./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.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 a964c9c76c4af918501d56362d39292d13dbbfa4832d6b5721a3773b73fa584b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:09:22,241 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:09:22,338 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:09:22,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:09:22,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:09:22,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:09:22,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:09:22,365 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:09:22,365 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:09:22,366 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:09:22,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:09:22,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:09:22,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:09:22,370 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:09:22,370 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:09:22,371 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:09:22,371 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:09:22,371 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:09:22,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:09:22,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:09:22,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:09:22,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:09:22,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:09:22,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:09:22,377 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:09:22,377 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:09:22,378 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:09:22,378 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:09:22,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:09:22,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:09:22,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:09:22,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:09:22,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:09:22,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:09:22,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:09:22,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:09:22,380 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:09:22,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:09:22,381 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:09:22,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:09:22,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:09:22,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:09:22,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a964c9c76c4af918501d56362d39292d13dbbfa4832d6b5721a3773b73fa584b [2024-10-12 16:09:22,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:09:22,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:09:22,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:09:22,660 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:09:22,661 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:09:22,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.c [2024-10-12 16:09:24,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:09:24,603 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:09:24,604 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.c [2024-10-12 16:09:24,641 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd606d2a/2717969d4fb64b3189df7ff0ef8fc9f6/FLAG52ce33443 [2024-10-12 16:09:24,657 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddd606d2a/2717969d4fb64b3189df7ff0ef8fc9f6 [2024-10-12 16:09:24,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:09:24,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:09:24,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:09:24,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:09:24,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:09:24,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:09:24" (1/1) ... [2024-10-12 16:09:24,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97f805b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:24, skipping insertion in model container [2024-10-12 16:09:24,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:09:24" (1/1) ... [2024-10-12 16:09:24,799 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:09:25,081 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.c[2731,2744] [2024-10-12 16:09:26,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:09:26,071 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:09:26,101 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.c[2731,2744] [2024-10-12 16:09:26,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:09:26,662 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:09:26,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26 WrapperNode [2024-10-12 16:09:26,663 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:09:26,664 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:09:26,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:09:26,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:09:26,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:26,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:27,233 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-10-12 16:09:27,233 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:09:27,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:09:27,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:09:27,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:09:27,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:27,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:27,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:27,721 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 16:09:27,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:27,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:27,978 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:28,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:28,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:28,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:28,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:09:28,141 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:09:28,142 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:09:28,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:09:28,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (1/1) ... [2024-10-12 16:09:28,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:09:28,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:09:28,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 16:09:28,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 16:09:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:09:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:09:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:09:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:09:28,349 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:09:28,351 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:09:34,279 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-10-12 16:09:34,279 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:09:34,401 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:09:34,401 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:09:34,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:09:34 BoogieIcfgContainer [2024-10-12 16:09:34,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:09:34,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:09:34,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:09:34,407 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:09:34,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:09:24" (1/3) ... [2024-10-12 16:09:34,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7449a06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:09:34, skipping insertion in model container [2024-10-12 16:09:34,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:09:26" (2/3) ... [2024-10-12 16:09:34,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7449a06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:09:34, skipping insertion in model container [2024-10-12 16:09:34,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:09:34" (3/3) ... [2024-10-12 16:09:34,410 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label19.c [2024-10-12 16:09:34,426 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:09:34,427 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:09:34,535 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:09:34,542 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;@64d6711c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:09:34,542 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:09:34,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:34,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-12 16:09:34,562 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:09:34,563 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:09:34,563 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:09:34,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:09:34,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1011860660, now seen corresponding path program 1 times [2024-10-12 16:09:34,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:09:34,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898560335] [2024-10-12 16:09:34,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:09:34,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:09:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:09:34,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:09:34,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:09:34,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898560335] [2024-10-12 16:09:34,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898560335] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:09:34,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:09:34,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:09:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562952931] [2024-10-12 16:09:34,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:09:34,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:09:34,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:09:34,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:09:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:09:34,807 INFO L87 Difference]: Start difference. First operand has 1036 states, 1034 states have (on average 1.877176015473888) internal successors, (1941), 1035 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:34,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:09:34,918 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2024-10-12 16:09:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:09:34,921 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-10-12 16:09:34,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:09:34,949 INFO L225 Difference]: With dead ends: 2071 [2024-10-12 16:09:34,950 INFO L226 Difference]: Without dead ends: 1034 [2024-10-12 16:09:34,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:09:34,962 INFO L432 NwaCegarLoop]: 1876 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:09:34,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:09:34,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-12 16:09:35,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-10-12 16:09:35,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.8160696999031947) internal successors, (1876), 1033 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2024-10-12 16:09:35,057 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 16 [2024-10-12 16:09:35,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:09:35,057 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2024-10-12 16:09:35,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:35,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2024-10-12 16:09:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-12 16:09:35,059 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:09:35,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:09:35,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:09:35,060 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:09:35,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:09:35,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1327459792, now seen corresponding path program 1 times [2024-10-12 16:09:35,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:09:35,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23929954] [2024-10-12 16:09:35,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:09:35,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:09:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:09:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:09:35,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:09:35,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23929954] [2024-10-12 16:09:35,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23929954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:09:35,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:09:35,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:09:35,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526708156] [2024-10-12 16:09:35,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:09:35,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:09:35,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:09:35,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:09:35,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:35,198 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:39,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:09:39,811 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2024-10-12 16:09:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:09:39,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-10-12 16:09:39,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:09:39,820 INFO L225 Difference]: With dead ends: 3015 [2024-10-12 16:09:39,821 INFO L226 Difference]: Without dead ends: 1982 [2024-10-12 16:09:39,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:39,824 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 1038 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 929 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-12 16:09:39,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-10-12 16:09:39,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2024-10-12 16:09:39,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2024-10-12 16:09:39,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1929 states, 1928 states have (on average 1.7977178423236515) internal successors, (3466), 1928 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:39,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2024-10-12 16:09:39,887 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 16 [2024-10-12 16:09:39,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:09:39,887 INFO L471 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2024-10-12 16:09:39,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2024-10-12 16:09:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-12 16:09:39,890 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:09:39,890 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:09:39,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:09:39,891 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:09:39,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:09:39,892 INFO L85 PathProgramCache]: Analyzing trace with hash -659351013, now seen corresponding path program 1 times [2024-10-12 16:09:39,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:09:39,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553333198] [2024-10-12 16:09:39,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:09:39,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:09:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:09:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:09:40,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:09:40,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553333198] [2024-10-12 16:09:40,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553333198] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:09:40,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:09:40,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:09:40,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44602968] [2024-10-12 16:09:40,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:09:40,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:09:40,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:09:40,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:09:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:40,215 INFO L87 Difference]: Start difference. First operand 1929 states and 3466 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:09:43,719 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2024-10-12 16:09:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:09:43,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2024-10-12 16:09:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:09:43,734 INFO L225 Difference]: With dead ends: 5455 [2024-10-12 16:09:43,735 INFO L226 Difference]: Without dead ends: 3527 [2024-10-12 16:09:43,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:43,740 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:09:43,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-10-12 16:09:43,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2024-10-12 16:09:43,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2024-10-12 16:09:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3524 states have (on average 1.5672531214528944) internal successors, (5523), 3524 states have internal predecessors, (5523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2024-10-12 16:09:43,834 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 81 [2024-10-12 16:09:43,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:09:43,836 INFO L471 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2024-10-12 16:09:43,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2024-10-12 16:09:43,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-12 16:09:43,841 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:09:43,841 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:09:43,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:09:43,842 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:09:43,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:09:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2058955734, now seen corresponding path program 1 times [2024-10-12 16:09:43,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:09:43,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12840695] [2024-10-12 16:09:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:09:43,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:09:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:09:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:09:44,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:09:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12840695] [2024-10-12 16:09:44,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12840695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:09:44,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:09:44,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:09:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946496677] [2024-10-12 16:09:44,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:09:44,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:09:44,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:09:44,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:09:44,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:44,019 INFO L87 Difference]: Start difference. First operand 3525 states and 5523 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:09:47,207 INFO L93 Difference]: Finished difference Result 10231 states and 16096 transitions. [2024-10-12 16:09:47,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:09:47,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2024-10-12 16:09:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:09:47,229 INFO L225 Difference]: With dead ends: 10231 [2024-10-12 16:09:47,229 INFO L226 Difference]: Without dead ends: 6707 [2024-10-12 16:09:47,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:47,238 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:09:47,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 848 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-12 16:09:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2024-10-12 16:09:47,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 6699. [2024-10-12 16:09:47,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6698 states have (on average 1.4131083905643476) internal successors, (9465), 6698 states have internal predecessors, (9465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:47,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2024-10-12 16:09:47,359 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 87 [2024-10-12 16:09:47,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:09:47,360 INFO L471 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2024-10-12 16:09:47,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2024-10-12 16:09:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-12 16:09:47,362 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:09:47,362 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 16:09:47,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:09:47,362 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:09:47,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:09:47,363 INFO L85 PathProgramCache]: Analyzing trace with hash -619100555, now seen corresponding path program 1 times [2024-10-12 16:09:47,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:09:47,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611964513] [2024-10-12 16:09:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:09:47,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:09:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:09:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:09:47,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:09:47,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611964513] [2024-10-12 16:09:47,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611964513] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:09:47,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:09:47,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:09:47,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131834459] [2024-10-12 16:09:47,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:09:47,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:09:47,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:09:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:09:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:47,597 INFO L87 Difference]: Start difference. First operand 6699 states and 9465 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:51,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:09:51,126 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2024-10-12 16:09:51,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:09:51,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2024-10-12 16:09:51,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:09:51,154 INFO L225 Difference]: With dead ends: 17442 [2024-10-12 16:09:51,155 INFO L226 Difference]: Without dead ends: 10744 [2024-10-12 16:09:51,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:51,167 INFO L432 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 3742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:09:51,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-10-12 16:09:51,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2024-10-12 16:09:51,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2024-10-12 16:09:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10668 states, 10667 states have (on average 1.3563326146057935) internal successors, (14468), 10667 states have internal predecessors, (14468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2024-10-12 16:09:51,353 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 117 [2024-10-12 16:09:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:09:51,354 INFO L471 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2024-10-12 16:09:51,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:51,354 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2024-10-12 16:09:51,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-12 16:09:51,360 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:09:51,360 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 16:09:51,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:09:51,361 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:09:51,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:09:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash 777516302, now seen corresponding path program 1 times [2024-10-12 16:09:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:09:51,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155790196] [2024-10-12 16:09:51,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:09:51,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:09:51,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:09:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:09:51,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:09:51,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155790196] [2024-10-12 16:09:51,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155790196] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:09:51,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:09:51,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:09:51,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367507636] [2024-10-12 16:09:51,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:09:51,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:09:51,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:09:51,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:09:51,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:51,507 INFO L87 Difference]: Start difference. First operand 10668 states and 14468 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:55,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:09:55,653 INFO L93 Difference]: Finished difference Result 29990 states and 41179 transitions. [2024-10-12 16:09:55,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:09:55,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2024-10-12 16:09:55,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:09:55,707 INFO L225 Difference]: With dead ends: 29990 [2024-10-12 16:09:55,708 INFO L226 Difference]: Without dead ends: 20110 [2024-10-12 16:09:55,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:55,727 INFO L432 NwaCegarLoop]: 1857 mSDtfsCounter, 916 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:09:55,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1995 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-10-12 16:09:55,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20110 states. [2024-10-12 16:09:55,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20110 to 19313. [2024-10-12 16:09:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19313 states, 19312 states have (on average 1.282156172328086) internal successors, (24761), 19312 states have internal predecessors, (24761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19313 states to 19313 states and 24761 transitions. [2024-10-12 16:09:56,048 INFO L78 Accepts]: Start accepts. Automaton has 19313 states and 24761 transitions. Word has length 127 [2024-10-12 16:09:56,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:09:56,048 INFO L471 AbstractCegarLoop]: Abstraction has 19313 states and 24761 transitions. [2024-10-12 16:09:56,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:56,049 INFO L276 IsEmpty]: Start isEmpty. Operand 19313 states and 24761 transitions. [2024-10-12 16:09:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-10-12 16:09:56,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:09:56,050 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-12 16:09:56,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:09:56,050 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:09:56,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:09:56,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1417603317, now seen corresponding path program 1 times [2024-10-12 16:09:56,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:09:56,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552434151] [2024-10-12 16:09:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:09:56,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:09:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:09:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:09:56,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:09:56,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552434151] [2024-10-12 16:09:56,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552434151] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:09:56,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:09:56,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:09:56,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85065749] [2024-10-12 16:09:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:09:56,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:09:56,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:09:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:09:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:56,289 INFO L87 Difference]: Start difference. First operand 19313 states and 24761 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:59,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:09:59,382 INFO L93 Difference]: Finished difference Result 44941 states and 56979 transitions. [2024-10-12 16:09:59,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:09:59,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2024-10-12 16:09:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:09:59,436 INFO L225 Difference]: With dead ends: 44941 [2024-10-12 16:09:59,436 INFO L226 Difference]: Without dead ends: 25629 [2024-10-12 16:09:59,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:59,461 INFO L432 NwaCegarLoop]: 1043 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:09:59,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1222 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-12 16:09:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25629 states. [2024-10-12 16:09:59,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25629 to 25621. [2024-10-12 16:09:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25621 states, 25620 states have (on average 1.2332552693208432) internal successors, (31596), 25620 states have internal predecessors, (31596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25621 states to 25621 states and 31596 transitions. [2024-10-12 16:09:59,793 INFO L78 Accepts]: Start accepts. Automaton has 25621 states and 31596 transitions. Word has length 132 [2024-10-12 16:09:59,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:09:59,794 INFO L471 AbstractCegarLoop]: Abstraction has 25621 states and 31596 transitions. [2024-10-12 16:09:59,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:09:59,794 INFO L276 IsEmpty]: Start isEmpty. Operand 25621 states and 31596 transitions. [2024-10-12 16:09:59,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-12 16:09:59,796 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:09:59,796 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:09:59,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:09:59,797 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:09:59,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:09:59,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1122043964, now seen corresponding path program 1 times [2024-10-12 16:09:59,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:09:59,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406732177] [2024-10-12 16:09:59,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:09:59,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:09:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:09:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 16:09:59,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:09:59,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406732177] [2024-10-12 16:09:59,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406732177] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:09:59,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:09:59,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:09:59,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13175700] [2024-10-12 16:09:59,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:09:59,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:09:59,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:09:59,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:09:59,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:09:59,955 INFO L87 Difference]: Start difference. First operand 25621 states and 31596 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:03,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:10:03,396 INFO L93 Difference]: Finished difference Result 70952 states and 88337 transitions. [2024-10-12 16:10:03,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:10:03,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-10-12 16:10:03,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:10:03,487 INFO L225 Difference]: With dead ends: 70952 [2024-10-12 16:10:03,487 INFO L226 Difference]: Without dead ends: 46119 [2024-10-12 16:10:03,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:10:03,525 INFO L432 NwaCegarLoop]: 1083 mSDtfsCounter, 781 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:10:03,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1227 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-12 16:10:03,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46119 states. [2024-10-12 16:10:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46119 to 42945. [2024-10-12 16:10:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42945 states, 42944 states have (on average 1.1722242921013413) internal successors, (50340), 42944 states have internal predecessors, (50340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:04,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42945 states to 42945 states and 50340 transitions. [2024-10-12 16:10:04,171 INFO L78 Accepts]: Start accepts. Automaton has 42945 states and 50340 transitions. Word has length 170 [2024-10-12 16:10:04,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:10:04,171 INFO L471 AbstractCegarLoop]: Abstraction has 42945 states and 50340 transitions. [2024-10-12 16:10:04,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:04,172 INFO L276 IsEmpty]: Start isEmpty. Operand 42945 states and 50340 transitions. [2024-10-12 16:10:04,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-10-12 16:10:04,180 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:10:04,180 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:10:04,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:10:04,180 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:10:04,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:10:04,181 INFO L85 PathProgramCache]: Analyzing trace with hash -380916346, now seen corresponding path program 1 times [2024-10-12 16:10:04,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:10:04,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236783230] [2024-10-12 16:10:04,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:10:04,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:10:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:10:04,568 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 16:10:04,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:10:04,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236783230] [2024-10-12 16:10:04,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236783230] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:10:04,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:10:04,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:10:04,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551116253] [2024-10-12 16:10:04,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:10:04,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:10:04,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:10:04,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:10:04,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:10:04,572 INFO L87 Difference]: Start difference. First operand 42945 states and 50340 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:07,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:10:07,345 INFO L93 Difference]: Finished difference Result 85102 states and 99882 transitions. [2024-10-12 16:10:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:10:07,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2024-10-12 16:10:07,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:10:07,407 INFO L225 Difference]: With dead ends: 85102 [2024-10-12 16:10:07,407 INFO L226 Difference]: Without dead ends: 42945 [2024-10-12 16:10:07,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:10:07,437 INFO L432 NwaCegarLoop]: 1062 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:10:07,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1191 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-12 16:10:07,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42945 states. [2024-10-12 16:10:07,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42945 to 42945. [2024-10-12 16:10:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42945 states, 42944 states have (on average 1.1721078614008942) internal successors, (50335), 42944 states have internal predecessors, (50335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:07,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42945 states to 42945 states and 50335 transitions. [2024-10-12 16:10:07,924 INFO L78 Accepts]: Start accepts. Automaton has 42945 states and 50335 transitions. Word has length 236 [2024-10-12 16:10:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:10:07,925 INFO L471 AbstractCegarLoop]: Abstraction has 42945 states and 50335 transitions. [2024-10-12 16:10:07,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 42945 states and 50335 transitions. [2024-10-12 16:10:07,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-10-12 16:10:07,928 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:10:07,929 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:10:07,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 16:10:07,929 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:10:07,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:10:07,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1015228177, now seen corresponding path program 1 times [2024-10-12 16:10:07,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:10:07,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122211008] [2024-10-12 16:10:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:10:07,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:10:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:10:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:10:08,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:10:08,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122211008] [2024-10-12 16:10:08,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122211008] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:10:08,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:10:08,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:10:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25333863] [2024-10-12 16:10:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:10:08,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:10:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:10:08,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:10:08,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:10:08,247 INFO L87 Difference]: Start difference. First operand 42945 states and 50335 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:11,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:10:11,811 INFO L93 Difference]: Finished difference Result 104789 states and 124866 transitions. [2024-10-12 16:10:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:10:11,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2024-10-12 16:10:11,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:10:11,890 INFO L225 Difference]: With dead ends: 104789 [2024-10-12 16:10:11,890 INFO L226 Difference]: Without dead ends: 62632 [2024-10-12 16:10:11,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:10:11,914 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 824 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:10:11,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 926 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-12 16:10:11,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62632 states. [2024-10-12 16:10:12,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62632 to 60260. [2024-10-12 16:10:12,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60260 states, 60259 states have (on average 1.1630959690668614) internal successors, (70087), 60259 states have internal predecessors, (70087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60260 states to 60260 states and 70087 transitions. [2024-10-12 16:10:12,555 INFO L78 Accepts]: Start accepts. Automaton has 60260 states and 70087 transitions. Word has length 243 [2024-10-12 16:10:12,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:10:12,556 INFO L471 AbstractCegarLoop]: Abstraction has 60260 states and 70087 transitions. [2024-10-12 16:10:12,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 60260 states and 70087 transitions. [2024-10-12 16:10:12,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-10-12 16:10:12,559 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:10:12,559 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:10:12,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:10:12,559 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:10:12,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:10:12,560 INFO L85 PathProgramCache]: Analyzing trace with hash -711991981, now seen corresponding path program 1 times [2024-10-12 16:10:12,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:10:12,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039892807] [2024-10-12 16:10:12,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:10:12,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:10:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:10:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 32 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:10:13,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:10:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039892807] [2024-10-12 16:10:13,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039892807] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:10:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425960057] [2024-10-12 16:10:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:10:13,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:10:13,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:10:13,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:10:13,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:10:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:10:14,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:10:14,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:10:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-12 16:10:14,084 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:10:14,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425960057] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:10:14,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:10:14,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:10:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571710580] [2024-10-12 16:10:14,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:10:14,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:10:14,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:10:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:10:14,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:10:14,089 INFO L87 Difference]: Start difference. First operand 60260 states and 70087 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:10:17,255 INFO L93 Difference]: Finished difference Result 119730 states and 139380 transitions. [2024-10-12 16:10:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:10:17,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 257 [2024-10-12 16:10:17,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:10:17,338 INFO L225 Difference]: With dead ends: 119730 [2024-10-12 16:10:17,338 INFO L226 Difference]: Without dead ends: 60258 [2024-10-12 16:10:17,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:10:17,370 INFO L432 NwaCegarLoop]: 1355 mSDtfsCounter, 1189 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:10:17,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1435 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-12 16:10:17,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60258 states. [2024-10-12 16:10:17,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60258 to 60257. [2024-10-12 16:10:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60257 states, 60256 states have (on average 1.131820897503983) internal successors, (68199), 60256 states have internal predecessors, (68199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:18,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60257 states to 60257 states and 68199 transitions. [2024-10-12 16:10:18,043 INFO L78 Accepts]: Start accepts. Automaton has 60257 states and 68199 transitions. Word has length 257 [2024-10-12 16:10:18,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:10:18,044 INFO L471 AbstractCegarLoop]: Abstraction has 60257 states and 68199 transitions. [2024-10-12 16:10:18,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:18,044 INFO L276 IsEmpty]: Start isEmpty. Operand 60257 states and 68199 transitions. [2024-10-12 16:10:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-10-12 16:10:18,049 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:10:18,050 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:10:18,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 16:10:18,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-12 16:10:18,251 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:10:18,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:10:18,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1287337128, now seen corresponding path program 1 times [2024-10-12 16:10:18,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:10:18,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494449095] [2024-10-12 16:10:18,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:10:18,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:10:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:10:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 161 proven. 110 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 16:10:19,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:10:19,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494449095] [2024-10-12 16:10:19,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494449095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:10:19,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523831326] [2024-10-12 16:10:19,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:10:19,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:10:19,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:10:19,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:10:19,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:10:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:10:19,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:10:19,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:10:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-12 16:10:19,921 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:10:19,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523831326] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:10:19,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:10:19,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 16:10:19,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588217106] [2024-10-12 16:10:19,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:10:19,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:10:19,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:10:19,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:10:19,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:10:19,925 INFO L87 Difference]: Start difference. First operand 60257 states and 68199 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:23,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:10:23,143 INFO L93 Difference]: Finished difference Result 119715 states and 135595 transitions. [2024-10-12 16:10:23,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:10:23,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 322 [2024-10-12 16:10:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:10:23,214 INFO L225 Difference]: With dead ends: 119715 [2024-10-12 16:10:23,215 INFO L226 Difference]: Without dead ends: 60246 [2024-10-12 16:10:23,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:10:23,257 INFO L432 NwaCegarLoop]: 683 mSDtfsCounter, 1072 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:10:23,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 814 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-12 16:10:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60246 states. [2024-10-12 16:10:23,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60246 to 60243. [2024-10-12 16:10:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60243 states, 60242 states have (on average 1.0953155605723581) internal successors, (65984), 60242 states have internal predecessors, (65984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60243 states to 60243 states and 65984 transitions. [2024-10-12 16:10:24,075 INFO L78 Accepts]: Start accepts. Automaton has 60243 states and 65984 transitions. Word has length 322 [2024-10-12 16:10:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:10:24,075 INFO L471 AbstractCegarLoop]: Abstraction has 60243 states and 65984 transitions. [2024-10-12 16:10:24,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 60243 states and 65984 transitions. [2024-10-12 16:10:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-10-12 16:10:24,082 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:10:24,082 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:10:24,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 16:10:24,286 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,SelfDestructingSolverStorable11 [2024-10-12 16:10:24,287 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:10:24,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:10:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1022580295, now seen corresponding path program 1 times [2024-10-12 16:10:24,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:10:24,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138962641] [2024-10-12 16:10:24,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:10:24,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:10:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:10:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-12 16:10:24,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:10:24,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138962641] [2024-10-12 16:10:24,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138962641] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:10:24,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:10:24,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:10:24,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079335780] [2024-10-12 16:10:24,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:10:24,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:10:24,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:10:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:10:24,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:10:24,739 INFO L87 Difference]: Start difference. First operand 60243 states and 65984 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:10:31,014 INFO L93 Difference]: Finished difference Result 158471 states and 174231 transitions. [2024-10-12 16:10:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:10:31,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 364 [2024-10-12 16:10:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:10:31,260 INFO L225 Difference]: With dead ends: 158471 [2024-10-12 16:10:31,261 INFO L226 Difference]: Without dead ends: 99016 [2024-10-12 16:10:31,283 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:10:31,284 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 1710 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6034 mSolverCounterSat, 1075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 7109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1075 IncrementalHoareTripleChecker+Valid, 6034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:10:31,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 795 Invalid, 7109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1075 Valid, 6034 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-10-12 16:10:31,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99016 states. [2024-10-12 16:10:32,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99016 to 75998. [2024-10-12 16:10:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75998 states, 75997 states have (on average 1.0875429293261576) internal successors, (82650), 75997 states have internal predecessors, (82650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75998 states to 75998 states and 82650 transitions. [2024-10-12 16:10:32,265 INFO L78 Accepts]: Start accepts. Automaton has 75998 states and 82650 transitions. Word has length 364 [2024-10-12 16:10:32,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:10:32,266 INFO L471 AbstractCegarLoop]: Abstraction has 75998 states and 82650 transitions. [2024-10-12 16:10:32,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 75998 states and 82650 transitions. [2024-10-12 16:10:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-10-12 16:10:32,273 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:10:32,273 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:10:32,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 16:10:32,274 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:10:32,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:10:32,274 INFO L85 PathProgramCache]: Analyzing trace with hash 433342640, now seen corresponding path program 1 times [2024-10-12 16:10:32,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:10:32,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563955765] [2024-10-12 16:10:32,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:10:32,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:10:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:10:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-12 16:10:32,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:10:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563955765] [2024-10-12 16:10:32,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563955765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:10:32,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:10:32,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:10:32,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966459996] [2024-10-12 16:10:32,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:10:32,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:10:32,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:10:32,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:10:32,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:10:32,855 INFO L87 Difference]: Start difference. First operand 75998 states and 82650 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:10:36,449 INFO L93 Difference]: Finished difference Result 175616 states and 192334 transitions. [2024-10-12 16:10:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:10:36,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 377 [2024-10-12 16:10:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:10:36,567 INFO L225 Difference]: With dead ends: 175616 [2024-10-12 16:10:36,567 INFO L226 Difference]: Without dead ends: 100406 [2024-10-12 16:10:36,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:10:36,594 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 812 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 932 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:10:36,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 891 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-12 16:10:36,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100406 states. [2024-10-12 16:10:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100406 to 98814. [2024-10-12 16:10:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98814 states, 98813 states have (on average 1.090686448139415) internal successors, (107774), 98813 states have internal predecessors, (107774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98814 states to 98814 states and 107774 transitions. [2024-10-12 16:10:38,108 INFO L78 Accepts]: Start accepts. Automaton has 98814 states and 107774 transitions. Word has length 377 [2024-10-12 16:10:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:10:38,109 INFO L471 AbstractCegarLoop]: Abstraction has 98814 states and 107774 transitions. [2024-10-12 16:10:38,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:10:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 98814 states and 107774 transitions. [2024-10-12 16:10:38,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-10-12 16:10:38,116 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:10:38,117 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2024-10-12 16:10:38,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:10:38,117 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:10:38,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:10:38,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1029502847, now seen corresponding path program 1 times [2024-10-12 16:10:38,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:10:38,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907790166] [2024-10-12 16:10:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:10:38,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:10:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat