./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/Problem11_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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/Problem11_label54.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 edb6f856db72a43ad08c83ff0e1ee56d288f58300ccdf5a7b1b400a926b63cbe --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 18:04:07,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 18:04:07,795 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 18:04:07,802 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 18:04:07,803 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 18:04:07,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 18:04:07,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 18:04:07,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 18:04:07,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 18:04:07,848 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 18:04:07,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 18:04:07,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 18:04:07,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 18:04:07,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 18:04:07,859 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 18:04:07,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 18:04:07,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 18:04:07,860 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 18:04:07,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 18:04:07,860 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 18:04:07,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 18:04:07,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 18:04:07,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 18:04:07,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 18:04:07,861 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 18:04:07,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 18:04:07,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 18:04:07,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 18:04:07,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 18:04:07,862 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 18:04:07,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 18:04:07,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 18:04:07,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:04:07,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 18:04:07,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 18:04:07,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 18:04:07,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 18:04:07,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 18:04:07,868 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 18:04:07,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 18:04:07,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 18:04:07,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 18:04:07,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edb6f856db72a43ad08c83ff0e1ee56d288f58300ccdf5a7b1b400a926b63cbe [2024-11-19 18:04:08,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 18:04:08,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 18:04:08,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 18:04:08,165 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 18:04:08,165 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 18:04:08,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label54.c [2024-11-19 18:04:09,435 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 18:04:09,690 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 18:04:09,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem11_label54.c [2024-11-19 18:04:09,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072784a19/dfa98ec9d5784ce5ac5e130d0fd0d9cf/FLAG32799df62 [2024-11-19 18:04:09,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/072784a19/dfa98ec9d5784ce5ac5e130d0fd0d9cf [2024-11-19 18:04:09,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 18:04:09,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 18:04:09,721 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 18:04:09,721 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 18:04:09,726 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 18:04:09,727 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:04:09" (1/1) ... [2024-11-19 18:04:09,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60481ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:09, skipping insertion in model container [2024-11-19 18:04:09,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:04:09" (1/1) ... [2024-11-19 18:04:09,783 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 18:04:09,963 WARN L250 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/Problem11_label54.c[5423,5436] [2024-11-19 18:04:10,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:04:10,125 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 18:04:10,140 WARN L250 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/Problem11_label54.c[5423,5436] [2024-11-19 18:04:10,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 18:04:10,238 INFO L204 MainTranslator]: Completed translation [2024-11-19 18:04:10,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10 WrapperNode [2024-11-19 18:04:10,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 18:04:10,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 18:04:10,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 18:04:10,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 18:04:10,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,356 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2024-11-19 18:04:10,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 18:04:10,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 18:04:10,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 18:04:10,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 18:04:10,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,390 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,486 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]. [2024-11-19 18:04:10,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,509 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,515 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,543 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 18:04:10,544 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 18:04:10,544 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 18:04:10,544 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 18:04:10,545 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (1/1) ... [2024-11-19 18:04:10,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 18:04:10,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:10,572 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) [2024-11-19 18:04:10,616 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 [2024-11-19 18:04:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 18:04:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 18:04:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 18:04:10,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 18:04:10,704 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 18:04:10,706 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 18:04:11,814 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-19 18:04:11,814 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 18:04:11,835 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 18:04:11,835 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 18:04:11,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:04:11 BoogieIcfgContainer [2024-11-19 18:04:11,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 18:04:11,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 18:04:11,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 18:04:11,840 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 18:04:11,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:04:09" (1/3) ... [2024-11-19 18:04:11,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6513372a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:04:11, skipping insertion in model container [2024-11-19 18:04:11,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:04:10" (2/3) ... [2024-11-19 18:04:11,841 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6513372a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:04:11, skipping insertion in model container [2024-11-19 18:04:11,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:04:11" (3/3) ... [2024-11-19 18:04:11,842 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label54.c [2024-11-19 18:04:11,853 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 18:04:11,854 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 18:04:11,905 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 18:04:11,938 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;@1213f16c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 18:04:11,939 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 18:04:11,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 18:04:11,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:11,949 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] [2024-11-19 18:04:11,949 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:11,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:11,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2088660649, now seen corresponding path program 1 times [2024-11-19 18:04:11,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:11,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325389469] [2024-11-19 18:04:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:11,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:12,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325389469] [2024-11-19 18:04:12,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325389469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:12,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:12,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:04:12,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310828142] [2024-11-19 18:04:12,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:12,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:12,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:12,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:12,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:12,271 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 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 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:13,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:13,256 INFO L93 Difference]: Finished difference Result 763 states and 1352 transitions. [2024-11-19 18:04:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:13,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-19 18:04:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:13,267 INFO L225 Difference]: With dead ends: 763 [2024-11-19 18:04:13,268 INFO L226 Difference]: Without dead ends: 416 [2024-11-19 18:04:13,271 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 [2024-11-19 18:04:13,274 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 236 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:13,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 89 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:04:13,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-11-19 18:04:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 408. [2024-11-19 18:04:13,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.6142506142506143) internal successors, (657), 407 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) [2024-11-19 18:04:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 657 transitions. [2024-11-19 18:04:13,327 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 657 transitions. Word has length 37 [2024-11-19 18:04:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:13,327 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 657 transitions. [2024-11-19 18:04:13,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 657 transitions. [2024-11-19 18:04:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-19 18:04:13,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:13,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:13,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 18:04:13,331 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:13,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1296179654, now seen corresponding path program 1 times [2024-11-19 18:04:13,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:13,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078393550] [2024-11-19 18:04:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:13,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:13,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078393550] [2024-11-19 18:04:13,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078393550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:13,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:13,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:04:13,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644916531] [2024-11-19 18:04:13,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:13,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:13,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:13,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:13,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:13,611 INFO L87 Difference]: Start difference. First operand 408 states and 657 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:14,432 INFO L93 Difference]: Finished difference Result 1191 states and 1930 transitions. [2024-11-19 18:04:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:14,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2024-11-19 18:04:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:14,436 INFO L225 Difference]: With dead ends: 1191 [2024-11-19 18:04:14,436 INFO L226 Difference]: Without dead ends: 785 [2024-11-19 18:04:14,438 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 [2024-11-19 18:04:14,439 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 141 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:14,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 152 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 18:04:14,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2024-11-19 18:04:14,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 783. [2024-11-19 18:04:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 782 states have (on average 1.438618925831202) internal successors, (1125), 782 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:14,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1125 transitions. [2024-11-19 18:04:14,476 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1125 transitions. Word has length 102 [2024-11-19 18:04:14,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:14,477 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1125 transitions. [2024-11-19 18:04:14,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:14,477 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1125 transitions. [2024-11-19 18:04:14,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-19 18:04:14,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:14,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:14,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 18:04:14,483 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:14,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1017074320, now seen corresponding path program 1 times [2024-11-19 18:04:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:14,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806353764] [2024-11-19 18:04:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:14,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:14,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806353764] [2024-11-19 18:04:14,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806353764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:14,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:14,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:04:14,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546151129] [2024-11-19 18:04:14,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:14,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:14,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:14,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:14,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:14,598 INFO L87 Difference]: Start difference. First operand 783 states and 1125 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:15,378 INFO L93 Difference]: Finished difference Result 1948 states and 2801 transitions. [2024-11-19 18:04:15,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:15,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2024-11-19 18:04:15,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:15,383 INFO L225 Difference]: With dead ends: 1948 [2024-11-19 18:04:15,383 INFO L226 Difference]: Without dead ends: 1167 [2024-11-19 18:04:15,385 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 [2024-11-19 18:04:15,386 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 144 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:15,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 116 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:04:15,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2024-11-19 18:04:15,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1154. [2024-11-19 18:04:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 1.3391153512575888) internal successors, (1544), 1153 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1544 transitions. [2024-11-19 18:04:15,441 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1544 transitions. Word has length 105 [2024-11-19 18:04:15,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:15,442 INFO L471 AbstractCegarLoop]: Abstraction has 1154 states and 1544 transitions. [2024-11-19 18:04:15,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1544 transitions. [2024-11-19 18:04:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-19 18:04:15,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:15,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:15,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 18:04:15,446 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:15,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:15,451 INFO L85 PathProgramCache]: Analyzing trace with hash -166569456, now seen corresponding path program 1 times [2024-11-19 18:04:15,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:15,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058126465] [2024-11-19 18:04:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:15,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:15,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:15,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:15,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058126465] [2024-11-19 18:04:15,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058126465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:15,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:15,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:04:15,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543619455] [2024-11-19 18:04:15,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:15,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:15,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:15,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:15,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:15,878 INFO L87 Difference]: Start difference. First operand 1154 states and 1544 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:16,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:16,584 INFO L93 Difference]: Finished difference Result 2676 states and 3529 transitions. [2024-11-19 18:04:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:16,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2024-11-19 18:04:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:16,590 INFO L225 Difference]: With dead ends: 2676 [2024-11-19 18:04:16,590 INFO L226 Difference]: Without dead ends: 1524 [2024-11-19 18:04:16,592 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 [2024-11-19 18:04:16,593 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:16,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 189 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:04:16,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2024-11-19 18:04:16,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1523. [2024-11-19 18:04:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1522 states have (on average 1.268725361366623) internal successors, (1931), 1522 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:16,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 1931 transitions. [2024-11-19 18:04:16,613 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 1931 transitions. Word has length 106 [2024-11-19 18:04:16,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:16,613 INFO L471 AbstractCegarLoop]: Abstraction has 1523 states and 1931 transitions. [2024-11-19 18:04:16,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:16,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 1931 transitions. [2024-11-19 18:04:16,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-19 18:04:16,615 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:16,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:16,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 18:04:16,615 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:16,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:16,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2070966061, now seen corresponding path program 1 times [2024-11-19 18:04:16,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:16,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449337378] [2024-11-19 18:04:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:16,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:16,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:16,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449337378] [2024-11-19 18:04:16,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449337378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:16,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:16,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:04:16,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207678013] [2024-11-19 18:04:16,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:16,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:16,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:16,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:16,710 INFO L87 Difference]: Start difference. First operand 1523 states and 1931 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:17,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:17,352 INFO L93 Difference]: Finished difference Result 3968 states and 5151 transitions. [2024-11-19 18:04:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:17,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2024-11-19 18:04:17,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:17,362 INFO L225 Difference]: With dead ends: 3968 [2024-11-19 18:04:17,362 INFO L226 Difference]: Without dead ends: 2631 [2024-11-19 18:04:17,364 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 [2024-11-19 18:04:17,365 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 115 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:17,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 154 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:17,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2024-11-19 18:04:17,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2447. [2024-11-19 18:04:17,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2446 states have (on average 1.2236304170073589) internal successors, (2993), 2446 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 2993 transitions. [2024-11-19 18:04:17,406 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 2993 transitions. Word has length 164 [2024-11-19 18:04:17,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:17,407 INFO L471 AbstractCegarLoop]: Abstraction has 2447 states and 2993 transitions. [2024-11-19 18:04:17,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:17,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 2993 transitions. [2024-11-19 18:04:17,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-19 18:04:17,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:17,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:17,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 18:04:17,411 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:17,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash -558806157, now seen corresponding path program 1 times [2024-11-19 18:04:17,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:17,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585665529] [2024-11-19 18:04:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:17,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:17,594 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-19 18:04:17,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:17,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585665529] [2024-11-19 18:04:17,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585665529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:17,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:17,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:04:17,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771518214] [2024-11-19 18:04:17,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:17,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:17,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:17,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:17,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:17,596 INFO L87 Difference]: Start difference. First operand 2447 states and 2993 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:18,148 INFO L93 Difference]: Finished difference Result 5266 states and 6463 transitions. [2024-11-19 18:04:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:18,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2024-11-19 18:04:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:18,158 INFO L225 Difference]: With dead ends: 5266 [2024-11-19 18:04:18,158 INFO L226 Difference]: Without dead ends: 3005 [2024-11-19 18:04:18,161 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 [2024-11-19 18:04:18,162 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 75 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:18,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 153 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:04:18,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2024-11-19 18:04:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2820. [2024-11-19 18:04:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2819 states have (on average 1.2220645619013835) internal successors, (3445), 2819 states have internal predecessors, (3445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 3445 transitions. [2024-11-19 18:04:18,201 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 3445 transitions. Word has length 180 [2024-11-19 18:04:18,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:18,202 INFO L471 AbstractCegarLoop]: Abstraction has 2820 states and 3445 transitions. [2024-11-19 18:04:18,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:18,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 3445 transitions. [2024-11-19 18:04:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-19 18:04:18,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:18,204 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:04:18,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 18:04:18,205 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:18,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1961217037, now seen corresponding path program 1 times [2024-11-19 18:04:18,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:18,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660836342] [2024-11-19 18:04:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:18,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:18,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:18,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660836342] [2024-11-19 18:04:18,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660836342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:18,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:18,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:18,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821860506] [2024-11-19 18:04:18,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:18,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:18,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:18,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:18,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:18,421 INFO L87 Difference]: Start difference. First operand 2820 states and 3445 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:19,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:19,110 INFO L93 Difference]: Finished difference Result 6567 states and 8101 transitions. [2024-11-19 18:04:19,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:19,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2024-11-19 18:04:19,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:19,124 INFO L225 Difference]: With dead ends: 6567 [2024-11-19 18:04:19,124 INFO L226 Difference]: Without dead ends: 3933 [2024-11-19 18:04:19,128 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 [2024-11-19 18:04:19,128 INFO L432 NwaCegarLoop]: 312 mSDtfsCounter, 135 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:19,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 332 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2024-11-19 18:04:19,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 3556. [2024-11-19 18:04:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3555 states have (on average 1.2115330520393812) internal successors, (4307), 3555 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:19,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 4307 transitions. [2024-11-19 18:04:19,180 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 4307 transitions. Word has length 217 [2024-11-19 18:04:19,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:19,181 INFO L471 AbstractCegarLoop]: Abstraction has 3556 states and 4307 transitions. [2024-11-19 18:04:19,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 4307 transitions. [2024-11-19 18:04:19,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-19 18:04:19,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:19,183 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:04:19,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 18:04:19,184 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:19,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash 629777389, now seen corresponding path program 1 times [2024-11-19 18:04:19,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:19,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541814910] [2024-11-19 18:04:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:19,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:19,446 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-19 18:04:19,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:19,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541814910] [2024-11-19 18:04:19,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541814910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:19,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:19,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:19,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174585030] [2024-11-19 18:04:19,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:19,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:19,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:19,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:19,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:19,449 INFO L87 Difference]: Start difference. First operand 3556 states and 4307 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:20,095 INFO L93 Difference]: Finished difference Result 9521 states and 11627 transitions. [2024-11-19 18:04:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:20,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 218 [2024-11-19 18:04:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:20,112 INFO L225 Difference]: With dead ends: 9521 [2024-11-19 18:04:20,112 INFO L226 Difference]: Without dead ends: 5967 [2024-11-19 18:04:20,116 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 [2024-11-19 18:04:20,117 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 189 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:20,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 332 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:20,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5967 states. [2024-11-19 18:04:20,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5967 to 5231. [2024-11-19 18:04:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5231 states, 5230 states have (on average 1.2061185468451243) internal successors, (6308), 5230 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5231 states to 5231 states and 6308 transitions. [2024-11-19 18:04:20,197 INFO L78 Accepts]: Start accepts. Automaton has 5231 states and 6308 transitions. Word has length 218 [2024-11-19 18:04:20,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:20,197 INFO L471 AbstractCegarLoop]: Abstraction has 5231 states and 6308 transitions. [2024-11-19 18:04:20,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5231 states and 6308 transitions. [2024-11-19 18:04:20,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-19 18:04:20,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:20,202 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:04:20,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 18:04:20,203 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:20,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:20,203 INFO L85 PathProgramCache]: Analyzing trace with hash 216235323, now seen corresponding path program 1 times [2024-11-19 18:04:20,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:20,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051269555] [2024-11-19 18:04:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:20,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 18:04:20,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:20,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051269555] [2024-11-19 18:04:20,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051269555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:20,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:20,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:20,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940310496] [2024-11-19 18:04:20,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:20,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:20,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:20,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:20,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:20,418 INFO L87 Difference]: Start difference. First operand 5231 states and 6308 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:21,038 INFO L93 Difference]: Finished difference Result 10457 states and 12611 transitions. [2024-11-19 18:04:21,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:21,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 255 [2024-11-19 18:04:21,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:21,049 INFO L225 Difference]: With dead ends: 10457 [2024-11-19 18:04:21,050 INFO L226 Difference]: Without dead ends: 5228 [2024-11-19 18:04:21,054 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 [2024-11-19 18:04:21,055 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 142 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:21,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 304 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2024-11-19 18:04:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 5228. [2024-11-19 18:04:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5227 states have (on average 1.178687583700019) internal successors, (6161), 5227 states have internal predecessors, (6161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 6161 transitions. [2024-11-19 18:04:21,113 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 6161 transitions. Word has length 255 [2024-11-19 18:04:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:21,113 INFO L471 AbstractCegarLoop]: Abstraction has 5228 states and 6161 transitions. [2024-11-19 18:04:21,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 6161 transitions. [2024-11-19 18:04:21,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-19 18:04:21,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:21,116 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:04:21,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 18:04:21,117 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:21,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:21,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2143692386, now seen corresponding path program 1 times [2024-11-19 18:04:21,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:21,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008591646] [2024-11-19 18:04:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:21,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-19 18:04:21,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:21,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008591646] [2024-11-19 18:04:21,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008591646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:21,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:21,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:21,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246534173] [2024-11-19 18:04:21,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:21,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:21,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:21,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:21,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:21,289 INFO L87 Difference]: Start difference. First operand 5228 states and 6161 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:21,804 INFO L93 Difference]: Finished difference Result 11195 states and 13196 transitions. [2024-11-19 18:04:21,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:21,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 269 [2024-11-19 18:04:21,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:21,816 INFO L225 Difference]: With dead ends: 11195 [2024-11-19 18:04:21,816 INFO L226 Difference]: Without dead ends: 5969 [2024-11-19 18:04:21,821 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 [2024-11-19 18:04:21,821 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 185 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:21,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 148 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:04:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5969 states. [2024-11-19 18:04:21,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5969 to 5228. [2024-11-19 18:04:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5227 states have (on average 1.178687583700019) internal successors, (6161), 5227 states have internal predecessors, (6161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 6161 transitions. [2024-11-19 18:04:21,903 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 6161 transitions. Word has length 269 [2024-11-19 18:04:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:21,903 INFO L471 AbstractCegarLoop]: Abstraction has 5228 states and 6161 transitions. [2024-11-19 18:04:21,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 6161 transitions. [2024-11-19 18:04:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-19 18:04:21,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:21,906 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-19 18:04:21,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 18:04:21,907 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:21,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1892161860, now seen corresponding path program 1 times [2024-11-19 18:04:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:21,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621637281] [2024-11-19 18:04:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-19 18:04:22,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621637281] [2024-11-19 18:04:22,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621637281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:22,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:22,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:22,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594249701] [2024-11-19 18:04:22,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:22,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:22,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:22,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:22,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:22,106 INFO L87 Difference]: Start difference. First operand 5228 states and 6161 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:22,749 INFO L93 Difference]: Finished difference Result 12849 states and 15240 transitions. [2024-11-19 18:04:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:22,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2024-11-19 18:04:22,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:22,759 INFO L225 Difference]: With dead ends: 12849 [2024-11-19 18:04:22,759 INFO L226 Difference]: Without dead ends: 7623 [2024-11-19 18:04:22,763 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 [2024-11-19 18:04:22,764 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 197 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:22,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 71 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:22,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7623 states. [2024-11-19 18:04:22,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7623 to 7252. [2024-11-19 18:04:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7252 states, 7251 states have (on average 1.1842504482140395) internal successors, (8587), 7251 states have internal predecessors, (8587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:22,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7252 states to 7252 states and 8587 transitions. [2024-11-19 18:04:22,873 INFO L78 Accepts]: Start accepts. Automaton has 7252 states and 8587 transitions. Word has length 272 [2024-11-19 18:04:22,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:22,874 INFO L471 AbstractCegarLoop]: Abstraction has 7252 states and 8587 transitions. [2024-11-19 18:04:22,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 7252 states and 8587 transitions. [2024-11-19 18:04:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-19 18:04:22,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:22,880 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:22,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 18:04:22,880 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:22,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:22,881 INFO L85 PathProgramCache]: Analyzing trace with hash -218760648, now seen corresponding path program 1 times [2024-11-19 18:04:22,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:22,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31313863] [2024-11-19 18:04:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:22,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-19 18:04:23,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:23,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31313863] [2024-11-19 18:04:23,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31313863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:23,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:23,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:23,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548961113] [2024-11-19 18:04:23,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:23,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:23,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:23,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:23,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:23,077 INFO L87 Difference]: Start difference. First operand 7252 states and 8587 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:23,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:23,644 INFO L93 Difference]: Finished difference Result 15789 states and 18676 transitions. [2024-11-19 18:04:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:23,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 310 [2024-11-19 18:04:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:23,655 INFO L225 Difference]: With dead ends: 15789 [2024-11-19 18:04:23,655 INFO L226 Difference]: Without dead ends: 8539 [2024-11-19 18:04:23,661 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 [2024-11-19 18:04:23,662 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 185 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:23,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 146 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:04:23,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8539 states. [2024-11-19 18:04:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8539 to 6143. [2024-11-19 18:04:23,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6143 states, 6142 states have (on average 1.1859329208726799) internal successors, (7284), 6142 states have internal predecessors, (7284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6143 states to 6143 states and 7284 transitions. [2024-11-19 18:04:23,724 INFO L78 Accepts]: Start accepts. Automaton has 6143 states and 7284 transitions. Word has length 310 [2024-11-19 18:04:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:23,725 INFO L471 AbstractCegarLoop]: Abstraction has 6143 states and 7284 transitions. [2024-11-19 18:04:23,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 6143 states and 7284 transitions. [2024-11-19 18:04:23,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2024-11-19 18:04:23,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:23,730 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:23,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 18:04:23,730 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:23,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:23,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1789936803, now seen corresponding path program 1 times [2024-11-19 18:04:23,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:23,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87761733] [2024-11-19 18:04:23,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:23,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-19 18:04:24,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:24,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87761733] [2024-11-19 18:04:24,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87761733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:24,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:24,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:24,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681938895] [2024-11-19 18:04:24,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:24,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:24,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:24,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:24,125 INFO L87 Difference]: Start difference. First operand 6143 states and 7284 transitions. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:24,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:24,802 INFO L93 Difference]: Finished difference Result 14510 states and 17070 transitions. [2024-11-19 18:04:24,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:24,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 320 [2024-11-19 18:04:24,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:24,812 INFO L225 Difference]: With dead ends: 14510 [2024-11-19 18:04:24,812 INFO L226 Difference]: Without dead ends: 8355 [2024-11-19 18:04:24,817 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 [2024-11-19 18:04:24,818 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 71 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:24,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 162 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:24,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8355 states. [2024-11-19 18:04:24,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8355 to 8170. [2024-11-19 18:04:24,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8170 states, 8169 states have (on average 1.1726037458685274) internal successors, (9579), 8169 states have internal predecessors, (9579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:24,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8170 states to 8170 states and 9579 transitions. [2024-11-19 18:04:24,880 INFO L78 Accepts]: Start accepts. Automaton has 8170 states and 9579 transitions. Word has length 320 [2024-11-19 18:04:24,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:24,880 INFO L471 AbstractCegarLoop]: Abstraction has 8170 states and 9579 transitions. [2024-11-19 18:04:24,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:24,881 INFO L276 IsEmpty]: Start isEmpty. Operand 8170 states and 9579 transitions. [2024-11-19 18:04:24,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2024-11-19 18:04:24,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:24,888 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:24,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 18:04:24,888 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:24,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:24,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1148105623, now seen corresponding path program 1 times [2024-11-19 18:04:24,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:24,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829928116] [2024-11-19 18:04:24,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:24,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-19 18:04:25,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:25,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829928116] [2024-11-19 18:04:25,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829928116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:25,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:25,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:04:25,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491211177] [2024-11-19 18:04:25,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:25,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:25,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:25,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:25,279 INFO L87 Difference]: Start difference. First operand 8170 states and 9579 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:26,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:26,447 INFO L93 Difference]: Finished difference Result 21877 states and 25680 transitions. [2024-11-19 18:04:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:26,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 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 394 [2024-11-19 18:04:26,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:26,471 INFO L225 Difference]: With dead ends: 21877 [2024-11-19 18:04:26,472 INFO L226 Difference]: Without dead ends: 14077 [2024-11-19 18:04:26,481 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 [2024-11-19 18:04:26,482 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 294 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:26,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 86 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:04:26,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14077 states. [2024-11-19 18:04:26,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14077 to 12973. [2024-11-19 18:04:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12973 states, 12972 states have (on average 1.1669750231267344) internal successors, (15138), 12972 states have internal predecessors, (15138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:26,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12973 states to 12973 states and 15138 transitions. [2024-11-19 18:04:26,661 INFO L78 Accepts]: Start accepts. Automaton has 12973 states and 15138 transitions. Word has length 394 [2024-11-19 18:04:26,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:26,661 INFO L471 AbstractCegarLoop]: Abstraction has 12973 states and 15138 transitions. [2024-11-19 18:04:26,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12973 states and 15138 transitions. [2024-11-19 18:04:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-19 18:04:26,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:26,677 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:26,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 18:04:26,677 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:26,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:26,678 INFO L85 PathProgramCache]: Analyzing trace with hash 917869103, now seen corresponding path program 1 times [2024-11-19 18:04:26,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:26,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325332019] [2024-11-19 18:04:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:26,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 18:04:26,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:26,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325332019] [2024-11-19 18:04:26,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325332019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:26,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:26,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:26,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115638060] [2024-11-19 18:04:26,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:26,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:26,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:26,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:26,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:26,953 INFO L87 Difference]: Start difference. First operand 12973 states and 15138 transitions. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:28,200 INFO L93 Difference]: Finished difference Result 32968 states and 38384 transitions. [2024-11-19 18:04:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:28,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 447 [2024-11-19 18:04:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:28,231 INFO L225 Difference]: With dead ends: 32968 [2024-11-19 18:04:28,231 INFO L226 Difference]: Without dead ends: 20365 [2024-11-19 18:04:28,243 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 [2024-11-19 18:04:28,243 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 238 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:28,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 76 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:04:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20365 states. [2024-11-19 18:04:28,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20365 to 17777. [2024-11-19 18:04:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17777 states, 17776 states have (on average 1.161284878487849) internal successors, (20643), 17776 states have internal predecessors, (20643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17777 states to 17777 states and 20643 transitions. [2024-11-19 18:04:28,453 INFO L78 Accepts]: Start accepts. Automaton has 17777 states and 20643 transitions. Word has length 447 [2024-11-19 18:04:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:28,454 INFO L471 AbstractCegarLoop]: Abstraction has 17777 states and 20643 transitions. [2024-11-19 18:04:28,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 17777 states and 20643 transitions. [2024-11-19 18:04:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-19 18:04:28,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:28,465 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:28,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 18:04:28,466 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:28,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:28,466 INFO L85 PathProgramCache]: Analyzing trace with hash -395850802, now seen corresponding path program 1 times [2024-11-19 18:04:28,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:28,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369897249] [2024-11-19 18:04:28,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:28,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-11-19 18:04:28,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:28,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369897249] [2024-11-19 18:04:28,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369897249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:28,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:28,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:28,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257989247] [2024-11-19 18:04:28,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:28,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:28,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:28,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:28,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:28,665 INFO L87 Difference]: Start difference. First operand 17777 states and 20643 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:29,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:29,390 INFO L93 Difference]: Finished difference Result 34442 states and 40071 transitions. [2024-11-19 18:04:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:29,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 514 [2024-11-19 18:04:29,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:29,405 INFO L225 Difference]: With dead ends: 34442 [2024-11-19 18:04:29,406 INFO L226 Difference]: Without dead ends: 17035 [2024-11-19 18:04:29,412 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 [2024-11-19 18:04:29,413 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 67 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:29,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 311 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:29,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17035 states. [2024-11-19 18:04:29,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17035 to 12601. [2024-11-19 18:04:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12601 states, 12600 states have (on average 1.1617460317460317) internal successors, (14638), 12600 states have internal predecessors, (14638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12601 states to 12601 states and 14638 transitions. [2024-11-19 18:04:29,516 INFO L78 Accepts]: Start accepts. Automaton has 12601 states and 14638 transitions. Word has length 514 [2024-11-19 18:04:29,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:29,516 INFO L471 AbstractCegarLoop]: Abstraction has 12601 states and 14638 transitions. [2024-11-19 18:04:29,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:29,516 INFO L276 IsEmpty]: Start isEmpty. Operand 12601 states and 14638 transitions. [2024-11-19 18:04:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2024-11-19 18:04:29,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:29,528 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:29,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 18:04:29,528 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:29,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:29,528 INFO L85 PathProgramCache]: Analyzing trace with hash -584826003, now seen corresponding path program 1 times [2024-11-19 18:04:29,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:29,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236514273] [2024-11-19 18:04:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:29,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 559 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-19 18:04:29,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:29,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236514273] [2024-11-19 18:04:29,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236514273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:29,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:29,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:04:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450207142] [2024-11-19 18:04:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:29,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:29,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:29,948 INFO L87 Difference]: Start difference. First operand 12601 states and 14638 transitions. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:31,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:31,020 INFO L93 Difference]: Finished difference Result 28899 states and 33610 transitions. [2024-11-19 18:04:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:31,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 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 535 [2024-11-19 18:04:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:31,035 INFO L225 Difference]: With dead ends: 28899 [2024-11-19 18:04:31,035 INFO L226 Difference]: Without dead ends: 16668 [2024-11-19 18:04:31,044 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 [2024-11-19 18:04:31,044 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 298 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:31,044 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 85 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:04:31,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16668 states. [2024-11-19 18:04:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16668 to 12049. [2024-11-19 18:04:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12049 states, 12048 states have (on average 1.1661686586985391) internal successors, (14050), 12048 states have internal predecessors, (14050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12049 states to 12049 states and 14050 transitions. [2024-11-19 18:04:31,145 INFO L78 Accepts]: Start accepts. Automaton has 12049 states and 14050 transitions. Word has length 535 [2024-11-19 18:04:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:31,145 INFO L471 AbstractCegarLoop]: Abstraction has 12049 states and 14050 transitions. [2024-11-19 18:04:31,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:31,145 INFO L276 IsEmpty]: Start isEmpty. Operand 12049 states and 14050 transitions. [2024-11-19 18:04:31,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2024-11-19 18:04:31,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:31,155 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:31,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 18:04:31,155 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:31,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:31,155 INFO L85 PathProgramCache]: Analyzing trace with hash -861206840, now seen corresponding path program 1 times [2024-11-19 18:04:31,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:31,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958348537] [2024-11-19 18:04:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:31,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 705 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-19 18:04:31,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:31,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958348537] [2024-11-19 18:04:31,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958348537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:31,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:31,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:04:31,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452491629] [2024-11-19 18:04:31,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:31,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:31,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:31,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:31,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:31,708 INFO L87 Difference]: Start difference. First operand 12049 states and 14050 transitions. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:32,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:32,894 INFO L93 Difference]: Finished difference Result 30746 states and 35969 transitions. [2024-11-19 18:04:32,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:32,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 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 561 [2024-11-19 18:04:32,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:32,910 INFO L225 Difference]: With dead ends: 30746 [2024-11-19 18:04:32,910 INFO L226 Difference]: Without dead ends: 19067 [2024-11-19 18:04:32,919 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 [2024-11-19 18:04:32,920 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 185 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:32,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 86 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 18:04:32,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19067 states. [2024-11-19 18:04:33,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19067 to 14453. [2024-11-19 18:04:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14453 states, 14452 states have (on average 1.17153335178522) internal successors, (16931), 14452 states have internal predecessors, (16931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:33,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14453 states to 14453 states and 16931 transitions. [2024-11-19 18:04:33,113 INFO L78 Accepts]: Start accepts. Automaton has 14453 states and 16931 transitions. Word has length 561 [2024-11-19 18:04:33,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:33,113 INFO L471 AbstractCegarLoop]: Abstraction has 14453 states and 16931 transitions. [2024-11-19 18:04:33,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:33,114 INFO L276 IsEmpty]: Start isEmpty. Operand 14453 states and 16931 transitions. [2024-11-19 18:04:33,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2024-11-19 18:04:33,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:33,134 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-19 18:04:33,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 18:04:33,135 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:33,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash 802140522, now seen corresponding path program 1 times [2024-11-19 18:04:33,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:33,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999962390] [2024-11-19 18:04:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:33,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2024-11-19 18:04:33,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:33,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999962390] [2024-11-19 18:04:33,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999962390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:33,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:33,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 18:04:33,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934923459] [2024-11-19 18:04:33,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:33,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:33,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:33,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:33,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:33,359 INFO L87 Difference]: Start difference. First operand 14453 states and 16931 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:33,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:33,728 INFO L93 Difference]: Finished difference Result 28527 states and 33465 transitions. [2024-11-19 18:04:33,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:33,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 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 602 [2024-11-19 18:04:33,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:33,740 INFO L225 Difference]: With dead ends: 28527 [2024-11-19 18:04:33,741 INFO L226 Difference]: Without dead ends: 14444 [2024-11-19 18:04:33,750 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 [2024-11-19 18:04:33,751 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 188 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:33,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 39 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 18:04:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14444 states. [2024-11-19 18:04:33,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14444 to 14440. [2024-11-19 18:04:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14440 states, 14439 states have (on average 1.1708567075282221) internal successors, (16906), 14439 states have internal predecessors, (16906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14440 states to 14440 states and 16906 transitions. [2024-11-19 18:04:33,864 INFO L78 Accepts]: Start accepts. Automaton has 14440 states and 16906 transitions. Word has length 602 [2024-11-19 18:04:33,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:33,864 INFO L471 AbstractCegarLoop]: Abstraction has 14440 states and 16906 transitions. [2024-11-19 18:04:33,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 14440 states and 16906 transitions. [2024-11-19 18:04:33,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2024-11-19 18:04:33,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:33,874 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:33,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 18:04:33,874 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:33,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:33,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1745204086, now seen corresponding path program 1 times [2024-11-19 18:04:33,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:33,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638176320] [2024-11-19 18:04:33,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:33,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 594 proven. 0 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2024-11-19 18:04:34,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:34,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638176320] [2024-11-19 18:04:34,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638176320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:34,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:34,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367739509] [2024-11-19 18:04:34,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:34,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:34,188 INFO L87 Difference]: Start difference. First operand 14440 states and 16906 transitions. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:34,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:34,921 INFO L93 Difference]: Finished difference Result 30547 states and 35892 transitions. [2024-11-19 18:04:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:34,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 622 [2024-11-19 18:04:34,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:34,935 INFO L225 Difference]: With dead ends: 30547 [2024-11-19 18:04:34,936 INFO L226 Difference]: Without dead ends: 16291 [2024-11-19 18:04:34,943 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 [2024-11-19 18:04:34,944 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 34 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:34,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 370 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 18:04:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16291 states. [2024-11-19 18:04:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16291 to 15172. [2024-11-19 18:04:35,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15172 states, 15171 states have (on average 1.139147056884846) internal successors, (17282), 15171 states have internal predecessors, (17282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:35,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15172 states to 15172 states and 17282 transitions. [2024-11-19 18:04:35,067 INFO L78 Accepts]: Start accepts. Automaton has 15172 states and 17282 transitions. Word has length 622 [2024-11-19 18:04:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:35,067 INFO L471 AbstractCegarLoop]: Abstraction has 15172 states and 17282 transitions. [2024-11-19 18:04:35,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 15172 states and 17282 transitions. [2024-11-19 18:04:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2024-11-19 18:04:35,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:35,077 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-19 18:04:35,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 18:04:35,077 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:35,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:35,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1165858962, now seen corresponding path program 1 times [2024-11-19 18:04:35,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:35,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156677463] [2024-11-19 18:04:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:35,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 621 proven. 154 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-19 18:04:35,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:35,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156677463] [2024-11-19 18:04:35,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156677463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:35,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032586160] [2024-11-19 18:04:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:35,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:35,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:35,559 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) [2024-11-19 18:04:35,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 18:04:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:35,761 INFO L255 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 18:04:35,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 621 proven. 154 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-19 18:04:37,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 18:04:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 621 proven. 154 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-19 18:04:38,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032586160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 18:04:38,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 18:04:38,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-11-19 18:04:38,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185413631] [2024-11-19 18:04:38,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 18:04:38,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 18:04:38,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 18:04:38,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 18:04:38,648 INFO L87 Difference]: Start difference. First operand 15172 states and 17282 transitions. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:39,800 INFO L93 Difference]: Finished difference Result 33219 states and 37863 transitions. [2024-11-19 18:04:39,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 18:04:39,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 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 626 [2024-11-19 18:04:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:39,817 INFO L225 Difference]: With dead ends: 33219 [2024-11-19 18:04:39,817 INFO L226 Difference]: Without dead ends: 18049 [2024-11-19 18:04:39,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1251 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 18:04:39,828 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 470 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:39,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 61 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 18:04:39,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18049 states. [2024-11-19 18:04:40,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18049 to 15157. [2024-11-19 18:04:40,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15157 states, 15156 states have (on average 1.1211401425178147) internal successors, (16992), 15156 states have internal predecessors, (16992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:40,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15157 states to 15157 states and 16992 transitions. [2024-11-19 18:04:40,125 INFO L78 Accepts]: Start accepts. Automaton has 15157 states and 16992 transitions. Word has length 626 [2024-11-19 18:04:40,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:40,126 INFO L471 AbstractCegarLoop]: Abstraction has 15157 states and 16992 transitions. [2024-11-19 18:04:40,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 15157 states and 16992 transitions. [2024-11-19 18:04:40,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2024-11-19 18:04:40,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:40,142 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-19 18:04:40,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 18:04:40,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 18:04:40,344 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:40,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:40,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1097980107, now seen corresponding path program 1 times [2024-11-19 18:04:40,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:40,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601333307] [2024-11-19 18:04:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:40,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 847 proven. 240 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-19 18:04:41,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:41,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601333307] [2024-11-19 18:04:41,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601333307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:41,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092028182] [2024-11-19 18:04:41,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:41,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:41,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:41,319 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) [2024-11-19 18:04:41,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 18:04:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:41,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-19 18:04:41,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 852 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-11-19 18:04:41,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:04:41,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092028182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:41,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:04:41,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-19 18:04:41,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623183318] [2024-11-19 18:04:41,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:41,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:41,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:41,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:41,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:04:41,584 INFO L87 Difference]: Start difference. First operand 15157 states and 16992 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:42,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:42,194 INFO L93 Difference]: Finished difference Result 30316 states and 33984 transitions. [2024-11-19 18:04:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:42,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 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 639 [2024-11-19 18:04:42,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:42,212 INFO L225 Difference]: With dead ends: 30316 [2024-11-19 18:04:42,213 INFO L226 Difference]: Without dead ends: 15345 [2024-11-19 18:04:42,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 18:04:42,224 INFO L432 NwaCegarLoop]: 328 mSDtfsCounter, 112 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:42,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 346 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:04:42,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15345 states. [2024-11-19 18:04:42,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15345 to 15157. [2024-11-19 18:04:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15157 states, 15156 states have (on average 1.103853259435207) internal successors, (16730), 15156 states have internal predecessors, (16730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15157 states to 15157 states and 16730 transitions. [2024-11-19 18:04:42,368 INFO L78 Accepts]: Start accepts. Automaton has 15157 states and 16730 transitions. Word has length 639 [2024-11-19 18:04:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:42,369 INFO L471 AbstractCegarLoop]: Abstraction has 15157 states and 16730 transitions. [2024-11-19 18:04:42,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 15157 states and 16730 transitions. [2024-11-19 18:04:42,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2024-11-19 18:04:42,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:42,379 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-19 18:04:42,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 18:04:42,579 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,SelfDestructingSolverStorable21 [2024-11-19 18:04:42,580 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:42,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1717664100, now seen corresponding path program 1 times [2024-11-19 18:04:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:42,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115579374] [2024-11-19 18:04:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:42,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 876 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2024-11-19 18:04:42,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:42,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115579374] [2024-11-19 18:04:42,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115579374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:42,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:42,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:42,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003273599] [2024-11-19 18:04:42,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:42,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:42,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:42,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:42,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:42,766 INFO L87 Difference]: Start difference. First operand 15157 states and 16730 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:43,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:43,464 INFO L93 Difference]: Finished difference Result 32518 states and 35866 transitions. [2024-11-19 18:04:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:43,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 645 [2024-11-19 18:04:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:43,486 INFO L225 Difference]: With dead ends: 32518 [2024-11-19 18:04:43,487 INFO L226 Difference]: Without dead ends: 18285 [2024-11-19 18:04:43,498 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 [2024-11-19 18:04:43,499 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 120 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:43,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 114 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:43,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18285 states. [2024-11-19 18:04:43,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18285 to 16627. [2024-11-19 18:04:43,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16627 states, 16626 states have (on average 1.0974377481053772) internal successors, (18246), 16626 states have internal predecessors, (18246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16627 states to 16627 states and 18246 transitions. [2024-11-19 18:04:43,748 INFO L78 Accepts]: Start accepts. Automaton has 16627 states and 18246 transitions. Word has length 645 [2024-11-19 18:04:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:43,748 INFO L471 AbstractCegarLoop]: Abstraction has 16627 states and 18246 transitions. [2024-11-19 18:04:43,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:43,749 INFO L276 IsEmpty]: Start isEmpty. Operand 16627 states and 18246 transitions. [2024-11-19 18:04:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2024-11-19 18:04:43,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:43,760 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-19 18:04:43,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 18:04:43,761 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:43,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:43,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1198800803, now seen corresponding path program 1 times [2024-11-19 18:04:43,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:43,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078664013] [2024-11-19 18:04:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:43,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 1049 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2024-11-19 18:04:44,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:44,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078664013] [2024-11-19 18:04:44,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078664013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:44,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:44,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:44,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550203291] [2024-11-19 18:04:44,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:44,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:44,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:44,051 INFO L87 Difference]: Start difference. First operand 16627 states and 18246 transitions. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:44,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:44,895 INFO L93 Difference]: Finished difference Result 35101 states and 38541 transitions. [2024-11-19 18:04:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:44,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 680 [2024-11-19 18:04:44,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:44,912 INFO L225 Difference]: With dead ends: 35101 [2024-11-19 18:04:44,913 INFO L226 Difference]: Without dead ends: 19582 [2024-11-19 18:04:44,923 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 [2024-11-19 18:04:44,924 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 192 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:44,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 58 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 18:04:44,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19582 states. [2024-11-19 18:04:45,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19582 to 16627. [2024-11-19 18:04:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16627 states, 16626 states have (on average 1.0974377481053772) internal successors, (18246), 16626 states have internal predecessors, (18246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16627 states to 16627 states and 18246 transitions. [2024-11-19 18:04:45,065 INFO L78 Accepts]: Start accepts. Automaton has 16627 states and 18246 transitions. Word has length 680 [2024-11-19 18:04:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:45,066 INFO L471 AbstractCegarLoop]: Abstraction has 16627 states and 18246 transitions. [2024-11-19 18:04:45,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:45,066 INFO L276 IsEmpty]: Start isEmpty. Operand 16627 states and 18246 transitions. [2024-11-19 18:04:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2024-11-19 18:04:45,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:45,077 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2024-11-19 18:04:45,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 18:04:45,078 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:45,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:45,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1912494515, now seen corresponding path program 1 times [2024-11-19 18:04:45,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:45,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484592007] [2024-11-19 18:04:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:45,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 1034 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2024-11-19 18:04:45,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:45,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484592007] [2024-11-19 18:04:45,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484592007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:45,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:45,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:45,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863953328] [2024-11-19 18:04:45,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:45,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:45,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:45,415 INFO L87 Difference]: Start difference. First operand 16627 states and 18246 transitions. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:45,985 INFO L93 Difference]: Finished difference Result 32882 states and 36090 transitions. [2024-11-19 18:04:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 694 [2024-11-19 18:04:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:46,003 INFO L225 Difference]: With dead ends: 32882 [2024-11-19 18:04:46,003 INFO L226 Difference]: Without dead ends: 17179 [2024-11-19 18:04:46,014 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 [2024-11-19 18:04:46,015 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 103 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:46,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 134 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:04:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17179 states. [2024-11-19 18:04:46,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17179 to 15701. [2024-11-19 18:04:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15701 states, 15700 states have (on average 1.0945859872611465) internal successors, (17185), 15700 states have internal predecessors, (17185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:46,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15701 states to 15701 states and 17185 transitions. [2024-11-19 18:04:46,195 INFO L78 Accepts]: Start accepts. Automaton has 15701 states and 17185 transitions. Word has length 694 [2024-11-19 18:04:46,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:46,195 INFO L471 AbstractCegarLoop]: Abstraction has 15701 states and 17185 transitions. [2024-11-19 18:04:46,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 15701 states and 17185 transitions. [2024-11-19 18:04:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2024-11-19 18:04:46,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:46,210 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:46,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 18:04:46,210 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:46,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:46,211 INFO L85 PathProgramCache]: Analyzing trace with hash 737170325, now seen corresponding path program 1 times [2024-11-19 18:04:46,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:46,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704301573] [2024-11-19 18:04:46,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:46,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 954 proven. 0 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2024-11-19 18:04:46,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:46,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704301573] [2024-11-19 18:04:46,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704301573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:46,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:46,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:46,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925659661] [2024-11-19 18:04:46,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:46,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:46,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:46,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:46,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:46,828 INFO L87 Difference]: Start difference. First operand 15701 states and 17185 transitions. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 3 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) [2024-11-19 18:04:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:47,869 INFO L93 Difference]: Finished difference Result 34722 states and 38039 transitions. [2024-11-19 18:04:47,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:47,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 3 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 725 [2024-11-19 18:04:47,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:47,889 INFO L225 Difference]: With dead ends: 34722 [2024-11-19 18:04:47,889 INFO L226 Difference]: Without dead ends: 19391 [2024-11-19 18:04:47,901 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 [2024-11-19 18:04:47,901 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 121 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:47,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 96 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 18:04:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19391 states. [2024-11-19 18:04:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19391 to 17732. [2024-11-19 18:04:48,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17732 states, 17731 states have (on average 1.0903502340533529) internal successors, (19333), 17731 states have internal predecessors, (19333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17732 states to 17732 states and 19333 transitions. [2024-11-19 18:04:48,148 INFO L78 Accepts]: Start accepts. Automaton has 17732 states and 19333 transitions. Word has length 725 [2024-11-19 18:04:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:48,148 INFO L471 AbstractCegarLoop]: Abstraction has 17732 states and 19333 transitions. [2024-11-19 18:04:48,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 3 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) [2024-11-19 18:04:48,148 INFO L276 IsEmpty]: Start isEmpty. Operand 17732 states and 19333 transitions. [2024-11-19 18:04:48,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2024-11-19 18:04:48,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:48,170 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-19 18:04:48,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 18:04:48,170 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:48,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:48,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1817314565, now seen corresponding path program 1 times [2024-11-19 18:04:48,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:48,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278691661] [2024-11-19 18:04:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:48,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1495 backedges. 903 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2024-11-19 18:04:48,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278691661] [2024-11-19 18:04:48,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278691661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:48,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:48,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:48,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898943543] [2024-11-19 18:04:48,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:48,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:48,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:48,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:48,577 INFO L87 Difference]: Start difference. First operand 17732 states and 19333 transitions. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:49,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:49,241 INFO L93 Difference]: Finished difference Result 35646 states and 38895 transitions. [2024-11-19 18:04:49,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:49,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 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 756 [2024-11-19 18:04:49,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:49,259 INFO L225 Difference]: With dead ends: 35646 [2024-11-19 18:04:49,259 INFO L226 Difference]: Without dead ends: 18654 [2024-11-19 18:04:49,270 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 [2024-11-19 18:04:49,272 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 195 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:49,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 338 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 18:04:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18654 states. [2024-11-19 18:04:49,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18654 to 14596. [2024-11-19 18:04:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14596 states, 14595 states have (on average 1.086125385405961) internal successors, (15852), 14595 states have internal predecessors, (15852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14596 states to 14596 states and 15852 transitions. [2024-11-19 18:04:49,427 INFO L78 Accepts]: Start accepts. Automaton has 14596 states and 15852 transitions. Word has length 756 [2024-11-19 18:04:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:49,428 INFO L471 AbstractCegarLoop]: Abstraction has 14596 states and 15852 transitions. [2024-11-19 18:04:49,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 14596 states and 15852 transitions. [2024-11-19 18:04:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2024-11-19 18:04:49,437 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:49,438 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:49,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 18:04:49,438 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:49,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:49,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1456791539, now seen corresponding path program 1 times [2024-11-19 18:04:49,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:49,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239557229] [2024-11-19 18:04:49,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:49,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 648 proven. 554 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-19 18:04:50,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:50,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239557229] [2024-11-19 18:04:50,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239557229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 18:04:50,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5107494] [2024-11-19 18:04:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:50,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:50,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 18:04:50,281 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) [2024-11-19 18:04:50,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 18:04:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:50,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 18:04:50,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 18:04:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 1027 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-19 18:04:50,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 18:04:50,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5107494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:50,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 18:04:50,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-19 18:04:50,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860753220] [2024-11-19 18:04:50,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:50,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:50,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:50,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:50,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:04:50,678 INFO L87 Difference]: Start difference. First operand 14596 states and 15852 transitions. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:51,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:51,205 INFO L93 Difference]: Finished difference Result 29199 states and 31740 transitions. [2024-11-19 18:04:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:51,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 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 763 [2024-11-19 18:04:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:51,216 INFO L225 Difference]: With dead ends: 29199 [2024-11-19 18:04:51,217 INFO L226 Difference]: Without dead ends: 15159 [2024-11-19 18:04:51,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 18:04:51,224 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 103 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:51,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 327 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:04:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15159 states. [2024-11-19 18:04:51,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15159 to 14782. [2024-11-19 18:04:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14782 states, 14781 states have (on average 1.085041607469048) internal successors, (16038), 14781 states have internal predecessors, (16038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14782 states to 14782 states and 16038 transitions. [2024-11-19 18:04:51,331 INFO L78 Accepts]: Start accepts. Automaton has 14782 states and 16038 transitions. Word has length 763 [2024-11-19 18:04:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:51,332 INFO L471 AbstractCegarLoop]: Abstraction has 14782 states and 16038 transitions. [2024-11-19 18:04:51,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:51,332 INFO L276 IsEmpty]: Start isEmpty. Operand 14782 states and 16038 transitions. [2024-11-19 18:04:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2024-11-19 18:04:51,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:51,342 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 18:04:51,348 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 18:04:51,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 18:04:51,543 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:51,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:51,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1494290570, now seen corresponding path program 1 times [2024-11-19 18:04:51,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:51,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547742605] [2024-11-19 18:04:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:51,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 1317 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2024-11-19 18:04:52,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:52,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547742605] [2024-11-19 18:04:52,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547742605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:52,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:52,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 18:04:52,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960361534] [2024-11-19 18:04:52,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:52,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 18:04:52,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:52,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 18:04:52,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 18:04:52,414 INFO L87 Difference]: Start difference. First operand 14782 states and 16038 transitions. Second operand has 4 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:53,307 INFO L93 Difference]: Finished difference Result 29374 states and 31788 transitions. [2024-11-19 18:04:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 18:04:53,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 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 817 [2024-11-19 18:04:53,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:53,324 INFO L225 Difference]: With dead ends: 29374 [2024-11-19 18:04:53,324 INFO L226 Difference]: Without dead ends: 15148 [2024-11-19 18:04:53,336 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 [2024-11-19 18:04:53,340 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 174 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:53,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 52 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 18:04:53,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2024-11-19 18:04:53,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 12564. [2024-11-19 18:04:53,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12564 states, 12563 states have (on average 1.078962031361936) internal successors, (13555), 12563 states have internal predecessors, (13555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12564 states to 12564 states and 13555 transitions. [2024-11-19 18:04:53,463 INFO L78 Accepts]: Start accepts. Automaton has 12564 states and 13555 transitions. Word has length 817 [2024-11-19 18:04:53,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:53,464 INFO L471 AbstractCegarLoop]: Abstraction has 12564 states and 13555 transitions. [2024-11-19 18:04:53,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:53,464 INFO L276 IsEmpty]: Start isEmpty. Operand 12564 states and 13555 transitions. [2024-11-19 18:04:53,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2024-11-19 18:04:53,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 18:04:53,474 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2024-11-19 18:04:53,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-19 18:04:53,475 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 18:04:53,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 18:04:53,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1603139587, now seen corresponding path program 1 times [2024-11-19 18:04:53,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 18:04:53,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155949100] [2024-11-19 18:04:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 18:04:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 18:04:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 18:04:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1896 backedges. 1341 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-19 18:04:54,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 18:04:54,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155949100] [2024-11-19 18:04:54,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155949100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 18:04:54,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 18:04:54,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 18:04:54,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980072376] [2024-11-19 18:04:54,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 18:04:54,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 18:04:54,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 18:04:54,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 18:04:54,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 18:04:54,179 INFO L87 Difference]: Start difference. First operand 12564 states and 13555 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 18:04:54,701 INFO L93 Difference]: Finished difference Result 22362 states and 24134 transitions. [2024-11-19 18:04:54,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 18:04:54,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 829 [2024-11-19 18:04:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 18:04:54,703 INFO L225 Difference]: With dead ends: 22362 [2024-11-19 18:04:54,703 INFO L226 Difference]: Without dead ends: 0 [2024-11-19 18:04:54,710 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 [2024-11-19 18:04:54,710 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 99 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 18:04:54,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 321 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 18:04:54,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-19 18:04:54,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-19 18:04:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:54,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 18:04:54,712 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 829 [2024-11-19 18:04:54,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 18:04:54,712 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 18:04:54,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 18:04:54,713 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-19 18:04:54,713 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-19 18:04:54,715 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-19 18:04:54,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 18:04:54,717 INFO L407 BasicCegarLoop]: Path program 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] [2024-11-19 18:04:54,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.