./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 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/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-dev-4a390ef-m [2024-10-23 21:11:40,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:11:40,726 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:11:40,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:11:40,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:11:40,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:11:40,755 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:11:40,755 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:11:40,756 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:11:40,756 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:11:40,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:11:40,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:11:40,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:11:40,757 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:11:40,759 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:11:40,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:11:40,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:11:40,759 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:11:40,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:11:40,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:11:40,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:11:40,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:11:40,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:11:40,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:11:40,763 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:11:40,763 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:11:40,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:11:40,764 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:11:40,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:11:40,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:11:40,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:11:40,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:11:40,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:11:40,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:11:40,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:11:40,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:11:40,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:11:40,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:11:40,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:11:40,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:11:40,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:11:40,767 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:11:40,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a964c9c76c4af918501d56362d39292d13dbbfa4832d6b5721a3773b73fa584b [2024-10-23 21:11:40,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:11:40,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:11:40,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:11:40,995 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:11:40,997 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:11:40,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.c [2024-10-23 21:11:42,234 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:11:42,610 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:11:42,611 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label19.c [2024-10-23 21:11:42,642 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53c2a65db/4e80778745f04d648b9c883559ccfe2a/FLAGc3a6a9544 [2024-10-23 21:11:42,656 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53c2a65db/4e80778745f04d648b9c883559ccfe2a [2024-10-23 21:11:42,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:11:42,660 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:11:42,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:11:42,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:11:42,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:11:42,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:42" (1/1) ... [2024-10-23 21:11:42,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5922e8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:42, skipping insertion in model container [2024-10-23 21:11:42,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:42" (1/1) ... [2024-10-23 21:11:42,754 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:11:42,978 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] [2024-10-23 21:11:43,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:11:43,688 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:11:43,703 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] [2024-10-23 21:11:44,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:11:44,061 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:11:44,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44 WrapperNode [2024-10-23 21:11:44,062 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:11:44,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:11:44,063 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:11:44,063 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:11:44,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:44,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:44,599 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-10-23 21:11:44,600 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:11:44,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:11:44,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:11:44,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:11:44,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:44,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:44,722 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:44,872 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-23 21:11:44,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:44,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:45,123 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:45,155 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:45,201 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:45,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:45,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:11:45,354 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:11:45,354 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:11:45,354 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:11:45,355 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (1/1) ... [2024-10-23 21:11:45,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:11:45,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:11:45,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-23 21:11:45,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-23 21:11:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:11:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:11:45,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:11:45,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:11:45,487 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:11:45,489 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:11:50,553 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-10-23 21:11:50,554 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:11:50,610 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:11:50,610 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:11:50,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:50 BoogieIcfgContainer [2024-10-23 21:11:50,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:11:50,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:11:50,612 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:11:50,615 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:11:50,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:11:42" (1/3) ... [2024-10-23 21:11:50,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a2d65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:50, skipping insertion in model container [2024-10-23 21:11:50,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:44" (2/3) ... [2024-10-23 21:11:50,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a2d65a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:50, skipping insertion in model container [2024-10-23 21:11:50,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:50" (3/3) ... [2024-10-23 21:11:50,618 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label19.c [2024-10-23 21:11:50,632 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:11:50,632 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:11:50,709 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:11:50,715 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;@62e5552e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:11:50,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:11:50,722 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) [2024-10-23 21:11:50,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-23 21:11:50,726 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:50,727 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:50,727 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:50,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:50,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1011860660, now seen corresponding path program 1 times [2024-10-23 21:11:50,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:50,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566010387] [2024-10-23 21:11:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:50,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:50,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:50,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566010387] [2024-10-23 21:11:50,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566010387] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:50,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:50,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:50,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088303547] [2024-10-23 21:11:50,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:50,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:11:50,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:50,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:11:50,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:11:50,904 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) [2024-10-23 21:11:50,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:50,988 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2024-10-23 21:11:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:11:50,994 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 [2024-10-23 21:11:50,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:51,015 INFO L225 Difference]: With dead ends: 2071 [2024-10-23 21:11:51,016 INFO L226 Difference]: Without dead ends: 1034 [2024-10-23 21:11:51,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:11:51,025 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 [2024-10-23 21:11:51,027 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] [2024-10-23 21:11:51,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-23 21:11:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-10-23 21:11:51,104 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) [2024-10-23 21:11:51,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2024-10-23 21:11:51,108 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 16 [2024-10-23 21:11:51,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:51,109 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2024-10-23 21:11:51,109 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) [2024-10-23 21:11:51,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2024-10-23 21:11:51,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-23 21:11:51,110 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:51,110 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:11:51,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:11:51,111 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:51,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1327459792, now seen corresponding path program 1 times [2024-10-23 21:11:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:51,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150816536] [2024-10-23 21:11:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:51,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:51,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:51,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150816536] [2024-10-23 21:11:51,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150816536] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:51,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:51,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:51,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224932380] [2024-10-23 21:11:51,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:51,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:51,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:51,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:51,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:51,219 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) [2024-10-23 21:11:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:55,180 INFO L93 Difference]: Finished difference Result 3015 states and 5510 transitions. [2024-10-23 21:11:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:55,180 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 [2024-10-23 21:11:55,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:55,190 INFO L225 Difference]: With dead ends: 3015 [2024-10-23 21:11:55,190 INFO L226 Difference]: Without dead ends: 1982 [2024-10-23 21:11:55,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:55,192 INFO L432 NwaCegarLoop]: 223 mSDtfsCounter, 1038 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 929 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:55,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 317 Invalid, 3885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [929 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-10-23 21:11:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2024-10-23 21:11:55,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1929. [2024-10-23 21:11:55,230 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) [2024-10-23 21:11:55,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 3466 transitions. [2024-10-23 21:11:55,235 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 3466 transitions. Word has length 16 [2024-10-23 21:11:55,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:55,236 INFO L471 AbstractCegarLoop]: Abstraction has 1929 states and 3466 transitions. [2024-10-23 21:11:55,236 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) [2024-10-23 21:11:55,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 3466 transitions. [2024-10-23 21:11:55,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-23 21:11:55,238 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:55,239 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] [2024-10-23 21:11:55,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:11:55,240 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:55,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:55,242 INFO L85 PathProgramCache]: Analyzing trace with hash -659351013, now seen corresponding path program 1 times [2024-10-23 21:11:55,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:55,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573915680] [2024-10-23 21:11:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:55,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:55,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:55,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:55,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573915680] [2024-10-23 21:11:55,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573915680] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:55,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:55,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:55,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009709157] [2024-10-23 21:11:55,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:55,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:55,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:55,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:55,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:55,463 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) [2024-10-23 21:11:58,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:11:58,187 INFO L93 Difference]: Finished difference Result 5455 states and 9916 transitions. [2024-10-23 21:11:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:11:58,188 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 [2024-10-23 21:11:58,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:11:58,199 INFO L225 Difference]: With dead ends: 5455 [2024-10-23 21:11:58,199 INFO L226 Difference]: Without dead ends: 3527 [2024-10-23 21:11:58,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:58,203 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:11:58,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1005 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:11:58,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2024-10-23 21:11:58,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2024-10-23 21:11:58,250 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) [2024-10-23 21:11:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5523 transitions. [2024-10-23 21:11:58,256 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5523 transitions. Word has length 81 [2024-10-23 21:11:58,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:11:58,256 INFO L471 AbstractCegarLoop]: Abstraction has 3525 states and 5523 transitions. [2024-10-23 21:11:58,257 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) [2024-10-23 21:11:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5523 transitions. [2024-10-23 21:11:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-23 21:11:58,258 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:11:58,258 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] [2024-10-23 21:11:58,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:11:58,259 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:11:58,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:11:58,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2058955734, now seen corresponding path program 1 times [2024-10-23 21:11:58,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:11:58,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82179714] [2024-10-23 21:11:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:11:58,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:11:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:11:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:11:58,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:11:58,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82179714] [2024-10-23 21:11:58,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82179714] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:11:58,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:11:58,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:11:58,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791693503] [2024-10-23 21:11:58,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:11:58,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:11:58,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:11:58,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:11:58,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:11:58,391 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) [2024-10-23 21:12:01,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:01,181 INFO L93 Difference]: Finished difference Result 10231 states and 16096 transitions. [2024-10-23 21:12:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:01,182 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 [2024-10-23 21:12:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:01,200 INFO L225 Difference]: With dead ends: 10231 [2024-10-23 21:12:01,200 INFO L226 Difference]: Without dead ends: 6707 [2024-10-23 21:12:01,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:01,205 INFO L432 NwaCegarLoop]: 715 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:01,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 848 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:12:01,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6707 states. [2024-10-23 21:12:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6707 to 6699. [2024-10-23 21:12:01,288 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) [2024-10-23 21:12:01,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 9465 transitions. [2024-10-23 21:12:01,299 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 9465 transitions. Word has length 87 [2024-10-23 21:12:01,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:01,299 INFO L471 AbstractCegarLoop]: Abstraction has 6699 states and 9465 transitions. [2024-10-23 21:12:01,300 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) [2024-10-23 21:12:01,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 9465 transitions. [2024-10-23 21:12:01,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-23 21:12:01,301 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:01,301 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] [2024-10-23 21:12:01,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:12:01,301 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:01,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:01,302 INFO L85 PathProgramCache]: Analyzing trace with hash -619100555, now seen corresponding path program 1 times [2024-10-23 21:12:01,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:01,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200524062] [2024-10-23 21:12:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:01,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:12:01,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:01,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200524062] [2024-10-23 21:12:01,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200524062] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:01,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:01,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:12:01,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111382513] [2024-10-23 21:12:01,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:01,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:01,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:01,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:01,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:01,479 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) [2024-10-23 21:12:04,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:04,362 INFO L93 Difference]: Finished difference Result 17442 states and 24478 transitions. [2024-10-23 21:12:04,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:04,363 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 [2024-10-23 21:12:04,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:04,391 INFO L225 Difference]: With dead ends: 17442 [2024-10-23 21:12:04,391 INFO L226 Difference]: Without dead ends: 10744 [2024-10-23 21:12:04,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:04,404 INFO L432 NwaCegarLoop]: 832 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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, 2.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:04,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 963 Invalid, 3742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-23 21:12:04,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2024-10-23 21:12:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 10668. [2024-10-23 21:12:04,547 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) [2024-10-23 21:12:04,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 14468 transitions. [2024-10-23 21:12:04,564 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 14468 transitions. Word has length 117 [2024-10-23 21:12:04,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:04,565 INFO L471 AbstractCegarLoop]: Abstraction has 10668 states and 14468 transitions. [2024-10-23 21:12:04,565 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) [2024-10-23 21:12:04,565 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 14468 transitions. [2024-10-23 21:12:04,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-23 21:12:04,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:04,567 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] [2024-10-23 21:12:04,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:12:04,567 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:04,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:04,571 INFO L85 PathProgramCache]: Analyzing trace with hash 777516302, now seen corresponding path program 1 times [2024-10-23 21:12:04,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:04,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518040415] [2024-10-23 21:12:04,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:04,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:12:04,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:04,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518040415] [2024-10-23 21:12:04,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518040415] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:04,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:04,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:12:04,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315847643] [2024-10-23 21:12:04,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:04,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:04,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:04,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:04,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:04,745 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) [2024-10-23 21:12:08,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:08,472 INFO L93 Difference]: Finished difference Result 29990 states and 41179 transitions. [2024-10-23 21:12:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:08,476 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 [2024-10-23 21:12:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:08,522 INFO L225 Difference]: With dead ends: 29990 [2024-10-23 21:12:08,522 INFO L226 Difference]: Without dead ends: 20110 [2024-10-23 21:12:08,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:08,539 INFO L432 NwaCegarLoop]: 1857 mSDtfsCounter, 916 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:08,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1995 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-10-23 21:12:08,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20110 states. [2024-10-23 21:12:08,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20110 to 19313. [2024-10-23 21:12:08,776 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) [2024-10-23 21:12:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19313 states to 19313 states and 24761 transitions. [2024-10-23 21:12:08,812 INFO L78 Accepts]: Start accepts. Automaton has 19313 states and 24761 transitions. Word has length 127 [2024-10-23 21:12:08,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:08,815 INFO L471 AbstractCegarLoop]: Abstraction has 19313 states and 24761 transitions. [2024-10-23 21:12:08,818 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) [2024-10-23 21:12:08,818 INFO L276 IsEmpty]: Start isEmpty. Operand 19313 states and 24761 transitions. [2024-10-23 21:12:08,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-10-23 21:12:08,819 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:08,820 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] [2024-10-23 21:12:08,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:12:08,820 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:08,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:08,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1417603317, now seen corresponding path program 1 times [2024-10-23 21:12:08,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:08,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493902642] [2024-10-23 21:12:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:08,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:12:09,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:09,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493902642] [2024-10-23 21:12:09,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493902642] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:09,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:09,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:12:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093316662] [2024-10-23 21:12:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:09,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:09,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:09,070 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) [2024-10-23 21:12:11,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:11,770 INFO L93 Difference]: Finished difference Result 44941 states and 56979 transitions. [2024-10-23 21:12:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:11,771 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 [2024-10-23 21:12:11,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:11,819 INFO L225 Difference]: With dead ends: 44941 [2024-10-23 21:12:11,819 INFO L226 Difference]: Without dead ends: 25629 [2024-10-23 21:12:11,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:11,836 INFO L432 NwaCegarLoop]: 1043 mSDtfsCounter, 728 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2724 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:11,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1222 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2724 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-23 21:12:11,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25629 states. [2024-10-23 21:12:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25629 to 25621. [2024-10-23 21:12:12,088 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) [2024-10-23 21:12:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25621 states to 25621 states and 31596 transitions. [2024-10-23 21:12:12,118 INFO L78 Accepts]: Start accepts. Automaton has 25621 states and 31596 transitions. Word has length 132 [2024-10-23 21:12:12,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:12,118 INFO L471 AbstractCegarLoop]: Abstraction has 25621 states and 31596 transitions. [2024-10-23 21:12:12,118 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) [2024-10-23 21:12:12,119 INFO L276 IsEmpty]: Start isEmpty. Operand 25621 states and 31596 transitions. [2024-10-23 21:12:12,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-23 21:12:12,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:12,120 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] [2024-10-23 21:12:12,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:12:12,121 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:12,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:12,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1122043964, now seen corresponding path program 1 times [2024-10-23 21:12:12,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:12,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150885370] [2024-10-23 21:12:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:12,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-23 21:12:12,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:12,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150885370] [2024-10-23 21:12:12,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150885370] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:12,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:12,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:12:12,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890189436] [2024-10-23 21:12:12,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:12,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:12,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:12,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:12,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:12,251 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) [2024-10-23 21:12:15,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:15,055 INFO L93 Difference]: Finished difference Result 70952 states and 88337 transitions. [2024-10-23 21:12:15,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:15,055 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 [2024-10-23 21:12:15,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:15,102 INFO L225 Difference]: With dead ends: 70952 [2024-10-23 21:12:15,102 INFO L226 Difference]: Without dead ends: 46119 [2024-10-23 21:12:15,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:15,118 INFO L432 NwaCegarLoop]: 1083 mSDtfsCounter, 781 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:15,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1227 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:12:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46119 states. [2024-10-23 21:12:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46119 to 42945. [2024-10-23 21:12:15,475 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) [2024-10-23 21:12:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42945 states to 42945 states and 50340 transitions. [2024-10-23 21:12:15,517 INFO L78 Accepts]: Start accepts. Automaton has 42945 states and 50340 transitions. Word has length 170 [2024-10-23 21:12:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:15,517 INFO L471 AbstractCegarLoop]: Abstraction has 42945 states and 50340 transitions. [2024-10-23 21:12:15,517 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) [2024-10-23 21:12:15,518 INFO L276 IsEmpty]: Start isEmpty. Operand 42945 states and 50340 transitions. [2024-10-23 21:12:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-10-23 21:12:15,523 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:15,523 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] [2024-10-23 21:12:15,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:12:15,524 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:15,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash -380916346, now seen corresponding path program 1 times [2024-10-23 21:12:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:15,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555874163] [2024-10-23 21:12:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:15,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:15,804 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-23 21:12:15,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:15,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555874163] [2024-10-23 21:12:15,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555874163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:15,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:15,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:12:15,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522219124] [2024-10-23 21:12:15,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:15,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:15,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:15,807 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) [2024-10-23 21:12:18,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:18,274 INFO L93 Difference]: Finished difference Result 85102 states and 99882 transitions. [2024-10-23 21:12:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:18,275 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 [2024-10-23 21:12:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:18,317 INFO L225 Difference]: With dead ends: 85102 [2024-10-23 21:12:18,317 INFO L226 Difference]: Without dead ends: 42945 [2024-10-23 21:12:18,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:18,335 INFO L432 NwaCegarLoop]: 1062 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:18,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1191 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2502 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:12:18,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42945 states. [2024-10-23 21:12:18,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42945 to 42945. [2024-10-23 21:12:18,674 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) [2024-10-23 21:12:18,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42945 states to 42945 states and 50335 transitions. [2024-10-23 21:12:18,719 INFO L78 Accepts]: Start accepts. Automaton has 42945 states and 50335 transitions. Word has length 236 [2024-10-23 21:12:18,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:18,719 INFO L471 AbstractCegarLoop]: Abstraction has 42945 states and 50335 transitions. [2024-10-23 21:12:18,720 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) [2024-10-23 21:12:18,720 INFO L276 IsEmpty]: Start isEmpty. Operand 42945 states and 50335 transitions. [2024-10-23 21:12:18,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-10-23 21:12:18,722 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:18,722 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] [2024-10-23 21:12:18,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:12:18,723 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:18,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1015228177, now seen corresponding path program 1 times [2024-10-23 21:12:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:18,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975835995] [2024-10-23 21:12:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:18,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:12:18,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:18,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975835995] [2024-10-23 21:12:18,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975835995] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:18,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:18,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:12:18,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327977086] [2024-10-23 21:12:18,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:18,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:18,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:18,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:18,864 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) [2024-10-23 21:12:21,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:21,927 INFO L93 Difference]: Finished difference Result 104789 states and 124866 transitions. [2024-10-23 21:12:21,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:21,928 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 [2024-10-23 21:12:21,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:22,019 INFO L225 Difference]: With dead ends: 104789 [2024-10-23 21:12:22,019 INFO L226 Difference]: Without dead ends: 62632 [2024-10-23 21:12:22,043 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:22,044 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 824 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:22,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 926 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:12:22,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62632 states. [2024-10-23 21:12:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62632 to 60260. [2024-10-23 21:12:22,680 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) [2024-10-23 21:12:22,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60260 states to 60260 states and 70087 transitions. [2024-10-23 21:12:22,741 INFO L78 Accepts]: Start accepts. Automaton has 60260 states and 70087 transitions. Word has length 243 [2024-10-23 21:12:22,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:22,741 INFO L471 AbstractCegarLoop]: Abstraction has 60260 states and 70087 transitions. [2024-10-23 21:12:22,742 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) [2024-10-23 21:12:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 60260 states and 70087 transitions. [2024-10-23 21:12:22,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-10-23 21:12:22,744 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:22,744 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] [2024-10-23 21:12:22,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-23 21:12:22,744 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:22,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash -711991981, now seen corresponding path program 1 times [2024-10-23 21:12:22,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:22,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138505033] [2024-10-23 21:12:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:22,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 32 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:12:23,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:23,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138505033] [2024-10-23 21:12:23,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138505033] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:12:23,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968448101] [2024-10-23 21:12:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:23,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:23,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:12:23,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:12:23,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-23 21:12:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:23,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:12:23,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:12:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-23 21:12:23,836 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:12:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968448101] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:23,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:12:23,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:12:23,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196825727] [2024-10-23 21:12:23,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:23,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:23,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:23,838 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) [2024-10-23 21:12:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:26,570 INFO L93 Difference]: Finished difference Result 119730 states and 139380 transitions. [2024-10-23 21:12:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:26,571 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 [2024-10-23 21:12:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:26,645 INFO L225 Difference]: With dead ends: 119730 [2024-10-23 21:12:26,645 INFO L226 Difference]: Without dead ends: 60258 [2024-10-23 21:12:26,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:26,686 INFO L432 NwaCegarLoop]: 1355 mSDtfsCounter, 1189 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:26,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1435 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:12:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60258 states. [2024-10-23 21:12:27,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60258 to 60257. [2024-10-23 21:12:27,355 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) [2024-10-23 21:12:27,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60257 states to 60257 states and 68199 transitions. [2024-10-23 21:12:27,413 INFO L78 Accepts]: Start accepts. Automaton has 60257 states and 68199 transitions. Word has length 257 [2024-10-23 21:12:27,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:27,413 INFO L471 AbstractCegarLoop]: Abstraction has 60257 states and 68199 transitions. [2024-10-23 21:12:27,413 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) [2024-10-23 21:12:27,413 INFO L276 IsEmpty]: Start isEmpty. Operand 60257 states and 68199 transitions. [2024-10-23 21:12:27,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-10-23 21:12:27,417 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:27,417 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] [2024-10-23 21:12:27,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 21:12:27,618 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 [2024-10-23 21:12:27,618 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:27,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1287337128, now seen corresponding path program 1 times [2024-10-23 21:12:27,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:27,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467523417] [2024-10-23 21:12:27,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:27,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 161 proven. 110 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-23 21:12:28,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467523417] [2024-10-23 21:12:28,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467523417] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:12:28,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389318288] [2024-10-23 21:12:28,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:28,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:28,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:12:28,425 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) [2024-10-23 21:12:28,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-23 21:12:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:28,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:12:28,538 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:12:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-23 21:12:28,627 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:12:28,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389318288] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:28,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:12:28,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:12:28,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634567163] [2024-10-23 21:12:28,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:28,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:28,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:28,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:28,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:28,629 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) [2024-10-23 21:12:31,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:31,537 INFO L93 Difference]: Finished difference Result 119715 states and 135595 transitions. [2024-10-23 21:12:31,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:31,538 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 [2024-10-23 21:12:31,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:31,613 INFO L225 Difference]: With dead ends: 119715 [2024-10-23 21:12:31,613 INFO L226 Difference]: Without dead ends: 60246 [2024-10-23 21:12:31,654 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 [2024-10-23 21:12:31,655 INFO L432 NwaCegarLoop]: 683 mSDtfsCounter, 1072 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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, 2.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:31,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 814 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-23 21:12:31,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60246 states. [2024-10-23 21:12:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60246 to 60243. [2024-10-23 21:12:32,463 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) [2024-10-23 21:12:32,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60243 states to 60243 states and 65984 transitions. [2024-10-23 21:12:32,669 INFO L78 Accepts]: Start accepts. Automaton has 60243 states and 65984 transitions. Word has length 322 [2024-10-23 21:12:32,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:32,670 INFO L471 AbstractCegarLoop]: Abstraction has 60243 states and 65984 transitions. [2024-10-23 21:12:32,670 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) [2024-10-23 21:12:32,673 INFO L276 IsEmpty]: Start isEmpty. Operand 60243 states and 65984 transitions. [2024-10-23 21:12:32,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-10-23 21:12:32,681 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:32,681 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] [2024-10-23 21:12:32,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-23 21:12:32,881 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 [2024-10-23 21:12:32,881 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:32,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:32,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1022580295, now seen corresponding path program 1 times [2024-10-23 21:12:32,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:32,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223651189] [2024-10-23 21:12:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:32,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-23 21:12:33,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:33,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223651189] [2024-10-23 21:12:33,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223651189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:33,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:33,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:12:33,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899166447] [2024-10-23 21:12:33,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:33,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:12:33,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:33,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:12:33,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:12:33,073 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) [2024-10-23 21:12:38,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:38,378 INFO L93 Difference]: Finished difference Result 158471 states and 174231 transitions. [2024-10-23 21:12:38,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:12:38,379 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 [2024-10-23 21:12:38,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:38,504 INFO L225 Difference]: With dead ends: 158471 [2024-10-23 21:12:38,504 INFO L226 Difference]: Without dead ends: 99016 [2024-10-23 21:12:38,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:12:38,525 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 1710 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 6034 mSolverCounterSat, 1075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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, 4.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:38,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 795 Invalid, 7109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1075 Valid, 6034 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-10-23 21:12:38,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99016 states. [2024-10-23 21:12:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99016 to 75998. [2024-10-23 21:12:39,302 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) [2024-10-23 21:12:39,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75998 states to 75998 states and 82650 transitions. [2024-10-23 21:12:39,376 INFO L78 Accepts]: Start accepts. Automaton has 75998 states and 82650 transitions. Word has length 364 [2024-10-23 21:12:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:39,376 INFO L471 AbstractCegarLoop]: Abstraction has 75998 states and 82650 transitions. [2024-10-23 21:12:39,376 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) [2024-10-23 21:12:39,376 INFO L276 IsEmpty]: Start isEmpty. Operand 75998 states and 82650 transitions. [2024-10-23 21:12:39,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-10-23 21:12:39,380 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:39,380 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] [2024-10-23 21:12:39,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:12:39,380 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:39,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:39,381 INFO L85 PathProgramCache]: Analyzing trace with hash 433342640, now seen corresponding path program 1 times [2024-10-23 21:12:39,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:39,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077389505] [2024-10-23 21:12:39,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:39,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-23 21:12:39,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:39,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077389505] [2024-10-23 21:12:39,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077389505] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:39,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:39,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:12:39,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229133263] [2024-10-23 21:12:39,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:39,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:39,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:39,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:39,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:39,885 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) [2024-10-23 21:12:43,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:43,141 INFO L93 Difference]: Finished difference Result 175616 states and 192334 transitions. [2024-10-23 21:12:43,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:43,142 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 [2024-10-23 21:12:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:43,261 INFO L225 Difference]: With dead ends: 175616 [2024-10-23 21:12:43,261 INFO L226 Difference]: Without dead ends: 100406 [2024-10-23 21:12:43,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:43,287 INFO L432 NwaCegarLoop]: 809 mSDtfsCounter, 812 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:43,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 891 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [932 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-23 21:12:43,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100406 states. [2024-10-23 21:12:44,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100406 to 98814. [2024-10-23 21:12:44,308 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) [2024-10-23 21:12:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98814 states to 98814 states and 107774 transitions. [2024-10-23 21:12:44,440 INFO L78 Accepts]: Start accepts. Automaton has 98814 states and 107774 transitions. Word has length 377 [2024-10-23 21:12:44,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:44,441 INFO L471 AbstractCegarLoop]: Abstraction has 98814 states and 107774 transitions. [2024-10-23 21:12:44,441 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) [2024-10-23 21:12:44,441 INFO L276 IsEmpty]: Start isEmpty. Operand 98814 states and 107774 transitions. [2024-10-23 21:12:44,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-10-23 21:12:44,447 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:44,447 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] [2024-10-23 21:12:44,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:12:44,448 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:44,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1029502847, now seen corresponding path program 1 times [2024-10-23 21:12:44,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:44,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386073552] [2024-10-23 21:12:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:44,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 327 proven. 113 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-23 21:12:45,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:45,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386073552] [2024-10-23 21:12:45,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386073552] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:12:45,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382180166] [2024-10-23 21:12:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:45,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:45,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:12:45,636 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:12:45,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-23 21:12:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:45,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:12:45,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:12:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2024-10-23 21:12:45,788 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:12:45,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382180166] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:45,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:12:45,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-23 21:12:45,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651597978] [2024-10-23 21:12:45,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:45,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:45,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:45,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:45,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:12:45,789 INFO L87 Difference]: Start difference. First operand 98814 states and 107774 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:48,503 INFO L93 Difference]: Finished difference Result 198418 states and 216347 transitions. [2024-10-23 21:12:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 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 407 [2024-10-23 21:12:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:48,623 INFO L225 Difference]: With dead ends: 198418 [2024-10-23 21:12:48,623 INFO L226 Difference]: Without dead ends: 100392 [2024-10-23 21:12:48,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:12:48,681 INFO L432 NwaCegarLoop]: 1383 mSDtfsCounter, 1022 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:48,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1468 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:12:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100392 states. [2024-10-23 21:12:49,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100392 to 98806. [2024-10-23 21:12:49,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98806 states, 98805 states have (on average 1.0671018673144073) internal successors, (105435), 98805 states have internal predecessors, (105435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:50,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98806 states to 98806 states and 105435 transitions. [2024-10-23 21:12:50,089 INFO L78 Accepts]: Start accepts. Automaton has 98806 states and 105435 transitions. Word has length 407 [2024-10-23 21:12:50,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:50,089 INFO L471 AbstractCegarLoop]: Abstraction has 98806 states and 105435 transitions. [2024-10-23 21:12:50,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:50,090 INFO L276 IsEmpty]: Start isEmpty. Operand 98806 states and 105435 transitions. [2024-10-23 21:12:50,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-10-23 21:12:50,098 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:50,098 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:12:50,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-23 21:12:50,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:50,299 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:50,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:50,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1405064865, now seen corresponding path program 1 times [2024-10-23 21:12:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:50,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744909029] [2024-10-23 21:12:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2024-10-23 21:12:50,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:50,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744909029] [2024-10-23 21:12:50,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744909029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:50,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:12:50,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:12:50,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436910672] [2024-10-23 21:12:50,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:50,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:50,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:50,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:50,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:50,860 INFO L87 Difference]: Start difference. First operand 98806 states and 105435 transitions. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:54,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:12:54,773 INFO L93 Difference]: Finished difference Result 241039 states and 257880 transitions. [2024-10-23 21:12:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:12:54,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 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 447 [2024-10-23 21:12:54,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:12:54,952 INFO L225 Difference]: With dead ends: 241039 [2024-10-23 21:12:54,952 INFO L226 Difference]: Without dead ends: 143021 [2024-10-23 21:12:54,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:12:54,984 INFO L432 NwaCegarLoop]: 638 mSDtfsCounter, 844 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 3581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:12:54,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 750 Invalid, 3581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-10-23 21:12:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143021 states. [2024-10-23 21:12:56,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143021 to 118492. [2024-10-23 21:12:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118492 states, 118491 states have (on average 1.0664523043944265) internal successors, (126365), 118491 states have internal predecessors, (126365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:56,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118492 states to 118492 states and 126365 transitions. [2024-10-23 21:12:56,754 INFO L78 Accepts]: Start accepts. Automaton has 118492 states and 126365 transitions. Word has length 447 [2024-10-23 21:12:56,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:12:56,755 INFO L471 AbstractCegarLoop]: Abstraction has 118492 states and 126365 transitions. [2024-10-23 21:12:56,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:12:56,755 INFO L276 IsEmpty]: Start isEmpty. Operand 118492 states and 126365 transitions. [2024-10-23 21:12:56,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-10-23 21:12:56,764 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:12:56,765 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:12:56,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:12:56,766 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:12:56,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:12:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash -859707854, now seen corresponding path program 1 times [2024-10-23 21:12:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:12:56,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357466842] [2024-10-23 21:12:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:56,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:12:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 485 proven. 110 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-10-23 21:12:57,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:12:57,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357466842] [2024-10-23 21:12:57,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357466842] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:12:57,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591503241] [2024-10-23 21:12:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:12:57,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:12:57,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:12:57,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:12:57,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-23 21:12:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:12:57,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:12:57,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:12:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 512 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-23 21:12:58,064 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:12:58,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591503241] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:12:58,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:12:58,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-23 21:12:58,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12942449] [2024-10-23 21:12:58,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:12:58,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:12:58,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:12:58,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:12:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:12:58,066 INFO L87 Difference]: Start difference. First operand 118492 states and 126365 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:13:00,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:13:00,715 INFO L93 Difference]: Finished difference Result 230660 states and 246975 transitions. [2024-10-23 21:13:00,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:13:00,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 488 [2024-10-23 21:13:00,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:13:00,863 INFO L225 Difference]: With dead ends: 230660 [2024-10-23 21:13:00,864 INFO L226 Difference]: Without dead ends: 128702 [2024-10-23 21:13:00,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-23 21:13:00,914 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 1200 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 3069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:13:00,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1200 Valid, 388 Invalid, 3069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:13:01,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128702 states. [2024-10-23 21:13:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128702 to 128702. [2024-10-23 21:13:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128702 states, 128701 states have (on average 1.0603181016464518) internal successors, (136464), 128701 states have internal predecessors, (136464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:13:02,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128702 states to 128702 states and 136464 transitions. [2024-10-23 21:13:02,499 INFO L78 Accepts]: Start accepts. Automaton has 128702 states and 136464 transitions. Word has length 488 [2024-10-23 21:13:02,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:13:02,499 INFO L471 AbstractCegarLoop]: Abstraction has 128702 states and 136464 transitions. [2024-10-23 21:13:02,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:13:02,499 INFO L276 IsEmpty]: Start isEmpty. Operand 128702 states and 136464 transitions. [2024-10-23 21:13:02,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2024-10-23 21:13:02,511 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:13:02,511 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, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:13:02,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-23 21:13:02,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-23 21:13:02,712 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:13:02,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:13:02,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1720967934, now seen corresponding path program 1 times [2024-10-23 21:13:02,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:13:02,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654096859] [2024-10-23 21:13:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:13:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:13:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:13:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 270 proven. 110 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-23 21:13:03,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:13:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654096859] [2024-10-23 21:13:03,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654096859] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:13:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118726099] [2024-10-23 21:13:03,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:13:03,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:13:03,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:13:03,894 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-23 21:13:03,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-23 21:13:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:13:04,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:13:04,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:13:04,076 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2024-10-23 21:13:04,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:13:04,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118726099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:13:04,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:13:04,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-10-23 21:13:04,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862727286] [2024-10-23 21:13:04,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:13:04,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:13:04,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:13:04,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:13:04,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-23 21:13:04,078 INFO L87 Difference]: Start difference. First operand 128702 states and 136464 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)