 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-23 21:24:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30031 states. [2024-10-23 21:24:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30031 to 27622. [2024-10-23 21:24:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27622 states, 27621 states have (on average 1.0441692914811194) internal successors, (28841), 27621 states have internal predecessors, (28841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:24:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27622 states to 27622 states and 28841 transitions. [2024-10-23 21:24:05,958 INFO L78 Accepts]: Start accepts. Automaton has 27622 states and 28841 transitions. Word has length 1098 [2024-10-23 21:24:05,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:24:05,959 INFO L471 AbstractCegarLoop]: Abstraction has 27622 states and 28841 transitions. [2024-10-23 21:24:05,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.33333333333334) internal successors, (667), 3 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:24:05,959 INFO L276 IsEmpty]: Start isEmpty. Operand 27622 states and 28841 transitions. [2024-10-23 21:24:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1175 [2024-10-23 21:24:05,984 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:24:05,985 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:24:05,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-23 21:24:05,985 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:24:05,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:24:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1104075063, now seen corresponding path program 1 times [2024-10-23 21:24:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:24:05,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729870396] [2024-10-23 21:24:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:24:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:24:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat