./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/Problem15_label19.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label19.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d6129311caad436efd8aeb5ae8e8416588f34a9e58c3ca845c70b3697b0a672 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 16:18:11,631 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 16:18:11,719 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 16:18:11,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 16:18:11,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 16:18:11,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 16:18:11,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 16:18:11,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 16:18:11,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 16:18:11,774 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 16:18:11,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 16:18:11,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 16:18:11,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 16:18:11,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 16:18:11,778 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 16:18:11,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 16:18:11,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 16:18:11,779 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 16:18:11,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 16:18:11,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 16:18:11,780 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 16:18:11,784 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 16:18:11,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 16:18:11,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 16:18:11,784 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 16:18:11,785 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 16:18:11,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 16:18:11,785 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 16:18:11,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 16:18:11,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 16:18:11,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 16:18:11,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 16:18:11,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:18:11,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 16:18:11,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 16:18:11,787 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 16:18:11,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 16:18:11,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 16:18:11,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 16:18:11,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 16:18:11,790 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 16:18:11,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 16:18:11,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d6129311caad436efd8aeb5ae8e8416588f34a9e58c3ca845c70b3697b0a672 [2024-10-12 16:18:12,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 16:18:12,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 16:18:12,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 16:18:12,079 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 16:18:12,079 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 16:18:12,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label19.c [2024-10-12 16:18:13,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 16:18:13,894 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 16:18:13,894 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label19.c [2024-10-12 16:18:13,928 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d80bcfe1/66be5289480646f18d995b2c2bcd8001/FLAGe30c2ebc6 [2024-10-12 16:18:13,942 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d80bcfe1/66be5289480646f18d995b2c2bcd8001 [2024-10-12 16:18:13,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 16:18:13,946 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 16:18:13,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 16:18:13,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 16:18:13,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 16:18:13,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:18:13" (1/1) ... [2024-10-12 16:18:13,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e4f801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:13, skipping insertion in model container [2024-10-12 16:18:13,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:18:13" (1/1) ... [2024-10-12 16:18:14,020 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 16:18:14,257 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/Problem15_label19.c[5585,5598] [2024-10-12 16:18:14,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:18:14,609 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 16:18:14,639 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/Problem15_label19.c[5585,5598] [2024-10-12 16:18:14,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 16:18:14,892 INFO L204 MainTranslator]: Completed translation [2024-10-12 16:18:14,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14 WrapperNode [2024-10-12 16:18:14,896 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 16:18:14,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 16:18:14,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 16:18:14,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 16:18:14,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:14,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:15,079 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1760 [2024-10-12 16:18:15,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 16:18:15,081 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 16:18:15,081 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 16:18:15,081 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 16:18:15,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:15,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:15,110 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:15,248 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 16:18:15,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:15,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:15,311 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:15,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:15,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:15,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:15,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 16:18:15,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 16:18:15,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 16:18:15,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 16:18:15,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (1/1) ... [2024-10-12 16:18:15,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 16:18:15,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:18:15,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 16:18:15,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 16:18:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 16:18:15,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 16:18:15,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 16:18:15,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 16:18:15,563 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 16:18:15,565 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 16:18:17,767 INFO L? ?]: Removed 246 outVars from TransFormulas that were not future-live. [2024-10-12 16:18:17,767 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 16:18:17,856 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 16:18:17,857 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 16:18:17,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:18:17 BoogieIcfgContainer [2024-10-12 16:18:17,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 16:18:17,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 16:18:17,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 16:18:17,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 16:18:17,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:18:13" (1/3) ... [2024-10-12 16:18:17,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67306d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:18:17, skipping insertion in model container [2024-10-12 16:18:17,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:18:14" (2/3) ... [2024-10-12 16:18:17,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67306d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:18:17, skipping insertion in model container [2024-10-12 16:18:17,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:18:17" (3/3) ... [2024-10-12 16:18:17,869 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label19.c [2024-10-12 16:18:17,886 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 16:18:17,886 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 16:18:17,965 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 16:18:17,972 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;@20fc41ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 16:18:17,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 16:18:17,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-12 16:18:17,987 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:17,989 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:17,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:17,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:17,995 INFO L85 PathProgramCache]: Analyzing trace with hash -748454700, now seen corresponding path program 1 times [2024-10-12 16:18:18,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:18,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568226988] [2024-10-12 16:18:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:18,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:18:18,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:18,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568226988] [2024-10-12 16:18:18,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568226988] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:18,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:18,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:18:18,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262871664] [2024-10-12 16:18:18,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:18,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 16:18:18,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:18,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 16:18:18,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:18:18,240 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 1.9111111111111112) internal successors, (688), 361 states have internal predecessors, (688), 0 states have call successors, (0), 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 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:18,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:18,306 INFO L93 Difference]: Finished difference Result 723 states and 1375 transitions. [2024-10-12 16:18:18,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 16:18:18,312 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-10-12 16:18:18,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:18,326 INFO L225 Difference]: With dead ends: 723 [2024-10-12 16:18:18,326 INFO L226 Difference]: Without dead ends: 360 [2024-10-12 16:18:18,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 16:18:18,336 INFO L432 NwaCegarLoop]: 623 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, 623 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:18,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 16:18:18,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-12 16:18:18,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-10-12 16:18:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.7353760445682451) internal successors, (623), 359 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:18,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 623 transitions. [2024-10-12 16:18:18,390 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 623 transitions. Word has length 44 [2024-10-12 16:18:18,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:18,390 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 623 transitions. [2024-10-12 16:18:18,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 623 transitions. [2024-10-12 16:18:18,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-12 16:18:18,392 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:18,392 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:18,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 16:18:18,393 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:18,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:18,394 INFO L85 PathProgramCache]: Analyzing trace with hash 214297539, now seen corresponding path program 1 times [2024-10-12 16:18:18,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:18,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238722100] [2024-10-12 16:18:18,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:18,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:18:18,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:18,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238722100] [2024-10-12 16:18:18,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238722100] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:18,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:18,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:18:18,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199833588] [2024-10-12 16:18:18,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:18,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:18,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:18,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:18,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:18,587 INFO L87 Difference]: Start difference. First operand 360 states and 623 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:20,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:20,300 INFO L93 Difference]: Finished difference Result 1023 states and 1787 transitions. [2024-10-12 16:18:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:20,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2024-10-12 16:18:20,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:20,308 INFO L225 Difference]: With dead ends: 1023 [2024-10-12 16:18:20,309 INFO L226 Difference]: Without dead ends: 664 [2024-10-12 16:18:20,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:20,313 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 272 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:20,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 316 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-12 16:18:20,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-10-12 16:18:20,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 662. [2024-10-12 16:18:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.4826021180030258) internal successors, (980), 661 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 980 transitions. [2024-10-12 16:18:20,341 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 980 transitions. Word has length 44 [2024-10-12 16:18:20,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:20,342 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 980 transitions. [2024-10-12 16:18:20,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:20,342 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 980 transitions. [2024-10-12 16:18:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-12 16:18:20,345 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:20,345 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:20,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 16:18:20,346 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:20,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:20,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1291443637, now seen corresponding path program 1 times [2024-10-12 16:18:20,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:20,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131980904] [2024-10-12 16:18:20,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:20,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:18:20,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:20,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131980904] [2024-10-12 16:18:20,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131980904] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:20,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:20,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:18:20,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584127716] [2024-10-12 16:18:20,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:20,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:20,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:20,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:20,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:20,818 INFO L87 Difference]: Start difference. First operand 662 states and 980 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) [2024-10-12 16:18:22,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:22,099 INFO L93 Difference]: Finished difference Result 1623 states and 2314 transitions. [2024-10-12 16:18:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:22,099 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 [2024-10-12 16:18:22,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:22,103 INFO L225 Difference]: With dead ends: 1623 [2024-10-12 16:18:22,103 INFO L226 Difference]: Without dead ends: 962 [2024-10-12 16:18:22,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:22,106 INFO L432 NwaCegarLoop]: 297 mSDtfsCounter, 237 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:22,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 335 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-12 16:18:22,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-10-12 16:18:22,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 962. [2024-10-12 16:18:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 961 states have (on average 1.3631633714880333) internal successors, (1310), 961 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1310 transitions. [2024-10-12 16:18:22,137 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1310 transitions. Word has length 109 [2024-10-12 16:18:22,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:22,138 INFO L471 AbstractCegarLoop]: Abstraction has 962 states and 1310 transitions. [2024-10-12 16:18:22,138 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) [2024-10-12 16:18:22,139 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1310 transitions. [2024-10-12 16:18:22,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-10-12 16:18:22,142 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:22,142 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:22,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 16:18:22,143 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:22,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:22,146 INFO L85 PathProgramCache]: Analyzing trace with hash 942833368, now seen corresponding path program 1 times [2024-10-12 16:18:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:22,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577476775] [2024-10-12 16:18:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:22,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:18:22,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:22,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577476775] [2024-10-12 16:18:22,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577476775] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:22,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:22,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:18:22,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231604371] [2024-10-12 16:18:22,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:22,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:22,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:22,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:22,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:22,358 INFO L87 Difference]: Start difference. First operand 962 states and 1310 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) [2024-10-12 16:18:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:24,035 INFO L93 Difference]: Finished difference Result 2228 states and 3185 transitions. [2024-10-12 16:18:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:24,036 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 114 [2024-10-12 16:18:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:24,041 INFO L225 Difference]: With dead ends: 2228 [2024-10-12 16:18:24,041 INFO L226 Difference]: Without dead ends: 1566 [2024-10-12 16:18:24,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:24,043 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 258 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:24,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 314 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-12 16:18:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-10-12 16:18:24,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1265. [2024-10-12 16:18:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1264 states have (on average 1.3053797468354431) internal successors, (1650), 1264 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1650 transitions. [2024-10-12 16:18:24,067 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1650 transitions. Word has length 114 [2024-10-12 16:18:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:24,067 INFO L471 AbstractCegarLoop]: Abstraction has 1265 states and 1650 transitions. [2024-10-12 16:18:24,068 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) [2024-10-12 16:18:24,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1650 transitions. [2024-10-12 16:18:24,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-10-12 16:18:24,071 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:24,072 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:24,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 16:18:24,072 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:24,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:24,073 INFO L85 PathProgramCache]: Analyzing trace with hash -453003196, now seen corresponding path program 1 times [2024-10-12 16:18:24,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:24,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681489737] [2024-10-12 16:18:24,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:24,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:18:24,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:24,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681489737] [2024-10-12 16:18:24,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681489737] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:24,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:24,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:24,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169560002] [2024-10-12 16:18:24,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:24,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:24,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:24,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:24,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:24,244 INFO L87 Difference]: Start difference. First operand 1265 states and 1650 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:25,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:25,727 INFO L93 Difference]: Finished difference Result 3132 states and 4192 transitions. [2024-10-12 16:18:25,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:25,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-10-12 16:18:25,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:25,734 INFO L225 Difference]: With dead ends: 3132 [2024-10-12 16:18:25,735 INFO L226 Difference]: Without dead ends: 1868 [2024-10-12 16:18:25,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:25,737 INFO L432 NwaCegarLoop]: 569 mSDtfsCounter, 299 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:25,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 611 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:18:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2024-10-12 16:18:25,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1868. [2024-10-12 16:18:25,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 1.244242099625067) internal successors, (2323), 1867 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2323 transitions. [2024-10-12 16:18:25,770 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2323 transitions. Word has length 135 [2024-10-12 16:18:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:25,770 INFO L471 AbstractCegarLoop]: Abstraction has 1868 states and 2323 transitions. [2024-10-12 16:18:25,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2323 transitions. [2024-10-12 16:18:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-10-12 16:18:25,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:25,774 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2024-10-12 16:18:25,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 16:18:25,775 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:25,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:25,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1277204468, now seen corresponding path program 1 times [2024-10-12 16:18:25,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:25,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553597717] [2024-10-12 16:18:25,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:25,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-10-12 16:18:25,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:25,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553597717] [2024-10-12 16:18:25,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553597717] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:25,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:25,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:18:25,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963419598] [2024-10-12 16:18:25,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:26,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:26,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:26,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:26,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:26,001 INFO L87 Difference]: Start difference. First operand 1868 states and 2323 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:27,369 INFO L93 Difference]: Finished difference Result 5239 states and 6568 transitions. [2024-10-12 16:18:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:27,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 203 [2024-10-12 16:18:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:27,379 INFO L225 Difference]: With dead ends: 5239 [2024-10-12 16:18:27,379 INFO L226 Difference]: Without dead ends: 2774 [2024-10-12 16:18:27,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:27,383 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 257 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:27,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 331 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:18:27,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2024-10-12 16:18:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2770. [2024-10-12 16:18:27,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2770 states, 2769 states have (on average 1.1520404478150956) internal successors, (3190), 2769 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3190 transitions. [2024-10-12 16:18:27,428 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3190 transitions. Word has length 203 [2024-10-12 16:18:27,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:27,429 INFO L471 AbstractCegarLoop]: Abstraction has 2770 states and 3190 transitions. [2024-10-12 16:18:27,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:27,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3190 transitions. [2024-10-12 16:18:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-10-12 16:18:27,432 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:27,433 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:27,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 16:18:27,433 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:27,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:27,434 INFO L85 PathProgramCache]: Analyzing trace with hash 982052824, now seen corresponding path program 1 times [2024-10-12 16:18:27,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:27,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307877569] [2024-10-12 16:18:27,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:18:27,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:27,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307877569] [2024-10-12 16:18:27,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307877569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:27,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:27,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:27,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938533374] [2024-10-12 16:18:27,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:27,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:18:27,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:27,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:18:27,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:18:27,957 INFO L87 Difference]: Start difference. First operand 2770 states and 3190 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 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) [2024-10-12 16:18:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:30,134 INFO L93 Difference]: Finished difference Result 8251 states and 9470 transitions. [2024-10-12 16:18:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:18:30,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 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 277 [2024-10-12 16:18:30,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:30,150 INFO L225 Difference]: With dead ends: 8251 [2024-10-12 16:18:30,150 INFO L226 Difference]: Without dead ends: 5183 [2024-10-12 16:18:30,155 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:18:30,156 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 464 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:30,156 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 120 Invalid, 2008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-10-12 16:18:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2024-10-12 16:18:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 4573. [2024-10-12 16:18:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4572 states have (on average 1.155074365704287) internal successors, (5281), 4572 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 5281 transitions. [2024-10-12 16:18:30,239 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 5281 transitions. Word has length 277 [2024-10-12 16:18:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:30,240 INFO L471 AbstractCegarLoop]: Abstraction has 4573 states and 5281 transitions. [2024-10-12 16:18:30,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 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) [2024-10-12 16:18:30,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 5281 transitions. [2024-10-12 16:18:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-10-12 16:18:30,244 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:30,244 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:30,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 16:18:30,245 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:30,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:30,245 INFO L85 PathProgramCache]: Analyzing trace with hash 330621781, now seen corresponding path program 1 times [2024-10-12 16:18:30,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:30,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879723960] [2024-10-12 16:18:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:30,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:30,789 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-12 16:18:30,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:30,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879723960] [2024-10-12 16:18:30,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879723960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:30,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:30,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 16:18:30,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807380432] [2024-10-12 16:18:30,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:30,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:30,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:30,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:30,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:30,792 INFO L87 Difference]: Start difference. First operand 4573 states and 5281 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:31,983 INFO L93 Difference]: Finished difference Result 8846 states and 10258 transitions. [2024-10-12 16:18:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:31,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 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 321 [2024-10-12 16:18:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:31,996 INFO L225 Difference]: With dead ends: 8846 [2024-10-12 16:18:31,997 INFO L226 Difference]: Without dead ends: 4573 [2024-10-12 16:18:32,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:32,003 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:32,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 303 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:18:32,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2024-10-12 16:18:32,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 4573. [2024-10-12 16:18:32,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4572 states have (on average 1.1546369203849518) internal successors, (5279), 4572 states have internal predecessors, (5279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 5279 transitions. [2024-10-12 16:18:32,078 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 5279 transitions. Word has length 321 [2024-10-12 16:18:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:32,078 INFO L471 AbstractCegarLoop]: Abstraction has 4573 states and 5279 transitions. [2024-10-12 16:18:32,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 2 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:32,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 5279 transitions. [2024-10-12 16:18:32,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-10-12 16:18:32,083 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:32,085 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:32,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 16:18:32,085 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:32,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:32,086 INFO L85 PathProgramCache]: Analyzing trace with hash 409335655, now seen corresponding path program 1 times [2024-10-12 16:18:32,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:32,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732843709] [2024-10-12 16:18:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:32,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 85 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:18:33,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732843709] [2024-10-12 16:18:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732843709] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:18:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324278230] [2024-10-12 16:18:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:33,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:18:33,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:18:33,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:18:33,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 16:18:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:33,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:18:33,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:18:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-10-12 16:18:33,297 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:18:33,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324278230] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:33,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:18:33,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 16:18:33,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284487108] [2024-10-12 16:18:33,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:33,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:33,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:33,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:33,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:18:33,302 INFO L87 Difference]: Start difference. First operand 4573 states and 5279 transitions. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:34,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:34,368 INFO L93 Difference]: Finished difference Result 8847 states and 10259 transitions. [2024-10-12 16:18:34,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:34,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 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 395 [2024-10-12 16:18:34,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:34,382 INFO L225 Difference]: With dead ends: 8847 [2024-10-12 16:18:34,382 INFO L226 Difference]: Without dead ends: 4574 [2024-10-12 16:18:34,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:18:34,387 INFO L432 NwaCegarLoop]: 401 mSDtfsCounter, 340 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:34,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 412 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:18:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4574 states. [2024-10-12 16:18:34,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4574 to 3970. [2024-10-12 16:18:34,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 3969 states have (on average 1.1428571428571428) internal successors, (4536), 3969 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:34,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 4536 transitions. [2024-10-12 16:18:34,445 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 4536 transitions. Word has length 395 [2024-10-12 16:18:34,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:34,446 INFO L471 AbstractCegarLoop]: Abstraction has 3970 states and 4536 transitions. [2024-10-12 16:18:34,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:34,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 4536 transitions. [2024-10-12 16:18:34,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-10-12 16:18:34,452 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:34,452 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:34,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 16:18:34,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:18:34,654 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:34,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:34,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1775065923, now seen corresponding path program 1 times [2024-10-12 16:18:34,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:34,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6036659] [2024-10-12 16:18:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:34,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 16:18:35,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:35,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6036659] [2024-10-12 16:18:35,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6036659] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:35,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:35,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:35,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871176090] [2024-10-12 16:18:35,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:35,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:35,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:35,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:35,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:35,048 INFO L87 Difference]: Start difference. First operand 3970 states and 4536 transitions. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:36,520 INFO L93 Difference]: Finished difference Result 9445 states and 11015 transitions. [2024-10-12 16:18:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:36,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 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 401 [2024-10-12 16:18:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:36,535 INFO L225 Difference]: With dead ends: 9445 [2024-10-12 16:18:36,536 INFO L226 Difference]: Without dead ends: 5775 [2024-10-12 16:18:36,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:36,540 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 230 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:36,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 597 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:18:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5775 states. [2024-10-12 16:18:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5775 to 5767. [2024-10-12 16:18:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5767 states, 5766 states have (on average 1.1189732917100244) internal successors, (6452), 5766 states have internal predecessors, (6452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5767 states to 5767 states and 6452 transitions. [2024-10-12 16:18:36,632 INFO L78 Accepts]: Start accepts. Automaton has 5767 states and 6452 transitions. Word has length 401 [2024-10-12 16:18:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:36,633 INFO L471 AbstractCegarLoop]: Abstraction has 5767 states and 6452 transitions. [2024-10-12 16:18:36,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:36,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5767 states and 6452 transitions. [2024-10-12 16:18:36,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-10-12 16:18:36,636 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:36,637 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:36,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 16:18:36,637 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:36,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:36,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1097483394, now seen corresponding path program 1 times [2024-10-12 16:18:36,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:36,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000838232] [2024-10-12 16:18:36,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:36,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-10-12 16:18:37,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:37,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000838232] [2024-10-12 16:18:37,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000838232] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:37,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:37,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:37,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066413499] [2024-10-12 16:18:37,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:37,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:18:37,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:37,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:18:37,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:18:37,276 INFO L87 Difference]: Start difference. First operand 5767 states and 6452 transitions. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:39,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:39,111 INFO L93 Difference]: Finished difference Result 13344 states and 15005 transitions. [2024-10-12 16:18:39,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:18:39,112 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 457 [2024-10-12 16:18:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:39,126 INFO L225 Difference]: With dead ends: 13344 [2024-10-12 16:18:39,127 INFO L226 Difference]: Without dead ends: 7578 [2024-10-12 16:18:39,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:18:39,133 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 431 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:39,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 121 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-12 16:18:39,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7578 states. [2024-10-12 16:18:39,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7578 to 5770. [2024-10-12 16:18:39,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5770 states, 5769 states have (on average 1.1176980412549835) internal successors, (6448), 5769 states have internal predecessors, (6448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:39,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 6448 transitions. [2024-10-12 16:18:39,211 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 6448 transitions. Word has length 457 [2024-10-12 16:18:39,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:39,212 INFO L471 AbstractCegarLoop]: Abstraction has 5770 states and 6448 transitions. [2024-10-12 16:18:39,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 6448 transitions. [2024-10-12 16:18:39,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2024-10-12 16:18:39,216 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:39,217 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:39,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 16:18:39,217 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:39,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:39,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1993927307, now seen corresponding path program 1 times [2024-10-12 16:18:39,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:39,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923649310] [2024-10-12 16:18:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:39,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:39,685 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 275 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-10-12 16:18:39,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:39,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923649310] [2024-10-12 16:18:39,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923649310] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:39,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:39,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:39,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841086970] [2024-10-12 16:18:39,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:39,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:39,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:39,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:39,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:39,689 INFO L87 Difference]: Start difference. First operand 5770 states and 6448 transitions. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:40,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:40,641 INFO L93 Difference]: Finished difference Result 13040 states and 14826 transitions. [2024-10-12 16:18:40,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:40,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 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 495 [2024-10-12 16:18:40,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:40,653 INFO L225 Difference]: With dead ends: 13040 [2024-10-12 16:18:40,654 INFO L226 Difference]: Without dead ends: 7570 [2024-10-12 16:18:40,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:40,662 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 249 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:40,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 563 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:18:40,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7570 states. [2024-10-12 16:18:40,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7570 to 7564. [2024-10-12 16:18:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7564 states, 7563 states have (on average 1.1067036890122968) internal successors, (8370), 7563 states have internal predecessors, (8370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:40,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7564 states to 7564 states and 8370 transitions. [2024-10-12 16:18:40,751 INFO L78 Accepts]: Start accepts. Automaton has 7564 states and 8370 transitions. Word has length 495 [2024-10-12 16:18:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:40,752 INFO L471 AbstractCegarLoop]: Abstraction has 7564 states and 8370 transitions. [2024-10-12 16:18:40,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7564 states and 8370 transitions. [2024-10-12 16:18:40,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2024-10-12 16:18:40,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:40,759 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:40,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 16:18:40,759 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:40,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash 398202930, now seen corresponding path program 1 times [2024-10-12 16:18:40,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:40,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714008968] [2024-10-12 16:18:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:40,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-10-12 16:18:41,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:41,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714008968] [2024-10-12 16:18:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714008968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:41,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:41,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:41,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731889924] [2024-10-12 16:18:41,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:41,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:41,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:41,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:41,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:41,038 INFO L87 Difference]: Start difference. First operand 7564 states and 8370 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:42,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:42,111 INFO L93 Difference]: Finished difference Result 17818 states and 19982 transitions. [2024-10-12 16:18:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:42,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 554 [2024-10-12 16:18:42,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:42,128 INFO L225 Difference]: With dead ends: 17818 [2024-10-12 16:18:42,129 INFO L226 Difference]: Without dead ends: 9956 [2024-10-12 16:18:42,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:42,138 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 248 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:42,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 300 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:18:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9956 states. [2024-10-12 16:18:42,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9956 to 6362. [2024-10-12 16:18:42,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6362 states, 6361 states have (on average 1.09353875176859) internal successors, (6956), 6361 states have internal predecessors, (6956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 6956 transitions. [2024-10-12 16:18:42,224 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 6956 transitions. Word has length 554 [2024-10-12 16:18:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:42,225 INFO L471 AbstractCegarLoop]: Abstraction has 6362 states and 6956 transitions. [2024-10-12 16:18:42,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 6956 transitions. [2024-10-12 16:18:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2024-10-12 16:18:42,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:42,232 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:42,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 16:18:42,232 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:42,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:42,233 INFO L85 PathProgramCache]: Analyzing trace with hash -658911057, now seen corresponding path program 1 times [2024-10-12 16:18:42,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:42,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842257375] [2024-10-12 16:18:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:42,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-10-12 16:18:42,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:42,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842257375] [2024-10-12 16:18:42,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842257375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:42,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:42,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:42,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956150442] [2024-10-12 16:18:42,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:42,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:42,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:42,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:42,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:42,731 INFO L87 Difference]: Start difference. First operand 6362 states and 6956 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:43,818 INFO L93 Difference]: Finished difference Result 16921 states and 18577 transitions. [2024-10-12 16:18:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 611 [2024-10-12 16:18:43,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:43,838 INFO L225 Difference]: With dead ends: 16921 [2024-10-12 16:18:43,838 INFO L226 Difference]: Without dead ends: 10859 [2024-10-12 16:18:43,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:43,848 INFO L432 NwaCegarLoop]: 535 mSDtfsCounter, 253 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:43,848 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 567 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:18:43,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10859 states. [2024-10-12 16:18:43,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10859 to 10850. [2024-10-12 16:18:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10850 states, 10849 states have (on average 1.0813899898608166) internal successors, (11732), 10849 states have internal predecessors, (11732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10850 states to 10850 states and 11732 transitions. [2024-10-12 16:18:44,022 INFO L78 Accepts]: Start accepts. Automaton has 10850 states and 11732 transitions. Word has length 611 [2024-10-12 16:18:44,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:44,023 INFO L471 AbstractCegarLoop]: Abstraction has 10850 states and 11732 transitions. [2024-10-12 16:18:44,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 10850 states and 11732 transitions. [2024-10-12 16:18:44,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2024-10-12 16:18:44,039 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:44,040 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:44,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 16:18:44,041 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:44,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:44,041 INFO L85 PathProgramCache]: Analyzing trace with hash -492846785, now seen corresponding path program 1 times [2024-10-12 16:18:44,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:44,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721121996] [2024-10-12 16:18:44,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:44,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2024-10-12 16:18:44,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:44,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721121996] [2024-10-12 16:18:44,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721121996] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:44,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:44,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:44,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833622024] [2024-10-12 16:18:44,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:44,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:44,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:44,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:44,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:44,384 INFO L87 Difference]: Start difference. First operand 10850 states and 11732 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:45,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:45,549 INFO L93 Difference]: Finished difference Result 23791 states and 25815 transitions. [2024-10-12 16:18:45,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 618 [2024-10-12 16:18:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:45,573 INFO L225 Difference]: With dead ends: 23791 [2024-10-12 16:18:45,573 INFO L226 Difference]: Without dead ends: 13241 [2024-10-12 16:18:45,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:45,588 INFO L432 NwaCegarLoop]: 397 mSDtfsCounter, 299 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:45,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 416 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:18:45,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13241 states. [2024-10-12 16:18:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13241 to 11148. [2024-10-12 16:18:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11148 states, 11147 states have (on average 1.0840584910738316) internal successors, (12084), 11147 states have internal predecessors, (12084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11148 states to 11148 states and 12084 transitions. [2024-10-12 16:18:45,721 INFO L78 Accepts]: Start accepts. Automaton has 11148 states and 12084 transitions. Word has length 618 [2024-10-12 16:18:45,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:45,721 INFO L471 AbstractCegarLoop]: Abstraction has 11148 states and 12084 transitions. [2024-10-12 16:18:45,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:45,722 INFO L276 IsEmpty]: Start isEmpty. Operand 11148 states and 12084 transitions. [2024-10-12 16:18:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2024-10-12 16:18:45,729 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:45,730 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:45,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 16:18:45,730 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:45,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:45,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1696420244, now seen corresponding path program 1 times [2024-10-12 16:18:45,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:45,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492571393] [2024-10-12 16:18:45,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:45,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 349 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-10-12 16:18:46,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:46,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492571393] [2024-10-12 16:18:46,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492571393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:46,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:46,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:46,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899447341] [2024-10-12 16:18:46,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:46,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:46,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:46,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:46,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:46,117 INFO L87 Difference]: Start difference. First operand 11148 states and 12084 transitions. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:47,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:47,185 INFO L93 Difference]: Finished difference Result 22293 states and 24169 transitions. [2024-10-12 16:18:47,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:47,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 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 619 [2024-10-12 16:18:47,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:47,201 INFO L225 Difference]: With dead ends: 22293 [2024-10-12 16:18:47,201 INFO L226 Difference]: Without dead ends: 11445 [2024-10-12 16:18:47,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:47,215 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 438 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:47,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 67 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:18:47,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11445 states. [2024-10-12 16:18:47,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11445 to 11146. [2024-10-12 16:18:47,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11146 states, 11145 states have (on average 1.0838941229250785) internal successors, (12080), 11145 states have internal predecessors, (12080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:47,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11146 states to 11146 states and 12080 transitions. [2024-10-12 16:18:47,340 INFO L78 Accepts]: Start accepts. Automaton has 11146 states and 12080 transitions. Word has length 619 [2024-10-12 16:18:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:47,340 INFO L471 AbstractCegarLoop]: Abstraction has 11146 states and 12080 transitions. [2024-10-12 16:18:47,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 11146 states and 12080 transitions. [2024-10-12 16:18:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2024-10-12 16:18:47,349 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:47,350 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:47,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 16:18:47,351 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:47,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:47,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2111895400, now seen corresponding path program 1 times [2024-10-12 16:18:47,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:47,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481654993] [2024-10-12 16:18:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:47,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 432 trivial. 0 not checked. [2024-10-12 16:18:47,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:47,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481654993] [2024-10-12 16:18:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481654993] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:47,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:47,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:47,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79709531] [2024-10-12 16:18:47,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:47,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:47,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:47,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:47,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:47,724 INFO L87 Difference]: Start difference. First operand 11146 states and 12080 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:48,763 INFO L93 Difference]: Finished difference Result 26774 states and 29118 transitions. [2024-10-12 16:18:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:48,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 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 641 [2024-10-12 16:18:48,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:48,782 INFO L225 Difference]: With dead ends: 26774 [2024-10-12 16:18:48,782 INFO L226 Difference]: Without dead ends: 15928 [2024-10-12 16:18:48,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:48,793 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 295 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:48,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 202 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:18:48,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15928 states. [2024-10-12 16:18:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15928 to 13237. [2024-10-12 16:18:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13237 states, 13236 states have (on average 1.0769114536113629) internal successors, (14254), 13236 states have internal predecessors, (14254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:48,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13237 states to 13237 states and 14254 transitions. [2024-10-12 16:18:48,950 INFO L78 Accepts]: Start accepts. Automaton has 13237 states and 14254 transitions. Word has length 641 [2024-10-12 16:18:48,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:48,950 INFO L471 AbstractCegarLoop]: Abstraction has 13237 states and 14254 transitions. [2024-10-12 16:18:48,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:48,951 INFO L276 IsEmpty]: Start isEmpty. Operand 13237 states and 14254 transitions. [2024-10-12 16:18:48,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2024-10-12 16:18:48,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:48,960 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:48,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 16:18:48,961 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:48,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:48,961 INFO L85 PathProgramCache]: Analyzing trace with hash -2119625639, now seen corresponding path program 1 times [2024-10-12 16:18:48,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:48,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805015124] [2024-10-12 16:18:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:48,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2024-10-12 16:18:49,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:49,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805015124] [2024-10-12 16:18:49,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805015124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:49,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:49,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:49,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479527824] [2024-10-12 16:18:49,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:49,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:49,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:49,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:49,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:49,373 INFO L87 Difference]: Start difference. First operand 13237 states and 14254 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:50,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:50,435 INFO L93 Difference]: Finished difference Result 28267 states and 30579 transitions. [2024-10-12 16:18:50,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:50,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 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 658 [2024-10-12 16:18:50,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:50,452 INFO L225 Difference]: With dead ends: 28267 [2024-10-12 16:18:50,452 INFO L226 Difference]: Without dead ends: 15330 [2024-10-12 16:18:50,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:50,463 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 225 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:50,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 550 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-12 16:18:50,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15330 states. [2024-10-12 16:18:50,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15330 to 15031. [2024-10-12 16:18:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15031 states, 15030 states have (on average 1.0629407850964738) internal successors, (15976), 15030 states have internal predecessors, (15976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15031 states to 15031 states and 15976 transitions. [2024-10-12 16:18:50,617 INFO L78 Accepts]: Start accepts. Automaton has 15031 states and 15976 transitions. Word has length 658 [2024-10-12 16:18:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:50,618 INFO L471 AbstractCegarLoop]: Abstraction has 15031 states and 15976 transitions. [2024-10-12 16:18:50,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 15031 states and 15976 transitions. [2024-10-12 16:18:50,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2024-10-12 16:18:50,628 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:50,628 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-12 16:18:50,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 16:18:50,629 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:50,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:50,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1451326036, now seen corresponding path program 1 times [2024-10-12 16:18:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:50,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218991592] [2024-10-12 16:18:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:50,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-12 16:18:51,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:51,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218991592] [2024-10-12 16:18:51,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218991592] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:51,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:51,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:51,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395101806] [2024-10-12 16:18:51,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:51,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:51,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:51,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:51,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:51,061 INFO L87 Difference]: Start difference. First operand 15031 states and 15976 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:52,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:52,337 INFO L93 Difference]: Finished difference Result 33970 states and 36125 transitions. [2024-10-12 16:18:52,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:18:52,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 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 660 [2024-10-12 16:18:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:52,357 INFO L225 Difference]: With dead ends: 33970 [2024-10-12 16:18:52,357 INFO L226 Difference]: Without dead ends: 19239 [2024-10-12 16:18:52,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:52,373 INFO L432 NwaCegarLoop]: 527 mSDtfsCounter, 237 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:52,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 564 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-12 16:18:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19239 states. [2024-10-12 16:18:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19239 to 18331. [2024-10-12 16:18:52,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18331 states, 18330 states have (on average 1.0588652482269503) internal successors, (19409), 18330 states have internal predecessors, (19409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:52,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18331 states to 18331 states and 19409 transitions. [2024-10-12 16:18:52,630 INFO L78 Accepts]: Start accepts. Automaton has 18331 states and 19409 transitions. Word has length 660 [2024-10-12 16:18:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:52,630 INFO L471 AbstractCegarLoop]: Abstraction has 18331 states and 19409 transitions. [2024-10-12 16:18:52,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:52,630 INFO L276 IsEmpty]: Start isEmpty. Operand 18331 states and 19409 transitions. [2024-10-12 16:18:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2024-10-12 16:18:52,643 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:52,644 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:52,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 16:18:52,644 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:52,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:52,645 INFO L85 PathProgramCache]: Analyzing trace with hash -882247538, now seen corresponding path program 1 times [2024-10-12 16:18:52,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:52,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514144709] [2024-10-12 16:18:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:52,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:53,665 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2024-10-12 16:18:53,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:53,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514144709] [2024-10-12 16:18:53,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514144709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:53,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:53,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:18:53,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598022914] [2024-10-12 16:18:53,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:53,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:18:53,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:53,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:18:53,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:18:53,668 INFO L87 Difference]: Start difference. First operand 18331 states and 19409 transitions. Second operand has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:55,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:55,151 INFO L93 Difference]: Finished difference Result 45353 states and 47880 transitions. [2024-10-12 16:18:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:18:55,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 696 [2024-10-12 16:18:55,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:55,175 INFO L225 Difference]: With dead ends: 45353 [2024-10-12 16:18:55,175 INFO L226 Difference]: Without dead ends: 26724 [2024-10-12 16:18:55,190 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 [2024-10-12 16:18:55,191 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 552 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:55,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 117 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:18:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26724 states. [2024-10-12 16:18:55,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26724 to 18331. [2024-10-12 16:18:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18331 states, 18330 states have (on average 1.0588652482269503) internal successors, (19409), 18330 states have internal predecessors, (19409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18331 states to 18331 states and 19409 transitions. [2024-10-12 16:18:55,438 INFO L78 Accepts]: Start accepts. Automaton has 18331 states and 19409 transitions. Word has length 696 [2024-10-12 16:18:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:55,438 INFO L471 AbstractCegarLoop]: Abstraction has 18331 states and 19409 transitions. [2024-10-12 16:18:55,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:55,438 INFO L276 IsEmpty]: Start isEmpty. Operand 18331 states and 19409 transitions. [2024-10-12 16:18:55,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2024-10-12 16:18:55,447 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:55,447 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-10-12 16:18:55,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 16:18:55,448 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:55,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:55,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1833770987, now seen corresponding path program 1 times [2024-10-12 16:18:55,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:55,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123549266] [2024-10-12 16:18:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:55,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 563 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-12 16:18:56,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:56,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123549266] [2024-10-12 16:18:56,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123549266] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:56,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:56,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:18:56,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724542295] [2024-10-12 16:18:56,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:56,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:18:56,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:56,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:18:56,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:18:56,174 INFO L87 Difference]: Start difference. First operand 18331 states and 19409 transitions. Second operand has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:58,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:18:58,561 INFO L93 Difference]: Finished difference Result 46845 states and 49410 transitions. [2024-10-12 16:18:58,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:18:58,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 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 716 [2024-10-12 16:18:58,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:18:58,587 INFO L225 Difference]: With dead ends: 46845 [2024-10-12 16:18:58,587 INFO L226 Difference]: Without dead ends: 28216 [2024-10-12 16:18:58,600 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 [2024-10-12 16:18:58,600 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 547 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:18:58,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 111 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-12 16:18:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28216 states. [2024-10-12 16:18:58,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28216 to 23422. [2024-10-12 16:18:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23422 states, 23421 states have (on average 1.0555484394346955) internal successors, (24722), 23421 states have internal predecessors, (24722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:58,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23422 states to 23422 states and 24722 transitions. [2024-10-12 16:18:58,801 INFO L78 Accepts]: Start accepts. Automaton has 23422 states and 24722 transitions. Word has length 716 [2024-10-12 16:18:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:18:58,802 INFO L471 AbstractCegarLoop]: Abstraction has 23422 states and 24722 transitions. [2024-10-12 16:18:58,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:18:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 23422 states and 24722 transitions. [2024-10-12 16:18:58,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2024-10-12 16:18:58,813 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:18:58,813 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:18:58,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 16:18:58,814 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:18:58,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:18:58,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1694354697, now seen corresponding path program 1 times [2024-10-12 16:18:58,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:18:58,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586975778] [2024-10-12 16:18:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:18:58,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:18:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:18:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 559 proven. 0 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-10-12 16:18:59,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:18:59,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586975778] [2024-10-12 16:18:59,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586975778] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:18:59,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:18:59,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:18:59,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938016549] [2024-10-12 16:18:59,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:18:59,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:18:59,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:18:59,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:18:59,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:18:59,773 INFO L87 Difference]: Start difference. First operand 23422 states and 24722 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:00,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:19:00,744 INFO L93 Difference]: Finished difference Result 46848 states and 49452 transitions. [2024-10-12 16:19:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:19:00,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 791 [2024-10-12 16:19:00,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:19:00,766 INFO L225 Difference]: With dead ends: 46848 [2024-10-12 16:19:00,767 INFO L226 Difference]: Without dead ends: 23726 [2024-10-12 16:19:00,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:00,781 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 293 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:19:00,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 120 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:19:00,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23726 states. [2024-10-12 16:19:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23726 to 23422. [2024-10-12 16:19:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23422 states, 23421 states have (on average 1.051193373468255) internal successors, (24620), 23421 states have internal predecessors, (24620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:00,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23422 states to 23422 states and 24620 transitions. [2024-10-12 16:19:00,983 INFO L78 Accepts]: Start accepts. Automaton has 23422 states and 24620 transitions. Word has length 791 [2024-10-12 16:19:00,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:19:00,984 INFO L471 AbstractCegarLoop]: Abstraction has 23422 states and 24620 transitions. [2024-10-12 16:19:00,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:00,984 INFO L276 IsEmpty]: Start isEmpty. Operand 23422 states and 24620 transitions. [2024-10-12 16:19:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2024-10-12 16:19:01,000 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:19:01,000 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:19:01,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 16:19:01,001 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:19:01,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:19:01,001 INFO L85 PathProgramCache]: Analyzing trace with hash 141135099, now seen corresponding path program 1 times [2024-10-12 16:19:01,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:19:01,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743858011] [2024-10-12 16:19:01,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:01,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:19:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 712 proven. 0 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2024-10-12 16:19:01,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:19:01,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743858011] [2024-10-12 16:19:01,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743858011] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:19:01,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:19:01,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:19:01,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894880588] [2024-10-12 16:19:01,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:19:01,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:19:01,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:19:01,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:19:01,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:01,454 INFO L87 Difference]: Start difference. First operand 23422 states and 24620 transitions. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:02,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:19:02,528 INFO L93 Difference]: Finished difference Result 50422 states and 52941 transitions. [2024-10-12 16:19:02,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:19:02,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 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 815 [2024-10-12 16:19:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:19:02,552 INFO L225 Difference]: With dead ends: 50422 [2024-10-12 16:19:02,552 INFO L226 Difference]: Without dead ends: 24908 [2024-10-12 16:19:02,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:02,568 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 145 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:19:02,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 471 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:19:02,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24908 states. [2024-10-12 16:19:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24908 to 23413. [2024-10-12 16:19:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23413 states, 23412 states have (on average 1.04267042542286) internal successors, (24411), 23412 states have internal predecessors, (24411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23413 states to 23413 states and 24411 transitions. [2024-10-12 16:19:02,770 INFO L78 Accepts]: Start accepts. Automaton has 23413 states and 24411 transitions. Word has length 815 [2024-10-12 16:19:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:19:02,770 INFO L471 AbstractCegarLoop]: Abstraction has 23413 states and 24411 transitions. [2024-10-12 16:19:02,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:02,771 INFO L276 IsEmpty]: Start isEmpty. Operand 23413 states and 24411 transitions. [2024-10-12 16:19:02,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2024-10-12 16:19:02,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:19:02,780 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:19:02,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-12 16:19:02,781 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:19:02,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:19:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1998903395, now seen corresponding path program 1 times [2024-10-12 16:19:02,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:19:02,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667026058] [2024-10-12 16:19:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:19:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1325 backedges. 691 proven. 0 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2024-10-12 16:19:03,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:19:03,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667026058] [2024-10-12 16:19:03,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667026058] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:19:03,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:19:03,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:19:03,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244547013] [2024-10-12 16:19:03,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:19:03,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:19:03,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:19:03,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:19:03,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:19:03,619 INFO L87 Difference]: Start difference. First operand 23413 states and 24411 transitions. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:05,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:19:05,095 INFO L93 Difference]: Finished difference Result 53718 states and 55931 transitions. [2024-10-12 16:19:05,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:19:05,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 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 819 [2024-10-12 16:19:05,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:19:05,122 INFO L225 Difference]: With dead ends: 53718 [2024-10-12 16:19:05,123 INFO L226 Difference]: Without dead ends: 30007 [2024-10-12 16:19:05,138 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 [2024-10-12 16:19:05,139 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 535 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-12 16:19:05,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 120 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-12 16:19:05,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30007 states. [2024-10-12 16:19:05,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30007 to 22815. [2024-10-12 16:19:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22815 states, 22814 states have (on average 1.0432629087402472) internal successors, (23801), 22814 states have internal predecessors, (23801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:05,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22815 states to 22815 states and 23801 transitions. [2024-10-12 16:19:05,367 INFO L78 Accepts]: Start accepts. Automaton has 22815 states and 23801 transitions. Word has length 819 [2024-10-12 16:19:05,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:19:05,368 INFO L471 AbstractCegarLoop]: Abstraction has 22815 states and 23801 transitions. [2024-10-12 16:19:05,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:05,368 INFO L276 IsEmpty]: Start isEmpty. Operand 22815 states and 23801 transitions. [2024-10-12 16:19:05,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2024-10-12 16:19:05,428 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:19:05,428 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:19:05,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 16:19:05,428 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:19:05,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:19:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash -186902491, now seen corresponding path program 1 times [2024-10-12 16:19:05,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:19:05,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612515066] [2024-10-12 16:19:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:19:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:05,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 753 proven. 0 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2024-10-12 16:19:05,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:19:05,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612515066] [2024-10-12 16:19:05,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612515066] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:19:05,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:19:05,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:19:05,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999977923] [2024-10-12 16:19:05,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:19:05,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:19:05,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:19:05,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:19:05,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:05,981 INFO L87 Difference]: Start difference. First operand 22815 states and 23801 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:19:07,013 INFO L93 Difference]: Finished difference Result 51336 states and 53684 transitions. [2024-10-12 16:19:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:19:07,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 858 [2024-10-12 16:19:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:19:07,044 INFO L225 Difference]: With dead ends: 51336 [2024-10-12 16:19:07,044 INFO L226 Difference]: Without dead ends: 28821 [2024-10-12 16:19:07,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:07,059 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 135 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:19:07,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 234 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:19:07,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28821 states. [2024-10-12 16:19:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28821 to 27012. [2024-10-12 16:19:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27012 states, 27011 states have (on average 1.0435748398800488) internal successors, (28188), 27011 states have internal predecessors, (28188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27012 states to 27012 states and 28188 transitions. [2024-10-12 16:19:07,439 INFO L78 Accepts]: Start accepts. Automaton has 27012 states and 28188 transitions. Word has length 858 [2024-10-12 16:19:07,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:19:07,440 INFO L471 AbstractCegarLoop]: Abstraction has 27012 states and 28188 transitions. [2024-10-12 16:19:07,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:07,440 INFO L276 IsEmpty]: Start isEmpty. Operand 27012 states and 28188 transitions. [2024-10-12 16:19:07,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2024-10-12 16:19:07,462 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:19:07,462 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:19:07,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-12 16:19:07,463 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:19:07,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:19:07,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1712486882, now seen corresponding path program 1 times [2024-10-12 16:19:07,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:19:07,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317975194] [2024-10-12 16:19:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:07,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:19:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 752 proven. 0 refuted. 0 times theorem prover too weak. 1212 trivial. 0 not checked. [2024-10-12 16:19:08,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:19:08,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317975194] [2024-10-12 16:19:08,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317975194] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:19:08,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:19:08,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 16:19:08,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257377632] [2024-10-12 16:19:08,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:19:08,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:19:08,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:19:08,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:19:08,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 16:19:08,297 INFO L87 Difference]: Start difference. First operand 27012 states and 28188 transitions. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:09,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:19:09,861 INFO L93 Difference]: Finished difference Result 64207 states and 66846 transitions. [2024-10-12 16:19:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 16:19:09,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 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 992 [2024-10-12 16:19:09,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:19:09,896 INFO L225 Difference]: With dead ends: 64207 [2024-10-12 16:19:09,896 INFO L226 Difference]: Without dead ends: 37196 [2024-10-12 16:19:09,914 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 [2024-10-12 16:19:09,914 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 574 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-12 16:19:09,915 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 113 Invalid, 1792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-12 16:19:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37196 states. [2024-10-12 16:19:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37196 to 29705. [2024-10-12 16:19:10,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29705 states, 29704 states have (on average 1.0421828709938055) internal successors, (30957), 29704 states have internal predecessors, (30957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29705 states to 29705 states and 30957 transitions. [2024-10-12 16:19:10,287 INFO L78 Accepts]: Start accepts. Automaton has 29705 states and 30957 transitions. Word has length 992 [2024-10-12 16:19:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:19:10,288 INFO L471 AbstractCegarLoop]: Abstraction has 29705 states and 30957 transitions. [2024-10-12 16:19:10,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:10,288 INFO L276 IsEmpty]: Start isEmpty. Operand 29705 states and 30957 transitions. [2024-10-12 16:19:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2024-10-12 16:19:10,306 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:19:10,306 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:19:10,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 16:19:10,306 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:19:10,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:19:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash 473510407, now seen corresponding path program 1 times [2024-10-12 16:19:10,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:19:10,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641723497] [2024-10-12 16:19:10,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:10,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:19:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 1370 proven. 0 refuted. 0 times theorem prover too weak. 619 trivial. 0 not checked. [2024-10-12 16:19:10,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:19:10,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641723497] [2024-10-12 16:19:10,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641723497] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:19:10,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:19:10,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:19:10,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269859209] [2024-10-12 16:19:10,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:19:10,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:19:10,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:19:10,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:19:10,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:10,648 INFO L87 Difference]: Start difference. First operand 29705 states and 30957 transitions. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:11,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:19:11,606 INFO L93 Difference]: Finished difference Result 61501 states and 64079 transitions. [2024-10-12 16:19:11,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:19:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 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 1029 [2024-10-12 16:19:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:19:11,636 INFO L225 Difference]: With dead ends: 61501 [2024-10-12 16:19:11,636 INFO L226 Difference]: Without dead ends: 32096 [2024-10-12 16:19:11,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:11,655 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 95 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:19:11,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 123 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:19:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32096 states. [2024-10-12 16:19:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32096 to 27910. [2024-10-12 16:19:11,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27910 states, 27909 states have (on average 1.0403812390268372) internal successors, (29036), 27909 states have internal predecessors, (29036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27910 states to 27910 states and 29036 transitions. [2024-10-12 16:19:11,897 INFO L78 Accepts]: Start accepts. Automaton has 27910 states and 29036 transitions. Word has length 1029 [2024-10-12 16:19:11,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:19:11,898 INFO L471 AbstractCegarLoop]: Abstraction has 27910 states and 29036 transitions. [2024-10-12 16:19:11,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:11,898 INFO L276 IsEmpty]: Start isEmpty. Operand 27910 states and 29036 transitions. [2024-10-12 16:19:11,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2024-10-12 16:19:11,914 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:19:11,915 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:19:11,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 16:19:11,915 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:19:11,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:19:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1843006611, now seen corresponding path program 1 times [2024-10-12 16:19:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:19:11,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329640956] [2024-10-12 16:19:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:11,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:19:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 655 proven. 707 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-10-12 16:19:13,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:19:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329640956] [2024-10-12 16:19:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329640956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:19:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100479438] [2024-10-12 16:19:13,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:13,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:19:13,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:19:13,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:19:13,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 16:19:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:13,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 16:19:14,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:19:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1717 backedges. 1093 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2024-10-12 16:19:14,549 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:19:14,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100479438] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:19:14,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:19:14,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-12 16:19:14,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127214417] [2024-10-12 16:19:14,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:19:14,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:19:14,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:19:14,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:19:14,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:19:14,553 INFO L87 Difference]: Start difference. First operand 27910 states and 29036 transitions. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:15,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:19:15,457 INFO L93 Difference]: Finished difference Result 55518 states and 57768 transitions. [2024-10-12 16:19:15,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:19:15,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 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 1030 [2024-10-12 16:19:15,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:19:15,482 INFO L225 Difference]: With dead ends: 55518 [2024-10-12 16:19:15,482 INFO L226 Difference]: Without dead ends: 27908 [2024-10-12 16:19:15,497 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 1030 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 16:19:15,497 INFO L432 NwaCegarLoop]: 473 mSDtfsCounter, 130 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:19:15,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 504 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:19:15,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27908 states. [2024-10-12 16:19:15,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27908 to 27608. [2024-10-12 16:19:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27608 states, 27607 states have (on average 1.0281088129822147) internal successors, (28383), 27607 states have internal predecessors, (28383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27608 states to 27608 states and 28383 transitions. [2024-10-12 16:19:15,900 INFO L78 Accepts]: Start accepts. Automaton has 27608 states and 28383 transitions. Word has length 1030 [2024-10-12 16:19:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:19:15,902 INFO L471 AbstractCegarLoop]: Abstraction has 27608 states and 28383 transitions. [2024-10-12 16:19:15,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 27608 states and 28383 transitions. [2024-10-12 16:19:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2024-10-12 16:19:15,921 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:19:15,922 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-12 16:19:15,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 16:19:16,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-12 16:19:16,127 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:19:16,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:19:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2081865179, now seen corresponding path program 1 times [2024-10-12 16:19:16,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:19:16,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872630628] [2024-10-12 16:19:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:16,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:19:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1802 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 692 trivial. 0 not checked. [2024-10-12 16:19:16,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:19:16,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872630628] [2024-10-12 16:19:16,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872630628] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:19:16,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:19:16,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:19:16,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720965242] [2024-10-12 16:19:16,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:19:16,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:19:16,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:19:16,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:19:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:16,866 INFO L87 Difference]: Start difference. First operand 27608 states and 28383 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:19:17,727 INFO L93 Difference]: Finished difference Result 55812 states and 57384 transitions. [2024-10-12 16:19:17,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:19:17,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 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 1059 [2024-10-12 16:19:17,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:19:17,753 INFO L225 Difference]: With dead ends: 55812 [2024-10-12 16:19:17,753 INFO L226 Difference]: Without dead ends: 28504 [2024-10-12 16:19:17,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:17,770 INFO L432 NwaCegarLoop]: 479 mSDtfsCounter, 311 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 16:19:17,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 517 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 16:19:17,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28504 states. [2024-10-12 16:19:17,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28504 to 27607. [2024-10-12 16:19:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27607 states, 27606 states have (on average 1.0280736071868435) internal successors, (28381), 27606 states have internal predecessors, (28381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27607 states to 27607 states and 28381 transitions. [2024-10-12 16:19:18,029 INFO L78 Accepts]: Start accepts. Automaton has 27607 states and 28381 transitions. Word has length 1059 [2024-10-12 16:19:18,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:19:18,030 INFO L471 AbstractCegarLoop]: Abstraction has 27607 states and 28381 transitions. [2024-10-12 16:19:18,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:18,030 INFO L276 IsEmpty]: Start isEmpty. Operand 27607 states and 28381 transitions. [2024-10-12 16:19:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1075 [2024-10-12 16:19:18,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:19:18,043 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:19:18,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-10-12 16:19:18,044 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:19:18,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:19:18,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1150948138, now seen corresponding path program 1 times [2024-10-12 16:19:18,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:19:18,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217871504] [2024-10-12 16:19:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:18,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:19:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:18,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2014 backedges. 1329 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2024-10-12 16:19:18,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:19:18,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217871504] [2024-10-12 16:19:18,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217871504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:19:18,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:19:18,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:19:18,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115531574] [2024-10-12 16:19:18,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:19:18,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:19:18,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:19:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:19:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:18,998 INFO L87 Difference]: Start difference. First operand 27607 states and 28381 transitions. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:19:19,972 INFO L93 Difference]: Finished difference Result 63014 states and 64794 transitions. [2024-10-12 16:19:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:19:19,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 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 1074 [2024-10-12 16:19:19,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:19:20,006 INFO L225 Difference]: With dead ends: 63014 [2024-10-12 16:19:20,006 INFO L226 Difference]: Without dead ends: 35707 [2024-10-12 16:19:20,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:20,027 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 238 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-12 16:19:20,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 491 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-12 16:19:20,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35707 states. [2024-10-12 16:19:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35707 to 31797. [2024-10-12 16:19:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31797 states, 31796 states have (on average 1.027739338281545) internal successors, (32678), 31796 states have internal predecessors, (32678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31797 states to 31797 states and 32678 transitions. [2024-10-12 16:19:20,319 INFO L78 Accepts]: Start accepts. Automaton has 31797 states and 32678 transitions. Word has length 1074 [2024-10-12 16:19:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:19:20,320 INFO L471 AbstractCegarLoop]: Abstraction has 31797 states and 32678 transitions. [2024-10-12 16:19:20,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 31797 states and 32678 transitions. [2024-10-12 16:19:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2024-10-12 16:19:20,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:19:20,334 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:19:20,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-10-12 16:19:20,334 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:19:20,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:19:20,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2053196951, now seen corresponding path program 1 times [2024-10-12 16:19:20,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:19:20,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778976099] [2024-10-12 16:19:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:20,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:19:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2189 backedges. 1177 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-12 16:19:21,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:19:21,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778976099] [2024-10-12 16:19:21,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778976099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:19:21,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 16:19:21,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 16:19:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498168550] [2024-10-12 16:19:21,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:19:21,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 16:19:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:19:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 16:19:21,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:21,120 INFO L87 Difference]: Start difference. First operand 31797 states and 32678 transitions. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:22,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 16:19:22,139 INFO L93 Difference]: Finished difference Result 68998 states and 70900 transitions. [2024-10-12 16:19:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 16:19:22,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 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 1116 [2024-10-12 16:19:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 16:19:22,173 INFO L225 Difference]: With dead ends: 68998 [2024-10-12 16:19:22,174 INFO L226 Difference]: Without dead ends: 37501 [2024-10-12 16:19:22,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 16:19:22,193 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 256 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-12 16:19:22,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 163 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-12 16:19:22,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37501 states. [2024-10-12 16:19:22,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37501 to 33898. [2024-10-12 16:19:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33898 states, 33897 states have (on average 1.0266100244859426) internal successors, (34799), 33897 states have internal predecessors, (34799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33898 states to 33898 states and 34799 transitions. [2024-10-12 16:19:22,494 INFO L78 Accepts]: Start accepts. Automaton has 33898 states and 34799 transitions. Word has length 1116 [2024-10-12 16:19:22,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 16:19:22,495 INFO L471 AbstractCegarLoop]: Abstraction has 33898 states and 34799 transitions. [2024-10-12 16:19:22,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 16:19:22,495 INFO L276 IsEmpty]: Start isEmpty. Operand 33898 states and 34799 transitions. [2024-10-12 16:19:22,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2024-10-12 16:19:22,508 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 16:19:22,509 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 16:19:22,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-10-12 16:19:22,509 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 16:19:22,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 16:19:22,510 INFO L85 PathProgramCache]: Analyzing trace with hash 903968333, now seen corresponding path program 1 times [2024-10-12 16:19:22,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 16:19:22,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419097550] [2024-10-12 16:19:22,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:22,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 16:19:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 1147 proven. 269 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-10-12 16:19:23,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 16:19:23,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419097550] [2024-10-12 16:19:23,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419097550] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 16:19:23,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714158809] [2024-10-12 16:19:23,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 16:19:23,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 16:19:23,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 16:19:23,997 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 16:19:23,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 16:19:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 16:19:24,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 16:19:24,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 16:19:25,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 1017 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2024-10-12 16:19:25,250 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 16:19:25,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714158809] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 16:19:25,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 16:19:25,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-10-12 16:19:25,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353757764] [2024-10-12 16:19:25,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 16:19:25,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 16:19:25,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 16:19:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 16:19:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 16:19:25,253 INFO L87 Difference]: Start difference. First operand 33898 states and 34799 transitions. Second operand has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)