./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/Problem16_label15.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 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/Problem16_label15.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 04841d1aba9375b8a6b06dc8afee8df1fa6191c086b63f3a4a476e022f53e582 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-13 23:50:25,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 23:50:25,857 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 23:50:25,862 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 23:50:25,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 23:50:25,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 23:50:25,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 23:50:25,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 23:50:25,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 23:50:25,893 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 23:50:25,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 23:50:25,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 23:50:25,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 23:50:25,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 23:50:25,895 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 23:50:25,897 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 23:50:25,897 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 23:50:25,897 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 23:50:25,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 23:50:25,898 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 23:50:25,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 23:50:25,903 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 23:50:25,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 23:50:25,903 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 23:50:25,903 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 23:50:25,903 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 23:50:25,904 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 23:50:25,904 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 23:50:25,904 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 23:50:25,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 23:50:25,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 23:50:25,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 23:50:25,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:50:25,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 23:50:25,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 23:50:25,906 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 23:50:25,907 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 23:50:25,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 23:50:25,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 23:50:25,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 23:50:25,908 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 23:50:25,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 23:50:25,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04841d1aba9375b8a6b06dc8afee8df1fa6191c086b63f3a4a476e022f53e582 [2024-10-13 23:50:26,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 23:50:26,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 23:50:26,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 23:50:26,170 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 23:50:26,171 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 23:50:26,172 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label15.c [2024-10-13 23:50:27,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 23:50:27,893 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 23:50:27,894 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label15.c [2024-10-13 23:50:27,914 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d11d826f8/81ecdaa55cc4482b90d742f0f7d49aeb/FLAG562d73295 [2024-10-13 23:50:28,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d11d826f8/81ecdaa55cc4482b90d742f0f7d49aeb [2024-10-13 23:50:28,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 23:50:28,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 23:50:28,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 23:50:28,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 23:50:28,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 23:50:28,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:50:28" (1/1) ... [2024-10-13 23:50:28,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aa6f396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:28, skipping insertion in model container [2024-10-13 23:50:28,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:50:28" (1/1) ... [2024-10-13 23:50:28,239 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 23:50:28,426 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/Problem16_label15.c[2501,2514] [2024-10-13 23:50:28,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:50:28,879 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 23:50:28,902 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/Problem16_label15.c[2501,2514] [2024-10-13 23:50:29,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 23:50:29,107 INFO L204 MainTranslator]: Completed translation [2024-10-13 23:50:29,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29 WrapperNode [2024-10-13 23:50:29,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 23:50:29,110 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 23:50:29,110 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 23:50:29,110 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 23:50:29,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,289 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-10-13 23:50:29,290 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 23:50:29,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 23:50:29,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 23:50:29,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 23:50:29,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,315 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,400 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]. [2024-10-13 23:50:29,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,459 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,503 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 23:50:29,504 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 23:50:29,504 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 23:50:29,504 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 23:50:29,505 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (1/1) ... [2024-10-13 23:50:29,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 23:50:29,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:50:29,537 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) [2024-10-13 23:50:29,540 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 [2024-10-13 23:50:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 23:50:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 23:50:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 23:50:29,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 23:50:29,650 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 23:50:29,652 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 23:50:31,661 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-10-13 23:50:31,661 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 23:50:31,711 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 23:50:31,711 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 23:50:31,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:50:31 BoogieIcfgContainer [2024-10-13 23:50:31,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 23:50:31,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 23:50:31,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 23:50:31,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 23:50:31,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:50:28" (1/3) ... [2024-10-13 23:50:31,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8e3fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:50:31, skipping insertion in model container [2024-10-13 23:50:31,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:50:29" (2/3) ... [2024-10-13 23:50:31,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8e3fef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:50:31, skipping insertion in model container [2024-10-13 23:50:31,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:50:31" (3/3) ... [2024-10-13 23:50:31,721 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label15.c [2024-10-13 23:50:31,741 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 23:50:31,741 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 23:50:31,820 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 23:50:31,826 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;@6f26d7dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 23:50:31,826 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-13 23:50:31,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-13 23:50:31,839 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:31,840 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] [2024-10-13 23:50:31,841 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:31,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:31,847 INFO L85 PathProgramCache]: Analyzing trace with hash 348224313, now seen corresponding path program 1 times [2024-10-13 23:50:31,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:31,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038495816] [2024-10-13 23:50:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:31,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:50:32,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:32,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038495816] [2024-10-13 23:50:32,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038495816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:32,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:32,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:32,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317972713] [2024-10-13 23:50:32,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:32,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 23:50:32,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:32,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 23:50:32,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 23:50:32,054 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:32,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:32,114 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2024-10-13 23:50:32,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 23:50:32,120 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-10-13 23:50:32,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:32,130 INFO L225 Difference]: With dead ends: 667 [2024-10-13 23:50:32,131 INFO L226 Difference]: Without dead ends: 332 [2024-10-13 23:50:32,134 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 [2024-10-13 23:50:32,137 INFO L432 NwaCegarLoop]: 596 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, 596 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 [2024-10-13 23:50:32,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 23:50:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-10-13 23:50:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2024-10-13 23:50:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2024-10-13 23:50:32,192 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 21 [2024-10-13 23:50:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:32,193 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2024-10-13 23:50:32,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:32,193 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2024-10-13 23:50:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-13 23:50:32,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:32,194 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] [2024-10-13 23:50:32,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 23:50:32,195 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:32,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1265979183, now seen corresponding path program 1 times [2024-10-13 23:50:32,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:32,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252888158] [2024-10-13 23:50:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:32,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:50:32,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:32,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252888158] [2024-10-13 23:50:32,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252888158] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:32,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:32,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:32,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211800245] [2024-10-13 23:50:32,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:32,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:32,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:32,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:32,371 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:33,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:33,886 INFO L93 Difference]: Finished difference Result 992 states and 1785 transitions. [2024-10-13 23:50:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:33,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-10-13 23:50:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:33,890 INFO L225 Difference]: With dead ends: 992 [2024-10-13 23:50:33,890 INFO L226 Difference]: Without dead ends: 661 [2024-10-13 23:50:33,891 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 [2024-10-13 23:50:33,893 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 316 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:33,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 37 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-13 23:50:33,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-10-13 23:50:33,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2024-10-13 23:50:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.7651515151515151) internal successors, (1165), 660 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:33,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1165 transitions. [2024-10-13 23:50:33,937 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1165 transitions. Word has length 21 [2024-10-13 23:50:33,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:33,938 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 1165 transitions. [2024-10-13 23:50:33,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:33,938 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1165 transitions. [2024-10-13 23:50:33,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-13 23:50:33,941 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:33,941 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:33,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 23:50:33,941 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:33,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:33,942 INFO L85 PathProgramCache]: Analyzing trace with hash 642913803, now seen corresponding path program 1 times [2024-10-13 23:50:33,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:33,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429656738] [2024-10-13 23:50:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:33,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:50:34,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:34,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429656738] [2024-10-13 23:50:34,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429656738] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:34,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:34,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:34,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240676415] [2024-10-13 23:50:34,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:34,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:34,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:34,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:34,150 INFO L87 Difference]: Start difference. First operand 661 states and 1165 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:35,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:35,385 INFO L93 Difference]: Finished difference Result 1979 states and 3492 transitions. [2024-10-13 23:50:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:35,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2024-10-13 23:50:35,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:35,391 INFO L225 Difference]: With dead ends: 1979 [2024-10-13 23:50:35,391 INFO L226 Difference]: Without dead ends: 1319 [2024-10-13 23:50:35,392 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 [2024-10-13 23:50:35,394 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 344 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:35,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 75 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-13 23:50:35,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2024-10-13 23:50:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2024-10-13 23:50:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.6661608497723823) internal successors, (2196), 1318 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 2196 transitions. [2024-10-13 23:50:35,428 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 2196 transitions. Word has length 86 [2024-10-13 23:50:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:35,428 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 2196 transitions. [2024-10-13 23:50:35,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 2196 transitions. [2024-10-13 23:50:35,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-13 23:50:35,431 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:35,431 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:35,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 23:50:35,431 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:35,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:35,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1118469655, now seen corresponding path program 1 times [2024-10-13 23:50:35,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:35,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39286177] [2024-10-13 23:50:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:35,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:50:35,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:35,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39286177] [2024-10-13 23:50:35,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39286177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:35,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:35,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:35,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036524552] [2024-10-13 23:50:35,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:35,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:35,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:35,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:35,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:35,614 INFO L87 Difference]: Start difference. First operand 1319 states and 2196 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:37,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:37,149 INFO L93 Difference]: Finished difference Result 3624 states and 6016 transitions. [2024-10-13 23:50:37,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:37,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-10-13 23:50:37,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:37,158 INFO L225 Difference]: With dead ends: 3624 [2024-10-13 23:50:37,159 INFO L226 Difference]: Without dead ends: 2306 [2024-10-13 23:50:37,161 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 [2024-10-13 23:50:37,162 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 282 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:37,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 118 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-13 23:50:37,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2024-10-13 23:50:37,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2024-10-13 23:50:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 1.5926247288503255) internal successors, (3671), 2305 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3671 transitions. [2024-10-13 23:50:37,209 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3671 transitions. Word has length 89 [2024-10-13 23:50:37,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:37,210 INFO L471 AbstractCegarLoop]: Abstraction has 2306 states and 3671 transitions. [2024-10-13 23:50:37,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:37,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3671 transitions. [2024-10-13 23:50:37,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-13 23:50:37,215 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:37,216 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:37,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 23:50:37,216 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:37,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:37,217 INFO L85 PathProgramCache]: Analyzing trace with hash -909671433, now seen corresponding path program 1 times [2024-10-13 23:50:37,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:37,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682976881] [2024-10-13 23:50:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:37,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 23:50:37,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:37,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682976881] [2024-10-13 23:50:37,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682976881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:37,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:37,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:50:37,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411020407] [2024-10-13 23:50:37,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:37,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:50:37,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:37,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:50:37,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:50:37,408 INFO L87 Difference]: Start difference. First operand 2306 states and 3671 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:39,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:39,498 INFO L93 Difference]: Finished difference Result 6256 states and 9780 transitions. [2024-10-13 23:50:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:50:39,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2024-10-13 23:50:39,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:39,512 INFO L225 Difference]: With dead ends: 6256 [2024-10-13 23:50:39,513 INFO L226 Difference]: Without dead ends: 3951 [2024-10-13 23:50:39,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:50:39,517 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 884 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:39,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 190 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-13 23:50:39,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2024-10-13 23:50:39,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3951. [2024-10-13 23:50:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3951 states, 3950 states have (on average 1.4303797468354431) internal successors, (5650), 3950 states have internal predecessors, (5650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:39,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3951 states to 3951 states and 5650 transitions. [2024-10-13 23:50:39,618 INFO L78 Accepts]: Start accepts. Automaton has 3951 states and 5650 transitions. Word has length 94 [2024-10-13 23:50:39,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:39,619 INFO L471 AbstractCegarLoop]: Abstraction has 3951 states and 5650 transitions. [2024-10-13 23:50:39,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:39,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3951 states and 5650 transitions. [2024-10-13 23:50:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-13 23:50:39,620 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:39,621 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 23:50:39,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 23:50:39,621 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:39,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:39,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1771542956, now seen corresponding path program 1 times [2024-10-13 23:50:39,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:39,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082687141] [2024-10-13 23:50:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:39,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-13 23:50:39,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082687141] [2024-10-13 23:50:39,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082687141] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:39,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:39,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:39,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491983694] [2024-10-13 23:50:39,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:39,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:39,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:39,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:39,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:39,808 INFO L87 Difference]: Start difference. First operand 3951 states and 5650 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:40,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:40,975 INFO L93 Difference]: Finished difference Result 10533 states and 15385 transitions. [2024-10-13 23:50:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:40,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 108 [2024-10-13 23:50:40,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:41,000 INFO L225 Difference]: With dead ends: 10533 [2024-10-13 23:50:41,000 INFO L226 Difference]: Without dead ends: 6912 [2024-10-13 23:50:41,006 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 [2024-10-13 23:50:41,007 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 265 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:41,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 221 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 23:50:41,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2024-10-13 23:50:41,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 6912. [2024-10-13 23:50:41,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6912 states, 6911 states have (on average 1.3076255245261177) internal successors, (9037), 6911 states have internal predecessors, (9037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:41,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 9037 transitions. [2024-10-13 23:50:41,166 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 9037 transitions. Word has length 108 [2024-10-13 23:50:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:41,167 INFO L471 AbstractCegarLoop]: Abstraction has 6912 states and 9037 transitions. [2024-10-13 23:50:41,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 9037 transitions. [2024-10-13 23:50:41,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-10-13 23:50:41,173 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:41,174 INFO L215 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:41,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 23:50:41,175 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:41,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:41,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1557665642, now seen corresponding path program 1 times [2024-10-13 23:50:41,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:41,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946223484] [2024-10-13 23:50:41,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:41,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-10-13 23:50:41,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946223484] [2024-10-13 23:50:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946223484] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:41,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:41,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 23:50:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612496124] [2024-10-13 23:50:41,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:41,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:41,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:41,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:41,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:41,402 INFO L87 Difference]: Start difference. First operand 6912 states and 9037 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:42,513 INFO L93 Difference]: Finished difference Result 16455 states and 21648 transitions. [2024-10-13 23:50:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:42,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2024-10-13 23:50:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:42,538 INFO L225 Difference]: With dead ends: 16455 [2024-10-13 23:50:42,538 INFO L226 Difference]: Without dead ends: 9873 [2024-10-13 23:50:42,548 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 [2024-10-13 23:50:42,549 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 358 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:42,549 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 154 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-13 23:50:42,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9873 states. [2024-10-13 23:50:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9873 to 8886. [2024-10-13 23:50:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8886 states, 8885 states have (on average 1.1988745075970737) internal successors, (10652), 8885 states have internal predecessors, (10652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:42,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8886 states to 8886 states and 10652 transitions. [2024-10-13 23:50:42,743 INFO L78 Accepts]: Start accepts. Automaton has 8886 states and 10652 transitions. Word has length 270 [2024-10-13 23:50:42,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:42,744 INFO L471 AbstractCegarLoop]: Abstraction has 8886 states and 10652 transitions. [2024-10-13 23:50:42,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 8886 states and 10652 transitions. [2024-10-13 23:50:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-10-13 23:50:42,752 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:42,753 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-10-13 23:50:42,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 23:50:42,753 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:42,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:42,754 INFO L85 PathProgramCache]: Analyzing trace with hash 674896227, now seen corresponding path program 1 times [2024-10-13 23:50:42,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:42,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814613628] [2024-10-13 23:50:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:42,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-10-13 23:50:43,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:43,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814613628] [2024-10-13 23:50:43,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814613628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:43,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:43,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 23:50:43,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056927140] [2024-10-13 23:50:43,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:43,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 23:50:43,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:43,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 23:50:43,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:50:43,491 INFO L87 Difference]: Start difference. First operand 8886 states and 10652 transitions. Second operand has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 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) [2024-10-13 23:50:45,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:45,257 INFO L93 Difference]: Finished difference Result 17032 states and 20510 transitions. [2024-10-13 23:50:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 23:50:45,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 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 464 [2024-10-13 23:50:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:45,296 INFO L225 Difference]: With dead ends: 17032 [2024-10-13 23:50:45,297 INFO L226 Difference]: Without dead ends: 8557 [2024-10-13 23:50:45,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:50:45,309 INFO L432 NwaCegarLoop]: 261 mSDtfsCounter, 295 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:45,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 292 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-13 23:50:45,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8557 states. [2024-10-13 23:50:45,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8557 to 8557. [2024-10-13 23:50:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8557 states, 8556 states have (on average 1.0805282842449744) internal successors, (9245), 8556 states have internal predecessors, (9245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8557 states to 8557 states and 9245 transitions. [2024-10-13 23:50:45,427 INFO L78 Accepts]: Start accepts. Automaton has 8557 states and 9245 transitions. Word has length 464 [2024-10-13 23:50:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:45,427 INFO L471 AbstractCegarLoop]: Abstraction has 8557 states and 9245 transitions. [2024-10-13 23:50:45,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.285714285714285) internal successors, (394), 6 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) [2024-10-13 23:50:45,428 INFO L276 IsEmpty]: Start isEmpty. Operand 8557 states and 9245 transitions. [2024-10-13 23:50:45,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-10-13 23:50:45,435 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:45,435 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-10-13 23:50:45,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 23:50:45,436 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:45,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:45,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1916269499, now seen corresponding path program 1 times [2024-10-13 23:50:45,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:45,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45977527] [2024-10-13 23:50:45,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:45,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-13 23:50:46,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:46,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45977527] [2024-10-13 23:50:46,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45977527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:46,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:46,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:50:46,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074432598] [2024-10-13 23:50:46,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:46,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:50:46,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:46,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:50:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:50:46,187 INFO L87 Difference]: Start difference. First operand 8557 states and 9245 transitions. Second operand has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:47,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:47,558 INFO L93 Difference]: Finished difference Result 17771 states and 19317 transitions. [2024-10-13 23:50:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:50:47,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 492 [2024-10-13 23:50:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:47,575 INFO L225 Difference]: With dead ends: 17771 [2024-10-13 23:50:47,575 INFO L226 Difference]: Without dead ends: 9873 [2024-10-13 23:50:47,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:50:47,585 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 399 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:47,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 89 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-13 23:50:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9873 states. [2024-10-13 23:50:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9873 to 9873. [2024-10-13 23:50:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9873 states, 9872 states have (on average 1.078504862236629) internal successors, (10647), 9872 states have internal predecessors, (10647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:47,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9873 states to 9873 states and 10647 transitions. [2024-10-13 23:50:47,697 INFO L78 Accepts]: Start accepts. Automaton has 9873 states and 10647 transitions. Word has length 492 [2024-10-13 23:50:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:47,697 INFO L471 AbstractCegarLoop]: Abstraction has 9873 states and 10647 transitions. [2024-10-13 23:50:47,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:47,698 INFO L276 IsEmpty]: Start isEmpty. Operand 9873 states and 10647 transitions. [2024-10-13 23:50:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2024-10-13 23:50:47,710 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:47,711 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:47,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 23:50:47,711 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:47,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash 55406181, now seen corresponding path program 1 times [2024-10-13 23:50:47,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:47,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706401545] [2024-10-13 23:50:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:47,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-10-13 23:50:48,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:48,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706401545] [2024-10-13 23:50:48,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706401545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:48,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:48,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:50:48,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664254127] [2024-10-13 23:50:48,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:48,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:48,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:48,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:48,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:48,325 INFO L87 Difference]: Start difference. First operand 9873 states and 10647 transitions. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:49,157 INFO L93 Difference]: Finished difference Result 23035 states and 25042 transitions. [2024-10-13 23:50:49,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:49,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 596 [2024-10-13 23:50:49,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:49,177 INFO L225 Difference]: With dead ends: 23035 [2024-10-13 23:50:49,178 INFO L226 Difference]: Without dead ends: 13821 [2024-10-13 23:50:49,191 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 [2024-10-13 23:50:49,192 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 221 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:49,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 38 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:50:49,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13821 states. [2024-10-13 23:50:49,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13821 to 13163. [2024-10-13 23:50:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.0838018538216077) internal successors, (14265), 13162 states have internal predecessors, (14265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 14265 transitions. [2024-10-13 23:50:49,386 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 14265 transitions. Word has length 596 [2024-10-13 23:50:49,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:49,387 INFO L471 AbstractCegarLoop]: Abstraction has 13163 states and 14265 transitions. [2024-10-13 23:50:49,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 14265 transitions. [2024-10-13 23:50:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2024-10-13 23:50:49,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:49,400 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:49,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 23:50:49,401 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:49,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:49,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1828228799, now seen corresponding path program 1 times [2024-10-13 23:50:49,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:49,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672230639] [2024-10-13 23:50:49,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:49,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:51,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1692 backedges. 914 proven. 156 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2024-10-13 23:50:51,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:51,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672230639] [2024-10-13 23:50:51,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672230639] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:50:51,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525210561] [2024-10-13 23:50:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:51,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:50:51,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:50:51,088 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) [2024-10-13 23:50:51,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 23:50:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:51,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:50:51,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:50:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1692 backedges. 1072 proven. 0 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2024-10-13 23:50:51,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:50:51,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525210561] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:51,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:50:51,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-13 23:50:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761484669] [2024-10-13 23:50:51,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:51,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:51,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:50:51,588 INFO L87 Difference]: Start difference. First operand 13163 states and 14265 transitions. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:52,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:52,347 INFO L93 Difference]: Finished difference Result 28299 states and 30839 transitions. [2024-10-13 23:50:52,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:52,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 853 [2024-10-13 23:50:52,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:52,367 INFO L225 Difference]: With dead ends: 28299 [2024-10-13 23:50:52,367 INFO L226 Difference]: Without dead ends: 15795 [2024-10-13 23:50:52,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-13 23:50:52,382 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 236 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:52,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 31 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:50:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15795 states. [2024-10-13 23:50:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15795 to 15137. [2024-10-13 23:50:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15137 states, 15136 states have (on average 1.09071088794926) internal successors, (16509), 15136 states have internal predecessors, (16509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 16509 transitions. [2024-10-13 23:50:52,643 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 16509 transitions. Word has length 853 [2024-10-13 23:50:52,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:52,645 INFO L471 AbstractCegarLoop]: Abstraction has 15137 states and 16509 transitions. [2024-10-13 23:50:52,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:52,645 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 16509 transitions. [2024-10-13 23:50:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2024-10-13 23:50:52,672 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:52,673 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 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] [2024-10-13 23:50:52,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 23:50:52,873 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,SelfDestructingSolverStorable10 [2024-10-13 23:50:52,874 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:52,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1815952, now seen corresponding path program 1 times [2024-10-13 23:50:52,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:52,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274371459] [2024-10-13 23:50:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:52,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2243 backedges. 1295 proven. 0 refuted. 0 times theorem prover too weak. 948 trivial. 0 not checked. [2024-10-13 23:50:54,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:54,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274371459] [2024-10-13 23:50:54,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274371459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:54,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:54,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:50:54,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151345120] [2024-10-13 23:50:54,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:54,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:50:54,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:50:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:50:54,225 INFO L87 Difference]: Start difference. First operand 15137 states and 16509 transitions. Second operand has 4 states, 4 states have (on average 145.75) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:55,327 INFO L93 Difference]: Finished difference Result 29944 states and 32686 transitions. [2024-10-13 23:50:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:50:55,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.75) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 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 979 [2024-10-13 23:50:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:55,345 INFO L225 Difference]: With dead ends: 29944 [2024-10-13 23:50:55,345 INFO L226 Difference]: Without dead ends: 15137 [2024-10-13 23:50:55,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:50:55,361 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 268 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:55,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 120 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-13 23:50:55,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2024-10-13 23:50:55,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 15137. [2024-10-13 23:50:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15137 states, 15136 states have (on average 1.0903805496828753) internal successors, (16504), 15136 states have internal predecessors, (16504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15137 states to 15137 states and 16504 transitions. [2024-10-13 23:50:55,541 INFO L78 Accepts]: Start accepts. Automaton has 15137 states and 16504 transitions. Word has length 979 [2024-10-13 23:50:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:55,542 INFO L471 AbstractCegarLoop]: Abstraction has 15137 states and 16504 transitions. [2024-10-13 23:50:55,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.75) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 15137 states and 16504 transitions. [2024-10-13 23:50:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2024-10-13 23:50:55,567 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:55,567 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-13 23:50:55,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 23:50:55,568 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:55,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:55,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1388573548, now seen corresponding path program 1 times [2024-10-13 23:50:55,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:55,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221823422] [2024-10-13 23:50:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:55,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2330 backedges. 1248 proven. 0 refuted. 0 times theorem prover too weak. 1082 trivial. 0 not checked. [2024-10-13 23:50:56,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:56,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221823422] [2024-10-13 23:50:56,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221823422] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:56,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:56,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:50:56,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414684755] [2024-10-13 23:50:56,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:56,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:56,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:56,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:56,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:56,828 INFO L87 Difference]: Start difference. First operand 15137 states and 16504 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:57,585 INFO L93 Difference]: Finished difference Result 29615 states and 32345 transitions. [2024-10-13 23:50:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:57,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1040 [2024-10-13 23:50:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:57,598 INFO L225 Difference]: With dead ends: 29615 [2024-10-13 23:50:57,598 INFO L226 Difference]: Without dead ends: 15137 [2024-10-13 23:50:57,606 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 [2024-10-13 23:50:57,607 INFO L432 NwaCegarLoop]: 360 mSDtfsCounter, 263 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:57,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 364 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:50:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2024-10-13 23:50:57,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 14150. [2024-10-13 23:50:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14150 states, 14149 states have (on average 1.068556081701887) internal successors, (15119), 14149 states have internal predecessors, (15119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:57,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14150 states to 14150 states and 15119 transitions. [2024-10-13 23:50:57,749 INFO L78 Accepts]: Start accepts. Automaton has 14150 states and 15119 transitions. Word has length 1040 [2024-10-13 23:50:57,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:57,749 INFO L471 AbstractCegarLoop]: Abstraction has 14150 states and 15119 transitions. [2024-10-13 23:50:57,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 14150 states and 15119 transitions. [2024-10-13 23:50:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2024-10-13 23:50:57,769 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:57,769 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-13 23:50:57,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 23:50:57,770 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:57,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:57,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1825125251, now seen corresponding path program 1 times [2024-10-13 23:50:57,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:57,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285631465] [2024-10-13 23:50:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:57,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:50:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 1070 proven. 0 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2024-10-13 23:50:58,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:50:58,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285631465] [2024-10-13 23:50:58,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285631465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:50:58,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:50:58,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:50:58,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745404486] [2024-10-13 23:50:58,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:50:58,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:50:58,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:50:58,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:50:58,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:50:58,527 INFO L87 Difference]: Start difference. First operand 14150 states and 15119 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:59,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:50:59,171 INFO L93 Difference]: Finished difference Result 27641 states and 29575 transitions. [2024-10-13 23:50:59,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:50:59,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 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 1054 [2024-10-13 23:50:59,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:50:59,186 INFO L225 Difference]: With dead ends: 27641 [2024-10-13 23:50:59,186 INFO L226 Difference]: Without dead ends: 14150 [2024-10-13 23:50:59,196 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 [2024-10-13 23:50:59,197 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 179 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:50:59,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 374 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:50:59,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14150 states. [2024-10-13 23:50:59,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 13821. [2024-10-13 23:50:59,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13821 states, 13820 states have (on average 1.057452966714906) internal successors, (14614), 13820 states have internal predecessors, (14614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 14614 transitions. [2024-10-13 23:50:59,331 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 14614 transitions. Word has length 1054 [2024-10-13 23:50:59,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:50:59,332 INFO L471 AbstractCegarLoop]: Abstraction has 13821 states and 14614 transitions. [2024-10-13 23:50:59,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:50:59,332 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 14614 transitions. [2024-10-13 23:50:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1180 [2024-10-13 23:50:59,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:50:59,355 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:50:59,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 23:50:59,355 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:50:59,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:50:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash 121125462, now seen corresponding path program 1 times [2024-10-13 23:50:59,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:50:59,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985667521] [2024-10-13 23:50:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:50:59,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:50:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 1507 proven. 0 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2024-10-13 23:51:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985667521] [2024-10-13 23:51:00,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985667521] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:00,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:00,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:00,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258006940] [2024-10-13 23:51:00,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:00,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:00,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:00,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:00,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:00,095 INFO L87 Difference]: Start difference. First operand 13821 states and 14614 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:00,812 INFO L93 Difference]: Finished difference Result 28299 states and 29908 transitions. [2024-10-13 23:51:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:00,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 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 1179 [2024-10-13 23:51:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:00,827 INFO L225 Difference]: With dead ends: 28299 [2024-10-13 23:51:00,827 INFO L226 Difference]: Without dead ends: 13821 [2024-10-13 23:51:00,837 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 [2024-10-13 23:51:00,837 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 92 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:00,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 425 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:51:00,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13821 states. [2024-10-13 23:51:01,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13821 to 13492. [2024-10-13 23:51:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13492 states, 13491 states have (on average 1.0382477207026908) internal successors, (14007), 13491 states have internal predecessors, (14007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13492 states to 13492 states and 14007 transitions. [2024-10-13 23:51:01,055 INFO L78 Accepts]: Start accepts. Automaton has 13492 states and 14007 transitions. Word has length 1179 [2024-10-13 23:51:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:01,056 INFO L471 AbstractCegarLoop]: Abstraction has 13492 states and 14007 transitions. [2024-10-13 23:51:01,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 13492 states and 14007 transitions. [2024-10-13 23:51:01,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1614 [2024-10-13 23:51:01,086 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:01,087 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:01,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 23:51:01,087 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:01,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:01,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1721779820, now seen corresponding path program 1 times [2024-10-13 23:51:01,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:01,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652502686] [2024-10-13 23:51:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:01,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5027 backedges. 3432 proven. 0 refuted. 0 times theorem prover too weak. 1595 trivial. 0 not checked. [2024-10-13 23:51:02,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:02,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652502686] [2024-10-13 23:51:02,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652502686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:02,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:02,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 23:51:02,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291454481] [2024-10-13 23:51:02,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:02,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 23:51:02,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:02,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 23:51:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:51:02,947 INFO L87 Difference]: Start difference. First operand 13492 states and 14007 transitions. Second operand has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:04,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:04,040 INFO L93 Difference]: Finished difference Result 26655 states and 27689 transitions. [2024-10-13 23:51:04,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 23:51:04,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 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 1613 [2024-10-13 23:51:04,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:04,053 INFO L225 Difference]: With dead ends: 26655 [2024-10-13 23:51:04,054 INFO L226 Difference]: Without dead ends: 13822 [2024-10-13 23:51:04,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:51:04,064 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 565 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:04,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 561 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-13 23:51:04,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13822 states. [2024-10-13 23:51:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13822 to 13821. [2024-10-13 23:51:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13821 states, 13820 states have (on average 1.0371201157742402) internal successors, (14333), 13820 states have internal predecessors, (14333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13821 states to 13821 states and 14333 transitions. [2024-10-13 23:51:04,173 INFO L78 Accepts]: Start accepts. Automaton has 13821 states and 14333 transitions. Word has length 1613 [2024-10-13 23:51:04,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:04,174 INFO L471 AbstractCegarLoop]: Abstraction has 13821 states and 14333 transitions. [2024-10-13 23:51:04,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:04,175 INFO L276 IsEmpty]: Start isEmpty. Operand 13821 states and 14333 transitions. [2024-10-13 23:51:04,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1628 [2024-10-13 23:51:04,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:04,197 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:04,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 23:51:04,198 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:04,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash -373870005, now seen corresponding path program 1 times [2024-10-13 23:51:04,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:04,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147443432] [2024-10-13 23:51:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:04,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4909 backedges. 3403 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2024-10-13 23:51:05,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:05,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147443432] [2024-10-13 23:51:05,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147443432] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:05,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:05,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 23:51:05,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093223889] [2024-10-13 23:51:05,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:05,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:51:05,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:51:05,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 23:51:05,818 INFO L87 Difference]: Start difference. First operand 13821 states and 14333 transitions. Second operand has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:06,805 INFO L93 Difference]: Finished difference Result 26993 states and 28013 transitions. [2024-10-13 23:51:06,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 23:51:06,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 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 1627 [2024-10-13 23:51:06,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:06,820 INFO L225 Difference]: With dead ends: 26993 [2024-10-13 23:51:06,820 INFO L226 Difference]: Without dead ends: 13831 [2024-10-13 23:51:06,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 23:51:06,830 INFO L432 NwaCegarLoop]: 429 mSDtfsCounter, 218 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:06,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 440 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 23:51:06,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13831 states. [2024-10-13 23:51:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13831 to 13492. [2024-10-13 23:51:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13492 states, 13491 states have (on average 1.037358238825884) internal successors, (13995), 13491 states have internal predecessors, (13995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13492 states to 13492 states and 13995 transitions. [2024-10-13 23:51:06,931 INFO L78 Accepts]: Start accepts. Automaton has 13492 states and 13995 transitions. Word has length 1627 [2024-10-13 23:51:06,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:06,931 INFO L471 AbstractCegarLoop]: Abstraction has 13492 states and 13995 transitions. [2024-10-13 23:51:06,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.5) internal successors, (762), 4 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:06,932 INFO L276 IsEmpty]: Start isEmpty. Operand 13492 states and 13995 transitions. [2024-10-13 23:51:06,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1643 [2024-10-13 23:51:06,949 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:06,949 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2024-10-13 23:51:06,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 23:51:06,950 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:06,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:06,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1105504245, now seen corresponding path program 1 times [2024-10-13 23:51:06,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:06,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111129691] [2024-10-13 23:51:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:06,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5215 backedges. 3431 proven. 0 refuted. 0 times theorem prover too weak. 1784 trivial. 0 not checked. [2024-10-13 23:51:07,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:07,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111129691] [2024-10-13 23:51:07,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111129691] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:07,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:07,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:07,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247568302] [2024-10-13 23:51:07,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:07,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:07,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:07,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:07,785 INFO L87 Difference]: Start difference. First operand 13492 states and 13995 transitions. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:08,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:08,541 INFO L93 Difference]: Finished difference Result 27312 states and 28341 transitions. [2024-10-13 23:51:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:08,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 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 1642 [2024-10-13 23:51:08,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:08,554 INFO L225 Difference]: With dead ends: 27312 [2024-10-13 23:51:08,554 INFO L226 Difference]: Without dead ends: 14479 [2024-10-13 23:51:08,562 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 [2024-10-13 23:51:08,563 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 196 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:08,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 420 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:51:08,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2024-10-13 23:51:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 14150. [2024-10-13 23:51:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14150 states, 14149 states have (on average 1.0306735458336278) internal successors, (14583), 14149 states have internal predecessors, (14583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14150 states to 14150 states and 14583 transitions. [2024-10-13 23:51:08,702 INFO L78 Accepts]: Start accepts. Automaton has 14150 states and 14583 transitions. Word has length 1642 [2024-10-13 23:51:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:08,703 INFO L471 AbstractCegarLoop]: Abstraction has 14150 states and 14583 transitions. [2024-10-13 23:51:08,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand 14150 states and 14583 transitions. [2024-10-13 23:51:08,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1673 [2024-10-13 23:51:08,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:08,738 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:08,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-13 23:51:08,739 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:08,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:08,740 INFO L85 PathProgramCache]: Analyzing trace with hash 163458434, now seen corresponding path program 1 times [2024-10-13 23:51:08,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:08,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030947399] [2024-10-13 23:51:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:08,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 2871 proven. 258 refuted. 0 times theorem prover too weak. 2175 trivial. 0 not checked. [2024-10-13 23:51:10,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:10,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030947399] [2024-10-13 23:51:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030947399] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:10,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081185392] [2024-10-13 23:51:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:10,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:10,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:10,907 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) [2024-10-13 23:51:10,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 23:51:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:11,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 1920 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 23:51:11,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5304 backedges. 3600 proven. 0 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2024-10-13 23:51:12,910 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:12,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081185392] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:12,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:12,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-10-13 23:51:12,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907895244] [2024-10-13 23:51:12,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:12,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:51:12,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:51:12,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:51:12,915 INFO L87 Difference]: Start difference. First operand 14150 states and 14583 transitions. Second operand has 4 states, 4 states have (on average 193.25) internal successors, (773), 4 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:13,815 INFO L93 Difference]: Finished difference Result 27641 states and 28503 transitions. [2024-10-13 23:51:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:51:13,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 193.25) internal successors, (773), 4 states have internal predecessors, (773), 0 states have call successors, (0), 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 1672 [2024-10-13 23:51:13,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:13,826 INFO L225 Difference]: With dead ends: 27641 [2024-10-13 23:51:13,826 INFO L226 Difference]: Without dead ends: 14150 [2024-10-13 23:51:13,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1679 GetRequests, 1671 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-13 23:51:13,833 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 120 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:13,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 559 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:51:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14150 states. [2024-10-13 23:51:13,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14150 to 14150. [2024-10-13 23:51:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14150 states, 14149 states have (on average 1.030178811223408) internal successors, (14576), 14149 states have internal predecessors, (14576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14150 states to 14150 states and 14576 transitions. [2024-10-13 23:51:13,926 INFO L78 Accepts]: Start accepts. Automaton has 14150 states and 14576 transitions. Word has length 1672 [2024-10-13 23:51:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:13,927 INFO L471 AbstractCegarLoop]: Abstraction has 14150 states and 14576 transitions. [2024-10-13 23:51:13,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.25) internal successors, (773), 4 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 14150 states and 14576 transitions. [2024-10-13 23:51:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1780 [2024-10-13 23:51:13,952 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:13,952 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:13,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 23:51:14,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:14,153 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:14,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:14,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1232322900, now seen corresponding path program 1 times [2024-10-13 23:51:14,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:14,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104071031] [2024-10-13 23:51:14,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:14,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7135 backedges. 3329 proven. 258 refuted. 0 times theorem prover too weak. 3548 trivial. 0 not checked. [2024-10-13 23:51:16,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:16,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104071031] [2024-10-13 23:51:16,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104071031] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:16,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762966562] [2024-10-13 23:51:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:16,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:16,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:16,285 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) [2024-10-13 23:51:16,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 23:51:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:16,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:51:16,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:16,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7135 backedges. 4221 proven. 0 refuted. 0 times theorem prover too weak. 2914 trivial. 0 not checked. [2024-10-13 23:51:16,868 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:16,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762966562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:16,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:16,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-13 23:51:16,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373216532] [2024-10-13 23:51:16,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:16,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:16,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:16,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:51:16,871 INFO L87 Difference]: Start difference. First operand 14150 states and 14576 transitions. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:17,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:17,590 INFO L93 Difference]: Finished difference Result 31260 states and 32237 transitions. [2024-10-13 23:51:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:17,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 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 1779 [2024-10-13 23:51:17,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:17,602 INFO L225 Difference]: With dead ends: 31260 [2024-10-13 23:51:17,602 INFO L226 Difference]: Without dead ends: 15466 [2024-10-13 23:51:17,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1784 GetRequests, 1778 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:51:17,610 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 216 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:17,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 390 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-13 23:51:17,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15466 states. [2024-10-13 23:51:17,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15466 to 15466. [2024-10-13 23:51:17,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15466 states, 15465 states have (on average 1.0276753960556095) internal successors, (15893), 15465 states have internal predecessors, (15893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15466 states to 15466 states and 15893 transitions. [2024-10-13 23:51:17,721 INFO L78 Accepts]: Start accepts. Automaton has 15466 states and 15893 transitions. Word has length 1779 [2024-10-13 23:51:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:17,722 INFO L471 AbstractCegarLoop]: Abstraction has 15466 states and 15893 transitions. [2024-10-13 23:51:17,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:17,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15466 states and 15893 transitions. [2024-10-13 23:51:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1811 [2024-10-13 23:51:17,784 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:17,784 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:17,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 23:51:17,985 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 [2024-10-13 23:51:17,985 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:17,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:17,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1008673261, now seen corresponding path program 1 times [2024-10-13 23:51:17,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:17,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552606223] [2024-10-13 23:51:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:17,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6476 backedges. 3242 proven. 258 refuted. 0 times theorem prover too weak. 2976 trivial. 0 not checked. [2024-10-13 23:51:20,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552606223] [2024-10-13 23:51:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552606223] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060384198] [2024-10-13 23:51:20,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:20,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:20,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:20,075 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) [2024-10-13 23:51:20,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 23:51:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:20,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:51:20,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:21,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6476 backedges. 4172 proven. 0 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2024-10-13 23:51:21,213 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:21,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060384198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:21,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:21,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-13 23:51:21,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974056786] [2024-10-13 23:51:21,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:21,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:21,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:21,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:21,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:51:21,216 INFO L87 Difference]: Start difference. First operand 15466 states and 15893 transitions. Second operand has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:21,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:21,923 INFO L93 Difference]: Finished difference Result 31589 states and 32481 transitions. [2024-10-13 23:51:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:21,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 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 1810 [2024-10-13 23:51:21,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:21,938 INFO L225 Difference]: With dead ends: 31589 [2024-10-13 23:51:21,938 INFO L226 Difference]: Without dead ends: 16782 [2024-10-13 23:51:21,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1815 GetRequests, 1809 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:51:21,947 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 63 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:21,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 423 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:51:21,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16782 states. [2024-10-13 23:51:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16782 to 16782. [2024-10-13 23:51:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16782 states, 16781 states have (on average 1.0257434002741195) internal successors, (17213), 16781 states have internal predecessors, (17213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16782 states to 16782 states and 17213 transitions. [2024-10-13 23:51:22,166 INFO L78 Accepts]: Start accepts. Automaton has 16782 states and 17213 transitions. Word has length 1810 [2024-10-13 23:51:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:22,167 INFO L471 AbstractCegarLoop]: Abstraction has 16782 states and 17213 transitions. [2024-10-13 23:51:22,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 16782 states and 17213 transitions. [2024-10-13 23:51:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1857 [2024-10-13 23:51:22,211 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:22,211 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:22,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 23:51:22,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:22,413 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:22,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash -85316302, now seen corresponding path program 1 times [2024-10-13 23:51:22,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:22,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370965641] [2024-10-13 23:51:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:22,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7425 backedges. 3483 proven. 258 refuted. 0 times theorem prover too weak. 3684 trivial. 0 not checked. [2024-10-13 23:51:24,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:24,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370965641] [2024-10-13 23:51:24,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370965641] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:24,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609266223] [2024-10-13 23:51:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:24,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:24,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:24,574 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:51:24,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 23:51:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:25,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 2150 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:51:25,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7425 backedges. 4573 proven. 0 refuted. 0 times theorem prover too weak. 2852 trivial. 0 not checked. [2024-10-13 23:51:25,347 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:25,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609266223] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:25,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:25,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-13 23:51:25,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175283024] [2024-10-13 23:51:25,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:25,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:25,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:51:25,350 INFO L87 Difference]: Start difference. First operand 16782 states and 17213 transitions. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:26,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:26,046 INFO L93 Difference]: Finished difference Result 34550 states and 35455 transitions. [2024-10-13 23:51:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:26,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 1856 [2024-10-13 23:51:26,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:26,062 INFO L225 Difference]: With dead ends: 34550 [2024-10-13 23:51:26,062 INFO L226 Difference]: Without dead ends: 18427 [2024-10-13 23:51:26,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1861 GetRequests, 1855 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 23:51:26,073 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 225 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:26,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 421 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:51:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18427 states. [2024-10-13 23:51:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18427 to 18098. [2024-10-13 23:51:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18098 states, 18097 states have (on average 1.0249212576670166) internal successors, (18548), 18097 states have internal predecessors, (18548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:26,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18098 states to 18098 states and 18548 transitions. [2024-10-13 23:51:26,214 INFO L78 Accepts]: Start accepts. Automaton has 18098 states and 18548 transitions. Word has length 1856 [2024-10-13 23:51:26,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:26,214 INFO L471 AbstractCegarLoop]: Abstraction has 18098 states and 18548 transitions. [2024-10-13 23:51:26,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:26,215 INFO L276 IsEmpty]: Start isEmpty. Operand 18098 states and 18548 transitions. [2024-10-13 23:51:26,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1862 [2024-10-13 23:51:26,236 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:26,237 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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] [2024-10-13 23:51:26,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 23:51:26,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 23:51:26,438 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:26,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:26,438 INFO L85 PathProgramCache]: Analyzing trace with hash 598024556, now seen corresponding path program 1 times [2024-10-13 23:51:26,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:26,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433248845] [2024-10-13 23:51:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:26,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6619 backedges. 3364 proven. 1840 refuted. 0 times theorem prover too weak. 1415 trivial. 0 not checked. [2024-10-13 23:51:29,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:29,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433248845] [2024-10-13 23:51:29,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433248845] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:29,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814122866] [2024-10-13 23:51:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:29,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:29,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:29,487 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:51:29,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 23:51:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:29,884 INFO L255 TraceCheckSpWp]: Trace formula consists of 2133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 23:51:29,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6619 backedges. 3599 proven. 0 refuted. 0 times theorem prover too weak. 3020 trivial. 0 not checked. [2024-10-13 23:51:30,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814122866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:30,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:30,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-13 23:51:30,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500461487] [2024-10-13 23:51:30,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:30,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:30,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:30,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:30,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:51:30,224 INFO L87 Difference]: Start difference. First operand 18098 states and 18548 transitions. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:30,905 INFO L93 Difference]: Finished difference Result 36524 states and 37449 transitions. [2024-10-13 23:51:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:30,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 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 1861 [2024-10-13 23:51:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:30,927 INFO L225 Difference]: With dead ends: 36524 [2024-10-13 23:51:30,927 INFO L226 Difference]: Without dead ends: 19085 [2024-10-13 23:51:30,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1869 GetRequests, 1865 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:51:30,940 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 95 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:30,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 54 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-13 23:51:30,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19085 states. [2024-10-13 23:51:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19085 to 19085. [2024-10-13 23:51:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19085 states, 19084 states have (on average 1.0248375602599036) internal successors, (19558), 19084 states have internal predecessors, (19558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:31,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19085 states to 19085 states and 19558 transitions. [2024-10-13 23:51:31,078 INFO L78 Accepts]: Start accepts. Automaton has 19085 states and 19558 transitions. Word has length 1861 [2024-10-13 23:51:31,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:31,079 INFO L471 AbstractCegarLoop]: Abstraction has 19085 states and 19558 transitions. [2024-10-13 23:51:31,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 19085 states and 19558 transitions. [2024-10-13 23:51:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1908 [2024-10-13 23:51:31,102 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:31,103 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:31,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 23:51:31,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:31,304 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:31,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:31,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1969415793, now seen corresponding path program 1 times [2024-10-13 23:51:31,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:31,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440537195] [2024-10-13 23:51:31,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:31,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 3742 proven. 0 refuted. 0 times theorem prover too weak. 3808 trivial. 0 not checked. [2024-10-13 23:51:33,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:33,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440537195] [2024-10-13 23:51:33,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440537195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:33,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 23:51:33,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 23:51:33,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700084980] [2024-10-13 23:51:33,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:33,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:33,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:33,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:33,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 23:51:33,037 INFO L87 Difference]: Start difference. First operand 19085 states and 19558 transitions. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:33,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:33,866 INFO L93 Difference]: Finished difference Result 41130 states and 42167 transitions. [2024-10-13 23:51:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 23:51:33,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 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 1907 [2024-10-13 23:51:33,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:33,885 INFO L225 Difference]: With dead ends: 41130 [2024-10-13 23:51:33,885 INFO L226 Difference]: Without dead ends: 22704 [2024-10-13 23:51:33,896 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 [2024-10-13 23:51:33,897 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 206 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:33,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 43 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 23:51:33,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22704 states. [2024-10-13 23:51:34,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22704 to 21059. [2024-10-13 23:51:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21059 states, 21058 states have (on average 1.0251210941209992) internal successors, (21587), 21058 states have internal predecessors, (21587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21059 states to 21059 states and 21587 transitions. [2024-10-13 23:51:34,070 INFO L78 Accepts]: Start accepts. Automaton has 21059 states and 21587 transitions. Word has length 1907 [2024-10-13 23:51:34,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:34,071 INFO L471 AbstractCegarLoop]: Abstraction has 21059 states and 21587 transitions. [2024-10-13 23:51:34,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:34,071 INFO L276 IsEmpty]: Start isEmpty. Operand 21059 states and 21587 transitions. [2024-10-13 23:51:34,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1911 [2024-10-13 23:51:34,096 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:34,096 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 23:51:34,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-13 23:51:34,096 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:34,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash -183894163, now seen corresponding path program 1 times [2024-10-13 23:51:34,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:34,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201717856] [2024-10-13 23:51:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:34,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:36,055 INFO L134 CoverageAnalysis]: Checked inductivity of 7408 backedges. 3562 proven. 258 refuted. 0 times theorem prover too weak. 3588 trivial. 0 not checked. [2024-10-13 23:51:36,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:36,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201717856] [2024-10-13 23:51:36,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201717856] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:36,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072840354] [2024-10-13 23:51:36,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:36,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:36,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:36,058 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:51:36,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 23:51:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:36,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:51:36,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7408 backedges. 3725 proven. 0 refuted. 0 times theorem prover too weak. 3683 trivial. 0 not checked. [2024-10-13 23:51:37,401 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:37,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072840354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:37,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:37,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-13 23:51:37,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574514110] [2024-10-13 23:51:37,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:37,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 23:51:37,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:37,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 23:51:37,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:51:37,404 INFO L87 Difference]: Start difference. First operand 21059 states and 21587 transitions. Second operand has 4 states, 4 states have (on average 186.75) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 23:51:38,343 INFO L93 Difference]: Finished difference Result 41459 states and 42511 transitions. [2024-10-13 23:51:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 23:51:38,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 186.75) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 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 1910 [2024-10-13 23:51:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 23:51:38,360 INFO L225 Difference]: With dead ends: 41459 [2024-10-13 23:51:38,361 INFO L226 Difference]: Without dead ends: 21059 [2024-10-13 23:51:38,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1915 GetRequests, 1908 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-13 23:51:38,375 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 201 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-13 23:51:38,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 34 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-13 23:51:38,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21059 states. [2024-10-13 23:51:38,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21059 to 20730. [2024-10-13 23:51:38,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20730 states, 20729 states have (on average 1.0251338704230788) internal successors, (21250), 20729 states have internal predecessors, (21250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20730 states to 20730 states and 21250 transitions. [2024-10-13 23:51:38,545 INFO L78 Accepts]: Start accepts. Automaton has 20730 states and 21250 transitions. Word has length 1910 [2024-10-13 23:51:38,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 23:51:38,546 INFO L471 AbstractCegarLoop]: Abstraction has 20730 states and 21250 transitions. [2024-10-13 23:51:38,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 186.75) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 23:51:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 20730 states and 21250 transitions. [2024-10-13 23:51:38,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1949 [2024-10-13 23:51:38,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 23:51:38,573 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 23:51:38,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-13 23:51:38,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:38,774 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 23:51:38,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 23:51:38,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2021262790, now seen corresponding path program 1 times [2024-10-13 23:51:38,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 23:51:38,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522165786] [2024-10-13 23:51:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:38,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 23:51:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8366 backedges. 6236 proven. 41 refuted. 0 times theorem prover too weak. 2089 trivial. 0 not checked. [2024-10-13 23:51:41,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 23:51:41,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522165786] [2024-10-13 23:51:41,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522165786] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 23:51:41,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758057290] [2024-10-13 23:51:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 23:51:41,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 23:51:41,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 23:51:41,040 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 23:51:41,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 23:51:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 23:51:41,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 23:51:41,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 23:51:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8366 backedges. 4894 proven. 0 refuted. 0 times theorem prover too weak. 3472 trivial. 0 not checked. [2024-10-13 23:51:41,908 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 23:51:41,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758057290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 23:51:41,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 23:51:41,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-13 23:51:41,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777116016] [2024-10-13 23:51:41,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 23:51:41,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 23:51:41,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 23:51:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 23:51:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-13 23:51:41,911 INFO L87 Difference]: Start difference. First operand 20730 states and 21250 transitions. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)