./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label22.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 52a7ff7e330f46b869a7b98caac05f71580ce2ae239ad7bf01fc1c01c2bc4ab9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 11:01:50,347 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 11:01:50,406 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 11:01:50,410 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 11:01:50,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 11:01:50,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 11:01:50,439 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 11:01:50,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 11:01:50,440 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 11:01:50,441 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 11:01:50,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 11:01:50,442 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 11:01:50,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 11:01:50,443 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 11:01:50,443 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 11:01:50,443 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 11:01:50,443 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 11:01:50,444 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 11:01:50,444 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 11:01:50,444 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 11:01:50,444 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 11:01:50,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 11:01:50,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 11:01:50,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 11:01:50,449 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 11:01:50,449 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 11:01:50,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 11:01:50,449 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 11:01:50,450 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 11:01:50,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 11:01:50,451 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 11:01:50,451 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 11:01:50,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 11:01:50,452 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 11:01:50,452 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 11:01:50,452 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 11:01:50,452 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 11:01:50,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 11:01:50,453 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 11:01:50,453 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 11:01:50,453 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 11:01:50,453 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 11:01:50,454 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52a7ff7e330f46b869a7b98caac05f71580ce2ae239ad7bf01fc1c01c2bc4ab9 [2024-11-18 11:01:50,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 11:01:50,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 11:01:50,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 11:01:50,694 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 11:01:50,694 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 11:01:50,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label22.c [2024-11-18 11:01:52,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 11:01:52,642 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 11:01:52,643 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label22.c [2024-11-18 11:01:52,677 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/034caff5a/587af83c28e14a4683e1270a03a0f582/FLAGcf519aa19 [2024-11-18 11:01:52,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/034caff5a/587af83c28e14a4683e1270a03a0f582 [2024-11-18 11:01:52,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 11:01:52,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 11:01:52,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 11:01:52,750 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 11:01:52,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 11:01:52,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:01:52" (1/1) ... [2024-11-18 11:01:52,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b4230a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:52, skipping insertion in model container [2024-11-18 11:01:52,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:01:52" (1/1) ... [2024-11-18 11:01:52,900 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 11:01:53,183 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/Problem19_label22.c[4094,4107] [2024-11-18 11:01:54,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 11:01:54,229 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 11:01:54,251 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/Problem19_label22.c[4094,4107] [2024-11-18 11:01:54,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 11:01:54,921 INFO L204 MainTranslator]: Completed translation [2024-11-18 11:01:54,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54 WrapperNode [2024-11-18 11:01:54,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 11:01:54,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 11:01:54,922 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 11:01:54,922 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 11:01:54,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:55,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:55,835 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9431 [2024-11-18 11:01:55,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 11:01:55,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 11:01:55,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 11:01:55,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 11:01:55,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:55,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:56,118 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:56,488 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]. [2024-11-18 11:01:56,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:56,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:56,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:56,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:56,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:57,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:57,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 11:01:57,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 11:01:57,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 11:01:57,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 11:01:57,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (1/1) ... [2024-11-18 11:01:57,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 11:01:57,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 11:01:57,218 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) [2024-11-18 11:01:57,223 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 [2024-11-18 11:01:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 11:01:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 11:01:57,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 11:01:57,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 11:01:57,326 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 11:01:57,328 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 11:02:04,289 INFO L? ?]: Removed 1320 outVars from TransFormulas that were not future-live. [2024-11-18 11:02:04,290 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 11:02:04,346 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 11:02:04,346 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 11:02:04,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:02:04 BoogieIcfgContainer [2024-11-18 11:02:04,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 11:02:04,350 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 11:02:04,350 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 11:02:04,353 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 11:02:04,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:01:52" (1/3) ... [2024-11-18 11:02:04,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc0cb99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:02:04, skipping insertion in model container [2024-11-18 11:02:04,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:01:54" (2/3) ... [2024-11-18 11:02:04,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc0cb99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:02:04, skipping insertion in model container [2024-11-18 11:02:04,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:02:04" (3/3) ... [2024-11-18 11:02:04,357 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label22.c [2024-11-18 11:02:04,371 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 11:02:04,372 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 11:02:04,486 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 11:02:04,494 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;@22a0bcbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 11:02:04,494 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 11:02:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:04,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-18 11:02:04,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:02:04,509 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] [2024-11-18 11:02:04,510 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:02:04,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:02:04,514 INFO L85 PathProgramCache]: Analyzing trace with hash -748286455, now seen corresponding path program 1 times [2024-11-18 11:02:04,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:02:04,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492997290] [2024-11-18 11:02:04,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:02:04,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:02:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:02:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 11:02:04,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 11:02:04,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492997290] [2024-11-18 11:02:04,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492997290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:02:04,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 11:02:04,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 11:02:04,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221606123] [2024-11-18 11:02:04,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:02:04,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 11:02:04,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 11:02:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 11:02:04,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 11:02:04,862 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:11,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:02:11,436 INFO L93 Difference]: Finished difference Result 4919 states and 9313 transitions. [2024-11-18 11:02:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 11:02:11,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-18 11:02:11,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:02:11,458 INFO L225 Difference]: With dead ends: 4919 [2024-11-18 11:02:11,458 INFO L226 Difference]: Without dead ends: 3107 [2024-11-18 11:02:11,465 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 [2024-11-18 11:02:11,467 INFO L432 NwaCegarLoop]: 1276 mSDtfsCounter, 1524 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4638 mSolverCounterSat, 1110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 5748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1110 IncrementalHoareTripleChecker+Valid, 4638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-18 11:02:11,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1457 Invalid, 5748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1110 Valid, 4638 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-18 11:02:11,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2024-11-18 11:02:11,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3106. [2024-11-18 11:02:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 3105 states have (on average 1.652818035426731) internal successors, (5132), 3105 states have internal predecessors, (5132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5132 transitions. [2024-11-18 11:02:11,568 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5132 transitions. Word has length 29 [2024-11-18 11:02:11,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:02:11,568 INFO L471 AbstractCegarLoop]: Abstraction has 3106 states and 5132 transitions. [2024-11-18 11:02:11,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:11,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5132 transitions. [2024-11-18 11:02:11,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-18 11:02:11,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:02:11,572 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:02:11,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 11:02:11,573 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:02:11,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:02:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1755580370, now seen corresponding path program 1 times [2024-11-18 11:02:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:02:11,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865070825] [2024-11-18 11:02:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:02:11,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:02:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:02:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 11:02:11,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 11:02:11,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865070825] [2024-11-18 11:02:11,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865070825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:02:11,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 11:02:11,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 11:02:11,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583299412] [2024-11-18 11:02:11,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:02:11,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 11:02:11,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 11:02:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 11:02:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 11:02:11,849 INFO L87 Difference]: Start difference. First operand 3106 states and 5132 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:22,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:02:22,445 INFO L93 Difference]: Finished difference Result 10391 states and 16943 transitions. [2024-11-18 11:02:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 11:02:22,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2024-11-18 11:02:22,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:02:22,494 INFO L225 Difference]: With dead ends: 10391 [2024-11-18 11:02:22,494 INFO L226 Difference]: Without dead ends: 7287 [2024-11-18 11:02:22,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 11:02:22,501 INFO L432 NwaCegarLoop]: 1842 mSDtfsCounter, 4208 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 11122 mSolverCounterSat, 1405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 12527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1405 IncrementalHoareTripleChecker+Valid, 11122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-18 11:02:22,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4208 Valid, 2104 Invalid, 12527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1405 Valid, 11122 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-11-18 11:02:22,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7287 states. [2024-11-18 11:02:22,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7287 to 7236. [2024-11-18 11:02:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 1.5214927436074637) internal successors, (11008), 7235 states have internal predecessors, (11008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 11008 transitions. [2024-11-18 11:02:22,616 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 11008 transitions. Word has length 98 [2024-11-18 11:02:22,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:02:22,617 INFO L471 AbstractCegarLoop]: Abstraction has 7236 states and 11008 transitions. [2024-11-18 11:02:22,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 11008 transitions. [2024-11-18 11:02:22,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-18 11:02:22,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:02:22,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:02:22,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 11:02:22,629 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:02:22,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:02:22,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1311266863, now seen corresponding path program 1 times [2024-11-18 11:02:22,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:02:22,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792519041] [2024-11-18 11:02:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:02:22,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:02:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:02:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 11:02:23,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 11:02:23,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792519041] [2024-11-18 11:02:23,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792519041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:02:23,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 11:02:23,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 11:02:23,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428872449] [2024-11-18 11:02:23,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:02:23,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 11:02:23,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 11:02:23,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 11:02:23,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 11:02:23,279 INFO L87 Difference]: Start difference. First operand 7236 states and 11008 transitions. Second operand has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:28,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:02:28,472 INFO L93 Difference]: Finished difference Result 13136 states and 20668 transitions. [2024-11-18 11:02:28,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 11:02:28,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 264 [2024-11-18 11:02:28,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:02:28,513 INFO L225 Difference]: With dead ends: 13136 [2024-11-18 11:02:28,517 INFO L226 Difference]: Without dead ends: 7236 [2024-11-18 11:02:28,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 11:02:28,531 INFO L432 NwaCegarLoop]: 1767 mSDtfsCounter, 1151 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5712 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 5720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-18 11:02:28,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 1946 Invalid, 5720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5712 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-18 11:02:28,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2024-11-18 11:02:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2024-11-18 11:02:28,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 1.5202487906012438) internal successors, (10999), 7235 states have internal predecessors, (10999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 10999 transitions. [2024-11-18 11:02:28,622 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 10999 transitions. Word has length 264 [2024-11-18 11:02:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:02:28,623 INFO L471 AbstractCegarLoop]: Abstraction has 7236 states and 10999 transitions. [2024-11-18 11:02:28,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 10999 transitions. [2024-11-18 11:02:28,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2024-11-18 11:02:28,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:02:28,634 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:02:28,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 11:02:28,634 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:02:28,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:02:28,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1146889640, now seen corresponding path program 1 times [2024-11-18 11:02:28,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:02:28,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185338666] [2024-11-18 11:02:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:02:28,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:02:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:02:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-11-18 11:02:29,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 11:02:29,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185338666] [2024-11-18 11:02:29,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185338666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:02:29,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 11:02:29,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 11:02:29,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970878274] [2024-11-18 11:02:29,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:02:29,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 11:02:29,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 11:02:29,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 11:02:29,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 11:02:29,026 INFO L87 Difference]: Start difference. First operand 7236 states and 10999 transitions. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:33,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:02:33,573 INFO L93 Difference]: Finished difference Result 15842 states and 24472 transitions. [2024-11-18 11:02:33,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 11:02:33,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 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 581 [2024-11-18 11:02:33,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:02:33,613 INFO L225 Difference]: With dead ends: 15842 [2024-11-18 11:02:33,617 INFO L226 Difference]: Without dead ends: 9973 [2024-11-18 11:02:33,622 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 [2024-11-18 11:02:33,627 INFO L432 NwaCegarLoop]: 704 mSDtfsCounter, 1396 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 5598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-18 11:02:33,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 754 Invalid, 5598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-18 11:02:33,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2024-11-18 11:02:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9969. [2024-11-18 11:02:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.3901484751203852) internal successors, (13857), 9968 states have internal predecessors, (13857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:33,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 13857 transitions. [2024-11-18 11:02:33,773 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 13857 transitions. Word has length 581 [2024-11-18 11:02:33,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:02:33,775 INFO L471 AbstractCegarLoop]: Abstraction has 9969 states and 13857 transitions. [2024-11-18 11:02:33,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:33,776 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 13857 transitions. [2024-11-18 11:02:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2024-11-18 11:02:33,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:02:33,784 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:02:33,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 11:02:33,785 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:02:33,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:02:33,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1058786447, now seen corresponding path program 1 times [2024-11-18 11:02:33,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:02:33,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486569067] [2024-11-18 11:02:33,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:02:33,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:02:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:02:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-18 11:02:34,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 11:02:34,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486569067] [2024-11-18 11:02:34,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486569067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:02:34,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 11:02:34,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 11:02:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379306286] [2024-11-18 11:02:34,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:02:34,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 11:02:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 11:02:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 11:02:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 11:02:34,190 INFO L87 Difference]: Start difference. First operand 9969 states and 13857 transitions. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:39,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:02:39,689 INFO L93 Difference]: Finished difference Result 26933 states and 38507 transitions. [2024-11-18 11:02:39,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 11:02:39,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 584 [2024-11-18 11:02:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:02:39,720 INFO L225 Difference]: With dead ends: 26933 [2024-11-18 11:02:39,720 INFO L226 Difference]: Without dead ends: 18331 [2024-11-18 11:02:39,733 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 [2024-11-18 11:02:39,733 INFO L432 NwaCegarLoop]: 713 mSDtfsCounter, 2119 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 5113 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 5547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-18 11:02:39,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2119 Valid, 982 Invalid, 5547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5113 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-18 11:02:39,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18331 states. [2024-11-18 11:02:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18331 to 18329. [2024-11-18 11:02:39,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18329 states, 18328 states have (on average 1.378601047577477) internal successors, (25267), 18328 states have internal predecessors, (25267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:39,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18329 states to 18329 states and 25267 transitions. [2024-11-18 11:02:39,981 INFO L78 Accepts]: Start accepts. Automaton has 18329 states and 25267 transitions. Word has length 584 [2024-11-18 11:02:39,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:02:39,981 INFO L471 AbstractCegarLoop]: Abstraction has 18329 states and 25267 transitions. [2024-11-18 11:02:39,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:39,982 INFO L276 IsEmpty]: Start isEmpty. Operand 18329 states and 25267 transitions. [2024-11-18 11:02:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2024-11-18 11:02:39,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:02:39,992 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:02:39,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 11:02:39,992 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:02:39,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:02:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1779342814, now seen corresponding path program 1 times [2024-11-18 11:02:39,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:02:39,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402966570] [2024-11-18 11:02:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:02:39,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:02:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:02:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 53 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 11:02:41,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 11:02:41,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402966570] [2024-11-18 11:02:41,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402966570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 11:02:41,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522552936] [2024-11-18 11:02:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:02:41,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 11:02:41,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 11:02:41,964 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) [2024-11-18 11:02:41,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 11:02:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:02:42,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 11:02:42,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 11:02:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-18 11:02:42,261 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 11:02:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522552936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:02:42,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 11:02:42,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-18 11:02:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901842982] [2024-11-18 11:02:42,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:02:42,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 11:02:42,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 11:02:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 11:02:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 11:02:42,264 INFO L87 Difference]: Start difference. First operand 18329 states and 25267 transitions. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:02:47,790 INFO L93 Difference]: Finished difference Result 51713 states and 72347 transitions. [2024-11-18 11:02:47,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 11:02:47,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 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 598 [2024-11-18 11:02:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:02:47,834 INFO L225 Difference]: With dead ends: 51713 [2024-11-18 11:02:47,835 INFO L226 Difference]: Without dead ends: 34751 [2024-11-18 11:02:47,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 11:02:47,849 INFO L432 NwaCegarLoop]: 1958 mSDtfsCounter, 1692 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4894 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 6011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 4894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-18 11:02:47,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1692 Valid, 2065 Invalid, 6011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1117 Valid, 4894 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-18 11:02:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34751 states. [2024-11-18 11:02:48,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34751 to 34728. [2024-11-18 11:02:48,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34728 states, 34727 states have (on average 1.3551415325251246) internal successors, (47060), 34727 states have internal predecessors, (47060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34728 states to 34728 states and 47060 transitions. [2024-11-18 11:02:48,321 INFO L78 Accepts]: Start accepts. Automaton has 34728 states and 47060 transitions. Word has length 598 [2024-11-18 11:02:48,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:02:48,322 INFO L471 AbstractCegarLoop]: Abstraction has 34728 states and 47060 transitions. [2024-11-18 11:02:48,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:48,322 INFO L276 IsEmpty]: Start isEmpty. Operand 34728 states and 47060 transitions. [2024-11-18 11:02:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2024-11-18 11:02:48,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:02:48,327 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:02:48,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 11:02:48,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-18 11:02:48,532 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:02:48,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:02:48,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2127941698, now seen corresponding path program 1 times [2024-11-18 11:02:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:02:48,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419737950] [2024-11-18 11:02:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:02:48,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:02:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:02:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-18 11:02:48,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 11:02:48,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419737950] [2024-11-18 11:02:48,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419737950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:02:48,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 11:02:48,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 11:02:48,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834662719] [2024-11-18 11:02:48,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:02:48,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 11:02:48,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 11:02:48,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 11:02:48,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 11:02:48,873 INFO L87 Difference]: Start difference. First operand 34728 states and 47060 transitions. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:55,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:02:55,772 INFO L93 Difference]: Finished difference Result 98323 states and 134131 transitions. [2024-11-18 11:02:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 11:02:55,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 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 605 [2024-11-18 11:02:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:02:55,845 INFO L225 Difference]: With dead ends: 98323 [2024-11-18 11:02:55,845 INFO L226 Difference]: Without dead ends: 64962 [2024-11-18 11:02:55,887 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 [2024-11-18 11:02:55,887 INFO L432 NwaCegarLoop]: 1429 mSDtfsCounter, 1356 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 4206 mSolverCounterSat, 1424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 5630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1424 IncrementalHoareTripleChecker+Valid, 4206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-11-18 11:02:55,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 1695 Invalid, 5630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1424 Valid, 4206 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-11-18 11:02:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64962 states. [2024-11-18 11:02:56,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64962 to 62214. [2024-11-18 11:02:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62214 states, 62213 states have (on average 1.2403516949833635) internal successors, (77166), 62213 states have internal predecessors, (77166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:56,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62214 states to 62214 states and 77166 transitions. [2024-11-18 11:02:56,495 INFO L78 Accepts]: Start accepts. Automaton has 62214 states and 77166 transitions. Word has length 605 [2024-11-18 11:02:56,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:02:56,496 INFO L471 AbstractCegarLoop]: Abstraction has 62214 states and 77166 transitions. [2024-11-18 11:02:56,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:02:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 62214 states and 77166 transitions. [2024-11-18 11:02:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2024-11-18 11:02:56,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:02:56,504 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:02:56,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 11:02:56,505 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:02:56,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:02:56,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1553483389, now seen corresponding path program 1 times [2024-11-18 11:02:56,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:02:56,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468761219] [2024-11-18 11:02:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:02:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:02:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:02:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-11-18 11:02:56,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 11:02:56,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468761219] [2024-11-18 11:02:56,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468761219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:02:56,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 11:02:56,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 11:02:56,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532190774] [2024-11-18 11:02:56,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:02:56,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 11:02:56,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 11:02:56,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 11:02:56,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 11:02:56,882 INFO L87 Difference]: Start difference. First operand 62214 states and 77166 transitions. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:03:02,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:03:02,891 INFO L93 Difference]: Finished difference Result 144922 states and 182515 transitions. [2024-11-18 11:03:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 11:03:02,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 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 620 [2024-11-18 11:03:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:03:02,994 INFO L225 Difference]: With dead ends: 144922 [2024-11-18 11:03:02,994 INFO L226 Difference]: Without dead ends: 84075 [2024-11-18 11:03:03,023 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 [2024-11-18 11:03:03,024 INFO L432 NwaCegarLoop]: 3090 mSDtfsCounter, 1450 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 3736 mSolverCounterSat, 1636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 3276 SdHoareTripleChecker+Invalid, 5372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1636 IncrementalHoareTripleChecker+Valid, 3736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-18 11:03:03,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 3276 Invalid, 5372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1636 Valid, 3736 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-18 11:03:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84075 states. [2024-11-18 11:03:03,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84075 to 79973. [2024-11-18 11:03:03,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79973 states, 79972 states have (on average 1.2090606712349323) internal successors, (96691), 79972 states have internal predecessors, (96691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:03:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79973 states to 79973 states and 96691 transitions. [2024-11-18 11:03:03,815 INFO L78 Accepts]: Start accepts. Automaton has 79973 states and 96691 transitions. Word has length 620 [2024-11-18 11:03:03,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:03:03,815 INFO L471 AbstractCegarLoop]: Abstraction has 79973 states and 96691 transitions. [2024-11-18 11:03:03,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:03:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 79973 states and 96691 transitions. [2024-11-18 11:03:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2024-11-18 11:03:03,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:03:03,820 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:03:03,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 11:03:03,821 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:03:03,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:03:03,822 INFO L85 PathProgramCache]: Analyzing trace with hash 332347884, now seen corresponding path program 1 times [2024-11-18 11:03:03,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:03:03,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548482912] [2024-11-18 11:03:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:03:03,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:03:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:03:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 53 proven. 37 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-18 11:03:06,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 11:03:06,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548482912] [2024-11-18 11:03:06,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548482912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 11:03:06,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517153704] [2024-11-18 11:03:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:03:06,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 11:03:06,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 11:03:06,949 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) [2024-11-18 11:03:06,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 11:03:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:03:07,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 11:03:07,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 11:03:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2024-11-18 11:03:07,474 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 11:03:07,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517153704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:03:07,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 11:03:07,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-18 11:03:07,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150550460] [2024-11-18 11:03:07,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:03:07,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 11:03:07,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 11:03:07,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 11:03:07,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 11:03:07,478 INFO L87 Difference]: Start difference. First operand 79973 states and 96691 transitions. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:03:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 11:03:14,330 INFO L93 Difference]: Finished difference Result 199648 states and 241231 transitions. [2024-11-18 11:03:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 11:03:14,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 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 726 [2024-11-18 11:03:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 11:03:14,465 INFO L225 Difference]: With dead ends: 199648 [2024-11-18 11:03:14,465 INFO L226 Difference]: Without dead ends: 121042 [2024-11-18 11:03:14,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 11:03:14,491 INFO L432 NwaCegarLoop]: 3164 mSDtfsCounter, 1448 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 5059 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 3335 SdHoareTripleChecker+Invalid, 5955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 5059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-18 11:03:14,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 3335 Invalid, 5955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 5059 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-18 11:03:14,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121042 states. [2024-11-18 11:03:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121042 to 118222. [2024-11-18 11:03:16,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118222 states, 118221 states have (on average 1.1719068524204668) internal successors, (138544), 118221 states have internal predecessors, (138544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:03:16,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118222 states to 118222 states and 138544 transitions. [2024-11-18 11:03:16,769 INFO L78 Accepts]: Start accepts. Automaton has 118222 states and 138544 transitions. Word has length 726 [2024-11-18 11:03:16,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 11:03:16,777 INFO L471 AbstractCegarLoop]: Abstraction has 118222 states and 138544 transitions. [2024-11-18 11:03:16,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 11:03:16,777 INFO L276 IsEmpty]: Start isEmpty. Operand 118222 states and 138544 transitions. [2024-11-18 11:03:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2024-11-18 11:03:16,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 11:03:16,807 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 11:03:16,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 11:03:17,008 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 [2024-11-18 11:03:17,009 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 11:03:17,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 11:03:17,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1774710748, now seen corresponding path program 1 times [2024-11-18 11:03:17,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 11:03:17,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743881345] [2024-11-18 11:03:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:03:17,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 11:03:17,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:03:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 184 proven. 392 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-18 11:03:18,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 11:03:18,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743881345] [2024-11-18 11:03:18,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743881345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 11:03:18,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909723215] [2024-11-18 11:03:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 11:03:18,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 11:03:18,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 11:03:18,594 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) [2024-11-18 11:03:18,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 11:03:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 11:03:18,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 11:03:18,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 11:03:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2024-11-18 11:03:18,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 11:03:18,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909723215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 11:03:18,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 11:03:18,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-18 11:03:18,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777200517] [2024-11-18 11:03:18,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 11:03:18,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 11:03:18,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 11:03:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 11:03:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 11:03:18,919 INFO L87 Difference]: Start difference. First operand 118222 states and 138544 transitions. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 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)