./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_label52.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_label52.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 eceda023c7394c88c46221fb5ed6b67ae6e1976efca78e0b148b1f17e3b2b45b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:15:11,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:15:11,471 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:15:11,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:15:11,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:15:11,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:15:11,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:15:11,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:15:11,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:15:11,508 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:15:11,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:15:11,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:15:11,509 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:15:11,509 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:15:11,510 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:15:11,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:15:11,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:15:11,511 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:15:11,512 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:15:11,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:15:11,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:15:11,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:15:11,515 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:15:11,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:15:11,516 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:15:11,516 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:15:11,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:15:11,516 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:15:11,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:15:11,517 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:15:11,517 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:15:11,517 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:15:11,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:15:11,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:15:11,518 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:15:11,518 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:15:11,518 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:15:11,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:15:11,519 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:15:11,519 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:15:11,519 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:15:11,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:15:11,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eceda023c7394c88c46221fb5ed6b67ae6e1976efca78e0b148b1f17e3b2b45b [2024-10-23 21:15:11,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:15:11,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:15:11,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:15:11,744 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:15:11,746 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:15:11,747 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label52.c [2024-10-23 21:15:13,034 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:15:13,471 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:15:13,472 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label52.c [2024-10-23 21:15:13,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9a68e91/f9366acf0e514befb89e80d51cc9b7c9/FLAG94ca22900 [2024-10-23 21:15:13,662 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c9a68e91/f9366acf0e514befb89e80d51cc9b7c9 [2024-10-23 21:15:13,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:15:13,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:15:13,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:15:13,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:15:13,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:15:13,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:15:13" (1/1) ... [2024-10-23 21:15:13,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9b9ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:13, skipping insertion in model container [2024-10-23 21:15:13,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:15:13" (1/1) ... [2024-10-23 21:15:13,769 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:15:14,001 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_label52.c[9091,9104] [2024-10-23 21:15:14,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:15:14,550 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:15:14,573 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_label52.c[9091,9104] [2024-10-23 21:15:15,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:15:15,066 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:15:15,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15 WrapperNode [2024-10-23 21:15:15,067 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:15:15,068 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:15:15,068 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:15:15,068 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:15:15,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:15,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:15,469 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2024-10-23 21:15:15,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:15:15,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:15:15,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:15:15,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:15:15,480 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:15,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:15,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:15,867 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 21:15:15,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:15,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:16,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:16,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:16,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:16,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:16,224 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:15:16,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:15:16,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:15:16,226 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:15:16,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (1/1) ... [2024-10-23 21:15:16,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:15:16,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:15:16,255 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 21:15:16,259 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 21:15:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:15:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:15:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:15:16,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:15:16,346 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:15:16,348 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:15:20,608 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-10-23 21:15:20,612 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:15:20,687 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:15:20,691 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:15:20,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:15:20 BoogieIcfgContainer [2024-10-23 21:15:20,692 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:15:20,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:15:20,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:15:20,695 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:15:20,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:15:13" (1/3) ... [2024-10-23 21:15:20,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d43dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:15:20, skipping insertion in model container [2024-10-23 21:15:20,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:15:15" (2/3) ... [2024-10-23 21:15:20,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d43dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:15:20, skipping insertion in model container [2024-10-23 21:15:20,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:15:20" (3/3) ... [2024-10-23 21:15:20,701 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label52.c [2024-10-23 21:15:20,725 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:15:20,728 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:15:20,846 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:15:20,856 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;@2ad8cd74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:15:20,860 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:15:20,870 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 21:15:20,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-23 21:15:20,884 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:20,885 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:20,885 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:20,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash -596345556, now seen corresponding path program 1 times [2024-10-23 21:15:20,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:20,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525232276] [2024-10-23 21:15:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:20,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:21,062 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 21:15:21,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:21,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525232276] [2024-10-23 21:15:21,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525232276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:21,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:21,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:21,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913736141] [2024-10-23 21:15:21,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:21,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:15:21,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:21,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:15:21,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:15:21,099 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 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:21,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:21,191 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2024-10-23 21:15:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:15:21,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-23 21:15:21,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:21,216 INFO L225 Difference]: With dead ends: 2071 [2024-10-23 21:15:21,217 INFO L226 Difference]: Without dead ends: 1034 [2024-10-23 21:15:21,224 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 21:15:21,231 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 21:15:21,231 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 21:15:21,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-10-23 21:15:21,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2024-10-23 21:15:21,312 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 21:15:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2024-10-23 21:15:21,316 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 63 [2024-10-23 21:15:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:21,316 INFO L471 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2024-10-23 21:15:21,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2024-10-23 21:15:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-23 21:15:21,318 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:21,318 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:21,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:15:21,319 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:21,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:21,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1643738853, now seen corresponding path program 1 times [2024-10-23 21:15:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:21,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817276550] [2024-10-23 21:15:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:21,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:21,506 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 21:15:21,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817276550] [2024-10-23 21:15:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817276550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:21,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:21,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:21,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749030603] [2024-10-23 21:15:21,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:21,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:21,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:21,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:21,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:21,510 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:25,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:25,102 INFO L93 Difference]: Finished difference Result 2905 states and 5325 transitions. [2024-10-23 21:15:25,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:25,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-23 21:15:25,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:25,114 INFO L225 Difference]: With dead ends: 2905 [2024-10-23 21:15:25,114 INFO L226 Difference]: Without dead ends: 1872 [2024-10-23 21:15:25,116 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 21:15:25,120 INFO L432 NwaCegarLoop]: 939 mSDtfsCounter, 825 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:25,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1090 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-10-23 21:15:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2024-10-23 21:15:25,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1858. [2024-10-23 21:15:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1857 states have (on average 1.5444264943457189) internal successors, (2868), 1857 states have internal predecessors, (2868), 0 states have call successors, (0), 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 21:15:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2868 transitions. [2024-10-23 21:15:25,154 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2868 transitions. Word has length 63 [2024-10-23 21:15:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:25,155 INFO L471 AbstractCegarLoop]: Abstraction has 1858 states and 2868 transitions. [2024-10-23 21:15:25,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:15:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2868 transitions. [2024-10-23 21:15:25,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-23 21:15:25,158 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:25,159 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:25,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:15:25,159 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:25,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:25,160 INFO L85 PathProgramCache]: Analyzing trace with hash -949559770, now seen corresponding path program 1 times [2024-10-23 21:15:25,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:25,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785989695] [2024-10-23 21:15:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:25,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:25,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:25,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785989695] [2024-10-23 21:15:25,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785989695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:25,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:25,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:25,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713769334] [2024-10-23 21:15:25,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:25,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:25,364 INFO L87 Difference]: Start difference. First operand 1858 states and 2868 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 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 21:15:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:28,993 INFO L93 Difference]: Finished difference Result 5316 states and 8228 transitions. [2024-10-23 21:15:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:28,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2024-10-23 21:15:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:29,004 INFO L225 Difference]: With dead ends: 5316 [2024-10-23 21:15:29,005 INFO L226 Difference]: Without dead ends: 3459 [2024-10-23 21:15:29,007 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 21:15:29,012 INFO L432 NwaCegarLoop]: 1037 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:29,013 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1190 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-10-23 21:15:29,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2024-10-23 21:15:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3458. [2024-10-23 21:15:29,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 3457 states have (on average 1.380676887474689) internal successors, (4773), 3457 states have internal predecessors, (4773), 0 states have call successors, (0), 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 21:15:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 4773 transitions. [2024-10-23 21:15:29,068 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 4773 transitions. Word has length 135 [2024-10-23 21:15:29,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:29,069 INFO L471 AbstractCegarLoop]: Abstraction has 3458 states and 4773 transitions. [2024-10-23 21:15:29,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 0 states have call successors, (0), 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 21:15:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 4773 transitions. [2024-10-23 21:15:29,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-23 21:15:29,078 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:29,079 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:29,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:15:29,079 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:29,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1392869027, now seen corresponding path program 1 times [2024-10-23 21:15:29,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:29,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510917709] [2024-10-23 21:15:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:29,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:29,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:29,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510917709] [2024-10-23 21:15:29,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510917709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:29,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:29,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:15:29,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435155508] [2024-10-23 21:15:29,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:29,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:15:29,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:29,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:15:29,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:15:29,526 INFO L87 Difference]: Start difference. First operand 3458 states and 4773 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 21:15:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:33,877 INFO L93 Difference]: Finished difference Result 10869 states and 14767 transitions. [2024-10-23 21:15:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:15:33,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2024-10-23 21:15:33,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:33,897 INFO L225 Difference]: With dead ends: 10869 [2024-10-23 21:15:33,897 INFO L226 Difference]: Without dead ends: 7412 [2024-10-23 21:15:33,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-23 21:15:33,903 INFO L432 NwaCegarLoop]: 707 mSDtfsCounter, 2581 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:33,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 1001 Invalid, 4949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-10-23 21:15:33,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7412 states. [2024-10-23 21:15:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7412 to 7411. [2024-10-23 21:15:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 7410 states have (on average 1.269905533063428) internal successors, (9410), 7410 states have internal predecessors, (9410), 0 states have call successors, (0), 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 21:15:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 9410 transitions. [2024-10-23 21:15:34,004 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 9410 transitions. Word has length 149 [2024-10-23 21:15:34,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:34,005 INFO L471 AbstractCegarLoop]: Abstraction has 7411 states and 9410 transitions. [2024-10-23 21:15:34,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 21:15:34,005 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 9410 transitions. [2024-10-23 21:15:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-10-23 21:15:34,011 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:34,011 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:15:34,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:15:34,012 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:34,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1101318337, now seen corresponding path program 1 times [2024-10-23 21:15:34,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:34,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632073059] [2024-10-23 21:15:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:34,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:15:34,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:34,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632073059] [2024-10-23 21:15:34,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632073059] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:34,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:34,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:34,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870913004] [2024-10-23 21:15:34,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:34,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:34,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:34,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:34,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:34,239 INFO L87 Difference]: Start difference. First operand 7411 states and 9410 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 21:15:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:38,493 INFO L93 Difference]: Finished difference Result 20356 states and 26251 transitions. [2024-10-23 21:15:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:38,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2024-10-23 21:15:38,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:38,528 INFO L225 Difference]: With dead ends: 20356 [2024-10-23 21:15:38,528 INFO L226 Difference]: Without dead ends: 13733 [2024-10-23 21:15:38,538 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 21:15:38,539 INFO L432 NwaCegarLoop]: 849 mSDtfsCounter, 889 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2577 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 2577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:38,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 978 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-10-23 21:15:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13733 states. [2024-10-23 21:15:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13733 to 12936. [2024-10-23 21:15:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12936 states, 12935 states have (on average 1.2152299961345188) internal successors, (15719), 12935 states have internal predecessors, (15719), 0 states have call successors, (0), 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 21:15:38,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12936 states to 12936 states and 15719 transitions. [2024-10-23 21:15:38,759 INFO L78 Accepts]: Start accepts. Automaton has 12936 states and 15719 transitions. Word has length 230 [2024-10-23 21:15:38,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:38,761 INFO L471 AbstractCegarLoop]: Abstraction has 12936 states and 15719 transitions. [2024-10-23 21:15:38,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 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 21:15:38,761 INFO L276 IsEmpty]: Start isEmpty. Operand 12936 states and 15719 transitions. [2024-10-23 21:15:38,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-10-23 21:15:38,765 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:38,766 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:38,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:15:38,766 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:38,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:38,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1191048561, now seen corresponding path program 1 times [2024-10-23 21:15:38,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:38,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211828818] [2024-10-23 21:15:38,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:38,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:15:39,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:39,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211828818] [2024-10-23 21:15:39,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211828818] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:39,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:39,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:15:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771352701] [2024-10-23 21:15:39,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:39,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:39,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:39,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:39,013 INFO L87 Difference]: Start difference. First operand 12936 states and 15719 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 21:15:41,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:41,888 INFO L93 Difference]: Finished difference Result 31391 states and 39118 transitions. [2024-10-23 21:15:41,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:41,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2024-10-23 21:15:41,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:41,926 INFO L225 Difference]: With dead ends: 31391 [2024-10-23 21:15:41,926 INFO L226 Difference]: Without dead ends: 19243 [2024-10-23 21:15:41,938 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 21:15:41,940 INFO L432 NwaCegarLoop]: 807 mSDtfsCounter, 857 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:41,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 924 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-10-23 21:15:41,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19243 states. [2024-10-23 21:15:42,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19243 to 18446. [2024-10-23 21:15:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18446 states, 18445 states have (on average 1.20243968555164) internal successors, (22179), 18445 states have internal predecessors, (22179), 0 states have call successors, (0), 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 21:15:42,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18446 states to 18446 states and 22179 transitions. [2024-10-23 21:15:42,150 INFO L78 Accepts]: Start accepts. Automaton has 18446 states and 22179 transitions. Word has length 262 [2024-10-23 21:15:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:42,151 INFO L471 AbstractCegarLoop]: Abstraction has 18446 states and 22179 transitions. [2024-10-23 21:15:42,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 21:15:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 18446 states and 22179 transitions. [2024-10-23 21:15:42,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-10-23 21:15:42,156 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:42,156 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:42,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:15:42,156 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:42,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1255132825, now seen corresponding path program 1 times [2024-10-23 21:15:42,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:42,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201273852] [2024-10-23 21:15:42,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:42,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-23 21:15:42,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:42,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201273852] [2024-10-23 21:15:42,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201273852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:42,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:42,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:15:42,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821971547] [2024-10-23 21:15:42,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:42,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:42,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:42,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:42,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:42,343 INFO L87 Difference]: Start difference. First operand 18446 states and 22179 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 21:15:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:45,310 INFO L93 Difference]: Finished difference Result 42411 states and 52036 transitions. [2024-10-23 21:15:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:45,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 351 [2024-10-23 21:15:45,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:45,370 INFO L225 Difference]: With dead ends: 42411 [2024-10-23 21:15:45,376 INFO L226 Difference]: Without dead ends: 24753 [2024-10-23 21:15:45,406 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 21:15:45,407 INFO L432 NwaCegarLoop]: 1794 mSDtfsCounter, 806 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:45,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1944 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-23 21:15:45,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24753 states. [2024-10-23 21:15:45,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24753 to 23961. [2024-10-23 21:15:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23961 states, 23960 states have (on average 1.1787145242070116) internal successors, (28242), 23960 states have internal predecessors, (28242), 0 states have call successors, (0), 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 21:15:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23961 states to 23961 states and 28242 transitions. [2024-10-23 21:15:45,803 INFO L78 Accepts]: Start accepts. Automaton has 23961 states and 28242 transitions. Word has length 351 [2024-10-23 21:15:45,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:45,804 INFO L471 AbstractCegarLoop]: Abstraction has 23961 states and 28242 transitions. [2024-10-23 21:15:45,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 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 21:15:45,804 INFO L276 IsEmpty]: Start isEmpty. Operand 23961 states and 28242 transitions. [2024-10-23 21:15:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-10-23 21:15:45,809 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:45,809 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:45,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:15:45,810 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:45,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:45,810 INFO L85 PathProgramCache]: Analyzing trace with hash 976920973, now seen corresponding path program 1 times [2024-10-23 21:15:45,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:45,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384978275] [2024-10-23 21:15:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:45,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-23 21:15:46,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:46,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384978275] [2024-10-23 21:15:46,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384978275] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:46,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:46,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:15:46,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670065286] [2024-10-23 21:15:46,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:46,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:15:46,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:46,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:15:46,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:15:46,019 INFO L87 Difference]: Start difference. First operand 23961 states and 28242 transitions. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 21:15:52,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:52,083 INFO L93 Difference]: Finished difference Result 89063 states and 105283 transitions. [2024-10-23 21:15:52,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:15:52,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 360 [2024-10-23 21:15:52,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:52,175 INFO L225 Difference]: With dead ends: 89063 [2024-10-23 21:15:52,176 INFO L226 Difference]: Without dead ends: 65890 [2024-10-23 21:15:52,207 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 21:15:52,208 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 1742 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6026 mSolverCounterSat, 1213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 7239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1213 IncrementalHoareTripleChecker+Valid, 6026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:52,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1742 Valid, 635 Invalid, 7239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1213 Valid, 6026 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-10-23 21:15:52,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65890 states. [2024-10-23 21:15:52,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65890 to 64188. [2024-10-23 21:15:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64188 states, 64187 states have (on average 1.1559350024148192) internal successors, (74196), 64187 states have internal predecessors, (74196), 0 states have call successors, (0), 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 21:15:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64188 states to 64188 states and 74196 transitions. [2024-10-23 21:15:52,965 INFO L78 Accepts]: Start accepts. Automaton has 64188 states and 74196 transitions. Word has length 360 [2024-10-23 21:15:52,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:52,965 INFO L471 AbstractCegarLoop]: Abstraction has 64188 states and 74196 transitions. [2024-10-23 21:15:52,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 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 21:15:52,966 INFO L276 IsEmpty]: Start isEmpty. Operand 64188 states and 74196 transitions. [2024-10-23 21:15:52,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-10-23 21:15:52,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:52,971 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 21:15:52,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:15:52,971 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:52,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:52,972 INFO L85 PathProgramCache]: Analyzing trace with hash 124929498, now seen corresponding path program 1 times [2024-10-23 21:15:52,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:52,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59259936] [2024-10-23 21:15:52,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:52,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-10-23 21:15:53,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:53,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59259936] [2024-10-23 21:15:53,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59259936] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:53,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:15:53,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:15:53,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405525323] [2024-10-23 21:15:53,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:53,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:53,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:53,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:53,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:15:53,222 INFO L87 Difference]: Start difference. First operand 64188 states and 74196 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 21:15:56,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:15:56,870 INFO L93 Difference]: Finished difference Result 140991 states and 162392 transitions. [2024-10-23 21:15:56,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:15:56,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 360 [2024-10-23 21:15:56,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:15:56,967 INFO L225 Difference]: With dead ends: 140991 [2024-10-23 21:15:56,968 INFO L226 Difference]: Without dead ends: 77591 [2024-10-23 21:15:57,002 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 21:15:57,003 INFO L432 NwaCegarLoop]: 1017 mSDtfsCounter, 730 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:15:57,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1197 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-10-23 21:15:57,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77591 states. [2024-10-23 21:15:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77591 to 76793. [2024-10-23 21:15:57,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76793 states, 76792 states have (on average 1.1395848525888113) internal successors, (87511), 76792 states have internal predecessors, (87511), 0 states have call successors, (0), 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 21:15:58,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76793 states to 76793 states and 87511 transitions. [2024-10-23 21:15:58,023 INFO L78 Accepts]: Start accepts. Automaton has 76793 states and 87511 transitions. Word has length 360 [2024-10-23 21:15:58,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:15:58,023 INFO L471 AbstractCegarLoop]: Abstraction has 76793 states and 87511 transitions. [2024-10-23 21:15:58,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 2 states have internal predecessors, (205), 0 states have call successors, (0), 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 21:15:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand 76793 states and 87511 transitions. [2024-10-23 21:15:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-10-23 21:15:58,029 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:15:58,030 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:15:58,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:15:58,030 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:15:58,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:15:58,031 INFO L85 PathProgramCache]: Analyzing trace with hash -525049118, now seen corresponding path program 1 times [2024-10-23 21:15:58,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:15:58,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6934075] [2024-10-23 21:15:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:58,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:15:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 292 proven. 113 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-23 21:15:59,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:15:59,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6934075] [2024-10-23 21:15:59,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6934075] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:15:59,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776264869] [2024-10-23 21:15:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:15:59,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:15:59,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:15:59,422 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 21:15:59,423 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 21:15:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:15:59,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:15:59,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:15:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-10-23 21:15:59,755 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:15:59,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776264869] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:15:59,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:15:59,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-23 21:15:59,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702399945] [2024-10-23 21:15:59,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:15:59,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:15:59,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:15:59,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:15:59,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:15:59,757 INFO L87 Difference]: Start difference. First operand 76793 states and 87511 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 21:16:02,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:02,976 INFO L93 Difference]: Finished difference Result 152796 states and 174228 transitions. [2024-10-23 21:16:02,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:02,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 389 [2024-10-23 21:16:02,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:03,053 INFO L225 Difference]: With dead ends: 152796 [2024-10-23 21:16:03,054 INFO L226 Difference]: Without dead ends: 76791 [2024-10-23 21:16:03,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:16:03,084 INFO L432 NwaCegarLoop]: 1360 mSDtfsCounter, 1122 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:03,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1440 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-23 21:16:03,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76791 states. [2024-10-23 21:16:04,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76791 to 76003. [2024-10-23 21:16:04,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76003 states, 76002 states have (on average 1.1082339938422674) internal successors, (84228), 76002 states have internal predecessors, (84228), 0 states have call successors, (0), 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 21:16:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76003 states to 76003 states and 84228 transitions. [2024-10-23 21:16:04,257 INFO L78 Accepts]: Start accepts. Automaton has 76003 states and 84228 transitions. Word has length 389 [2024-10-23 21:16:04,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:04,257 INFO L471 AbstractCegarLoop]: Abstraction has 76003 states and 84228 transitions. [2024-10-23 21:16:04,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 21:16:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 76003 states and 84228 transitions. [2024-10-23 21:16:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-10-23 21:16:04,266 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:04,267 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:04,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-23 21:16:04,467 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,SelfDestructingSolverStorable9 [2024-10-23 21:16:04,468 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:04,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:04,469 INFO L85 PathProgramCache]: Analyzing trace with hash -958867008, now seen corresponding path program 1 times [2024-10-23 21:16:04,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:04,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520637509] [2024-10-23 21:16:04,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:04,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-10-23 21:16:04,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:04,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520637509] [2024-10-23 21:16:04,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520637509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:04,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:04,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:16:04,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245652710] [2024-10-23 21:16:04,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:04,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:04,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:04,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:04,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:04,923 INFO L87 Difference]: Start difference. First operand 76003 states and 84228 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 21:16:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:08,609 INFO L93 Difference]: Finished difference Result 170116 states and 190567 transitions. [2024-10-23 21:16:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:08,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 419 [2024-10-23 21:16:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:08,854 INFO L225 Difference]: With dead ends: 170116 [2024-10-23 21:16:08,855 INFO L226 Difference]: Without dead ends: 94901 [2024-10-23 21:16:08,875 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 21:16:08,876 INFO L432 NwaCegarLoop]: 823 mSDtfsCounter, 902 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:08,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 907 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-23 21:16:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94901 states. [2024-10-23 21:16:09,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94901 to 93309. [2024-10-23 21:16:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93309 states, 93308 states have (on average 1.1153170146182536) internal successors, (104068), 93308 states have internal predecessors, (104068), 0 states have call successors, (0), 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 21:16:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93309 states to 93309 states and 104068 transitions. [2024-10-23 21:16:10,093 INFO L78 Accepts]: Start accepts. Automaton has 93309 states and 104068 transitions. Word has length 419 [2024-10-23 21:16:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:10,095 INFO L471 AbstractCegarLoop]: Abstraction has 93309 states and 104068 transitions. [2024-10-23 21:16:10,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 21:16:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 93309 states and 104068 transitions. [2024-10-23 21:16:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-10-23 21:16:10,119 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:10,119 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-23 21:16:10,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:16:10,123 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:10,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash 350888773, now seen corresponding path program 1 times [2024-10-23 21:16:10,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:10,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12926461] [2024-10-23 21:16:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:10,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:10,723 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-23 21:16:10,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:10,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12926461] [2024-10-23 21:16:10,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12926461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:10,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:10,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:16:10,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110780706] [2024-10-23 21:16:10,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:10,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:10,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:10,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:10,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:10,725 INFO L87 Difference]: Start difference. First operand 93309 states and 104068 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 21:16:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:14,273 INFO L93 Difference]: Finished difference Result 185839 states and 207364 transitions. [2024-10-23 21:16:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:14,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 457 [2024-10-23 21:16:14,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:14,511 INFO L225 Difference]: With dead ends: 185839 [2024-10-23 21:16:14,511 INFO L226 Difference]: Without dead ends: 93318 [2024-10-23 21:16:14,547 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 21:16:14,547 INFO L432 NwaCegarLoop]: 1715 mSDtfsCounter, 795 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2507 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 2507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:14,547 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1864 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 2507 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-23 21:16:14,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93318 states. [2024-10-23 21:16:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93318 to 93299. [2024-10-23 21:16:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93299 states, 93298 states have (on average 1.0810521125854788) internal successors, (100860), 93298 states have internal predecessors, (100860), 0 states have call successors, (0), 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 21:16:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93299 states to 93299 states and 100860 transitions. [2024-10-23 21:16:15,562 INFO L78 Accepts]: Start accepts. Automaton has 93299 states and 100860 transitions. Word has length 457 [2024-10-23 21:16:15,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:15,563 INFO L471 AbstractCegarLoop]: Abstraction has 93299 states and 100860 transitions. [2024-10-23 21:16:15,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 21:16:15,563 INFO L276 IsEmpty]: Start isEmpty. Operand 93299 states and 100860 transitions. [2024-10-23 21:16:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-10-23 21:16:15,576 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:15,576 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:15,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:16:15,577 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:15,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:15,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1144203411, now seen corresponding path program 1 times [2024-10-23 21:16:15,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:15,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21485692] [2024-10-23 21:16:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:15,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-23 21:16:15,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:15,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21485692] [2024-10-23 21:16:15,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21485692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:15,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:15,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:16:15,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452046607] [2024-10-23 21:16:15,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:15,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:15,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:15,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:15,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:15,975 INFO L87 Difference]: Start difference. First operand 93299 states and 100860 transitions. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 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 21:16:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:19,125 INFO L93 Difference]: Finished difference Result 192870 states and 208132 transitions. [2024-10-23 21:16:19,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:19,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 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 485 [2024-10-23 21:16:19,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:19,240 INFO L225 Difference]: With dead ends: 192870 [2024-10-23 21:16:19,240 INFO L226 Difference]: Without dead ends: 99572 [2024-10-23 21:16:19,286 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 21:16:19,286 INFO L432 NwaCegarLoop]: 1491 mSDtfsCounter, 1023 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2349 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:19,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1624 Invalid, 2938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2349 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:16:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99572 states. [2024-10-23 21:16:20,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99572 to 92481. [2024-10-23 21:16:20,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92481 states, 92480 states have (on average 1.0580666089965398) internal successors, (97850), 92480 states have internal predecessors, (97850), 0 states have call successors, (0), 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 21:16:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92481 states to 92481 states and 97850 transitions. [2024-10-23 21:16:20,490 INFO L78 Accepts]: Start accepts. Automaton has 92481 states and 97850 transitions. Word has length 485 [2024-10-23 21:16:20,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:20,490 INFO L471 AbstractCegarLoop]: Abstraction has 92481 states and 97850 transitions. [2024-10-23 21:16:20,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 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 21:16:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 92481 states and 97850 transitions. [2024-10-23 21:16:20,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2024-10-23 21:16:20,504 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:20,504 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:20,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:16:20,505 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:20,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1464186427, now seen corresponding path program 1 times [2024-10-23 21:16:20,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:20,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682233371] [2024-10-23 21:16:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:20,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:21,818 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 361 proven. 113 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-23 21:16:21,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682233371] [2024-10-23 21:16:21,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682233371] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:16:21,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664334576] [2024-10-23 21:16:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:21,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:16:21,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:16:21,821 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 21:16:21,822 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 21:16:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:21,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-23 21:16:21,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:16:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-10-23 21:16:22,177 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:16:22,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664334576] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:22,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:16:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-10-23 21:16:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275402508] [2024-10-23 21:16:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:22,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:22,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:22,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:22,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:16:22,182 INFO L87 Difference]: Start difference. First operand 92481 states and 97850 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 21:16:24,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:24,985 INFO L93 Difference]: Finished difference Result 180994 states and 192671 transitions. [2024-10-23 21:16:24,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:24,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 493 [2024-10-23 21:16:24,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:25,107 INFO L225 Difference]: With dead ends: 180994 [2024-10-23 21:16:25,107 INFO L226 Difference]: Without dead ends: 102687 [2024-10-23 21:16:25,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:16:25,157 INFO L432 NwaCegarLoop]: 353 mSDtfsCounter, 1126 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 3056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:25,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 365 Invalid, 3056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:16:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102687 states. [2024-10-23 21:16:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102687 to 102687. [2024-10-23 21:16:26,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102687 states, 102686 states have (on average 1.057554096955768) internal successors, (108596), 102686 states have internal predecessors, (108596), 0 states have call successors, (0), 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 21:16:26,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102687 states to 102687 states and 108596 transitions. [2024-10-23 21:16:26,409 INFO L78 Accepts]: Start accepts. Automaton has 102687 states and 108596 transitions. Word has length 493 [2024-10-23 21:16:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:26,410 INFO L471 AbstractCegarLoop]: Abstraction has 102687 states and 108596 transitions. [2024-10-23 21:16:26,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 21:16:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 102687 states and 108596 transitions. [2024-10-23 21:16:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2024-10-23 21:16:26,420 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:26,420 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-23 21:16:26,434 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 21:16:26,624 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,SelfDestructingSolverStorable13 [2024-10-23 21:16:26,625 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:26,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:26,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1079612756, now seen corresponding path program 1 times [2024-10-23 21:16:26,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:26,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731351226] [2024-10-23 21:16:26,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:26,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 361 proven. 113 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-23 21:16:28,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:28,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731351226] [2024-10-23 21:16:28,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731351226] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:16:28,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941966507] [2024-10-23 21:16:28,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:28,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:16:28,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:16:28,217 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 21:16:28,219 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 21:16:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:28,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-23 21:16:28,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:16:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-10-23 21:16:28,872 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-23 21:16:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941966507] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:28,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-23 21:16:28,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-10-23 21:16:28,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020474636] [2024-10-23 21:16:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:28,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:28,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:16:28,875 INFO L87 Difference]: Start difference. First operand 102687 states and 108596 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 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 21:16:31,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:31,741 INFO L93 Difference]: Finished difference Result 195935 states and 207572 transitions. [2024-10-23 21:16:31,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:31,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 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 509 [2024-10-23 21:16:31,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:31,865 INFO L225 Difference]: With dead ends: 195935 [2024-10-23 21:16:31,865 INFO L226 Difference]: Without dead ends: 105845 [2024-10-23 21:16:31,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:16:31,925 INFO L432 NwaCegarLoop]: 989 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2431 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:31,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1118 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2431 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-23 21:16:32,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105845 states. [2024-10-23 21:16:33,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105845 to 105836. [2024-10-23 21:16:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105836 states, 105835 states have (on average 1.0517409174658667) internal successors, (111311), 105835 states have internal predecessors, (111311), 0 states have call successors, (0), 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 21:16:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105836 states to 105836 states and 111311 transitions. [2024-10-23 21:16:33,295 INFO L78 Accepts]: Start accepts. Automaton has 105836 states and 111311 transitions. Word has length 509 [2024-10-23 21:16:33,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:33,296 INFO L471 AbstractCegarLoop]: Abstraction has 105836 states and 111311 transitions. [2024-10-23 21:16:33,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 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 21:16:33,296 INFO L276 IsEmpty]: Start isEmpty. Operand 105836 states and 111311 transitions. [2024-10-23 21:16:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-10-23 21:16:33,307 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:33,307 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:33,327 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 21:16:33,508 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 21:16:33,509 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:33,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:33,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1332555812, now seen corresponding path program 1 times [2024-10-23 21:16:33,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:33,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728935209] [2024-10-23 21:16:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:33,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2024-10-23 21:16:33,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:33,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728935209] [2024-10-23 21:16:33,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728935209] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:33,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:33,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:16:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693445536] [2024-10-23 21:16:33,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:33,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:33,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:33,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:33,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:33,737 INFO L87 Difference]: Start difference. First operand 105836 states and 111311 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 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 21:16:36,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:16:36,080 INFO L93 Difference]: Finished difference Result 196695 states and 207191 transitions. [2024-10-23 21:16:36,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:16:36,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 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 548 [2024-10-23 21:16:36,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:16:36,202 INFO L225 Difference]: With dead ends: 196695 [2024-10-23 21:16:36,202 INFO L226 Difference]: Without dead ends: 105033 [2024-10-23 21:16:36,254 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 21:16:36,255 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 1557 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1447 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:16:36,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 273 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1447 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:16:36,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105033 states. [2024-10-23 21:16:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105033 to 105032. [2024-10-23 21:16:37,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105032 states, 105031 states have (on average 1.0504422503832203) internal successors, (110329), 105031 states have internal predecessors, (110329), 0 states have call successors, (0), 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 21:16:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105032 states to 105032 states and 110329 transitions. [2024-10-23 21:16:37,953 INFO L78 Accepts]: Start accepts. Automaton has 105032 states and 110329 transitions. Word has length 548 [2024-10-23 21:16:37,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:16:37,954 INFO L471 AbstractCegarLoop]: Abstraction has 105032 states and 110329 transitions. [2024-10-23 21:16:37,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 0 states have call successors, (0), 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 21:16:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 105032 states and 110329 transitions. [2024-10-23 21:16:37,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2024-10-23 21:16:37,970 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:16:37,970 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:16:37,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:16:37,970 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:16:37,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:16:37,971 INFO L85 PathProgramCache]: Analyzing trace with hash 660680026, now seen corresponding path program 1 times [2024-10-23 21:16:37,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:16:37,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736661317] [2024-10-23 21:16:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:16:37,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:16:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:16:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-10-23 21:16:39,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:16:39,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736661317] [2024-10-23 21:16:39,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736661317] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:16:39,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:16:39,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:16:39,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575756951] [2024-10-23 21:16:39,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:16:39,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:16:39,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:16:39,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:16:39,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:16:39,162 INFO L87 Difference]: Start difference. First operand 105032 states and 110329 transitions. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)