./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/Problem17_label48.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/Problem17_label48.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 0d929df4a838f03b0a70e3f4a24ac63ec6782a4f298757e5a2174a7cc8e9071c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-23 21:33:04,976 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-23 21:33:05,044 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-23 21:33:05,049 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-23 21:33:05,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-23 21:33:05,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-23 21:33:05,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-23 21:33:05,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-23 21:33:05,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-23 21:33:05,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-23 21:33:05,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-23 21:33:05,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-23 21:33:05,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-23 21:33:05,084 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-23 21:33:05,085 INFO L153 SettingsManager]: * Use SBE=true [2024-10-23 21:33:05,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-23 21:33:05,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-23 21:33:05,085 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-23 21:33:05,086 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-23 21:33:05,086 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-23 21:33:05,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-23 21:33:05,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-23 21:33:05,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-23 21:33:05,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-23 21:33:05,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-23 21:33:05,089 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-23 21:33:05,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-23 21:33:05,089 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-23 21:33:05,089 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-23 21:33:05,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-23 21:33:05,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-23 21:33:05,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-23 21:33:05,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:33:05,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-23 21:33:05,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-23 21:33:05,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-23 21:33:05,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-23 21:33:05,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-23 21:33:05,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-23 21:33:05,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-23 21:33:05,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-23 21:33:05,093 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-23 21:33:05,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d929df4a838f03b0a70e3f4a24ac63ec6782a4f298757e5a2174a7cc8e9071c [2024-10-23 21:33:05,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-23 21:33:05,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-23 21:33:05,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-23 21:33:05,393 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-23 21:33:05,394 INFO L274 PluginConnector]: CDTParser initialized [2024-10-23 21:33:05,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label48.c [2024-10-23 21:33:06,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-23 21:33:07,232 INFO L384 CDTParser]: Found 1 translation units. [2024-10-23 21:33:07,234 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label48.c [2024-10-23 21:33:07,259 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/132ba216e/9351caf8a1b64e3593fbb322a6512898/FLAGbdae12cb9 [2024-10-23 21:33:07,274 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/132ba216e/9351caf8a1b64e3593fbb322a6512898 [2024-10-23 21:33:07,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-23 21:33:07,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-23 21:33:07,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-23 21:33:07,282 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-23 21:33:07,288 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-23 21:33:07,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:33:07" (1/1) ... [2024-10-23 21:33:07,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5cfc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:07, skipping insertion in model container [2024-10-23 21:33:07,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:33:07" (1/1) ... [2024-10-23 21:33:07,435 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-23 21:33:07,679 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/Problem17_label48.c[6493,6506] [2024-10-23 21:33:08,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:33:08,169 INFO L200 MainTranslator]: Completed pre-run [2024-10-23 21:33:08,199 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/Problem17_label48.c[6493,6506] [2024-10-23 21:33:08,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-23 21:33:08,518 INFO L204 MainTranslator]: Completed translation [2024-10-23 21:33:08,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08 WrapperNode [2024-10-23 21:33:08,519 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-23 21:33:08,520 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-23 21:33:08,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-23 21:33:08,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-23 21:33:08,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:08,570 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:08,884 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-10-23 21:33:08,884 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-23 21:33:08,885 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-23 21:33:08,885 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-23 21:33:08,885 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-23 21:33:08,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:08,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:08,950 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:09,172 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 21:33:09,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:09,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:09,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:09,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:09,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:09,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:09,448 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-23 21:33:09,451 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-23 21:33:09,451 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-23 21:33:09,452 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-23 21:33:09,453 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (1/1) ... [2024-10-23 21:33:09,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-23 21:33:09,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:33:09,483 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 21:33:09,489 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 21:33:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-23 21:33:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-23 21:33:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-23 21:33:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-23 21:33:09,588 INFO L238 CfgBuilder]: Building ICFG [2024-10-23 21:33:09,590 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-23 21:33:12,767 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-10-23 21:33:12,768 INFO L287 CfgBuilder]: Performing block encoding [2024-10-23 21:33:12,833 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-23 21:33:12,834 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-23 21:33:12,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:33:12 BoogieIcfgContainer [2024-10-23 21:33:12,834 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-23 21:33:12,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-23 21:33:12,836 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-23 21:33:12,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-23 21:33:12,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:33:07" (1/3) ... [2024-10-23 21:33:12,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dbaca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:33:12, skipping insertion in model container [2024-10-23 21:33:12,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:33:08" (2/3) ... [2024-10-23 21:33:12,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dbaca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:33:12, skipping insertion in model container [2024-10-23 21:33:12,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:33:12" (3/3) ... [2024-10-23 21:33:12,844 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label48.c [2024-10-23 21:33:12,864 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-23 21:33:12,864 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-23 21:33:12,948 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-23 21:33:12,955 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;@47b28c28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-23 21:33:12,956 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-23 21:33:12,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 21:33:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-23 21:33:12,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:12,972 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] [2024-10-23 21:33:12,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:12,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash -255333436, now seen corresponding path program 1 times [2024-10-23 21:33:12,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:12,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788781440] [2024-10-23 21:33:12,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:12,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:13,178 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 21:33:13,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:13,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788781440] [2024-10-23 21:33:13,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788781440] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:13,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:13,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:33:13,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550874671] [2024-10-23 21:33:13,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:13,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-23 21:33:13,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:13,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-23 21:33:13,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-23 21:33:13,215 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 21:33:13,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:13,298 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2024-10-23 21:33:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-23 21:33:13,304 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-10-23 21:33:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:13,322 INFO L225 Difference]: With dead ends: 1055 [2024-10-23 21:33:13,323 INFO L226 Difference]: Without dead ends: 526 [2024-10-23 21:33:13,327 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 21:33:13,333 INFO L432 NwaCegarLoop]: 935 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, 935 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 21:33:13,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-23 21:33:13,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-10-23 21:33:13,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2024-10-23 21:33:13,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 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 21:33:13,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2024-10-23 21:33:13,415 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 42 [2024-10-23 21:33:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:13,416 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2024-10-23 21:33:13,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 21:33:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2024-10-23 21:33:13,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-23 21:33:13,417 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:13,418 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] [2024-10-23 21:33:13,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-23 21:33:13,419 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:13,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:13,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1355722073, now seen corresponding path program 1 times [2024-10-23 21:33:13,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:13,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157414136] [2024-10-23 21:33:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:13,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:13,639 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 21:33:13,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157414136] [2024-10-23 21:33:13,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157414136] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:13,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:13,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:33:13,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799344492] [2024-10-23 21:33:13,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:13,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:13,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:13,646 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 21:33:15,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:15,848 INFO L93 Difference]: Finished difference Result 1501 states and 2698 transitions. [2024-10-23 21:33:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:15,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-10-23 21:33:15,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:15,854 INFO L225 Difference]: With dead ends: 1501 [2024-10-23 21:33:15,854 INFO L226 Difference]: Without dead ends: 976 [2024-10-23 21:33:15,855 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 21:33:15,856 INFO L432 NwaCegarLoop]: 373 mSDtfsCounter, 429 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:15,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 448 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:33:15,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-10-23 21:33:15,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2024-10-23 21:33:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.5541795665634675) internal successors, (1506), 969 states have internal predecessors, (1506), 0 states have call successors, (0), 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 21:33:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1506 transitions. [2024-10-23 21:33:15,900 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1506 transitions. Word has length 42 [2024-10-23 21:33:15,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:15,900 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1506 transitions. [2024-10-23 21:33:15,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 21:33:15,901 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1506 transitions. [2024-10-23 21:33:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-23 21:33:15,903 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:15,904 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, 1, 1, 1, 1, 1, 1, 1, 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 21:33:15,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-23 21:33:15,904 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:15,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:15,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1399040878, now seen corresponding path program 1 times [2024-10-23 21:33:15,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:15,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083628578] [2024-10-23 21:33:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:15,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:33:16,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:16,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083628578] [2024-10-23 21:33:16,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083628578] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:16,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:16,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:33:16,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747210652] [2024-10-23 21:33:16,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:16,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:16,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:16,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:16,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:16,112 INFO L87 Difference]: Start difference. First operand 970 states and 1506 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 21:33:18,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:18,242 INFO L93 Difference]: Finished difference Result 2814 states and 4381 transitions. [2024-10-23 21:33:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:18,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2024-10-23 21:33:18,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:18,249 INFO L225 Difference]: With dead ends: 2814 [2024-10-23 21:33:18,250 INFO L226 Difference]: Without dead ends: 1845 [2024-10-23 21:33:18,253 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 21:33:18,254 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:18,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 578 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-23 21:33:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2024-10-23 21:33:18,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1840. [2024-10-23 21:33:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1840 states, 1839 states have (on average 1.3507340946166395) internal successors, (2484), 1839 states have internal predecessors, (2484), 0 states have call successors, (0), 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 21:33:18,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1840 states to 1840 states and 2484 transitions. [2024-10-23 21:33:18,297 INFO L78 Accepts]: Start accepts. Automaton has 1840 states and 2484 transitions. Word has length 109 [2024-10-23 21:33:18,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:18,299 INFO L471 AbstractCegarLoop]: Abstraction has 1840 states and 2484 transitions. [2024-10-23 21:33:18,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 21:33:18,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1840 states and 2484 transitions. [2024-10-23 21:33:18,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-10-23 21:33:18,305 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:18,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:18,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-23 21:33:18,306 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:18,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:18,308 INFO L85 PathProgramCache]: Analyzing trace with hash 119554252, now seen corresponding path program 1 times [2024-10-23 21:33:18,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:18,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811028224] [2024-10-23 21:33:18,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:18,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:33:18,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:18,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811028224] [2024-10-23 21:33:18,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811028224] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:18,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:18,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:18,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906975704] [2024-10-23 21:33:18,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:18,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:33:18,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:18,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:33:18,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:33:18,677 INFO L87 Difference]: Start difference. First operand 1840 states and 2484 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 21:33:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:22,055 INFO L93 Difference]: Finished difference Result 6766 states and 9262 transitions. [2024-10-23 21:33:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:33:22,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2024-10-23 21:33:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:22,073 INFO L225 Difference]: With dead ends: 6766 [2024-10-23 21:33:22,073 INFO L226 Difference]: Without dead ends: 4927 [2024-10-23 21:33:22,080 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 21:33:22,081 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 925 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2517 mSolverCounterSat, 774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 774 IncrementalHoareTripleChecker+Valid, 2517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:22,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 283 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [774 Valid, 2517 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-10-23 21:33:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4927 states. [2024-10-23 21:33:22,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4927 to 4874. [2024-10-23 21:33:22,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4874 states, 4873 states have (on average 1.287092140365278) internal successors, (6272), 4873 states have internal predecessors, (6272), 0 states have call successors, (0), 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 21:33:22,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4874 states to 4874 states and 6272 transitions. [2024-10-23 21:33:22,166 INFO L78 Accepts]: Start accepts. Automaton has 4874 states and 6272 transitions. Word has length 112 [2024-10-23 21:33:22,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:22,168 INFO L471 AbstractCegarLoop]: Abstraction has 4874 states and 6272 transitions. [2024-10-23 21:33:22,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 21:33:22,169 INFO L276 IsEmpty]: Start isEmpty. Operand 4874 states and 6272 transitions. [2024-10-23 21:33:22,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-10-23 21:33:22,176 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:22,180 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, 2, 2, 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] [2024-10-23 21:33:22,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-23 21:33:22,180 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:22,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:22,181 INFO L85 PathProgramCache]: Analyzing trace with hash 806678517, now seen corresponding path program 1 times [2024-10-23 21:33:22,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:22,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990377761] [2024-10-23 21:33:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:22,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:22,427 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-23 21:33:22,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:22,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990377761] [2024-10-23 21:33:22,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990377761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:22,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:22,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:33:22,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844913969] [2024-10-23 21:33:22,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:22,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:22,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:22,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:22,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:22,434 INFO L87 Difference]: Start difference. First operand 4874 states and 6272 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 21:33:24,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:24,303 INFO L93 Difference]: Finished difference Result 14435 states and 18549 transitions. [2024-10-23 21:33:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:24,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 178 [2024-10-23 21:33:24,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:24,333 INFO L225 Difference]: With dead ends: 14435 [2024-10-23 21:33:24,333 INFO L226 Difference]: Without dead ends: 8276 [2024-10-23 21:33:24,344 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 21:33:24,347 INFO L432 NwaCegarLoop]: 514 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:24,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:33:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2024-10-23 21:33:24,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 6570. [2024-10-23 21:33:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6570 states, 6569 states have (on average 1.1796316029837113) internal successors, (7749), 6569 states have internal predecessors, (7749), 0 states have call successors, (0), 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 21:33:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6570 states to 6570 states and 7749 transitions. [2024-10-23 21:33:24,473 INFO L78 Accepts]: Start accepts. Automaton has 6570 states and 7749 transitions. Word has length 178 [2024-10-23 21:33:24,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:24,474 INFO L471 AbstractCegarLoop]: Abstraction has 6570 states and 7749 transitions. [2024-10-23 21:33:24,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 21:33:24,475 INFO L276 IsEmpty]: Start isEmpty. Operand 6570 states and 7749 transitions. [2024-10-23 21:33:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-10-23 21:33:24,481 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:24,481 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, 2, 2, 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] [2024-10-23 21:33:24,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-23 21:33:24,482 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:24,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:24,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1033672419, now seen corresponding path program 1 times [2024-10-23 21:33:24,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:24,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326203371] [2024-10-23 21:33:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:24,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:33:24,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:24,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326203371] [2024-10-23 21:33:24,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326203371] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:24,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:24,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897102040] [2024-10-23 21:33:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:24,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:24,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:24,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:24,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:24,740 INFO L87 Difference]: Start difference. First operand 6570 states and 7749 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 21:33:26,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:26,470 INFO L93 Difference]: Finished difference Result 16549 states and 19924 transitions. [2024-10-23 21:33:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:26,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2024-10-23 21:33:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:26,499 INFO L225 Difference]: With dead ends: 16549 [2024-10-23 21:33:26,500 INFO L226 Difference]: Without dead ends: 9980 [2024-10-23 21:33:26,509 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 21:33:26,510 INFO L432 NwaCegarLoop]: 741 mSDtfsCounter, 499 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:26,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 798 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-23 21:33:26,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9980 states. [2024-10-23 21:33:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9980 to 9980. [2024-10-23 21:33:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9980 states, 9979 states have (on average 1.1698566990680428) internal successors, (11674), 9979 states have internal predecessors, (11674), 0 states have call successors, (0), 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 21:33:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9980 states to 9980 states and 11674 transitions. [2024-10-23 21:33:26,685 INFO L78 Accepts]: Start accepts. Automaton has 9980 states and 11674 transitions. Word has length 191 [2024-10-23 21:33:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:26,685 INFO L471 AbstractCegarLoop]: Abstraction has 9980 states and 11674 transitions. [2024-10-23 21:33:26,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 21:33:26,685 INFO L276 IsEmpty]: Start isEmpty. Operand 9980 states and 11674 transitions. [2024-10-23 21:33:26,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-23 21:33:26,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:26,688 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, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:33:26,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-23 21:33:26,690 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:26,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:26,691 INFO L85 PathProgramCache]: Analyzing trace with hash -857375653, now seen corresponding path program 1 times [2024-10-23 21:33:26,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:26,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788183393] [2024-10-23 21:33:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:26,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-10-23 21:33:26,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:26,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788183393] [2024-10-23 21:33:26,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788183393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:26,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:26,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:26,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860595631] [2024-10-23 21:33:26,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:26,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:26,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:26,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:26,906 INFO L87 Difference]: Start difference. First operand 9980 states and 11674 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:33:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:28,718 INFO L93 Difference]: Finished difference Result 24247 states and 28756 transitions. [2024-10-23 21:33:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:28,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2024-10-23 21:33:28,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:28,743 INFO L225 Difference]: With dead ends: 24247 [2024-10-23 21:33:28,744 INFO L226 Difference]: Without dead ends: 14268 [2024-10-23 21:33:28,755 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 21:33:28,756 INFO L432 NwaCegarLoop]: 385 mSDtfsCounter, 476 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:28,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 442 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-23 21:33:28,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14268 states. [2024-10-23 21:33:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14268 to 13396. [2024-10-23 21:33:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13396 states, 13395 states have (on average 1.1923852183650616) internal successors, (15972), 13395 states have internal predecessors, (15972), 0 states have call successors, (0), 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 21:33:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13396 states to 13396 states and 15972 transitions. [2024-10-23 21:33:28,970 INFO L78 Accepts]: Start accepts. Automaton has 13396 states and 15972 transitions. Word has length 196 [2024-10-23 21:33:28,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:28,970 INFO L471 AbstractCegarLoop]: Abstraction has 13396 states and 15972 transitions. [2024-10-23 21:33:28,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-23 21:33:28,971 INFO L276 IsEmpty]: Start isEmpty. Operand 13396 states and 15972 transitions. [2024-10-23 21:33:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-10-23 21:33:28,974 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:28,974 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-23 21:33:28,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-23 21:33:28,975 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:28,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash 864314517, now seen corresponding path program 1 times [2024-10-23 21:33:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157831984] [2024-10-23 21:33:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:33:29,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:29,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157831984] [2024-10-23 21:33:29,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157831984] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:29,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:29,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:29,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439403057] [2024-10-23 21:33:29,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:29,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:29,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:29,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:29,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:29,129 INFO L87 Difference]: Start difference. First operand 13396 states and 15972 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 21:33:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:31,085 INFO L93 Difference]: Finished difference Result 30623 states and 36859 transitions. [2024-10-23 21:33:31,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:31,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 241 [2024-10-23 21:33:31,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:31,117 INFO L225 Difference]: With dead ends: 30623 [2024-10-23 21:33:31,117 INFO L226 Difference]: Without dead ends: 17228 [2024-10-23 21:33:31,132 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 21:33:31,133 INFO L432 NwaCegarLoop]: 364 mSDtfsCounter, 459 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:31,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 408 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-23 21:33:31,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17228 states. [2024-10-23 21:33:31,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17228 to 13378. [2024-10-23 21:33:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13378 states, 13377 states have (on average 1.1906257008297825) internal successors, (15927), 13377 states have internal predecessors, (15927), 0 states have call successors, (0), 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 21:33:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13378 states to 13378 states and 15927 transitions. [2024-10-23 21:33:31,335 INFO L78 Accepts]: Start accepts. Automaton has 13378 states and 15927 transitions. Word has length 241 [2024-10-23 21:33:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:31,336 INFO L471 AbstractCegarLoop]: Abstraction has 13378 states and 15927 transitions. [2024-10-23 21:33:31,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 21:33:31,336 INFO L276 IsEmpty]: Start isEmpty. Operand 13378 states and 15927 transitions. [2024-10-23 21:33:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-10-23 21:33:31,341 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:31,341 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:33:31,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-23 21:33:31,342 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:31,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1438232309, now seen corresponding path program 1 times [2024-10-23 21:33:31,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:31,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734503283] [2024-10-23 21:33:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:31,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-23 21:33:31,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:31,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734503283] [2024-10-23 21:33:31,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734503283] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:31,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:31,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:31,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57952909] [2024-10-23 21:33:31,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:31,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:31,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:31,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:31,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:31,618 INFO L87 Difference]: Start difference. First operand 13378 states and 15927 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 21:33:33,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:33,713 INFO L93 Difference]: Finished difference Result 30621 states and 36710 transitions. [2024-10-23 21:33:33,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:33,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 258 [2024-10-23 21:33:33,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:33,746 INFO L225 Difference]: With dead ends: 30621 [2024-10-23 21:33:33,746 INFO L226 Difference]: Without dead ends: 17244 [2024-10-23 21:33:33,762 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 21:33:33,764 INFO L432 NwaCegarLoop]: 810 mSDtfsCounter, 356 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:33,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 884 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-23 21:33:33,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17244 states. [2024-10-23 21:33:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17244 to 16811. [2024-10-23 21:33:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16811 states, 16810 states have (on average 1.1727543129089828) internal successors, (19714), 16810 states have internal predecessors, (19714), 0 states have call successors, (0), 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 21:33:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16811 states to 16811 states and 19714 transitions. [2024-10-23 21:33:33,968 INFO L78 Accepts]: Start accepts. Automaton has 16811 states and 19714 transitions. Word has length 258 [2024-10-23 21:33:33,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:33,969 INFO L471 AbstractCegarLoop]: Abstraction has 16811 states and 19714 transitions. [2024-10-23 21:33:33,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 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 21:33:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 16811 states and 19714 transitions. [2024-10-23 21:33:33,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-10-23 21:33:33,974 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:33,975 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:33:33,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-23 21:33:33,975 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:33,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:33,976 INFO L85 PathProgramCache]: Analyzing trace with hash 117388878, now seen corresponding path program 1 times [2024-10-23 21:33:33,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:33,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447534486] [2024-10-23 21:33:33,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:33,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 220 proven. 70 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 21:33:34,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:34,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447534486] [2024-10-23 21:33:34,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447534486] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:33:34,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863955763] [2024-10-23 21:33:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:34,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:33:34,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:33:34,419 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 21:33:34,420 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 21:33:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:34,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-23 21:33:34,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:33:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 220 proven. 70 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 21:33:34,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:33:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-10-23 21:33:35,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863955763] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-23 21:33:35,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-23 21:33:35,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-10-23 21:33:35,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886103858] [2024-10-23 21:33:35,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:35,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:33:35,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:35,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:33:35,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:33:35,149 INFO L87 Difference]: Start difference. First operand 16811 states and 19714 transitions. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 21:33:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:37,938 INFO L93 Difference]: Finished difference Result 47274 states and 56055 transitions. [2024-10-23 21:33:37,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:33:37,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 266 [2024-10-23 21:33:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:37,988 INFO L225 Difference]: With dead ends: 47274 [2024-10-23 21:33:37,988 INFO L226 Difference]: Without dead ends: 28305 [2024-10-23 21:33:38,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-23 21:33:38,009 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 886 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 3021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:38,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 161 Invalid, 3021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-10-23 21:33:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28305 states. [2024-10-23 21:33:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28305 to 27874. [2024-10-23 21:33:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27874 states, 27873 states have (on average 1.1424676209952283) internal successors, (31844), 27873 states have internal predecessors, (31844), 0 states have call successors, (0), 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 21:33:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27874 states to 27874 states and 31844 transitions. [2024-10-23 21:33:38,450 INFO L78 Accepts]: Start accepts. Automaton has 27874 states and 31844 transitions. Word has length 266 [2024-10-23 21:33:38,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:38,450 INFO L471 AbstractCegarLoop]: Abstraction has 27874 states and 31844 transitions. [2024-10-23 21:33:38,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 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 21:33:38,451 INFO L276 IsEmpty]: Start isEmpty. Operand 27874 states and 31844 transitions. [2024-10-23 21:33:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-10-23 21:33:38,459 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:38,460 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:38,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-23 21:33:38,661 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 21:33:38,662 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:38,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1889244600, now seen corresponding path program 1 times [2024-10-23 21:33:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:38,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966053649] [2024-10-23 21:33:38,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:38,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-10-23 21:33:38,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:38,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966053649] [2024-10-23 21:33:38,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966053649] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:38,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:38,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975086334] [2024-10-23 21:33:38,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:38,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:38,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:38,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:38,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:38,921 INFO L87 Difference]: Start difference. First operand 27874 states and 31844 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 21:33:40,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:40,499 INFO L93 Difference]: Finished difference Result 64689 states and 73398 transitions. [2024-10-23 21:33:40,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:40,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 21:33:40,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:40,551 INFO L225 Difference]: With dead ends: 64689 [2024-10-23 21:33:40,551 INFO L226 Difference]: Without dead ends: 36816 [2024-10-23 21:33:40,576 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 21:33:40,576 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 484 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:40,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 280 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:33:40,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36816 states. [2024-10-23 21:33:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36816 to 36366. [2024-10-23 21:33:41,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36366 states, 36365 states have (on average 1.1224254090471608) internal successors, (40817), 36365 states have internal predecessors, (40817), 0 states have call successors, (0), 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 21:33:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36366 states to 36366 states and 40817 transitions. [2024-10-23 21:33:41,298 INFO L78 Accepts]: Start accepts. Automaton has 36366 states and 40817 transitions. Word has length 360 [2024-10-23 21:33:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:41,299 INFO L471 AbstractCegarLoop]: Abstraction has 36366 states and 40817 transitions. [2024-10-23 21:33:41,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 21:33:41,299 INFO L276 IsEmpty]: Start isEmpty. Operand 36366 states and 40817 transitions. [2024-10-23 21:33:41,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-10-23 21:33:41,307 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:41,307 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:41,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-23 21:33:41,308 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:41,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:41,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1972559560, now seen corresponding path program 1 times [2024-10-23 21:33:41,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:41,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252682505] [2024-10-23 21:33:41,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:41,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-23 21:33:41,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:41,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252682505] [2024-10-23 21:33:41,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252682505] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:41,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:41,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:41,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789070946] [2024-10-23 21:33:41,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:41,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:41,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:41,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:41,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:41,742 INFO L87 Difference]: Start difference. First operand 36366 states and 40817 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 21:33:43,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:43,276 INFO L93 Difference]: Finished difference Result 79525 states and 89551 transitions. [2024-10-23 21:33:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:43,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 381 [2024-10-23 21:33:43,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:43,433 INFO L225 Difference]: With dead ends: 79525 [2024-10-23 21:33:43,433 INFO L226 Difference]: Without dead ends: 43160 [2024-10-23 21:33:43,461 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 21:33:43,462 INFO L432 NwaCegarLoop]: 729 mSDtfsCounter, 272 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:43,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 790 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:33:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43160 states. [2024-10-23 21:33:44,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43160 to 43160. [2024-10-23 21:33:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43160 states, 43159 states have (on average 1.1083203966727682) internal successors, (47834), 43159 states have internal predecessors, (47834), 0 states have call successors, (0), 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 21:33:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43160 states to 43160 states and 47834 transitions. [2024-10-23 21:33:44,141 INFO L78 Accepts]: Start accepts. Automaton has 43160 states and 47834 transitions. Word has length 381 [2024-10-23 21:33:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:44,142 INFO L471 AbstractCegarLoop]: Abstraction has 43160 states and 47834 transitions. [2024-10-23 21:33:44,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 21:33:44,143 INFO L276 IsEmpty]: Start isEmpty. Operand 43160 states and 47834 transitions. [2024-10-23 21:33:44,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-10-23 21:33:44,155 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:44,156 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:44,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-23 21:33:44,156 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:44,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:44,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2053805907, now seen corresponding path program 1 times [2024-10-23 21:33:44,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:44,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418126434] [2024-10-23 21:33:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:44,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:33:44,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:44,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418126434] [2024-10-23 21:33:44,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418126434] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:44,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:44,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:44,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462067136] [2024-10-23 21:33:44,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:44,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:44,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:44,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:44,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:44,698 INFO L87 Difference]: Start difference. First operand 43160 states and 47834 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 21:33:46,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:46,387 INFO L93 Difference]: Finished difference Result 98272 states and 108801 transitions. [2024-10-23 21:33:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:46,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 404 [2024-10-23 21:33:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:46,463 INFO L225 Difference]: With dead ends: 98272 [2024-10-23 21:33:46,464 INFO L226 Difference]: Without dead ends: 55113 [2024-10-23 21:33:46,480 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 21:33:46,480 INFO L432 NwaCegarLoop]: 592 mSDtfsCounter, 336 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:46,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 633 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-23 21:33:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55113 states. [2024-10-23 21:33:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55113 to 52105. [2024-10-23 21:33:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52105 states, 52104 states have (on average 1.107707661599877) internal successors, (57716), 52104 states have internal predecessors, (57716), 0 states have call successors, (0), 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 21:33:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52105 states to 52105 states and 57716 transitions. [2024-10-23 21:33:47,379 INFO L78 Accepts]: Start accepts. Automaton has 52105 states and 57716 transitions. Word has length 404 [2024-10-23 21:33:47,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:47,380 INFO L471 AbstractCegarLoop]: Abstraction has 52105 states and 57716 transitions. [2024-10-23 21:33:47,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 21:33:47,380 INFO L276 IsEmpty]: Start isEmpty. Operand 52105 states and 57716 transitions. [2024-10-23 21:33:47,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-10-23 21:33:47,392 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:47,393 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:33:47,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-23 21:33:47,393 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:47,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:47,394 INFO L85 PathProgramCache]: Analyzing trace with hash 202466359, now seen corresponding path program 1 times [2024-10-23 21:33:47,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:47,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434976982] [2024-10-23 21:33:47,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:47,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:48,395 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-23 21:33:48,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:48,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434976982] [2024-10-23 21:33:48,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434976982] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:48,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:48,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:33:48,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823961333] [2024-10-23 21:33:48,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:48,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:33:48,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:48,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:33:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:33:48,398 INFO L87 Difference]: Start difference. First operand 52105 states and 57716 transitions. Second operand has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 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 21:33:51,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:51,328 INFO L93 Difference]: Finished difference Result 130212 states and 143848 transitions. [2024-10-23 21:33:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:33:51,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 447 [2024-10-23 21:33:51,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:51,407 INFO L225 Difference]: With dead ends: 130212 [2024-10-23 21:33:51,407 INFO L226 Difference]: Without dead ends: 77683 [2024-10-23 21:33:51,434 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:33:51,435 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 779 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 460 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 460 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:51,435 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 158 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [460 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-23 21:33:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77683 states. [2024-10-23 21:33:52,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77683 to 69115. [2024-10-23 21:33:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69115 states, 69114 states have (on average 1.1005006221604885) internal successors, (76060), 69114 states have internal predecessors, (76060), 0 states have call successors, (0), 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 21:33:52,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69115 states to 69115 states and 76060 transitions. [2024-10-23 21:33:52,456 INFO L78 Accepts]: Start accepts. Automaton has 69115 states and 76060 transitions. Word has length 447 [2024-10-23 21:33:52,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:52,457 INFO L471 AbstractCegarLoop]: Abstraction has 69115 states and 76060 transitions. [2024-10-23 21:33:52,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.5) internal successors, (366), 4 states have internal predecessors, (366), 0 states have call successors, (0), 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 21:33:52,458 INFO L276 IsEmpty]: Start isEmpty. Operand 69115 states and 76060 transitions. [2024-10-23 21:33:52,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-10-23 21:33:52,470 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:52,471 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:52,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-23 21:33:52,471 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:52,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:52,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1406970959, now seen corresponding path program 1 times [2024-10-23 21:33:52,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:52,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553839417] [2024-10-23 21:33:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:52,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:53,069 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:33:53,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553839417] [2024-10-23 21:33:53,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553839417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:53,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:53,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:33:53,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647171904] [2024-10-23 21:33:53,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:53,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:53,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:53,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:53,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:53,072 INFO L87 Difference]: Start difference. First operand 69115 states and 76060 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 21:33:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:54,837 INFO L93 Difference]: Finished difference Result 153594 states and 169223 transitions. [2024-10-23 21:33:54,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:54,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 454 [2024-10-23 21:33:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:54,935 INFO L225 Difference]: With dead ends: 153594 [2024-10-23 21:33:54,936 INFO L226 Difference]: Without dead ends: 84055 [2024-10-23 21:33:54,981 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 21:33:54,981 INFO L432 NwaCegarLoop]: 647 mSDtfsCounter, 446 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:54,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 698 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:33:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84055 states. [2024-10-23 21:33:55,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84055 to 82332. [2024-10-23 21:33:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82332 states, 82331 states have (on average 1.101116225965918) internal successors, (90656), 82331 states have internal predecessors, (90656), 0 states have call successors, (0), 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 21:33:56,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82332 states to 82332 states and 90656 transitions. [2024-10-23 21:33:56,313 INFO L78 Accepts]: Start accepts. Automaton has 82332 states and 90656 transitions. Word has length 454 [2024-10-23 21:33:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:56,314 INFO L471 AbstractCegarLoop]: Abstraction has 82332 states and 90656 transitions. [2024-10-23 21:33:56,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 21:33:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 82332 states and 90656 transitions. [2024-10-23 21:33:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-10-23 21:33:56,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:56,352 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, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:33:56,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-23 21:33:56,352 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:56,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:56,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1346558988, now seen corresponding path program 1 times [2024-10-23 21:33:56,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:56,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960002545] [2024-10-23 21:33:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:56,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:33:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-10-23 21:33:56,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:33:56,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960002545] [2024-10-23 21:33:56,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960002545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:33:56,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:33:56,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-23 21:33:56,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154064490] [2024-10-23 21:33:56,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:33:56,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:33:56,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:33:56,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:33:56,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:33:56,623 INFO L87 Difference]: Start difference. First operand 82332 states and 90656 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 21:33:57,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:33:57,777 INFO L93 Difference]: Finished difference Result 162523 states and 178774 transitions. [2024-10-23 21:33:57,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:33:57,777 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 468 [2024-10-23 21:33:57,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:33:57,855 INFO L225 Difference]: With dead ends: 162523 [2024-10-23 21:33:57,855 INFO L226 Difference]: Without dead ends: 80192 [2024-10-23 21:33:57,901 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 21:33:57,902 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 622 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-23 21:33:57,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 101 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-23 21:33:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80192 states. [2024-10-23 21:33:58,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80192 to 80177. [2024-10-23 21:33:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80177 states, 80176 states have (on average 1.0985581720215525) internal successors, (88078), 80176 states have internal predecessors, (88078), 0 states have call successors, (0), 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 21:33:58,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80177 states to 80177 states and 88078 transitions. [2024-10-23 21:33:58,975 INFO L78 Accepts]: Start accepts. Automaton has 80177 states and 88078 transitions. Word has length 468 [2024-10-23 21:33:58,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:33:58,975 INFO L471 AbstractCegarLoop]: Abstraction has 80177 states and 88078 transitions. [2024-10-23 21:33:58,975 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 21:33:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 80177 states and 88078 transitions. [2024-10-23 21:33:58,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-10-23 21:33:58,988 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:33:58,988 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-23 21:33:58,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-23 21:33:58,989 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:33:58,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:33:58,989 INFO L85 PathProgramCache]: Analyzing trace with hash 280560231, now seen corresponding path program 1 times [2024-10-23 21:33:58,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:33:58,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155515560] [2024-10-23 21:33:58,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:33:58,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:33:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:34:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 425 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-10-23 21:34:00,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:34:00,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155515560] [2024-10-23 21:34:00,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155515560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:34:00,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:34:00,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:34:00,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395828080] [2024-10-23 21:34:00,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:34:00,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:34:00,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:34:00,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:34:00,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:34:00,147 INFO L87 Difference]: Start difference. First operand 80177 states and 88078 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 21:34:02,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:34:02,805 INFO L93 Difference]: Finished difference Result 189349 states and 207624 transitions. [2024-10-23 21:34:02,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:34:02,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 486 [2024-10-23 21:34:02,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:34:02,928 INFO L225 Difference]: With dead ends: 189349 [2024-10-23 21:34:02,929 INFO L226 Difference]: Without dead ends: 104915 [2024-10-23 21:34:02,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:34:02,982 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 745 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:34:02,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 217 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:34:03,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104915 states. [2024-10-23 21:34:04,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104915 to 100610. [2024-10-23 21:34:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100610 states, 100609 states have (on average 1.0951207148465842) internal successors, (110179), 100609 states have internal predecessors, (110179), 0 states have call successors, (0), 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 21:34:04,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100610 states to 100610 states and 110179 transitions. [2024-10-23 21:34:04,471 INFO L78 Accepts]: Start accepts. Automaton has 100610 states and 110179 transitions. Word has length 486 [2024-10-23 21:34:04,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:34:04,472 INFO L471 AbstractCegarLoop]: Abstraction has 100610 states and 110179 transitions. [2024-10-23 21:34:04,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 21:34:04,472 INFO L276 IsEmpty]: Start isEmpty. Operand 100610 states and 110179 transitions. [2024-10-23 21:34:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-10-23 21:34:04,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:34:04,487 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, 5, 5, 5, 5, 5, 5, 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, 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, 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 21:34:04,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-23 21:34:04,487 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:34:04,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:34:04,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1049462703, now seen corresponding path program 1 times [2024-10-23 21:34:04,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:34:04,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361053604] [2024-10-23 21:34:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:34:04,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:34:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:34:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2024-10-23 21:34:04,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:34:04,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361053604] [2024-10-23 21:34:04,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361053604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:34:04,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:34:04,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-23 21:34:04,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734108454] [2024-10-23 21:34:04,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:34:04,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-23 21:34:04,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:34:04,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-23 21:34:04,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-23 21:34:04,931 INFO L87 Difference]: Start difference. First operand 100610 states and 110179 transitions. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 21:34:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:34:06,883 INFO L93 Difference]: Finished difference Result 213970 states and 234378 transitions. [2024-10-23 21:34:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-23 21:34:06,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 491 [2024-10-23 21:34:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:34:07,020 INFO L225 Difference]: With dead ends: 213970 [2024-10-23 21:34:07,020 INFO L226 Difference]: Without dead ends: 113361 [2024-10-23 21:34:07,080 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 21:34:07,081 INFO L432 NwaCegarLoop]: 272 mSDtfsCounter, 398 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-23 21:34:07,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 318 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-23 21:34:07,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113361 states. [2024-10-23 21:34:08,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113361 to 110799. [2024-10-23 21:34:08,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110799 states, 110798 states have (on average 1.0898572176393075) internal successors, (120754), 110798 states have internal predecessors, (120754), 0 states have call successors, (0), 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 21:34:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110799 states to 110799 states and 120754 transitions. [2024-10-23 21:34:08,775 INFO L78 Accepts]: Start accepts. Automaton has 110799 states and 120754 transitions. Word has length 491 [2024-10-23 21:34:08,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:34:08,776 INFO L471 AbstractCegarLoop]: Abstraction has 110799 states and 120754 transitions. [2024-10-23 21:34:08,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 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 21:34:08,776 INFO L276 IsEmpty]: Start isEmpty. Operand 110799 states and 120754 transitions. [2024-10-23 21:34:08,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2024-10-23 21:34:08,793 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:34:08,793 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, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:08,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-23 21:34:08,794 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:34:08,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:34:08,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1481142871, now seen corresponding path program 1 times [2024-10-23 21:34:08,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:34:08,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520145992] [2024-10-23 21:34:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:34:08,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:34:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:34:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 964 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2024-10-23 21:34:09,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:34:09,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520145992] [2024-10-23 21:34:09,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520145992] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-23 21:34:09,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-23 21:34:09,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-23 21:34:09,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676507968] [2024-10-23 21:34:09,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-23 21:34:09,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-23 21:34:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:34:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-23 21:34:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:34:09,699 INFO L87 Difference]: Start difference. First operand 110799 states and 120754 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 21:34:12,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-23 21:34:12,535 INFO L93 Difference]: Finished difference Result 232232 states and 253624 transitions. [2024-10-23 21:34:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-23 21:34:12,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 502 [2024-10-23 21:34:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-23 21:34:13,043 INFO L225 Difference]: With dead ends: 232232 [2024-10-23 21:34:13,044 INFO L226 Difference]: Without dead ends: 121009 [2024-10-23 21:34:13,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-23 21:34:13,099 INFO L432 NwaCegarLoop]: 682 mSDtfsCounter, 807 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-10-23 21:34:13,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 786 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2744 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-10-23 21:34:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121009 states. [2024-10-23 21:34:14,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121009 to 106944. [2024-10-23 21:34:14,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106944 states, 106943 states have (on average 1.0883648298626372) internal successors, (116393), 106943 states have internal predecessors, (116393), 0 states have call successors, (0), 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 21:34:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106944 states to 106944 states and 116393 transitions. [2024-10-23 21:34:14,399 INFO L78 Accepts]: Start accepts. Automaton has 106944 states and 116393 transitions. Word has length 502 [2024-10-23 21:34:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-23 21:34:14,400 INFO L471 AbstractCegarLoop]: Abstraction has 106944 states and 116393 transitions. [2024-10-23 21:34:14,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 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 21:34:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 106944 states and 116393 transitions. [2024-10-23 21:34:14,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2024-10-23 21:34:14,414 INFO L207 NwaCegarLoop]: Found error trace [2024-10-23 21:34:14,415 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-23 21:34:14,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-23 21:34:14,415 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-23 21:34:14,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-23 21:34:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1343868679, now seen corresponding path program 1 times [2024-10-23 21:34:14,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-23 21:34:14,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051816128] [2024-10-23 21:34:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:34:14,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-23 21:34:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:34:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 427 proven. 41 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-10-23 21:34:15,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-23 21:34:15,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051816128] [2024-10-23 21:34:15,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051816128] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-23 21:34:15,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078848107] [2024-10-23 21:34:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-23 21:34:15,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-23 21:34:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-23 21:34:15,511 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 21:34:15,512 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 21:34:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-23 21:34:15,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-23 21:34:15,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-23 21:34:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 455 proven. 82 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-10-23 21:34:16,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-23 21:34:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 455 proven. 82 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-10-23 21:34:17,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078848107] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-23 21:34:17,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-23 21:34:17,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-10-23 21:34:17,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966046423] [2024-10-23 21:34:17,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-23 21:34:17,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-23 21:34:17,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-23 21:34:17,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-23 21:34:17,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-23 21:34:17,322 INFO L87 Difference]: Start difference. First operand 106944 states and 116393 transitions. Second operand has 9 states, 9 states have (on average 100.77777777777777) internal successors, (907), 9 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)