./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label17.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label17.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 42b374d0017cdae74eebab609ba5393370e8c987522e66a98f57a11c3f33505a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:20:35,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:20:35,976 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:20:35,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:20:35,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:20:35,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:20:35,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:20:36,000 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:20:36,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:20:36,001 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:20:36,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:20:36,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:20:36,001 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:20:36,002 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:20:36,002 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:20:36,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:20:36,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:20:36,003 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:20:36,003 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:20:36,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:20:36,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:20:36,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:20:36,005 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:20:36,005 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:20:36,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:20:36,006 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:20:36,006 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:20:36,006 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:20:36,006 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:20:36,006 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:20:36,006 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:20:36,006 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:20:36,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:20:36,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:20:36,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:20:36,007 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:20:36,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:20:36,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:20:36,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:20:36,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:20:36,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:20:36,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:20:36,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42b374d0017cdae74eebab609ba5393370e8c987522e66a98f57a11c3f33505a [2024-11-19 18:20:36,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:20:36,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:20:36,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:20:36,233 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:20:36,234 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:20:36,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label17.c [2024-11-19 18:20:37,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:20:37,704 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:20:37,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label17.c [2024-11-19 18:20:37,720 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9830b949/68ca492d50b544d9836eb800cc14a18e/FLAGca8b41af1 [2024-11-19 18:20:37,733 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9830b949/68ca492d50b544d9836eb800cc14a18e [2024-11-19 18:20:37,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:20:37,738 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:20:37,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:20:37,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:20:37,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:20:37,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:20:37" (1/1) ... [2024-11-19 18:20:37,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6732a537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:37, skipping insertion in model container [2024-11-19 18:20:37,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:20:37" (1/1) ... [2024-11-19 18:20:37,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:20:37,985 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label17.c[7664,7677] [2024-11-19 18:20:38,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:20:38,298 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:20:38,322 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label17.c[7664,7677] [2024-11-19 18:20:38,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:20:38,449 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:20:38,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38 WrapperNode [2024-11-19 18:20:38,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:20:38,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:20:38,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:20:38,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:20:38,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,628 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2024-11-19 18:20:38,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:20:38,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:20:38,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:20:38,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:20:38,637 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,652 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,706 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 18:20:38,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:20:38,827 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:20:38,827 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:20:38,827 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:20:38,827 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (1/1) ... [2024-11-19 18:20:38,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:20:38,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:20:38,858 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 18:20:38,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 18:20:38,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:20:38,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:20:38,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:20:38,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:20:38,976 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:20:38,978 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:20:40,661 INFO L? ?]: Removed 246 outVars from TransFormulas that were not future-live. [2024-11-19 18:20:40,661 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:20:40,680 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:20:40,680 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:20:40,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:20:40 BoogieIcfgContainer [2024-11-19 18:20:40,681 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:20:40,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:20:40,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:20:40,684 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:20:40,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:20:37" (1/3) ... [2024-11-19 18:20:40,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f81fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:20:40, skipping insertion in model container [2024-11-19 18:20:40,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:20:38" (2/3) ... [2024-11-19 18:20:40,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f81fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:20:40, skipping insertion in model container [2024-11-19 18:20:40,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:20:40" (3/3) ... [2024-11-19 18:20:40,686 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label17.c [2024-11-19 18:20:40,697 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:20:40,698 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:20:40,747 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:20:40,753 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;@5c2bb404, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:20:40,754 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:20:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:40,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-19 18:20:40,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:40,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:40,766 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:40,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:40,770 INFO L85 PathProgramCache]: Analyzing trace with hash -696204111, now seen corresponding path program 1 times [2024-11-19 18:20:40,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:40,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488135227] [2024-11-19 18:20:40,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:40,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:20:41,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:41,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488135227] [2024-11-19 18:20:41,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488135227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:41,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:41,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:20:41,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209040258] [2024-11-19 18:20:41,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:41,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:41,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:41,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:41,187 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:42,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:42,996 INFO L93 Difference]: Finished difference Result 1191 states and 2157 transitions. [2024-11-19 18:20:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:42,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-11-19 18:20:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:43,013 INFO L225 Difference]: With dead ends: 1191 [2024-11-19 18:20:43,014 INFO L226 Difference]: Without dead ends: 688 [2024-11-19 18:20:43,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:43,022 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 308 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:43,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 230 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-19 18:20:43,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-19 18:20:43,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 680. [2024-11-19 18:20:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 1.609720176730486) internal successors, (1093), 679 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1093 transitions. [2024-11-19 18:20:43,122 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1093 transitions. Word has length 63 [2024-11-19 18:20:43,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:43,123 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 1093 transitions. [2024-11-19 18:20:43,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:43,124 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1093 transitions. [2024-11-19 18:20:43,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-19 18:20:43,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:43,130 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, 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] [2024-11-19 18:20:43,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:20:43,131 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:43,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:43,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1963228353, now seen corresponding path program 1 times [2024-11-19 18:20:43,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:43,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115532661] [2024-11-19 18:20:43,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:43,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:20:43,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:43,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115532661] [2024-11-19 18:20:43,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115532661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:43,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:43,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:20:43,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246006880] [2024-11-19 18:20:43,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:43,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:43,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:43,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:43,429 INFO L87 Difference]: Start difference. First operand 680 states and 1093 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:44,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:44,646 INFO L93 Difference]: Finished difference Result 1964 states and 3171 transitions. [2024-11-19 18:20:44,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:44,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2024-11-19 18:20:44,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:44,652 INFO L225 Difference]: With dead ends: 1964 [2024-11-19 18:20:44,652 INFO L226 Difference]: Without dead ends: 1286 [2024-11-19 18:20:44,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:44,655 INFO L432 NwaCegarLoop]: 293 mSDtfsCounter, 282 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:44,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 360 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 18:20:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2024-11-19 18:20:44,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1281. [2024-11-19 18:20:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1280 states have (on average 1.3953125) internal successors, (1786), 1280 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:44,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1786 transitions. [2024-11-19 18:20:44,700 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1786 transitions. Word has length 131 [2024-11-19 18:20:44,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:44,701 INFO L471 AbstractCegarLoop]: Abstraction has 1281 states and 1786 transitions. [2024-11-19 18:20:44,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:44,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1786 transitions. [2024-11-19 18:20:44,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-19 18:20:44,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:44,703 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:44,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:20:44,704 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:44,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:44,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1160975019, now seen corresponding path program 1 times [2024-11-19 18:20:44,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:44,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737998467] [2024-11-19 18:20:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:44,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:20:45,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:45,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737998467] [2024-11-19 18:20:45,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737998467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:45,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:45,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:20:45,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197081289] [2024-11-19 18:20:45,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:45,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:45,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:45,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:45,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:45,021 INFO L87 Difference]: Start difference. First operand 1281 states and 1786 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:46,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:46,198 INFO L93 Difference]: Finished difference Result 2859 states and 3905 transitions. [2024-11-19 18:20:46,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:46,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2024-11-19 18:20:46,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:46,203 INFO L225 Difference]: With dead ends: 2859 [2024-11-19 18:20:46,203 INFO L226 Difference]: Without dead ends: 1580 [2024-11-19 18:20:46,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:46,205 INFO L432 NwaCegarLoop]: 324 mSDtfsCounter, 225 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:46,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 359 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:20:46,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2024-11-19 18:20:46,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2024-11-19 18:20:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1579 states have (on average 1.3242558581380621) internal successors, (2091), 1579 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2091 transitions. [2024-11-19 18:20:46,226 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2091 transitions. Word has length 139 [2024-11-19 18:20:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:46,226 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2091 transitions. [2024-11-19 18:20:46,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:46,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2091 transitions. [2024-11-19 18:20:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-19 18:20:46,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:46,229 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:46,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:20:46,230 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:46,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash 75098474, now seen corresponding path program 1 times [2024-11-19 18:20:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:46,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258336553] [2024-11-19 18:20:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-19 18:20:46,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:46,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258336553] [2024-11-19 18:20:46,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258336553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:46,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:46,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:46,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558906344] [2024-11-19 18:20:46,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:46,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:46,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:46,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:46,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:46,428 INFO L87 Difference]: Start difference. First operand 1580 states and 2091 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:47,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:47,551 INFO L93 Difference]: Finished difference Result 4065 states and 5551 transitions. [2024-11-19 18:20:47,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:47,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 230 [2024-11-19 18:20:47,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:47,559 INFO L225 Difference]: With dead ends: 4065 [2024-11-19 18:20:47,559 INFO L226 Difference]: Without dead ends: 2786 [2024-11-19 18:20:47,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:47,561 INFO L432 NwaCegarLoop]: 600 mSDtfsCounter, 265 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:47,561 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 637 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:20:47,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2024-11-19 18:20:47,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2024-11-19 18:20:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2785 states have (on average 1.2204667863554757) internal successors, (3399), 2785 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 3399 transitions. [2024-11-19 18:20:47,591 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 3399 transitions. Word has length 230 [2024-11-19 18:20:47,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:47,592 INFO L471 AbstractCegarLoop]: Abstraction has 2786 states and 3399 transitions. [2024-11-19 18:20:47,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:47,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 3399 transitions. [2024-11-19 18:20:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-19 18:20:47,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:47,594 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:47,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:20:47,594 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:47,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:47,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1852515434, now seen corresponding path program 1 times [2024-11-19 18:20:47,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:47,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848461357] [2024-11-19 18:20:47,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:47,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-19 18:20:47,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:47,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848461357] [2024-11-19 18:20:47,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848461357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:47,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:47,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:20:47,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333916885] [2024-11-19 18:20:47,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:47,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:47,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:47,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:47,782 INFO L87 Difference]: Start difference. First operand 2786 states and 3399 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:48,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:48,838 INFO L93 Difference]: Finished difference Result 6472 states and 8164 transitions. [2024-11-19 18:20:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:48,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 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 236 [2024-11-19 18:20:48,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:48,871 INFO L225 Difference]: With dead ends: 6472 [2024-11-19 18:20:48,871 INFO L226 Difference]: Without dead ends: 3987 [2024-11-19 18:20:48,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:48,874 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 220 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:48,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 364 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:20:48,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3987 states. [2024-11-19 18:20:48,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3987 to 3686. [2024-11-19 18:20:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3686 states, 3685 states have (on average 1.1959294436906378) internal successors, (4407), 3685 states have internal predecessors, (4407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 4407 transitions. [2024-11-19 18:20:48,924 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 4407 transitions. Word has length 236 [2024-11-19 18:20:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:48,925 INFO L471 AbstractCegarLoop]: Abstraction has 3686 states and 4407 transitions. [2024-11-19 18:20:48,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 4407 transitions. [2024-11-19 18:20:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-19 18:20:48,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:48,930 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, 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] [2024-11-19 18:20:48,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:20:48,930 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:48,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:48,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1238094804, now seen corresponding path program 1 times [2024-11-19 18:20:48,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:48,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847189445] [2024-11-19 18:20:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:48,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:20:49,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:49,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847189445] [2024-11-19 18:20:49,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847189445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:49,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:49,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:49,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206946949] [2024-11-19 18:20:49,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:49,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:49,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:49,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:49,208 INFO L87 Difference]: Start difference. First operand 3686 states and 4407 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:50,382 INFO L93 Difference]: Finished difference Result 8279 states and 10190 transitions. [2024-11-19 18:20:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:50,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2024-11-19 18:20:50,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:50,395 INFO L225 Difference]: With dead ends: 8279 [2024-11-19 18:20:50,396 INFO L226 Difference]: Without dead ends: 4894 [2024-11-19 18:20:50,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:50,400 INFO L432 NwaCegarLoop]: 564 mSDtfsCounter, 267 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:50,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 603 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:20:50,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2024-11-19 18:20:50,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 4592. [2024-11-19 18:20:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 4591 states have (on average 1.184055761272054) internal successors, (5436), 4591 states have internal predecessors, (5436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 5436 transitions. [2024-11-19 18:20:50,458 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 5436 transitions. Word has length 345 [2024-11-19 18:20:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:50,459 INFO L471 AbstractCegarLoop]: Abstraction has 4592 states and 5436 transitions. [2024-11-19 18:20:50,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:50,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 5436 transitions. [2024-11-19 18:20:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-19 18:20:50,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:50,462 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:50,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:20:50,462 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:50,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:50,463 INFO L85 PathProgramCache]: Analyzing trace with hash 207476629, now seen corresponding path program 1 times [2024-11-19 18:20:50,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:50,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478493744] [2024-11-19 18:20:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-19 18:20:50,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:50,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478493744] [2024-11-19 18:20:50,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478493744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:50,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:50,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:50,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870557552] [2024-11-19 18:20:50,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:50,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:50,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:50,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:50,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:50,763 INFO L87 Difference]: Start difference. First operand 4592 states and 5436 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:51,912 INFO L93 Difference]: Finished difference Result 10079 states and 12234 transitions. [2024-11-19 18:20:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:51,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 350 [2024-11-19 18:20:51,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:51,925 INFO L225 Difference]: With dead ends: 10079 [2024-11-19 18:20:51,926 INFO L226 Difference]: Without dead ends: 5788 [2024-11-19 18:20:51,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:51,931 INFO L432 NwaCegarLoop]: 580 mSDtfsCounter, 265 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:51,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 619 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:20:51,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5788 states. [2024-11-19 18:20:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5788 to 5784. [2024-11-19 18:20:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 1.1663496455127096) internal successors, (6745), 5783 states have internal predecessors, (6745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 6745 transitions. [2024-11-19 18:20:51,989 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 6745 transitions. Word has length 350 [2024-11-19 18:20:51,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:51,990 INFO L471 AbstractCegarLoop]: Abstraction has 5784 states and 6745 transitions. [2024-11-19 18:20:51,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:51,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 6745 transitions. [2024-11-19 18:20:51,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-19 18:20:51,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:51,997 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, 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, 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] [2024-11-19 18:20:51,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:20:51,997 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:51,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:51,997 INFO L85 PathProgramCache]: Analyzing trace with hash -934046099, now seen corresponding path program 1 times [2024-11-19 18:20:51,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:51,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475524669] [2024-11-19 18:20:51,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:51,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 426 proven. 39 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-19 18:20:52,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:52,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475524669] [2024-11-19 18:20:52,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475524669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:20:52,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849525084] [2024-11-19 18:20:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:52,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:52,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:20:52,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:20:52,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 18:20:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:52,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:20:52,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:20:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-19 18:20:53,173 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:20:53,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849525084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:53,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:20:53,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 18:20:53,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232740910] [2024-11-19 18:20:53,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:53,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:53,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:53,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:53,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:20:53,177 INFO L87 Difference]: Start difference. First operand 5784 states and 6745 transitions. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:54,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:54,476 INFO L93 Difference]: Finished difference Result 14556 states and 17044 transitions. [2024-11-19 18:20:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:54,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 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 514 [2024-11-19 18:20:54,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:54,497 INFO L225 Difference]: With dead ends: 14556 [2024-11-19 18:20:54,500 INFO L226 Difference]: Without dead ends: 9073 [2024-11-19 18:20:54,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:20:54,509 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 148 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:54,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 315 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-19 18:20:54,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9073 states. [2024-11-19 18:20:54,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9073 to 7578. [2024-11-19 18:20:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7578 states, 7577 states have (on average 1.1483436716378514) internal successors, (8701), 7577 states have internal predecessors, (8701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7578 states to 7578 states and 8701 transitions. [2024-11-19 18:20:54,589 INFO L78 Accepts]: Start accepts. Automaton has 7578 states and 8701 transitions. Word has length 514 [2024-11-19 18:20:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:54,590 INFO L471 AbstractCegarLoop]: Abstraction has 7578 states and 8701 transitions. [2024-11-19 18:20:54,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 7578 states and 8701 transitions. [2024-11-19 18:20:54,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2024-11-19 18:20:54,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:54,598 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:54,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 18:20:54,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:54,799 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:54,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:54,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2057557162, now seen corresponding path program 1 times [2024-11-19 18:20:54,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:54,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002013429] [2024-11-19 18:20:54,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:54,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 531 proven. 39 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-11-19 18:20:55,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:55,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002013429] [2024-11-19 18:20:55,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002013429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:20:55,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649865135] [2024-11-19 18:20:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:55,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:55,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:20:55,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:20:55,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 18:20:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:55,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:20:55,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:20:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-11-19 18:20:55,548 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:20:55,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649865135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:55,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:20:55,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 18:20:55,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131488731] [2024-11-19 18:20:55,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:55,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:55,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:55,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:55,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:20:55,550 INFO L87 Difference]: Start difference. First operand 7578 states and 8701 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:56,629 INFO L93 Difference]: Finished difference Result 17246 states and 20051 transitions. [2024-11-19 18:20:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:56,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 547 [2024-11-19 18:20:56,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:56,645 INFO L225 Difference]: With dead ends: 17246 [2024-11-19 18:20:56,645 INFO L226 Difference]: Without dead ends: 9969 [2024-11-19 18:20:56,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:20:56,653 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 354 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:56,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 447 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:20:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9969 states. [2024-11-19 18:20:56,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9969 to 9969. [2024-11-19 18:20:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.1498796147672552) internal successors, (11462), 9968 states have internal predecessors, (11462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 11462 transitions. [2024-11-19 18:20:56,757 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 11462 transitions. Word has length 547 [2024-11-19 18:20:56,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:56,757 INFO L471 AbstractCegarLoop]: Abstraction has 9969 states and 11462 transitions. [2024-11-19 18:20:56,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:56,761 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 11462 transitions. [2024-11-19 18:20:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2024-11-19 18:20:56,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:56,767 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:56,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 18:20:56,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-19 18:20:56,968 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:56,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:56,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1484596940, now seen corresponding path program 1 times [2024-11-19 18:20:56,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:56,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045911091] [2024-11-19 18:20:56,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:56,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 779 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-11-19 18:20:57,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:57,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045911091] [2024-11-19 18:20:57,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045911091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:57,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:20:57,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:20:57,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867619487] [2024-11-19 18:20:57,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:57,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:57,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:57,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:57,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:57,383 INFO L87 Difference]: Start difference. First operand 9969 states and 11462 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:58,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:20:58,565 INFO L93 Difference]: Finished difference Result 24136 states and 28000 transitions. [2024-11-19 18:20:58,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:20:58,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 551 [2024-11-19 18:20:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:20:58,586 INFO L225 Difference]: With dead ends: 24136 [2024-11-19 18:20:58,586 INFO L226 Difference]: Without dead ends: 14468 [2024-11-19 18:20:58,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:20:58,596 INFO L432 NwaCegarLoop]: 588 mSDtfsCounter, 246 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:20:58,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 621 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:20:58,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14468 states. [2024-11-19 18:20:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14468 to 14158. [2024-11-19 18:20:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14158 states, 14157 states have (on average 1.1347743165924984) internal successors, (16065), 14157 states have internal predecessors, (16065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14158 states to 14158 states and 16065 transitions. [2024-11-19 18:20:58,732 INFO L78 Accepts]: Start accepts. Automaton has 14158 states and 16065 transitions. Word has length 551 [2024-11-19 18:20:58,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:20:58,733 INFO L471 AbstractCegarLoop]: Abstraction has 14158 states and 16065 transitions. [2024-11-19 18:20:58,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:20:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 14158 states and 16065 transitions. [2024-11-19 18:20:58,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2024-11-19 18:20:58,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:20:58,740 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, 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:20:58,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 18:20:58,741 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:20:58,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:20:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash 94161064, now seen corresponding path program 1 times [2024-11-19 18:20:58,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:20:58,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217892560] [2024-11-19 18:20:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:58,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:20:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 688 proven. 39 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2024-11-19 18:20:59,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:20:59,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217892560] [2024-11-19 18:20:59,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217892560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:20:59,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420469774] [2024-11-19 18:20:59,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:20:59,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:20:59,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:20:59,274 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:20:59,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 18:20:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:20:59,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:20:59,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:20:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-11-19 18:20:59,515 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:20:59,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420469774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:20:59,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:20:59,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 18:20:59,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976688169] [2024-11-19 18:20:59,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:20:59,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:20:59,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:20:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:20:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:20:59,516 INFO L87 Difference]: Start difference. First operand 14158 states and 16065 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:00,509 INFO L93 Difference]: Finished difference Result 27712 states and 31488 transitions. [2024-11-19 18:21:00,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:21:00,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 626 [2024-11-19 18:21:00,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:00,524 INFO L225 Difference]: With dead ends: 27712 [2024-11-19 18:21:00,525 INFO L226 Difference]: Without dead ends: 13855 [2024-11-19 18:21:00,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:21:00,536 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 252 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:00,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 604 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:21:00,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13855 states. [2024-11-19 18:21:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13855 to 13555. [2024-11-19 18:21:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13555 states, 13554 states have (on average 1.0829275490630073) internal successors, (14678), 13554 states have internal predecessors, (14678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13555 states to 13555 states and 14678 transitions. [2024-11-19 18:21:00,653 INFO L78 Accepts]: Start accepts. Automaton has 13555 states and 14678 transitions. Word has length 626 [2024-11-19 18:21:00,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:00,654 INFO L471 AbstractCegarLoop]: Abstraction has 13555 states and 14678 transitions. [2024-11-19 18:21:00,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:00,654 INFO L276 IsEmpty]: Start isEmpty. Operand 13555 states and 14678 transitions. [2024-11-19 18:21:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2024-11-19 18:21:00,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:00,662 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:21:00,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 18:21:00,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:21:00,863 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:00,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:00,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1632467113, now seen corresponding path program 1 times [2024-11-19 18:21:00,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:00,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638137382] [2024-11-19 18:21:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:00,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 615 proven. 39 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-19 18:21:01,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:01,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638137382] [2024-11-19 18:21:01,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638137382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:21:01,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625439911] [2024-11-19 18:21:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:01,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:21:01,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:21:01,397 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:21:01,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 18:21:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:01,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 18:21:01,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:21:02,286 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 615 proven. 39 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-19 18:21:02,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:21:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 615 proven. 39 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-19 18:21:02,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625439911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:21:02,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:21:02,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-19 18:21:02,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687036709] [2024-11-19 18:21:02,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:21:02,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 18:21:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 18:21:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 18:21:02,936 INFO L87 Difference]: Start difference. First operand 13555 states and 14678 transitions. Second operand has 9 states, 9 states have (on average 86.33333333333333) internal successors, (777), 8 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:07,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:07,357 INFO L93 Difference]: Finished difference Result 35143 states and 38047 transitions. [2024-11-19 18:21:07,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 18:21:07,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 86.33333333333333) internal successors, (777), 8 states have internal predecessors, (777), 0 states have call successors, (0), 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 627 [2024-11-19 18:21:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:07,378 INFO L225 Difference]: With dead ends: 35143 [2024-11-19 18:21:07,379 INFO L226 Difference]: Without dead ends: 15948 [2024-11-19 18:21:07,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1263 GetRequests, 1249 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2024-11-19 18:21:07,393 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 3099 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 5500 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 6187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 5500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:07,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3099 Valid, 234 Invalid, 6187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 5500 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-19 18:21:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15948 states. [2024-11-19 18:21:07,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15948 to 12357. [2024-11-19 18:21:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12357 states, 12356 states have (on average 1.0382000647458725) internal successors, (12828), 12356 states have internal predecessors, (12828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:07,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12357 states to 12357 states and 12828 transitions. [2024-11-19 18:21:07,514 INFO L78 Accepts]: Start accepts. Automaton has 12357 states and 12828 transitions. Word has length 627 [2024-11-19 18:21:07,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:07,514 INFO L471 AbstractCegarLoop]: Abstraction has 12357 states and 12828 transitions. [2024-11-19 18:21:07,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.33333333333333) internal successors, (777), 8 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:07,515 INFO L276 IsEmpty]: Start isEmpty. Operand 12357 states and 12828 transitions. [2024-11-19 18:21:07,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2024-11-19 18:21:07,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:07,521 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:21:07,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 18:21:07,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:21:07,723 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:07,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:07,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1939287860, now seen corresponding path program 1 times [2024-11-19 18:21:07,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:07,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728988470] [2024-11-19 18:21:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:07,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 266 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:21:08,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:08,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728988470] [2024-11-19 18:21:08,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728988470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:21:08,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924793173] [2024-11-19 18:21:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:08,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:21:08,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:21:08,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:21:08,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 18:21:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:08,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:21:08,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:21:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-19 18:21:10,659 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:21:10,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924793173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:21:10,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:21:10,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-19 18:21:10,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794172659] [2024-11-19 18:21:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:10,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:21:10,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:10,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:21:10,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:21:10,661 INFO L87 Difference]: Start difference. First operand 12357 states and 12828 transitions. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:11,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:11,476 INFO L93 Difference]: Finished difference Result 29800 states and 30975 transitions. [2024-11-19 18:21:11,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:21:11,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 664 [2024-11-19 18:21:11,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:11,492 INFO L225 Difference]: With dead ends: 29800 [2024-11-19 18:21:11,493 INFO L226 Difference]: Without dead ends: 17445 [2024-11-19 18:21:11,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:21:11,502 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 130 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:11,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 175 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:21:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17445 states. [2024-11-19 18:21:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17445 to 16545. [2024-11-19 18:21:11,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16545 states, 16544 states have (on average 1.0359042553191489) internal successors, (17138), 16544 states have internal predecessors, (17138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16545 states to 16545 states and 17138 transitions. [2024-11-19 18:21:11,638 INFO L78 Accepts]: Start accepts. Automaton has 16545 states and 17138 transitions. Word has length 664 [2024-11-19 18:21:11,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:11,639 INFO L471 AbstractCegarLoop]: Abstraction has 16545 states and 17138 transitions. [2024-11-19 18:21:11,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 16545 states and 17138 transitions. [2024-11-19 18:21:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2024-11-19 18:21:11,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:11,646 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:21:11,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 18:21:11,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 18:21:11,847 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:11,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:11,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1196990164, now seen corresponding path program 1 times [2024-11-19 18:21:11,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:11,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703372149] [2024-11-19 18:21:11,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:11,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 640 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2024-11-19 18:21:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:12,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703372149] [2024-11-19 18:21:12,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703372149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:21:12,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:21:12,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:21:12,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780274352] [2024-11-19 18:21:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:12,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:21:12,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:12,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:21:12,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:21:12,212 INFO L87 Difference]: Start difference. First operand 16545 states and 17138 transitions. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:13,324 INFO L93 Difference]: Finished difference Result 39674 states and 41121 transitions. [2024-11-19 18:21:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:21:13,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 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 688 [2024-11-19 18:21:13,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:13,345 INFO L225 Difference]: With dead ends: 39674 [2024-11-19 18:21:13,346 INFO L226 Difference]: Without dead ends: 23131 [2024-11-19 18:21:13,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:21:13,358 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 583 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:13,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 179 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:21:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23131 states. [2024-11-19 18:21:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23131 to 17439. [2024-11-19 18:21:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17439 states, 17438 states have (on average 1.0334900791375157) internal successors, (18022), 17438 states have internal predecessors, (18022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17439 states to 17439 states and 18022 transitions. [2024-11-19 18:21:13,513 INFO L78 Accepts]: Start accepts. Automaton has 17439 states and 18022 transitions. Word has length 688 [2024-11-19 18:21:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:13,514 INFO L471 AbstractCegarLoop]: Abstraction has 17439 states and 18022 transitions. [2024-11-19 18:21:13,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 17439 states and 18022 transitions. [2024-11-19 18:21:13,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2024-11-19 18:21:13,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:13,521 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:21:13,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 18:21:13,522 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:13,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:13,522 INFO L85 PathProgramCache]: Analyzing trace with hash -265831356, now seen corresponding path program 1 times [2024-11-19 18:21:13,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:13,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721248277] [2024-11-19 18:21:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:13,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:13,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2024-11-19 18:21:13,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:13,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721248277] [2024-11-19 18:21:13,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721248277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:21:13,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:21:13,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:21:13,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285697565] [2024-11-19 18:21:13,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:13,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:21:13,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:13,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:21:13,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:21:13,778 INFO L87 Difference]: Start difference. First operand 17439 states and 18022 transitions. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:14,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:14,442 INFO L93 Difference]: Finished difference Result 34574 states and 35744 transitions. [2024-11-19 18:21:14,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:21:14,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 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 719 [2024-11-19 18:21:14,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:14,457 INFO L225 Difference]: With dead ends: 34574 [2024-11-19 18:21:14,458 INFO L226 Difference]: Without dead ends: 17436 [2024-11-19 18:21:14,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:21:14,468 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 436 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:14,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 68 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:21:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17436 states. [2024-11-19 18:21:14,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17436 to 17136. [2024-11-19 18:21:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17136 states, 17135 states have (on average 1.0334403268164576) internal successors, (17708), 17135 states have internal predecessors, (17708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17136 states to 17136 states and 17708 transitions. [2024-11-19 18:21:14,596 INFO L78 Accepts]: Start accepts. Automaton has 17136 states and 17708 transitions. Word has length 719 [2024-11-19 18:21:14,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:14,596 INFO L471 AbstractCegarLoop]: Abstraction has 17136 states and 17708 transitions. [2024-11-19 18:21:14,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:14,596 INFO L276 IsEmpty]: Start isEmpty. Operand 17136 states and 17708 transitions. [2024-11-19 18:21:14,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2024-11-19 18:21:14,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:14,605 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 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] [2024-11-19 18:21:14,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 18:21:14,605 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:14,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:14,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1716564453, now seen corresponding path program 1 times [2024-11-19 18:21:14,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:14,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994495166] [2024-11-19 18:21:14,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:14,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:14,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1279 backedges. 619 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-11-19 18:21:14,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:14,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994495166] [2024-11-19 18:21:14,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994495166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:21:14,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:21:14,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:21:14,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368369389] [2024-11-19 18:21:14,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:14,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:21:14,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:14,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:21:14,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:21:14,848 INFO L87 Difference]: Start difference. First operand 17136 states and 17708 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:15,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:15,613 INFO L93 Difference]: Finished difference Result 36056 states and 37327 transitions. [2024-11-19 18:21:15,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:21:15,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 753 [2024-11-19 18:21:15,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:15,628 INFO L225 Difference]: With dead ends: 36056 [2024-11-19 18:21:15,628 INFO L226 Difference]: Without dead ends: 19221 [2024-11-19 18:21:15,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:21:15,636 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 264 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:15,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 456 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:21:15,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19221 states. [2024-11-19 18:21:15,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19221 to 18324. [2024-11-19 18:21:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18324 states, 18323 states have (on average 1.0303989521366588) internal successors, (18880), 18323 states have internal predecessors, (18880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18324 states to 18324 states and 18880 transitions. [2024-11-19 18:21:15,841 INFO L78 Accepts]: Start accepts. Automaton has 18324 states and 18880 transitions. Word has length 753 [2024-11-19 18:21:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:15,841 INFO L471 AbstractCegarLoop]: Abstraction has 18324 states and 18880 transitions. [2024-11-19 18:21:15,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 18324 states and 18880 transitions. [2024-11-19 18:21:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2024-11-19 18:21:15,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:15,855 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:21:15,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 18:21:15,855 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:15,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:15,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1337623603, now seen corresponding path program 1 times [2024-11-19 18:21:15,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:15,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122696402] [2024-11-19 18:21:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 692 proven. 188 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-19 18:21:16,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:16,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122696402] [2024-11-19 18:21:16,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122696402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:21:16,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280990460] [2024-11-19 18:21:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:16,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:21:16,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:21:16,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:21:16,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 18:21:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:17,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:21:17,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:21:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 735 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2024-11-19 18:21:17,306 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:21:17,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280990460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:21:17,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:21:17,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-19 18:21:17,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510553973] [2024-11-19 18:21:17,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:17,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:21:17,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:17,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:21:17,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:21:17,309 INFO L87 Difference]: Start difference. First operand 18324 states and 18880 transitions. Second operand has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:18,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:18,436 INFO L93 Difference]: Finished difference Result 35737 states and 36717 transitions. [2024-11-19 18:21:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:21:18,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 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 828 [2024-11-19 18:21:18,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:18,451 INFO L225 Difference]: With dead ends: 35737 [2024-11-19 18:21:18,451 INFO L226 Difference]: Without dead ends: 17415 [2024-11-19 18:21:18,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:21:18,461 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 351 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1825 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:18,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 450 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1825 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:21:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2024-11-19 18:21:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 12904. [2024-11-19 18:21:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12904 states, 12903 states have (on average 1.0233279082383941) internal successors, (13204), 12903 states have internal predecessors, (13204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12904 states to 12904 states and 13204 transitions. [2024-11-19 18:21:18,564 INFO L78 Accepts]: Start accepts. Automaton has 12904 states and 13204 transitions. Word has length 828 [2024-11-19 18:21:18,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:18,564 INFO L471 AbstractCegarLoop]: Abstraction has 12904 states and 13204 transitions. [2024-11-19 18:21:18,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:18,564 INFO L276 IsEmpty]: Start isEmpty. Operand 12904 states and 13204 transitions. [2024-11-19 18:21:18,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2024-11-19 18:21:18,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:18,573 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:21:18,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 18:21:18,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 18:21:18,774 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:18,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:18,775 INFO L85 PathProgramCache]: Analyzing trace with hash 63589473, now seen corresponding path program 1 times [2024-11-19 18:21:18,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:18,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209332446] [2024-11-19 18:21:18,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:18,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1347 backedges. 799 proven. 0 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-11-19 18:21:19,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:19,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209332446] [2024-11-19 18:21:19,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209332446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:21:19,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:21:19,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:21:19,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039002433] [2024-11-19 18:21:19,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:19,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:21:19,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:19,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:21:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:21:19,286 INFO L87 Difference]: Start difference. First operand 12904 states and 13204 transitions. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:19,880 INFO L93 Difference]: Finished difference Result 27906 states and 28587 transitions. [2024-11-19 18:21:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:21:19,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 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 836 [2024-11-19 18:21:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:19,896 INFO L225 Difference]: With dead ends: 27906 [2024-11-19 18:21:19,896 INFO L226 Difference]: Without dead ends: 15303 [2024-11-19 18:21:19,904 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:21:19,904 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 320 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:19,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 85 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:21:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15303 states. [2024-11-19 18:21:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15303 to 12003. [2024-11-19 18:21:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12003 states, 12002 states have (on average 1.022996167305449) internal successors, (12278), 12002 states have internal predecessors, (12278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12003 states to 12003 states and 12278 transitions. [2024-11-19 18:21:19,997 INFO L78 Accepts]: Start accepts. Automaton has 12003 states and 12278 transitions. Word has length 836 [2024-11-19 18:21:19,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:19,997 INFO L471 AbstractCegarLoop]: Abstraction has 12003 states and 12278 transitions. [2024-11-19 18:21:19,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:19,998 INFO L276 IsEmpty]: Start isEmpty. Operand 12003 states and 12278 transitions. [2024-11-19 18:21:20,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2024-11-19 18:21:20,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:20,007 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:21:20,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 18:21:20,007 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:20,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:20,007 INFO L85 PathProgramCache]: Analyzing trace with hash 628335733, now seen corresponding path program 1 times [2024-11-19 18:21:20,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:20,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916741849] [2024-11-19 18:21:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 954 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2024-11-19 18:21:20,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:20,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916741849] [2024-11-19 18:21:20,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916741849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:21:20,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:21:20,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:21:20,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002300173] [2024-11-19 18:21:20,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:20,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:21:20,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:20,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:21:20,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:21:20,458 INFO L87 Difference]: Start difference. First operand 12003 states and 12278 transitions. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:21,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:21,142 INFO L93 Difference]: Finished difference Result 27607 states and 28280 transitions. [2024-11-19 18:21:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:21:21,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 849 [2024-11-19 18:21:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:21,156 INFO L225 Difference]: With dead ends: 27607 [2024-11-19 18:21:21,156 INFO L226 Difference]: Without dead ends: 15905 [2024-11-19 18:21:21,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:21:21,164 INFO L432 NwaCegarLoop]: 402 mSDtfsCounter, 175 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:21,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 425 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:21:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15905 states. [2024-11-19 18:21:21,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15905 to 14407. [2024-11-19 18:21:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14407 states, 14406 states have (on average 1.021727058170207) internal successors, (14719), 14406 states have internal predecessors, (14719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:21,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14407 states to 14407 states and 14719 transitions. [2024-11-19 18:21:21,318 INFO L78 Accepts]: Start accepts. Automaton has 14407 states and 14719 transitions. Word has length 849 [2024-11-19 18:21:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:21,318 INFO L471 AbstractCegarLoop]: Abstraction has 14407 states and 14719 transitions. [2024-11-19 18:21:21,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand 14407 states and 14719 transitions. [2024-11-19 18:21:21,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2024-11-19 18:21:21,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:21,333 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:21:21,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 18:21:21,333 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:21,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:21,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2109547138, now seen corresponding path program 1 times [2024-11-19 18:21:21,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:21,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934059648] [2024-11-19 18:21:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:21,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 641 proven. 269 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2024-11-19 18:21:22,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:22,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934059648] [2024-11-19 18:21:22,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934059648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:21:22,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869223335] [2024-11-19 18:21:22,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:22,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:21:22,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:21:22,393 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:21:22,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 18:21:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:22,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:21:22,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:21:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 658 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-19 18:21:22,785 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:21:22,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869223335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:21:22,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:21:22,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-19 18:21:22,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900024886] [2024-11-19 18:21:22,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:22,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:21:22,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:22,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:21:22,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:21:22,787 INFO L87 Difference]: Start difference. First operand 14407 states and 14719 transitions. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:23,664 INFO L93 Difference]: Finished difference Result 20703 states and 21118 transitions. [2024-11-19 18:21:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:21:23,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 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 869 [2024-11-19 18:21:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:23,683 INFO L225 Difference]: With dead ends: 20703 [2024-11-19 18:21:23,683 INFO L226 Difference]: Without dead ends: 20701 [2024-11-19 18:21:23,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:21:23,690 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 450 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:23,690 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 75 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 18:21:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20701 states. [2024-11-19 18:21:23,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20701 to 14108. [2024-11-19 18:21:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14108 states, 14107 states have (on average 1.0217622456936273) internal successors, (14414), 14107 states have internal predecessors, (14414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14108 states to 14108 states and 14414 transitions. [2024-11-19 18:21:23,827 INFO L78 Accepts]: Start accepts. Automaton has 14108 states and 14414 transitions. Word has length 869 [2024-11-19 18:21:23,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:23,827 INFO L471 AbstractCegarLoop]: Abstraction has 14108 states and 14414 transitions. [2024-11-19 18:21:23,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 14108 states and 14414 transitions. [2024-11-19 18:21:23,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 882 [2024-11-19 18:21:23,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:23,866 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:21:23,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 18:21:24,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:21:24,067 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:24,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:24,067 INFO L85 PathProgramCache]: Analyzing trace with hash -550717045, now seen corresponding path program 1 times [2024-11-19 18:21:24,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:24,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309957189] [2024-11-19 18:21:24,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:24,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1188 backedges. 664 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2024-11-19 18:21:24,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:24,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309957189] [2024-11-19 18:21:24,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309957189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:21:24,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:21:24,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:21:24,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838383106] [2024-11-19 18:21:24,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:24,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:21:24,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:24,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:21:24,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:21:24,390 INFO L87 Difference]: Start difference. First operand 14108 states and 14414 transitions. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:24,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:24,933 INFO L93 Difference]: Finished difference Result 29708 states and 30352 transitions. [2024-11-19 18:21:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:21:24,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 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 881 [2024-11-19 18:21:24,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:24,943 INFO L225 Difference]: With dead ends: 29708 [2024-11-19 18:21:24,943 INFO L226 Difference]: Without dead ends: 15602 [2024-11-19 18:21:24,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:21:24,950 INFO L432 NwaCegarLoop]: 393 mSDtfsCounter, 308 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:24,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 416 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:21:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15602 states. [2024-11-19 18:21:25,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15602 to 13208. [2024-11-19 18:21:25,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13208 states, 13207 states have (on average 1.0202922692511547) internal successors, (13475), 13207 states have internal predecessors, (13475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13208 states to 13208 states and 13475 transitions. [2024-11-19 18:21:25,045 INFO L78 Accepts]: Start accepts. Automaton has 13208 states and 13475 transitions. Word has length 881 [2024-11-19 18:21:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:25,045 INFO L471 AbstractCegarLoop]: Abstraction has 13208 states and 13475 transitions. [2024-11-19 18:21:25,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:25,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13208 states and 13475 transitions. [2024-11-19 18:21:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2024-11-19 18:21:25,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:25,053 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:21:25,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 18:21:25,053 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:25,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash 614307854, now seen corresponding path program 1 times [2024-11-19 18:21:25,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:25,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103294782] [2024-11-19 18:21:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:25,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2024-11-19 18:21:25,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:25,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103294782] [2024-11-19 18:21:25,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103294782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:21:25,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:21:25,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:21:25,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785657767] [2024-11-19 18:21:25,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:25,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:21:25,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:25,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:21:25,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:21:25,692 INFO L87 Difference]: Start difference. First operand 13208 states and 13475 transitions. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:26,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:26,699 INFO L93 Difference]: Finished difference Result 30612 states and 31221 transitions. [2024-11-19 18:21:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:21:26,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 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 902 [2024-11-19 18:21:26,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:26,715 INFO L225 Difference]: With dead ends: 30612 [2024-11-19 18:21:26,715 INFO L226 Difference]: Without dead ends: 17406 [2024-11-19 18:21:26,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:21:26,724 INFO L432 NwaCegarLoop]: 359 mSDtfsCounter, 490 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:26,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 397 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:21:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17406 states. [2024-11-19 18:21:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17406 to 13207. [2024-11-19 18:21:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13207 states, 13206 states have (on average 1.0201423595335453) internal successors, (13472), 13206 states have internal predecessors, (13472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13207 states to 13207 states and 13472 transitions. [2024-11-19 18:21:26,830 INFO L78 Accepts]: Start accepts. Automaton has 13207 states and 13472 transitions. Word has length 902 [2024-11-19 18:21:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:26,830 INFO L471 AbstractCegarLoop]: Abstraction has 13207 states and 13472 transitions. [2024-11-19 18:21:26,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13207 states and 13472 transitions. [2024-11-19 18:21:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2024-11-19 18:21:26,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:26,838 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:21:26,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 18:21:26,838 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:26,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:26,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1422622432, now seen corresponding path program 1 times [2024-11-19 18:21:26,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:26,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995425404] [2024-11-19 18:21:26,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:26,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 1003 proven. 183 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-19 18:21:28,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:28,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995425404] [2024-11-19 18:21:28,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995425404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:21:28,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818355871] [2024-11-19 18:21:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:28,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:21:28,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:21:28,068 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:21:28,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 18:21:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:28,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 1059 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 18:21:28,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:21:28,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 1133 proven. 76 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-19 18:21:28,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:21:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 1058 proven. 0 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-19 18:21:29,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818355871] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 18:21:29,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 18:21:29,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 8 [2024-11-19 18:21:29,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435168450] [2024-11-19 18:21:29,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:21:29,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:21:29,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:21:29,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:21:29,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:21:29,048 INFO L87 Difference]: Start difference. First operand 13207 states and 13472 transitions. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:29,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:21:29,633 INFO L93 Difference]: Finished difference Result 26713 states and 27250 transitions. [2024-11-19 18:21:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:21:29,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 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 906 [2024-11-19 18:21:29,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:21:29,646 INFO L225 Difference]: With dead ends: 26713 [2024-11-19 18:21:29,647 INFO L226 Difference]: Without dead ends: 13807 [2024-11-19 18:21:29,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1811 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:21:29,654 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 243 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:21:29,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 41 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:21:29,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13807 states. [2024-11-19 18:21:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13807 to 13504. [2024-11-19 18:21:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13504 states, 13503 states have (on average 1.0185144042064727) internal successors, (13753), 13503 states have internal predecessors, (13753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13504 states to 13504 states and 13753 transitions. [2024-11-19 18:21:29,744 INFO L78 Accepts]: Start accepts. Automaton has 13504 states and 13753 transitions. Word has length 906 [2024-11-19 18:21:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:21:29,745 INFO L471 AbstractCegarLoop]: Abstraction has 13504 states and 13753 transitions. [2024-11-19 18:21:29,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:21:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 13504 states and 13753 transitions. [2024-11-19 18:21:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2024-11-19 18:21:29,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:21:29,753 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:21:29,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 18:21:29,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 18:21:29,954 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:21:29,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:21:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash -522066642, now seen corresponding path program 1 times [2024-11-19 18:21:29,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:21:29,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605968673] [2024-11-19 18:21:29,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:29,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:21:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1477 backedges. 861 proven. 188 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2024-11-19 18:21:30,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:21:30,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605968673] [2024-11-19 18:21:30,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605968673] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:21:30,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964690225] [2024-11-19 18:21:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:21:30,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:21:30,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:21:30,912 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 18:21:30,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 18:21:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:21:31,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:21:31,114 INFO L278 TraceCheckSpWp]: Computing forward predicates...