./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/Problem12_label45.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label45.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 8467039cd3b163d296fd08bc696cd2f7637ba962b4c476281adfe8f379f9ad63 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:08:28,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:08:28,744 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:08:28,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:08:28,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:08:28,780 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:08:28,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:08:28,781 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:08:28,781 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:08:28,782 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:08:28,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:08:28,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:08:28,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:08:28,788 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:08:28,789 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:08:28,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:08:28,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:08:28,789 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:08:28,790 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:08:28,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:08:28,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:08:28,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:08:28,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:08:28,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:08:28,792 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:08:28,792 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:08:28,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:08:28,793 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:08:28,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:08:28,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:08:28,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:08:28,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:08:28,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:08:28,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:08:28,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:08:28,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:08:28,795 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:08:28,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:08:28,795 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:08:28,796 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:08:28,796 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:08:28,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:08:28,797 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8467039cd3b163d296fd08bc696cd2f7637ba962b4c476281adfe8f379f9ad63 [2024-10-23 21:08:29,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:08:29,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:08:29,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:08:29,097 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:08:29,097 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:08:29,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label45.c [2024-10-23 21:08:30,477 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:08:30,917 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:08:30,919 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label45.c [2024-10-23 21:08:30,955 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e0422339/cd58516609c44e12be5462c7d699dc82/FLAG1bf454870 [2024-10-23 21:08:30,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e0422339/cd58516609c44e12be5462c7d699dc82 [2024-10-23 21:08:30,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:08:30,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:08:30,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:08:30,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:08:30,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:08:30,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:08:30" (1/1) ... [2024-10-23 21:08:30,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eff78c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:30, skipping insertion in model container [2024-10-23 21:08:30,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:08:30" (1/1) ... [2024-10-23 21:08:31,093 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:08:31,361 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/Problem12_label45.c[6354,6367] [2024-10-23 21:08:32,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:08:32,072 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:08:32,098 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/Problem12_label45.c[6354,6367] [2024-10-23 21:08:32,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:08:32,554 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:08:32,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32 WrapperNode [2024-10-23 21:08:32,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:08:32,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:08:32,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:08:32,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:08:32,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:32,615 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:32,955 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-23 21:08:32,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:08:32,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:08:32,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:08:32,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:08:32,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:32,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:33,080 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:33,225 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:08:33,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:33,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:33,390 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:33,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:33,462 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:33,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:33,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:08:33,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:08:33,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:08:33,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:08:33,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (1/1) ... [2024-10-23 21:08:33,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:08:33,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:08:33,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:08:33,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:08:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:08:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:08:33,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:08:33,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:08:33,691 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:08:33,693 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:08:37,857 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-23 21:08:37,857 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:08:37,933 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:08:37,937 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:08:37,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:08:37 BoogieIcfgContainer [2024-10-23 21:08:37,937 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:08:37,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:08:37,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:08:37,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:08:37,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:08:30" (1/3) ... [2024-10-23 21:08:37,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31882841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:08:37, skipping insertion in model container [2024-10-23 21:08:37,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:08:32" (2/3) ... [2024-10-23 21:08:37,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31882841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:08:37, skipping insertion in model container [2024-10-23 21:08:37,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:08:37" (3/3) ... [2024-10-23 21:08:37,948 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label45.c [2024-10-23 21:08:37,964 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:08:37,965 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:08:38,062 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:08:38,068 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;@821eac8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:08:38,069 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:08:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:38,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-23 21:08:38,083 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:38,084 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:38,084 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:38,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash -181323884, now seen corresponding path program 1 times [2024-10-23 21:08:38,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:38,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395033121] [2024-10-23 21:08:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:38,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:38,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:38,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395033121] [2024-10-23 21:08:38,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395033121] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:38,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:38,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:08:38,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463368534] [2024-10-23 21:08:38,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:38,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:08:38,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:08:38,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:08:38,322 INFO L87 Difference]: Start difference. First operand has 756 states, 754 states have (on average 1.993368700265252) internal successors, (1503), 755 states have internal predecessors, (1503), 0 states have call successors, (0), 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 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:38,413 INFO L93 Difference]: Finished difference Result 1511 states and 3005 transitions. [2024-10-23 21:08:38,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:08:38,419 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-10-23 21:08:38,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:38,444 INFO L225 Difference]: With dead ends: 1511 [2024-10-23 21:08:38,444 INFO L226 Difference]: Without dead ends: 754 [2024-10-23 21:08:38,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:08:38,453 INFO L432 NwaCegarLoop]: 1438 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, 1438 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:38,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1438 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:08:38,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-10-23 21:08:38,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-10-23 21:08:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2024-10-23 21:08:38,555 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 50 [2024-10-23 21:08:38,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:38,556 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2024-10-23 21:08:38,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2024-10-23 21:08:38,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-23 21:08:38,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:38,559 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:38,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:08:38,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:38,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash 373144034, now seen corresponding path program 1 times [2024-10-23 21:08:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:38,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873966476] [2024-10-23 21:08:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:38,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:38,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:38,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873966476] [2024-10-23 21:08:38,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873966476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:38,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:38,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:08:38,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301093698] [2024-10-23 21:08:38,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:38,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:08:38,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:38,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:08:38,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:38,830 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:42,082 INFO L93 Difference]: Finished difference Result 2258 states and 4311 transitions. [2024-10-23 21:08:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:08:42,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2024-10-23 21:08:42,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:42,091 INFO L225 Difference]: With dead ends: 2258 [2024-10-23 21:08:42,091 INFO L226 Difference]: Without dead ends: 1505 [2024-10-23 21:08:42,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:42,094 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 767 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:42,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 426 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-10-23 21:08:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-10-23 21:08:42,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2024-10-23 21:08:42,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1504 states have (on average 1.6389627659574468) internal successors, (2465), 1504 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:42,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2465 transitions. [2024-10-23 21:08:42,124 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2465 transitions. Word has length 50 [2024-10-23 21:08:42,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:42,125 INFO L471 AbstractCegarLoop]: Abstraction has 1505 states and 2465 transitions. [2024-10-23 21:08:42,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 2 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2465 transitions. [2024-10-23 21:08:42,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-23 21:08:42,128 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:42,129 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:08:42,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:08:42,130 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:42,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:42,131 INFO L85 PathProgramCache]: Analyzing trace with hash -501988206, now seen corresponding path program 1 times [2024-10-23 21:08:42,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:42,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263219544] [2024-10-23 21:08:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:42,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:42,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:42,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263219544] [2024-10-23 21:08:42,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263219544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:42,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:42,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:08:42,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787284720] [2024-10-23 21:08:42,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:42,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:08:42,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:42,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:08:42,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:08:42,568 INFO L87 Difference]: Start difference. First operand 1505 states and 2465 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:46,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:46,204 INFO L93 Difference]: Finished difference Result 4548 states and 7429 transitions. [2024-10-23 21:08:46,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:08:46,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-10-23 21:08:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:46,216 INFO L225 Difference]: With dead ends: 4548 [2024-10-23 21:08:46,216 INFO L226 Difference]: Without dead ends: 3007 [2024-10-23 21:08:46,219 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 [2024-10-23 21:08:46,220 INFO L432 NwaCegarLoop]: 636 mSDtfsCounter, 703 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:46,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 649 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-10-23 21:08:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2024-10-23 21:08:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 3007. [2024-10-23 21:08:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3007 states, 3006 states have (on average 1.3416500332667998) internal successors, (4033), 3006 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3007 states to 3007 states and 4033 transitions. [2024-10-23 21:08:46,277 INFO L78 Accepts]: Start accepts. Automaton has 3007 states and 4033 transitions. Word has length 121 [2024-10-23 21:08:46,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:46,278 INFO L471 AbstractCegarLoop]: Abstraction has 3007 states and 4033 transitions. [2024-10-23 21:08:46,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:46,278 INFO L276 IsEmpty]: Start isEmpty. Operand 3007 states and 4033 transitions. [2024-10-23 21:08:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-10-23 21:08:46,281 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:46,281 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:46,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:08:46,284 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:46,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1276420049, now seen corresponding path program 1 times [2024-10-23 21:08:46,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:46,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099187448] [2024-10-23 21:08:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:46,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:46,627 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:08:46,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:46,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099187448] [2024-10-23 21:08:46,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099187448] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:46,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:46,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:08:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517449569] [2024-10-23 21:08:46,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:46,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:08:46,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:46,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:08:46,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:08:46,630 INFO L87 Difference]: Start difference. First operand 3007 states and 4033 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:50,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:50,326 INFO L93 Difference]: Finished difference Result 9768 states and 12891 transitions. [2024-10-23 21:08:50,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:08:50,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2024-10-23 21:08:50,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:50,350 INFO L225 Difference]: With dead ends: 9768 [2024-10-23 21:08:50,351 INFO L226 Difference]: Without dead ends: 6762 [2024-10-23 21:08:50,358 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 [2024-10-23 21:08:50,361 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 2093 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4275 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 4842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 4275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:50,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 449 Invalid, 4842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 4275 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-23 21:08:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2024-10-23 21:08:50,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2024-10-23 21:08:50,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 1.2875314302617955) internal successors, (8705), 6761 states have internal predecessors, (8705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 8705 transitions. [2024-10-23 21:08:50,488 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 8705 transitions. Word has length 159 [2024-10-23 21:08:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:50,489 INFO L471 AbstractCegarLoop]: Abstraction has 6762 states and 8705 transitions. [2024-10-23 21:08:50,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:50,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 8705 transitions. [2024-10-23 21:08:50,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-10-23 21:08:50,500 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:50,500 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:50,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:08:50,501 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:50,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:50,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1028253555, now seen corresponding path program 1 times [2024-10-23 21:08:50,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:50,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201195926] [2024-10-23 21:08:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:50,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:08:51,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:51,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201195926] [2024-10-23 21:08:51,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201195926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:51,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:51,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:08:51,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810617352] [2024-10-23 21:08:51,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:51,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:08:51,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:08:51,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:08:51,083 INFO L87 Difference]: Start difference. First operand 6762 states and 8705 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:54,298 INFO L93 Difference]: Finished difference Result 15815 states and 21395 transitions. [2024-10-23 21:08:54,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:08:54,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 262 [2024-10-23 21:08:54,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:54,322 INFO L225 Difference]: With dead ends: 15815 [2024-10-23 21:08:54,322 INFO L226 Difference]: Without dead ends: 9768 [2024-10-23 21:08:54,332 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 [2024-10-23 21:08:54,334 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 850 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3466 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 3466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:54,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 491 Invalid, 4019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 3466 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:08:54,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9768 states. [2024-10-23 21:08:54,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9768 to 9766. [2024-10-23 21:08:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.273220686123912) internal successors, (12433), 9765 states have internal predecessors, (12433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12433 transitions. [2024-10-23 21:08:54,512 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12433 transitions. Word has length 262 [2024-10-23 21:08:54,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:54,513 INFO L471 AbstractCegarLoop]: Abstraction has 9766 states and 12433 transitions. [2024-10-23 21:08:54,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:54,513 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12433 transitions. [2024-10-23 21:08:54,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-10-23 21:08:54,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:54,517 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:54,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:08:54,517 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:54,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:54,518 INFO L85 PathProgramCache]: Analyzing trace with hash -647443779, now seen corresponding path program 1 times [2024-10-23 21:08:54,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:54,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8000365] [2024-10-23 21:08:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:54,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-23 21:08:54,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:54,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8000365] [2024-10-23 21:08:54,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8000365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:54,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:54,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:08:54,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287263074] [2024-10-23 21:08:54,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:54,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:08:54,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:08:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:54,782 INFO L87 Difference]: Start difference. First operand 9766 states and 12433 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:57,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:08:57,392 INFO L93 Difference]: Finished difference Result 26290 states and 34156 transitions. [2024-10-23 21:08:57,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:08:57,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 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 265 [2024-10-23 21:08:57,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:08:57,436 INFO L225 Difference]: With dead ends: 26290 [2024-10-23 21:08:57,436 INFO L226 Difference]: Without dead ends: 17276 [2024-10-23 21:08:57,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:57,450 INFO L432 NwaCegarLoop]: 590 mSDtfsCounter, 619 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:08:57,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 596 Invalid, 2816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-23 21:08:57,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17276 states. [2024-10-23 21:08:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17276 to 16525. [2024-10-23 21:08:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16525 states, 16524 states have (on average 1.2063664972161705) internal successors, (19934), 16524 states have internal predecessors, (19934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16525 states to 16525 states and 19934 transitions. [2024-10-23 21:08:57,702 INFO L78 Accepts]: Start accepts. Automaton has 16525 states and 19934 transitions. Word has length 265 [2024-10-23 21:08:57,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:08:57,703 INFO L471 AbstractCegarLoop]: Abstraction has 16525 states and 19934 transitions. [2024-10-23 21:08:57,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:08:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 16525 states and 19934 transitions. [2024-10-23 21:08:57,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-10-23 21:08:57,709 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:08:57,710 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:08:57,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:08:57,710 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:08:57,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:08:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1736045612, now seen corresponding path program 1 times [2024-10-23 21:08:57,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:08:57,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699959889] [2024-10-23 21:08:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:08:57,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:08:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:08:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 21:08:58,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:08:58,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699959889] [2024-10-23 21:08:58,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699959889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:08:58,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:08:58,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:08:58,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891045955] [2024-10-23 21:08:58,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:08:58,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:08:58,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:08:58,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:08:58,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:08:58,056 INFO L87 Difference]: Start difference. First operand 16525 states and 19934 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:00,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:00,815 INFO L93 Difference]: Finished difference Result 32298 states and 39111 transitions. [2024-10-23 21:09:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:00,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 280 [2024-10-23 21:09:00,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:00,844 INFO L225 Difference]: With dead ends: 32298 [2024-10-23 21:09:00,845 INFO L226 Difference]: Without dead ends: 16525 [2024-10-23 21:09:00,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:00,862 INFO L432 NwaCegarLoop]: 1231 mSDtfsCounter, 696 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:00,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 1238 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:09:00,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16525 states. [2024-10-23 21:09:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16525 to 15774. [2024-10-23 21:09:01,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15774 states, 15773 states have (on average 1.1770747479870665) internal successors, (18566), 15773 states have internal predecessors, (18566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 18566 transitions. [2024-10-23 21:09:01,050 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 18566 transitions. Word has length 280 [2024-10-23 21:09:01,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:01,051 INFO L471 AbstractCegarLoop]: Abstraction has 15774 states and 18566 transitions. [2024-10-23 21:09:01,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:01,053 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 18566 transitions. [2024-10-23 21:09:01,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-10-23 21:09:01,056 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:01,057 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:01,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:09:01,057 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:01,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:01,058 INFO L85 PathProgramCache]: Analyzing trace with hash -638679259, now seen corresponding path program 1 times [2024-10-23 21:09:01,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:01,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641222977] [2024-10-23 21:09:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:01,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-10-23 21:09:01,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:01,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641222977] [2024-10-23 21:09:01,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641222977] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:01,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:01,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:01,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003272015] [2024-10-23 21:09:01,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:01,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:01,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:01,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:01,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:01,267 INFO L87 Difference]: Start difference. First operand 15774 states and 18566 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:04,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:04,132 INFO L93 Difference]: Finished difference Result 39057 states and 46230 transitions. [2024-10-23 21:09:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:04,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 281 [2024-10-23 21:09:04,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:04,174 INFO L225 Difference]: With dead ends: 39057 [2024-10-23 21:09:04,174 INFO L226 Difference]: Without dead ends: 24035 [2024-10-23 21:09:04,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:04,194 INFO L432 NwaCegarLoop]: 1354 mSDtfsCounter, 710 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 3011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:04,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1361 Invalid, 3011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 2708 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:09:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24035 states. [2024-10-23 21:09:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24035 to 22533. [2024-10-23 21:09:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22533 states, 22532 states have (on average 1.1770371027871471) internal successors, (26521), 22532 states have internal predecessors, (26521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 26521 transitions. [2024-10-23 21:09:04,473 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 26521 transitions. Word has length 281 [2024-10-23 21:09:04,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:04,474 INFO L471 AbstractCegarLoop]: Abstraction has 22533 states and 26521 transitions. [2024-10-23 21:09:04,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:04,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 26521 transitions. [2024-10-23 21:09:04,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-10-23 21:09:04,480 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:04,480 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:04,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:09:04,481 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:04,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1767355032, now seen corresponding path program 1 times [2024-10-23 21:09:04,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:04,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223635924] [2024-10-23 21:09:04,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:04,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:04,683 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-10-23 21:09:04,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:04,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223635924] [2024-10-23 21:09:04,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223635924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:04,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:04,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:04,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88890059] [2024-10-23 21:09:04,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:04,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:04,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:04,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:04,687 INFO L87 Difference]: Start difference. First operand 22533 states and 26521 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:07,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:07,102 INFO L93 Difference]: Finished difference Result 44314 states and 52285 transitions. [2024-10-23 21:09:07,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:07,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 327 [2024-10-23 21:09:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:07,136 INFO L225 Difference]: With dead ends: 44314 [2024-10-23 21:09:07,136 INFO L226 Difference]: Without dead ends: 22533 [2024-10-23 21:09:07,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:07,158 INFO L432 NwaCegarLoop]: 974 mSDtfsCounter, 776 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:07,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 981 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:09:07,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22533 states. [2024-10-23 21:09:07,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22533 to 22533. [2024-10-23 21:09:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22533 states, 22532 states have (on average 1.142552813775963) internal successors, (25744), 22532 states have internal predecessors, (25744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:07,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 25744 transitions. [2024-10-23 21:09:07,471 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 25744 transitions. Word has length 327 [2024-10-23 21:09:07,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:07,472 INFO L471 AbstractCegarLoop]: Abstraction has 22533 states and 25744 transitions. [2024-10-23 21:09:07,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:07,473 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 25744 transitions. [2024-10-23 21:09:07,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-10-23 21:09:07,479 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:07,479 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:07,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:09:07,479 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:07,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:07,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1567524125, now seen corresponding path program 1 times [2024-10-23 21:09:07,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:07,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103582376] [2024-10-23 21:09:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:07,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-23 21:09:07,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:07,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103582376] [2024-10-23 21:09:07,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103582376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:07,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:07,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:07,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513647815] [2024-10-23 21:09:07,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:07,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:07,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:07,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:07,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:07,687 INFO L87 Difference]: Start difference. First operand 22533 states and 25744 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:10,077 INFO L93 Difference]: Finished difference Result 56330 states and 65041 transitions. [2024-10-23 21:09:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:10,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 349 [2024-10-23 21:09:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:10,105 INFO L225 Difference]: With dead ends: 56330 [2024-10-23 21:09:10,105 INFO L226 Difference]: Without dead ends: 34549 [2024-10-23 21:09:10,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:10,114 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 788 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:10,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 233 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2068 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:09:10,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34549 states. [2024-10-23 21:09:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34549 to 34549. [2024-10-23 21:09:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34549 states, 34548 states have (on average 1.1204411253907607) internal successors, (38709), 34548 states have internal predecessors, (38709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:10,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34549 states to 34549 states and 38709 transitions. [2024-10-23 21:09:10,460 INFO L78 Accepts]: Start accepts. Automaton has 34549 states and 38709 transitions. Word has length 349 [2024-10-23 21:09:10,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:10,461 INFO L471 AbstractCegarLoop]: Abstraction has 34549 states and 38709 transitions. [2024-10-23 21:09:10,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:10,461 INFO L276 IsEmpty]: Start isEmpty. Operand 34549 states and 38709 transitions. [2024-10-23 21:09:10,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-10-23 21:09:10,468 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:10,468 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:10,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:09:10,469 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:10,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:10,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2097385107, now seen corresponding path program 1 times [2024-10-23 21:09:10,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:10,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243534395] [2024-10-23 21:09:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:10,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-10-23 21:09:10,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:10,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243534395] [2024-10-23 21:09:10,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243534395] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:10,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:10,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:10,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226363893] [2024-10-23 21:09:10,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:10,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:10,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:10,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:10,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:10,741 INFO L87 Difference]: Start difference. First operand 34549 states and 38709 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:13,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:13,418 INFO L93 Difference]: Finished difference Result 82615 states and 93714 transitions. [2024-10-23 21:09:13,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:13,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 381 [2024-10-23 21:09:13,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:13,458 INFO L225 Difference]: With dead ends: 82615 [2024-10-23 21:09:13,458 INFO L226 Difference]: Without dead ends: 45814 [2024-10-23 21:09:13,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:13,472 INFO L432 NwaCegarLoop]: 1290 mSDtfsCounter, 742 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:13,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1297 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:09:13,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45814 states. [2024-10-23 21:09:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45814 to 45063. [2024-10-23 21:09:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45063 states, 45062 states have (on average 1.1095379699081265) internal successors, (49998), 45062 states have internal predecessors, (49998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:13,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45063 states to 45063 states and 49998 transitions. [2024-10-23 21:09:13,867 INFO L78 Accepts]: Start accepts. Automaton has 45063 states and 49998 transitions. Word has length 381 [2024-10-23 21:09:13,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:13,868 INFO L471 AbstractCegarLoop]: Abstraction has 45063 states and 49998 transitions. [2024-10-23 21:09:13,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:13,868 INFO L276 IsEmpty]: Start isEmpty. Operand 45063 states and 49998 transitions. [2024-10-23 21:09:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-10-23 21:09:13,883 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:13,883 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:09:13,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:09:13,884 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:13,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:13,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1983757023, now seen corresponding path program 1 times [2024-10-23 21:09:13,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:13,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465329137] [2024-10-23 21:09:13,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:13,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 647 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-10-23 21:09:14,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:14,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465329137] [2024-10-23 21:09:14,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465329137] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:14,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:14,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:14,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861369055] [2024-10-23 21:09:14,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:14,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:14,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:14,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:14,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:14,161 INFO L87 Difference]: Start difference. First operand 45063 states and 49998 transitions. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:16,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:16,770 INFO L93 Difference]: Finished difference Result 90125 states and 100019 transitions. [2024-10-23 21:09:16,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:16,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 515 [2024-10-23 21:09:16,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:16,809 INFO L225 Difference]: With dead ends: 90125 [2024-10-23 21:09:16,809 INFO L226 Difference]: Without dead ends: 45814 [2024-10-23 21:09:16,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:16,827 INFO L432 NwaCegarLoop]: 250 mSDtfsCounter, 706 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 615 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 615 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:16,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 256 Invalid, 2889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [615 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:09:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45814 states. [2024-10-23 21:09:17,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45814 to 44312. [2024-10-23 21:09:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44312 states, 44311 states have (on average 1.1050754891561914) internal successors, (48967), 44311 states have internal predecessors, (48967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44312 states to 44312 states and 48967 transitions. [2024-10-23 21:09:17,154 INFO L78 Accepts]: Start accepts. Automaton has 44312 states and 48967 transitions. Word has length 515 [2024-10-23 21:09:17,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:17,155 INFO L471 AbstractCegarLoop]: Abstraction has 44312 states and 48967 transitions. [2024-10-23 21:09:17,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:17,156 INFO L276 IsEmpty]: Start isEmpty. Operand 44312 states and 48967 transitions. [2024-10-23 21:09:17,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-10-23 21:09:17,171 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:17,171 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:17,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:09:17,172 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:17,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1001463681, now seen corresponding path program 1 times [2024-10-23 21:09:17,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:17,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631878924] [2024-10-23 21:09:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 663 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-10-23 21:09:17,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:17,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631878924] [2024-10-23 21:09:17,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631878924] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:17,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:17,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:17,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119570074] [2024-10-23 21:09:17,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:17,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:17,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:17,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:17,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:17,502 INFO L87 Difference]: Start difference. First operand 44312 states and 48967 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:20,089 INFO L93 Difference]: Finished difference Result 90125 states and 99473 transitions. [2024-10-23 21:09:20,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:20,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 526 [2024-10-23 21:09:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:20,155 INFO L225 Difference]: With dead ends: 90125 [2024-10-23 21:09:20,155 INFO L226 Difference]: Without dead ends: 46565 [2024-10-23 21:09:20,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:20,183 INFO L432 NwaCegarLoop]: 1167 mSDtfsCounter, 738 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:20,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1173 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 2074 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-23 21:09:20,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46565 states. [2024-10-23 21:09:20,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46565 to 45814. [2024-10-23 21:09:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45814 states, 45813 states have (on average 1.0676882107698689) internal successors, (48914), 45813 states have internal predecessors, (48914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45814 states to 45814 states and 48914 transitions. [2024-10-23 21:09:20,612 INFO L78 Accepts]: Start accepts. Automaton has 45814 states and 48914 transitions. Word has length 526 [2024-10-23 21:09:20,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:20,612 INFO L471 AbstractCegarLoop]: Abstraction has 45814 states and 48914 transitions. [2024-10-23 21:09:20,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 45814 states and 48914 transitions. [2024-10-23 21:09:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2024-10-23 21:09:20,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:20,628 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:20,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:09:20,628 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:20,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:20,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1123471483, now seen corresponding path program 1 times [2024-10-23 21:09:20,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:20,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283449037] [2024-10-23 21:09:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:20,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 532 proven. 229 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 21:09:21,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:21,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283449037] [2024-10-23 21:09:21,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283449037] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:09:21,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521818390] [2024-10-23 21:09:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:21,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:09:21,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:09:21,599 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:09:21,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:09:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:21,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:09:21,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:09:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2024-10-23 21:09:21,990 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:09:21,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521818390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:21,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:09:21,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:09:21,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584686530] [2024-10-23 21:09:21,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:21,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:21,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:21,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:21,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:09:21,996 INFO L87 Difference]: Start difference. First operand 45814 states and 48914 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:24,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:24,442 INFO L93 Difference]: Finished difference Result 106647 states and 114595 transitions. [2024-10-23 21:09:24,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:24,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 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 552 [2024-10-23 21:09:24,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:24,508 INFO L225 Difference]: With dead ends: 106647 [2024-10-23 21:09:24,508 INFO L226 Difference]: Without dead ends: 61585 [2024-10-23 21:09:24,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:09:24,543 INFO L432 NwaCegarLoop]: 1370 mSDtfsCounter, 649 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:24,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1377 Invalid, 2584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [454 Valid, 2130 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:09:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61585 states. [2024-10-23 21:09:24,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61585 to 54826. [2024-10-23 21:09:24,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54826 states, 54825 states have (on average 1.062453260373917) internal successors, (58249), 54825 states have internal predecessors, (58249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54826 states to 54826 states and 58249 transitions. [2024-10-23 21:09:25,026 INFO L78 Accepts]: Start accepts. Automaton has 54826 states and 58249 transitions. Word has length 552 [2024-10-23 21:09:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:25,027 INFO L471 AbstractCegarLoop]: Abstraction has 54826 states and 58249 transitions. [2024-10-23 21:09:25,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 54826 states and 58249 transitions. [2024-10-23 21:09:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2024-10-23 21:09:25,037 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:25,037 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:25,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:09:25,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-23 21:09:25,238 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:25,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:25,239 INFO L85 PathProgramCache]: Analyzing trace with hash 840019476, now seen corresponding path program 1 times [2024-10-23 21:09:25,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:25,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385532142] [2024-10-23 21:09:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 706 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-23 21:09:25,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:25,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385532142] [2024-10-23 21:09:25,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385532142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:25,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:25,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:25,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751023305] [2024-10-23 21:09:25,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:25,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:25,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:25,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:25,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:25,741 INFO L87 Difference]: Start difference. First operand 54826 states and 58249 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:28,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:28,460 INFO L93 Difference]: Finished difference Result 144948 states and 154128 transitions. [2024-10-23 21:09:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:28,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 553 [2024-10-23 21:09:28,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:28,818 INFO L225 Difference]: With dead ends: 144948 [2024-10-23 21:09:28,819 INFO L226 Difference]: Without dead ends: 90874 [2024-10-23 21:09:28,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:28,844 INFO L432 NwaCegarLoop]: 1314 mSDtfsCounter, 658 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:28,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1320 Invalid, 2836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:09:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90874 states. [2024-10-23 21:09:29,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90874 to 84115. [2024-10-23 21:09:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84115 states, 84114 states have (on average 1.0529281689136172) internal successors, (88566), 84114 states have internal predecessors, (88566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84115 states to 84115 states and 88566 transitions. [2024-10-23 21:09:29,848 INFO L78 Accepts]: Start accepts. Automaton has 84115 states and 88566 transitions. Word has length 553 [2024-10-23 21:09:29,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:29,848 INFO L471 AbstractCegarLoop]: Abstraction has 84115 states and 88566 transitions. [2024-10-23 21:09:29,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:29,849 INFO L276 IsEmpty]: Start isEmpty. Operand 84115 states and 88566 transitions. [2024-10-23 21:09:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2024-10-23 21:09:29,862 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:29,863 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-10-23 21:09:29,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:09:29,863 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:29,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:29,864 INFO L85 PathProgramCache]: Analyzing trace with hash 943706580, now seen corresponding path program 1 times [2024-10-23 21:09:29,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:29,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097997531] [2024-10-23 21:09:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:29,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-10-23 21:09:30,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:30,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097997531] [2024-10-23 21:09:30,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097997531] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:30,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:30,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:30,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631534211] [2024-10-23 21:09:30,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:30,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:30,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:30,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:30,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:30,472 INFO L87 Difference]: Start difference. First operand 84115 states and 88566 transitions. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:33,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:33,010 INFO L93 Difference]: Finished difference Result 167478 states and 176375 transitions. [2024-10-23 21:09:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:33,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 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 553 [2024-10-23 21:09:33,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:33,093 INFO L225 Difference]: With dead ends: 167478 [2024-10-23 21:09:33,094 INFO L226 Difference]: Without dead ends: 84115 [2024-10-23 21:09:33,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:33,120 INFO L432 NwaCegarLoop]: 1252 mSDtfsCounter, 669 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:33,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1259 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2215 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:09:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84115 states. [2024-10-23 21:09:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84115 to 81111. [2024-10-23 21:09:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81111 states, 81110 states have (on average 1.0362224140056713) internal successors, (84048), 81110 states have internal predecessors, (84048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81111 states to 81111 states and 84048 transitions. [2024-10-23 21:09:34,078 INFO L78 Accepts]: Start accepts. Automaton has 81111 states and 84048 transitions. Word has length 553 [2024-10-23 21:09:34,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:34,078 INFO L471 AbstractCegarLoop]: Abstraction has 81111 states and 84048 transitions. [2024-10-23 21:09:34,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:34,078 INFO L276 IsEmpty]: Start isEmpty. Operand 81111 states and 84048 transitions. [2024-10-23 21:09:34,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2024-10-23 21:09:34,090 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:34,091 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:34,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:09:34,091 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:34,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:34,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1084460224, now seen corresponding path program 1 times [2024-10-23 21:09:34,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:34,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404879043] [2024-10-23 21:09:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:34,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-23 21:09:34,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:34,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404879043] [2024-10-23 21:09:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404879043] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:34,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:34,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469244968] [2024-10-23 21:09:34,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:34,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:34,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:34,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:34,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:34,895 INFO L87 Difference]: Start difference. First operand 81111 states and 84048 transitions. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:38,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:38,135 INFO L93 Difference]: Finished difference Result 202024 states and 209877 transitions. [2024-10-23 21:09:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:38,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 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 558 [2024-10-23 21:09:38,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:38,264 INFO L225 Difference]: With dead ends: 202024 [2024-10-23 21:09:38,264 INFO L226 Difference]: Without dead ends: 121665 [2024-10-23 21:09:38,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:38,294 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 720 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 624 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 2889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 624 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:38,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 423 Invalid, 2889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [624 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:09:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121665 states. [2024-10-23 21:09:39,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121665 to 116408. [2024-10-23 21:09:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116408 states, 116407 states have (on average 1.035453194395526) internal successors, (120534), 116407 states have internal predecessors, (120534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:39,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116408 states to 116408 states and 120534 transitions. [2024-10-23 21:09:39,787 INFO L78 Accepts]: Start accepts. Automaton has 116408 states and 120534 transitions. Word has length 558 [2024-10-23 21:09:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:39,787 INFO L471 AbstractCegarLoop]: Abstraction has 116408 states and 120534 transitions. [2024-10-23 21:09:39,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 116408 states and 120534 transitions. [2024-10-23 21:09:39,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2024-10-23 21:09:39,804 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:39,804 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:39,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:09:39,805 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:39,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash 275608305, now seen corresponding path program 1 times [2024-10-23 21:09:39,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:39,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268213350] [2024-10-23 21:09:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:39,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:40,322 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2024-10-23 21:09:40,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:40,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268213350] [2024-10-23 21:09:40,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268213350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:40,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:40,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:40,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254306462] [2024-10-23 21:09:40,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:40,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:40,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:40,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:40,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:40,329 INFO L87 Difference]: Start difference. First operand 116408 states and 120534 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:09:43,271 INFO L93 Difference]: Finished difference Result 251590 states and 260951 transitions. [2024-10-23 21:09:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:09:43,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 628 [2024-10-23 21:09:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:09:43,414 INFO L225 Difference]: With dead ends: 251590 [2024-10-23 21:09:43,415 INFO L226 Difference]: Without dead ends: 135934 [2024-10-23 21:09:43,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:43,456 INFO L432 NwaCegarLoop]: 1107 mSDtfsCounter, 823 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:09:43,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1114 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:09:43,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135934 states. [2024-10-23 21:09:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135934 to 133681. [2024-10-23 21:09:44,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133681 states, 133680 states have (on average 1.0334605026929982) internal successors, (138153), 133680 states have internal predecessors, (138153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133681 states to 133681 states and 138153 transitions. [2024-10-23 21:09:44,976 INFO L78 Accepts]: Start accepts. Automaton has 133681 states and 138153 transitions. Word has length 628 [2024-10-23 21:09:44,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:09:44,977 INFO L471 AbstractCegarLoop]: Abstraction has 133681 states and 138153 transitions. [2024-10-23 21:09:44,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:09:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 133681 states and 138153 transitions. [2024-10-23 21:09:45,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2024-10-23 21:09:45,016 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:09:45,017 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:09:45,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:09:45,017 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:09:45,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:09:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash -131678112, now seen corresponding path program 1 times [2024-10-23 21:09:45,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:09:45,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727537496] [2024-10-23 21:09:45,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:09:45,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:09:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:09:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 784 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2024-10-23 21:09:46,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:09:46,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727537496] [2024-10-23 21:09:46,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727537496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:09:46,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:09:46,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:09:46,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624920137] [2024-10-23 21:09:46,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:09:46,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:09:46,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:09:46,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:09:46,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:09:46,173 INFO L87 Difference]: Start difference. First operand 133681 states and 138153 transitions. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)