./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash 7e5038cf4746b0d33da8db40d97242789791fda4fe0e15050faace48f6985f4f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 01:57:47,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 01:57:47,306 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-20 01:57:47,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 01:57:47,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 01:57:47,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 01:57:47,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 01:57:47,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 01:57:47,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 01:57:47,344 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 01:57:47,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 01:57:47,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 01:57:47,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 01:57:47,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 01:57:47,348 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 01:57:47,348 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 01:57:47,349 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 01:57:47,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 01:57:47,352 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 01:57:47,352 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 01:57:47,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 01:57:47,353 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 01:57:47,353 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 01:57:47,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 01:57:47,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 01:57:47,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 01:57:47,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 01:57:47,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 01:57:47,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 01:57:47,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 01:57:47,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 01:57:47,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 01:57:47,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 01:57:47,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 01:57:47,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 01:57:47,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 01:57:47,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 01:57:47,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 01:57:47,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 01:57:47,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e5038cf4746b0d33da8db40d97242789791fda4fe0e15050faace48f6985f4f [2024-11-20 01:57:47,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 01:57:47,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 01:57:47,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 01:57:47,700 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 01:57:47,703 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 01:57:47,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2024-11-20 01:57:49,185 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 01:57:49,413 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 01:57:49,413 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c [2024-11-20 01:57:49,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3eeffe70/081c87237054443ea79272e7d0743da0/FLAG1db3a4264 [2024-11-20 01:57:49,437 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3eeffe70/081c87237054443ea79272e7d0743da0 [2024-11-20 01:57:49,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 01:57:49,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 01:57:49,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 01:57:49,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 01:57:49,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 01:57:49,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:49,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315d860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49, skipping insertion in model container [2024-11-20 01:57:49,447 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:49,497 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 01:57:49,684 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/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1249,1262] [2024-11-20 01:57:49,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 01:57:49,833 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 01:57:49,844 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/hardware-verification-bv/btor2c-lazyMod.sw_loop_v.c[1249,1262] [2024-11-20 01:57:49,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 01:57:49,932 INFO L204 MainTranslator]: Completed translation [2024-11-20 01:57:49,932 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49 WrapperNode [2024-11-20 01:57:49,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 01:57:49,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 01:57:49,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 01:57:49,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 01:57:49,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:49,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:50,156 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1013 [2024-11-20 01:57:50,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 01:57:50,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 01:57:50,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 01:57:50,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 01:57:50,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:50,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:50,203 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:50,256 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]. [2024-11-20 01:57:50,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:50,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:50,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:50,300 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:50,321 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:50,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:50,351 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 01:57:50,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 01:57:50,352 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 01:57:50,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 01:57:50,353 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (1/1) ... [2024-11-20 01:57:50,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 01:57:50,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 01:57:50,392 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) [2024-11-20 01:57:50,395 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 [2024-11-20 01:57:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 01:57:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 01:57:50,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 01:57:50,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 01:57:50,605 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 01:57:50,607 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 01:57:51,857 INFO L? ?]: Removed 647 outVars from TransFormulas that were not future-live. [2024-11-20 01:57:51,858 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 01:57:51,880 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 01:57:51,880 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-20 01:57:51,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:57:51 BoogieIcfgContainer [2024-11-20 01:57:51,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 01:57:51,885 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 01:57:51,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 01:57:51,889 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 01:57:51,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:57:49" (1/3) ... [2024-11-20 01:57:51,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4638d263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:57:51, skipping insertion in model container [2024-11-20 01:57:51,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:57:49" (2/3) ... [2024-11-20 01:57:51,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4638d263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:57:51, skipping insertion in model container [2024-11-20 01:57:51,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:57:51" (3/3) ... [2024-11-20 01:57:51,892 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_loop_v.c [2024-11-20 01:57:51,909 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 01:57:51,909 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 01:57:51,978 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 01:57:51,985 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;@69666838, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 01:57:51,986 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 01:57:51,991 INFO L276 IsEmpty]: Start isEmpty. Operand has 298 states, 296 states have (on average 1.4966216216216217) internal successors, (443), 297 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:52,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-20 01:57:52,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:57:52,002 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] [2024-11-20 01:57:52,003 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:57:52,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:57:52,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1579872556, now seen corresponding path program 1 times [2024-11-20 01:57:52,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:57:52,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658551350] [2024-11-20 01:57:52,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:57:52,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:57:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:57:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:57:52,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:57:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658551350] [2024-11-20 01:57:52,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658551350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:57:52,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:57:52,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 01:57:52,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624474295] [2024-11-20 01:57:52,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:57:52,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 01:57:52,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:57:52,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 01:57:52,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 01:57:52,640 INFO L87 Difference]: Start difference. First operand has 298 states, 296 states have (on average 1.4966216216216217) internal successors, (443), 297 states have internal predecessors, (443), 0 states have call successors, (0), 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 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:52,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:57:52,729 INFO L93 Difference]: Finished difference Result 557 states and 831 transitions. [2024-11-20 01:57:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 01:57:52,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-11-20 01:57:52,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:57:52,744 INFO L225 Difference]: With dead ends: 557 [2024-11-20 01:57:52,744 INFO L226 Difference]: Without dead ends: 297 [2024-11-20 01:57:52,747 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 01:57:52,750 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 0 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 01:57:52,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1305 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 01:57:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-20 01:57:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2024-11-20 01:57:52,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.489864864864865) internal successors, (441), 296 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 441 transitions. [2024-11-20 01:57:52,798 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 441 transitions. Word has length 27 [2024-11-20 01:57:52,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:57:52,799 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 441 transitions. [2024-11-20 01:57:52,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:52,799 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 441 transitions. [2024-11-20 01:57:52,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-20 01:57:52,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:57:52,800 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] [2024-11-20 01:57:52,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 01:57:52,801 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:57:52,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:57:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1729713684, now seen corresponding path program 1 times [2024-11-20 01:57:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:57:52,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525936688] [2024-11-20 01:57:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:57:52,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:57:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:57:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:57:52,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:57:52,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525936688] [2024-11-20 01:57:52,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525936688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:57:52,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:57:52,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 01:57:52,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55124391] [2024-11-20 01:57:52,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:57:52,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 01:57:52,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:57:52,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 01:57:52,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 01:57:52,940 INFO L87 Difference]: Start difference. First operand 297 states and 441 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:52,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:57:52,985 INFO L93 Difference]: Finished difference Result 558 states and 829 transitions. [2024-11-20 01:57:52,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 01:57:52,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-11-20 01:57:52,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:57:52,988 INFO L225 Difference]: With dead ends: 558 [2024-11-20 01:57:52,988 INFO L226 Difference]: Without dead ends: 299 [2024-11-20 01:57:52,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 01:57:52,990 INFO L432 NwaCegarLoop]: 437 mSDtfsCounter, 0 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 01:57:52,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1301 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 01:57:52,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-20 01:57:53,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2024-11-20 01:57:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.4865771812080537) internal successors, (443), 298 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 443 transitions. [2024-11-20 01:57:53,004 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 443 transitions. Word has length 28 [2024-11-20 01:57:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:57:53,004 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 443 transitions. [2024-11-20 01:57:53,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:53,004 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 443 transitions. [2024-11-20 01:57:53,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-20 01:57:53,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:57:53,005 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] [2024-11-20 01:57:53,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 01:57:53,006 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:57:53,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:57:53,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1115484845, now seen corresponding path program 1 times [2024-11-20 01:57:53,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:57:53,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438659961] [2024-11-20 01:57:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:57:53,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:57:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:57:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:57:53,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:57:53,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438659961] [2024-11-20 01:57:53,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438659961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:57:53,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:57:53,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:57:53,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834576167] [2024-11-20 01:57:53,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:57:53,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:57:53,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:57:53,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:57:53,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:57:53,220 INFO L87 Difference]: Start difference. First operand 299 states and 443 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:53,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:57:53,344 INFO L93 Difference]: Finished difference Result 795 states and 1180 transitions. [2024-11-20 01:57:53,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:57:53,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-20 01:57:53,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:57:53,348 INFO L225 Difference]: With dead ends: 795 [2024-11-20 01:57:53,349 INFO L226 Difference]: Without dead ends: 534 [2024-11-20 01:57:53,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:57:53,351 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 1117 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:57:53,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1275 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:57:53,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-20 01:57:53,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 301. [2024-11-20 01:57:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.4833333333333334) internal successors, (445), 300 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 445 transitions. [2024-11-20 01:57:53,382 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 445 transitions. Word has length 29 [2024-11-20 01:57:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:57:53,382 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 445 transitions. [2024-11-20 01:57:53,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 445 transitions. [2024-11-20 01:57:53,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-20 01:57:53,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:57:53,396 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:57:53,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 01:57:53,396 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:57:53,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:57:53,397 INFO L85 PathProgramCache]: Analyzing trace with hash -909755532, now seen corresponding path program 1 times [2024-11-20 01:57:53,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:57:53,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117768468] [2024-11-20 01:57:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:57:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:57:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:57:54,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:57:54,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:57:54,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117768468] [2024-11-20 01:57:54,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117768468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:57:54,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:57:54,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 01:57:54,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364460127] [2024-11-20 01:57:54,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:57:54,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 01:57:54,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:57:54,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 01:57:54,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 01:57:54,762 INFO L87 Difference]: Start difference. First operand 301 states and 445 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:54,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:57:54,881 INFO L93 Difference]: Finished difference Result 778 states and 1154 transitions. [2024-11-20 01:57:54,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 01:57:54,881 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 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 158 [2024-11-20 01:57:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:57:54,885 INFO L225 Difference]: With dead ends: 778 [2024-11-20 01:57:54,885 INFO L226 Difference]: Without dead ends: 517 [2024-11-20 01:57:54,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-20 01:57:54,887 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 1048 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:57:54,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1578 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:57:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-20 01:57:54,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 326. [2024-11-20 01:57:54,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.4738461538461538) internal successors, (479), 325 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 479 transitions. [2024-11-20 01:57:54,897 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 479 transitions. Word has length 158 [2024-11-20 01:57:54,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:57:54,898 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 479 transitions. [2024-11-20 01:57:54,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 479 transitions. [2024-11-20 01:57:54,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-20 01:57:54,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:57:54,901 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:57:54,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 01:57:54,902 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:57:54,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:57:54,903 INFO L85 PathProgramCache]: Analyzing trace with hash -677895360, now seen corresponding path program 1 times [2024-11-20 01:57:54,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:57:54,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849270767] [2024-11-20 01:57:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:57:54,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:57:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:57:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:57:56,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:57:56,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849270767] [2024-11-20 01:57:56,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849270767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:57:56,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:57:56,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:57:56,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942389020] [2024-11-20 01:57:56,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:57:56,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:57:56,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:57:56,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:57:56,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:57:56,067 INFO L87 Difference]: Start difference. First operand 326 states and 479 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:57:56,207 INFO L93 Difference]: Finished difference Result 778 states and 1152 transitions. [2024-11-20 01:57:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:57:56,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2024-11-20 01:57:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:57:56,210 INFO L225 Difference]: With dead ends: 778 [2024-11-20 01:57:56,210 INFO L226 Difference]: Without dead ends: 517 [2024-11-20 01:57:56,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:57:56,214 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 1026 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:57:56,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1263 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:57:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-20 01:57:56,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 355. [2024-11-20 01:57:56,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.4717514124293785) internal successors, (521), 354 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 521 transitions. [2024-11-20 01:57:56,223 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 521 transitions. Word has length 159 [2024-11-20 01:57:56,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:57:56,224 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 521 transitions. [2024-11-20 01:57:56,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:56,225 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 521 transitions. [2024-11-20 01:57:56,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-20 01:57:56,228 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:57:56,228 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:57:56,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 01:57:56,229 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:57:56,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:57:56,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1680367235, now seen corresponding path program 1 times [2024-11-20 01:57:56,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:57:56,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252498078] [2024-11-20 01:57:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:57:56,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:57:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:57:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:57:57,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:57:57,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252498078] [2024-11-20 01:57:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252498078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:57:57,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:57:57,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:57:57,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562752036] [2024-11-20 01:57:57,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:57:57,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:57:57,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:57:57,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:57:57,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:57:57,616 INFO L87 Difference]: Start difference. First operand 355 states and 521 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:57:57,723 INFO L93 Difference]: Finished difference Result 778 states and 1150 transitions. [2024-11-20 01:57:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:57:57,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-20 01:57:57,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:57:57,728 INFO L225 Difference]: With dead ends: 778 [2024-11-20 01:57:57,728 INFO L226 Difference]: Without dead ends: 517 [2024-11-20 01:57:57,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:57:57,730 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 996 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:57:57,730 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1262 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:57:57,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-20 01:57:57,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 406. [2024-11-20 01:57:57,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.471604938271605) internal successors, (596), 405 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 596 transitions. [2024-11-20 01:57:57,741 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 596 transitions. Word has length 161 [2024-11-20 01:57:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:57:57,742 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 596 transitions. [2024-11-20 01:57:57,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:57,745 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 596 transitions. [2024-11-20 01:57:57,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-20 01:57:57,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:57:57,747 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:57:57,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 01:57:57,747 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:57:57,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:57:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash -433125898, now seen corresponding path program 1 times [2024-11-20 01:57:57,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:57:57,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435299543] [2024-11-20 01:57:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:57:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:57:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:57:58,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:57:58,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:57:58,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435299543] [2024-11-20 01:57:58,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435299543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:57:58,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:57:58,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:57:58,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955248448] [2024-11-20 01:57:58,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:57:58,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:57:58,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:57:58,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:57:58,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:57:58,777 INFO L87 Difference]: Start difference. First operand 406 states and 596 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:58,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:57:58,893 INFO L93 Difference]: Finished difference Result 778 states and 1149 transitions. [2024-11-20 01:57:58,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:57:58,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2024-11-20 01:57:58,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:57:58,896 INFO L225 Difference]: With dead ends: 778 [2024-11-20 01:57:58,896 INFO L226 Difference]: Without dead ends: 517 [2024-11-20 01:57:58,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:57:58,898 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 951 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:57:58,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1262 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:57:58,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-20 01:57:58,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 490. [2024-11-20 01:57:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.474437627811861) internal successors, (721), 489 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 721 transitions. [2024-11-20 01:57:58,909 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 721 transitions. Word has length 162 [2024-11-20 01:57:58,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:57:58,910 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 721 transitions. [2024-11-20 01:57:58,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:57:58,910 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 721 transitions. [2024-11-20 01:57:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-20 01:57:58,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:57:58,912 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:57:58,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 01:57:58,913 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:57:58,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:57:58,913 INFO L85 PathProgramCache]: Analyzing trace with hash -623708650, now seen corresponding path program 1 times [2024-11-20 01:57:58,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:57:58,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949633705] [2024-11-20 01:57:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:57:58,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:57:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:57:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:57:59,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:57:59,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949633705] [2024-11-20 01:57:59,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949633705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:57:59,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:57:59,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:57:59,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359187207] [2024-11-20 01:57:59,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:57:59,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:57:59,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:57:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:57:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:57:59,942 INFO L87 Difference]: Start difference. First operand 490 states and 721 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:00,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:00,046 INFO L93 Difference]: Finished difference Result 804 states and 1186 transitions. [2024-11-20 01:58:00,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:58:00,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 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 163 [2024-11-20 01:58:00,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:00,049 INFO L225 Difference]: With dead ends: 804 [2024-11-20 01:58:00,049 INFO L226 Difference]: Without dead ends: 517 [2024-11-20 01:58:00,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:00,052 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 963 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:00,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1262 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-20 01:58:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 490. [2024-11-20 01:58:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.4723926380368098) internal successors, (720), 489 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 720 transitions. [2024-11-20 01:58:00,066 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 720 transitions. Word has length 163 [2024-11-20 01:58:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:00,066 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 720 transitions. [2024-11-20 01:58:00,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 720 transitions. [2024-11-20 01:58:00,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-20 01:58:00,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:00,068 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:00,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 01:58:00,069 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:00,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:00,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1521687385, now seen corresponding path program 1 times [2024-11-20 01:58:00,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:00,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429243812] [2024-11-20 01:58:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:00,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:01,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:01,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429243812] [2024-11-20 01:58:01,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429243812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:01,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:01,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:58:01,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993704543] [2024-11-20 01:58:01,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:01,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:58:01,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:01,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:58:01,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:58:01,266 INFO L87 Difference]: Start difference. First operand 490 states and 720 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 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) [2024-11-20 01:58:01,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:01,388 INFO L93 Difference]: Finished difference Result 832 states and 1226 transitions. [2024-11-20 01:58:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:58:01,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 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 [2024-11-20 01:58:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:01,391 INFO L225 Difference]: With dead ends: 832 [2024-11-20 01:58:01,392 INFO L226 Difference]: Without dead ends: 517 [2024-11-20 01:58:01,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:01,393 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 975 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:01,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1262 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-20 01:58:01,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 490. [2024-11-20 01:58:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.4703476482617588) internal successors, (719), 489 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 719 transitions. [2024-11-20 01:58:01,404 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 719 transitions. Word has length 164 [2024-11-20 01:58:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:01,405 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 719 transitions. [2024-11-20 01:58:01,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 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) [2024-11-20 01:58:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 719 transitions. [2024-11-20 01:58:01,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-20 01:58:01,407 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:01,407 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:01,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 01:58:01,408 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:01,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:01,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1168370331, now seen corresponding path program 1 times [2024-11-20 01:58:01,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:01,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817669190] [2024-11-20 01:58:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:01,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:02,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:02,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817669190] [2024-11-20 01:58:02,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817669190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:02,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 01:58:02,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007066065] [2024-11-20 01:58:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:02,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:02,484 INFO L87 Difference]: Start difference. First operand 490 states and 719 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:02,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:02,616 INFO L93 Difference]: Finished difference Result 786 states and 1158 transitions. [2024-11-20 01:58:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 01:58:02,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2024-11-20 01:58:02,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:02,619 INFO L225 Difference]: With dead ends: 786 [2024-11-20 01:58:02,619 INFO L226 Difference]: Without dead ends: 525 [2024-11-20 01:58:02,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-20 01:58:02,620 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 965 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:02,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 1873 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:02,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-20 01:58:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 493. [2024-11-20 01:58:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.4695121951219512) internal successors, (723), 492 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 723 transitions. [2024-11-20 01:58:02,632 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 723 transitions. Word has length 165 [2024-11-20 01:58:02,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:02,633 INFO L471 AbstractCegarLoop]: Abstraction has 493 states and 723 transitions. [2024-11-20 01:58:02,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 723 transitions. [2024-11-20 01:58:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-20 01:58:02,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:02,635 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:02,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 01:58:02,635 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:02,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:02,636 INFO L85 PathProgramCache]: Analyzing trace with hash -583480850, now seen corresponding path program 1 times [2024-11-20 01:58:02,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:02,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42916535] [2024-11-20 01:58:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:02,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:03,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:03,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42916535] [2024-11-20 01:58:03,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42916535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:03,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:03,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 01:58:03,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954302043] [2024-11-20 01:58:03,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:03,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:03,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:03,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:03,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:03,815 INFO L87 Difference]: Start difference. First operand 493 states and 723 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 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) [2024-11-20 01:58:03,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:03,977 INFO L93 Difference]: Finished difference Result 841 states and 1237 transitions. [2024-11-20 01:58:03,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 01:58:03,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 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 166 [2024-11-20 01:58:03,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:03,980 INFO L225 Difference]: With dead ends: 841 [2024-11-20 01:58:03,980 INFO L226 Difference]: Without dead ends: 527 [2024-11-20 01:58:03,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-20 01:58:03,981 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 995 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:03,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 1873 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-20 01:58:03,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 495. [2024-11-20 01:58:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.4676113360323886) internal successors, (725), 494 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 725 transitions. [2024-11-20 01:58:03,996 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 725 transitions. Word has length 166 [2024-11-20 01:58:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:03,996 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 725 transitions. [2024-11-20 01:58:03,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 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) [2024-11-20 01:58:03,997 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 725 transitions. [2024-11-20 01:58:03,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-20 01:58:03,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:03,999 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:03,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 01:58:03,999 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:04,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:04,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1960370405, now seen corresponding path program 1 times [2024-11-20 01:58:04,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:04,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511421082] [2024-11-20 01:58:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:04,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:05,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:05,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511421082] [2024-11-20 01:58:05,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511421082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:05,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:05,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 01:58:05,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168766147] [2024-11-20 01:58:05,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:05,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:05,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:05,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:05,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:05,190 INFO L87 Difference]: Start difference. First operand 495 states and 725 transitions. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:05,325 INFO L93 Difference]: Finished difference Result 815 states and 1198 transitions. [2024-11-20 01:58:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 01:58:05,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-11-20 01:58:05,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:05,328 INFO L225 Difference]: With dead ends: 815 [2024-11-20 01:58:05,329 INFO L226 Difference]: Without dead ends: 529 [2024-11-20 01:58:05,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-20 01:58:05,331 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 979 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:05,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1873 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-20 01:58:05,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 497. [2024-11-20 01:58:05,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.465725806451613) internal successors, (727), 496 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 727 transitions. [2024-11-20 01:58:05,342 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 727 transitions. Word has length 167 [2024-11-20 01:58:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:05,343 INFO L471 AbstractCegarLoop]: Abstraction has 497 states and 727 transitions. [2024-11-20 01:58:05,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 727 transitions. [2024-11-20 01:58:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-20 01:58:05,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:05,345 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:05,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 01:58:05,345 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:05,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:05,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1161984459, now seen corresponding path program 1 times [2024-11-20 01:58:05,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:05,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214217332] [2024-11-20 01:58:05,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:05,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:06,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:06,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214217332] [2024-11-20 01:58:06,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214217332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:06,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:06,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 01:58:06,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008419527] [2024-11-20 01:58:06,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:06,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:06,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:06,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:06,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:06,369 INFO L87 Difference]: Start difference. First operand 497 states and 727 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:06,508 INFO L93 Difference]: Finished difference Result 817 states and 1200 transitions. [2024-11-20 01:58:06,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 01:58:06,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-11-20 01:58:06,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:06,511 INFO L225 Difference]: With dead ends: 817 [2024-11-20 01:58:06,511 INFO L226 Difference]: Without dead ends: 535 [2024-11-20 01:58:06,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-20 01:58:06,512 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 988 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:06,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 1883 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:06,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-20 01:58:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 499. [2024-11-20 01:58:06,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.463855421686747) internal successors, (729), 498 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 729 transitions. [2024-11-20 01:58:06,523 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 729 transitions. Word has length 168 [2024-11-20 01:58:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:06,523 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 729 transitions. [2024-11-20 01:58:06,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 729 transitions. [2024-11-20 01:58:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-20 01:58:06,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:06,525 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:06,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 01:58:06,526 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:06,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1061113191, now seen corresponding path program 1 times [2024-11-20 01:58:06,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:06,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076366916] [2024-11-20 01:58:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:07,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:07,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076366916] [2024-11-20 01:58:07,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076366916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:07,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:07,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:58:07,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814015861] [2024-11-20 01:58:07,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:07,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:58:07,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:07,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:58:07,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:58:07,500 INFO L87 Difference]: Start difference. First operand 499 states and 729 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:07,599 INFO L93 Difference]: Finished difference Result 789 states and 1159 transitions. [2024-11-20 01:58:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:58:07,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2024-11-20 01:58:07,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:07,602 INFO L225 Difference]: With dead ends: 789 [2024-11-20 01:58:07,602 INFO L226 Difference]: Without dead ends: 528 [2024-11-20 01:58:07,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:07,603 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 931 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:07,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1258 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:07,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2024-11-20 01:58:07,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 526. [2024-11-20 01:58:07,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.4628571428571429) internal successors, (768), 525 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:07,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 768 transitions. [2024-11-20 01:58:07,614 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 768 transitions. Word has length 168 [2024-11-20 01:58:07,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:07,615 INFO L471 AbstractCegarLoop]: Abstraction has 526 states and 768 transitions. [2024-11-20 01:58:07,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 768 transitions. [2024-11-20 01:58:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-20 01:58:07,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:07,617 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:07,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 01:58:07,617 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:07,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:07,618 INFO L85 PathProgramCache]: Analyzing trace with hash -91921578, now seen corresponding path program 1 times [2024-11-20 01:58:07,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:07,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145349886] [2024-11-20 01:58:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:07,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:08,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:08,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145349886] [2024-11-20 01:58:08,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145349886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:08,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:08,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 01:58:08,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945348417] [2024-11-20 01:58:08,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:08,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:08,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:08,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:08,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:08,660 INFO L87 Difference]: Start difference. First operand 526 states and 768 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:08,777 INFO L93 Difference]: Finished difference Result 816 states and 1197 transitions. [2024-11-20 01:58:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 01:58:08,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2024-11-20 01:58:08,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:08,780 INFO L225 Difference]: With dead ends: 816 [2024-11-20 01:58:08,780 INFO L226 Difference]: Without dead ends: 537 [2024-11-20 01:58:08,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-20 01:58:08,782 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 970 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:08,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1881 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2024-11-20 01:58:08,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 528. [2024-11-20 01:58:08,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.4611005692599621) internal successors, (770), 527 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 770 transitions. [2024-11-20 01:58:08,792 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 770 transitions. Word has length 169 [2024-11-20 01:58:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:08,792 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 770 transitions. [2024-11-20 01:58:08,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 770 transitions. [2024-11-20 01:58:08,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-20 01:58:08,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:08,794 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:08,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 01:58:08,795 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:08,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:08,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1132940090, now seen corresponding path program 1 times [2024-11-20 01:58:08,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:08,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992915591] [2024-11-20 01:58:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:09,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:09,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992915591] [2024-11-20 01:58:09,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992915591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:09,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:09,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 01:58:09,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242633358] [2024-11-20 01:58:09,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:09,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:09,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:09,788 INFO L87 Difference]: Start difference. First operand 528 states and 770 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:09,926 INFO L93 Difference]: Finished difference Result 796 states and 1167 transitions. [2024-11-20 01:58:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 01:58:09,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2024-11-20 01:58:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:09,928 INFO L225 Difference]: With dead ends: 796 [2024-11-20 01:58:09,929 INFO L226 Difference]: Without dead ends: 535 [2024-11-20 01:58:09,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-20 01:58:09,930 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 939 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:09,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [939 Valid, 2101 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:09,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-20 01:58:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 531. [2024-11-20 01:58:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.460377358490566) internal successors, (774), 530 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 774 transitions. [2024-11-20 01:58:09,940 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 774 transitions. Word has length 169 [2024-11-20 01:58:09,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:09,940 INFO L471 AbstractCegarLoop]: Abstraction has 531 states and 774 transitions. [2024-11-20 01:58:09,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 774 transitions. [2024-11-20 01:58:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-20 01:58:09,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:09,943 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:09,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 01:58:09,943 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:09,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:09,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1516275082, now seen corresponding path program 1 times [2024-11-20 01:58:09,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:09,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481768152] [2024-11-20 01:58:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:09,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:10,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481768152] [2024-11-20 01:58:10,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481768152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:10,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:10,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 01:58:10,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132280526] [2024-11-20 01:58:10,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:10,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:10,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:10,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:10,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:10,916 INFO L87 Difference]: Start difference. First operand 531 states and 774 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:11,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:11,054 INFO L93 Difference]: Finished difference Result 802 states and 1175 transitions. [2024-11-20 01:58:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 01:58:11,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-11-20 01:58:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:11,056 INFO L225 Difference]: With dead ends: 802 [2024-11-20 01:58:11,057 INFO L226 Difference]: Without dead ends: 541 [2024-11-20 01:58:11,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-20 01:58:11,058 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 948 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:11,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 2101 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-11-20 01:58:11,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 537. [2024-11-20 01:58:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 536 states have (on average 1.458955223880597) internal successors, (782), 536 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 782 transitions. [2024-11-20 01:58:11,069 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 782 transitions. Word has length 170 [2024-11-20 01:58:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:11,070 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 782 transitions. [2024-11-20 01:58:11,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 782 transitions. [2024-11-20 01:58:11,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-20 01:58:11,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:11,072 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:11,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 01:58:11,072 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:11,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:11,073 INFO L85 PathProgramCache]: Analyzing trace with hash 724587046, now seen corresponding path program 1 times [2024-11-20 01:58:11,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:11,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046029975] [2024-11-20 01:58:11,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:11,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:12,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:12,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046029975] [2024-11-20 01:58:12,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046029975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 01:58:12,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96100932] [2024-11-20 01:58:12,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:12,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 01:58:12,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 01:58:12,141 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) [2024-11-20 01:58:12,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 01:58:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:12,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-20 01:58:12,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 01:58:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:13,409 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 01:58:13,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96100932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:13,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 01:58:13,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-20 01:58:13,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489713759] [2024-11-20 01:58:13,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:13,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:13,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:13,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:13,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-20 01:58:13,412 INFO L87 Difference]: Start difference. First operand 537 states and 782 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:13,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:13,721 INFO L93 Difference]: Finished difference Result 1003 states and 1463 transitions. [2024-11-20 01:58:13,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 01:58:13,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2024-11-20 01:58:13,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:13,724 INFO L225 Difference]: With dead ends: 1003 [2024-11-20 01:58:13,724 INFO L226 Difference]: Without dead ends: 540 [2024-11-20 01:58:13,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-20 01:58:13,726 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 332 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:13,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 1979 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 01:58:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-11-20 01:58:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2024-11-20 01:58:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.4564007421150278) internal successors, (785), 539 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:13,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 785 transitions. [2024-11-20 01:58:13,740 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 785 transitions. Word has length 170 [2024-11-20 01:58:13,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:13,741 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 785 transitions. [2024-11-20 01:58:13,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:13,741 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 785 transitions. [2024-11-20 01:58:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-20 01:58:13,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:13,743 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:13,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 01:58:13,947 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,SelfDestructingSolverStorable17 [2024-11-20 01:58:13,948 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:13,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash -74284501, now seen corresponding path program 1 times [2024-11-20 01:58:13,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:13,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831261775] [2024-11-20 01:58:13,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:13,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:15,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:15,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831261775] [2024-11-20 01:58:15,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831261775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:15,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:15,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:58:15,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885054124] [2024-11-20 01:58:15,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:15,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:58:15,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:15,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:58:15,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:58:15,738 INFO L87 Difference]: Start difference. First operand 540 states and 785 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:15,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:15,849 INFO L93 Difference]: Finished difference Result 830 states and 1215 transitions. [2024-11-20 01:58:15,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:58:15,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2024-11-20 01:58:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:15,852 INFO L225 Difference]: With dead ends: 830 [2024-11-20 01:58:15,852 INFO L226 Difference]: Without dead ends: 569 [2024-11-20 01:58:15,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:58:15,853 INFO L432 NwaCegarLoop]: 414 mSDtfsCounter, 258 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:15,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1600 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-20 01:58:15,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 567. [2024-11-20 01:58:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.4558303886925794) internal successors, (824), 566 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 824 transitions. [2024-11-20 01:58:15,868 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 824 transitions. Word has length 171 [2024-11-20 01:58:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:15,869 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 824 transitions. [2024-11-20 01:58:15,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 824 transitions. [2024-11-20 01:58:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-20 01:58:15,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:15,871 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:15,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 01:58:15,871 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:15,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash -2125515446, now seen corresponding path program 1 times [2024-11-20 01:58:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:15,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291480928] [2024-11-20 01:58:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:15,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:16,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:16,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291480928] [2024-11-20 01:58:16,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291480928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:16,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:16,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:58:16,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193410084] [2024-11-20 01:58:16,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:16,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:58:16,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:16,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:58:16,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:58:16,814 INFO L87 Difference]: Start difference. First operand 567 states and 824 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:16,921 INFO L93 Difference]: Finished difference Result 984 states and 1433 transitions. [2024-11-20 01:58:16,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:58:16,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2024-11-20 01:58:16,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:16,924 INFO L225 Difference]: With dead ends: 984 [2024-11-20 01:58:16,924 INFO L226 Difference]: Without dead ends: 567 [2024-11-20 01:58:16,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:16,926 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 986 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:16,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1263 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:16,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-11-20 01:58:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2024-11-20 01:58:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.4540636042402826) internal successors, (823), 566 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:16,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 823 transitions. [2024-11-20 01:58:16,941 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 823 transitions. Word has length 172 [2024-11-20 01:58:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:16,942 INFO L471 AbstractCegarLoop]: Abstraction has 567 states and 823 transitions. [2024-11-20 01:58:16,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 823 transitions. [2024-11-20 01:58:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-20 01:58:16,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:16,944 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:16,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-20 01:58:16,944 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:16,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash -917272252, now seen corresponding path program 1 times [2024-11-20 01:58:16,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:16,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580350905] [2024-11-20 01:58:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:16,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:17,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:17,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580350905] [2024-11-20 01:58:17,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580350905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:17,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:17,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:58:17,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436230450] [2024-11-20 01:58:17,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:17,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:58:17,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:17,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:58:17,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:58:17,756 INFO L87 Difference]: Start difference. First operand 567 states and 823 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:17,854 INFO L93 Difference]: Finished difference Result 952 states and 1386 transitions. [2024-11-20 01:58:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:58:17,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-11-20 01:58:17,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:17,856 INFO L225 Difference]: With dead ends: 952 [2024-11-20 01:58:17,857 INFO L226 Difference]: Without dead ends: 565 [2024-11-20 01:58:17,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:17,858 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 968 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:17,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 1263 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-11-20 01:58:17,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2024-11-20 01:58:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 564 states have (on average 1.4539007092198581) internal successors, (820), 564 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 820 transitions. [2024-11-20 01:58:17,872 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 820 transitions. Word has length 173 [2024-11-20 01:58:17,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:17,873 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 820 transitions. [2024-11-20 01:58:17,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:17,873 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 820 transitions. [2024-11-20 01:58:17,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-20 01:58:17,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:17,876 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:17,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-20 01:58:17,876 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:17,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:17,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1071220696, now seen corresponding path program 1 times [2024-11-20 01:58:17,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:17,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787884790] [2024-11-20 01:58:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:17,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:19,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:19,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787884790] [2024-11-20 01:58:19,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787884790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:19,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:19,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:58:19,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859841678] [2024-11-20 01:58:19,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:19,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:58:19,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:58:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:58:19,265 INFO L87 Difference]: Start difference. First operand 565 states and 820 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:19,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:19,367 INFO L93 Difference]: Finished difference Result 828 states and 1210 transitions. [2024-11-20 01:58:19,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:58:19,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-11-20 01:58:19,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:19,370 INFO L225 Difference]: With dead ends: 828 [2024-11-20 01:58:19,371 INFO L226 Difference]: Without dead ends: 567 [2024-11-20 01:58:19,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:58:19,374 INFO L432 NwaCegarLoop]: 415 mSDtfsCounter, 254 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:19,374 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1601 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2024-11-20 01:58:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 566. [2024-11-20 01:58:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.4530973451327434) internal successors, (821), 565 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 821 transitions. [2024-11-20 01:58:19,385 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 821 transitions. Word has length 173 [2024-11-20 01:58:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:19,386 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 821 transitions. [2024-11-20 01:58:19,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:19,386 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 821 transitions. [2024-11-20 01:58:19,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-20 01:58:19,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:19,387 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:19,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-20 01:58:19,387 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:19,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:19,388 INFO L85 PathProgramCache]: Analyzing trace with hash 233314096, now seen corresponding path program 1 times [2024-11-20 01:58:19,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:19,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631499815] [2024-11-20 01:58:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:19,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:20,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631499815] [2024-11-20 01:58:20,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631499815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 01:58:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253069517] [2024-11-20 01:58:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:20,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 01:58:20,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 01:58:20,978 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) [2024-11-20 01:58:20,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 01:58:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:21,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-20 01:58:21,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 01:58:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:22,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 01:58:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:23,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253069517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 01:58:23,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 01:58:23,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 29 [2024-11-20 01:58:23,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790144667] [2024-11-20 01:58:23,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 01:58:23,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-20 01:58:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-20 01:58:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2024-11-20 01:58:23,403 INFO L87 Difference]: Start difference. First operand 566 states and 821 transitions. Second operand has 29 states, 29 states have (on average 17.517241379310345) internal successors, (508), 29 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:24,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:24,267 INFO L93 Difference]: Finished difference Result 1558 states and 2262 transitions. [2024-11-20 01:58:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 01:58:24,268 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 17.517241379310345) internal successors, (508), 29 states have internal predecessors, (508), 0 states have call successors, (0), 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 174 [2024-11-20 01:58:24,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:24,272 INFO L225 Difference]: With dead ends: 1558 [2024-11-20 01:58:24,272 INFO L226 Difference]: Without dead ends: 1051 [2024-11-20 01:58:24,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2024-11-20 01:58:24,276 INFO L432 NwaCegarLoop]: 693 mSDtfsCounter, 2454 mSDsluCounter, 8990 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2454 SdHoareTripleChecker+Valid, 9683 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:24,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2454 Valid, 9683 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 01:58:24,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2024-11-20 01:58:24,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 818. [2024-11-20 01:58:24,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 817 states have (on average 1.4406364749082008) internal successors, (1177), 817 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1177 transitions. [2024-11-20 01:58:24,293 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1177 transitions. Word has length 174 [2024-11-20 01:58:24,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:24,293 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 1177 transitions. [2024-11-20 01:58:24,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 17.517241379310345) internal successors, (508), 29 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:24,294 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1177 transitions. [2024-11-20 01:58:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-20 01:58:24,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:24,295 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:24,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 01:58:24,496 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,SelfDestructingSolverStorable22 [2024-11-20 01:58:24,497 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:24,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:24,497 INFO L85 PathProgramCache]: Analyzing trace with hash 57863534, now seen corresponding path program 1 times [2024-11-20 01:58:24,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:24,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974032503] [2024-11-20 01:58:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:24,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:25,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:25,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974032503] [2024-11-20 01:58:25,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974032503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:25,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:25,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 01:58:25,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121219765] [2024-11-20 01:58:25,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:25,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:25,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:25,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:25,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:25,027 INFO L87 Difference]: Start difference. First operand 818 states and 1177 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:25,081 INFO L93 Difference]: Finished difference Result 1605 states and 2312 transitions. [2024-11-20 01:58:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 01:58:25,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2024-11-20 01:58:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:25,085 INFO L225 Difference]: With dead ends: 1605 [2024-11-20 01:58:25,085 INFO L226 Difference]: Without dead ends: 838 [2024-11-20 01:58:25,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:25,087 INFO L432 NwaCegarLoop]: 432 mSDtfsCounter, 5 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:25,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2575 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 01:58:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2024-11-20 01:58:25,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2024-11-20 01:58:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.4372759856630823) internal successors, (1203), 837 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:25,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1203 transitions. [2024-11-20 01:58:25,102 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1203 transitions. Word has length 175 [2024-11-20 01:58:25,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:25,102 INFO L471 AbstractCegarLoop]: Abstraction has 838 states and 1203 transitions. [2024-11-20 01:58:25,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:25,102 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1203 transitions. [2024-11-20 01:58:25,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-20 01:58:25,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:25,104 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:25,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 01:58:25,105 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:25,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:25,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1070789959, now seen corresponding path program 1 times [2024-11-20 01:58:25,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:25,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392764745] [2024-11-20 01:58:25,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:25,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:25,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:25,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392764745] [2024-11-20 01:58:25,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392764745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:25,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:25,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:58:25,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672469345] [2024-11-20 01:58:25,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:25,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:58:25,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:25,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:58:25,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:58:25,481 INFO L87 Difference]: Start difference. First operand 838 states and 1203 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:25,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:25,550 INFO L93 Difference]: Finished difference Result 1353 states and 1950 transitions. [2024-11-20 01:58:25,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:58:25,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2024-11-20 01:58:25,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:25,553 INFO L225 Difference]: With dead ends: 1353 [2024-11-20 01:58:25,553 INFO L226 Difference]: Without dead ends: 828 [2024-11-20 01:58:25,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:25,556 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 1053 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:25,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1275 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 01:58:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2024-11-20 01:58:25,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2024-11-20 01:58:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 1.4353083434099154) internal successors, (1187), 827 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1187 transitions. [2024-11-20 01:58:25,573 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1187 transitions. Word has length 175 [2024-11-20 01:58:25,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:25,573 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 1187 transitions. [2024-11-20 01:58:25,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:25,574 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1187 transitions. [2024-11-20 01:58:25,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-20 01:58:25,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:25,576 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:25,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-20 01:58:25,576 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:25,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:25,577 INFO L85 PathProgramCache]: Analyzing trace with hash -99283010, now seen corresponding path program 1 times [2024-11-20 01:58:25,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:25,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274850674] [2024-11-20 01:58:25,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:25,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:25,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274850674] [2024-11-20 01:58:25,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274850674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:25,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:25,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:58:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931093910] [2024-11-20 01:58:25,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:25,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:58:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:58:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:58:25,890 INFO L87 Difference]: Start difference. First operand 828 states and 1187 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:25,964 INFO L93 Difference]: Finished difference Result 1597 states and 2292 transitions. [2024-11-20 01:58:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:58:25,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2024-11-20 01:58:25,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:25,967 INFO L225 Difference]: With dead ends: 1597 [2024-11-20 01:58:25,968 INFO L226 Difference]: Without dead ends: 825 [2024-11-20 01:58:25,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:25,969 INFO L432 NwaCegarLoop]: 427 mSDtfsCounter, 1071 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:25,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1276 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 01:58:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2024-11-20 01:58:25,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2024-11-20 01:58:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 824 states have (on average 1.433252427184466) internal successors, (1181), 824 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:25,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1181 transitions. [2024-11-20 01:58:25,980 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1181 transitions. Word has length 176 [2024-11-20 01:58:25,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:25,981 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 1181 transitions. [2024-11-20 01:58:25,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:25,981 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1181 transitions. [2024-11-20 01:58:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-20 01:58:25,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:25,983 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:25,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-20 01:58:25,983 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:25,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash -571668603, now seen corresponding path program 1 times [2024-11-20 01:58:25,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:25,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513577486] [2024-11-20 01:58:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:25,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:26,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:26,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513577486] [2024-11-20 01:58:26,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513577486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:26,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:26,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 01:58:26,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352683318] [2024-11-20 01:58:26,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:26,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 01:58:26,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 01:58:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 01:58:26,264 INFO L87 Difference]: Start difference. First operand 825 states and 1181 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:26,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:26,337 INFO L93 Difference]: Finished difference Result 1344 states and 1932 transitions. [2024-11-20 01:58:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 01:58:26,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2024-11-20 01:58:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:26,339 INFO L225 Difference]: With dead ends: 1344 [2024-11-20 01:58:26,340 INFO L226 Difference]: Without dead ends: 571 [2024-11-20 01:58:26,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:26,341 INFO L432 NwaCegarLoop]: 425 mSDtfsCounter, 1097 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:26,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 1269 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:26,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-11-20 01:58:26,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2024-11-20 01:58:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 570 states have (on average 1.4403508771929825) internal successors, (821), 570 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 821 transitions. [2024-11-20 01:58:26,349 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 821 transitions. Word has length 176 [2024-11-20 01:58:26,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:26,349 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 821 transitions. [2024-11-20 01:58:26,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:26,350 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 821 transitions. [2024-11-20 01:58:26,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-20 01:58:26,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:26,351 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:26,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-20 01:58:26,352 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:26,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1172625233, now seen corresponding path program 1 times [2024-11-20 01:58:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:26,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205943482] [2024-11-20 01:58:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:29,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:29,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205943482] [2024-11-20 01:58:29,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205943482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:29,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:29,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-20 01:58:29,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294293897] [2024-11-20 01:58:29,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:29,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 01:58:29,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:29,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 01:58:29,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-20 01:58:29,024 INFO L87 Difference]: Start difference. First operand 571 states and 821 transitions. Second operand has 9 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:29,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:29,436 INFO L93 Difference]: Finished difference Result 1779 states and 2598 transitions. [2024-11-20 01:58:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 01:58:29,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 0 states have call successors, (0), 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 303 [2024-11-20 01:58:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:29,442 INFO L225 Difference]: With dead ends: 1779 [2024-11-20 01:58:29,442 INFO L226 Difference]: Without dead ends: 1509 [2024-11-20 01:58:29,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-20 01:58:29,444 INFO L432 NwaCegarLoop]: 698 mSDtfsCounter, 1490 mSDsluCounter, 3782 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 4480 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:29,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 4480 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 01:58:29,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-20 01:58:29,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1064. [2024-11-20 01:58:29,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1063 states have (on average 1.4459078080903105) internal successors, (1537), 1063 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1537 transitions. [2024-11-20 01:58:29,468 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1537 transitions. Word has length 303 [2024-11-20 01:58:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:29,469 INFO L471 AbstractCegarLoop]: Abstraction has 1064 states and 1537 transitions. [2024-11-20 01:58:29,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1537 transitions. [2024-11-20 01:58:29,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-20 01:58:29,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:29,472 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:29,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-20 01:58:29,474 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:29,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1079874154, now seen corresponding path program 1 times [2024-11-20 01:58:29,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:29,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332850442] [2024-11-20 01:58:29,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:29,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:30,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332850442] [2024-11-20 01:58:30,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332850442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:30,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:30,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 01:58:30,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583402389] [2024-11-20 01:58:30,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:30,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:30,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:30,946 INFO L87 Difference]: Start difference. First operand 1064 states and 1537 transitions. Second operand has 7 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:31,321 INFO L93 Difference]: Finished difference Result 2076 states and 3036 transitions. [2024-11-20 01:58:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 01:58:31,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 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 304 [2024-11-20 01:58:31,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:31,326 INFO L225 Difference]: With dead ends: 2076 [2024-11-20 01:58:31,327 INFO L226 Difference]: Without dead ends: 1542 [2024-11-20 01:58:31,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 01:58:31,328 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 1335 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:31,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 3230 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 01:58:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2024-11-20 01:58:31,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1087. [2024-11-20 01:58:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 1086 states have (on average 1.4410681399631675) internal successors, (1565), 1086 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1565 transitions. [2024-11-20 01:58:31,347 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1565 transitions. Word has length 304 [2024-11-20 01:58:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:31,347 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1565 transitions. [2024-11-20 01:58:31,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.42857142857143) internal successors, (304), 7 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:31,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1565 transitions. [2024-11-20 01:58:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-20 01:58:31,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:31,351 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:31,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-20 01:58:31,352 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:31,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1194745680, now seen corresponding path program 1 times [2024-11-20 01:58:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:31,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830820332] [2024-11-20 01:58:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:31,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-20 01:58:32,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830820332] [2024-11-20 01:58:32,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830820332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:32,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:32,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 01:58:32,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438157530] [2024-11-20 01:58:32,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:32,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:32,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:32,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:32,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:32,608 INFO L87 Difference]: Start difference. First operand 1087 states and 1565 transitions. Second operand has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:32,739 INFO L93 Difference]: Finished difference Result 1882 states and 2721 transitions. [2024-11-20 01:58:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 01:58:32,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 0 states have call successors, (0), 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 304 [2024-11-20 01:58:32,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:32,743 INFO L225 Difference]: With dead ends: 1882 [2024-11-20 01:58:32,743 INFO L226 Difference]: Without dead ends: 852 [2024-11-20 01:58:32,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-20 01:58:32,745 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 1001 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:32,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 2107 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-11-20 01:58:32,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2024-11-20 01:58:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.4441833137485312) internal successors, (1229), 851 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1229 transitions. [2024-11-20 01:58:32,757 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1229 transitions. Word has length 304 [2024-11-20 01:58:32,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:32,758 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1229 transitions. [2024-11-20 01:58:32,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:32,758 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1229 transitions. [2024-11-20 01:58:32,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-11-20 01:58:32,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:32,760 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:32,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-20 01:58:32,761 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:32,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:32,761 INFO L85 PathProgramCache]: Analyzing trace with hash 639038299, now seen corresponding path program 1 times [2024-11-20 01:58:32,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:32,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569016137] [2024-11-20 01:58:32,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:32,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:34,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:34,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569016137] [2024-11-20 01:58:34,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569016137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 01:58:34,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 01:58:34,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 01:58:34,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882420830] [2024-11-20 01:58:34,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:34,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:34,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:34,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:34,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 01:58:34,810 INFO L87 Difference]: Start difference. First operand 852 states and 1229 transitions. Second operand has 7 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:35,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:35,083 INFO L93 Difference]: Finished difference Result 1864 states and 2728 transitions. [2024-11-20 01:58:35,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 01:58:35,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 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 305 [2024-11-20 01:58:35,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:35,088 INFO L225 Difference]: With dead ends: 1864 [2024-11-20 01:58:35,089 INFO L226 Difference]: Without dead ends: 1310 [2024-11-20 01:58:35,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 01:58:35,090 INFO L432 NwaCegarLoop]: 691 mSDtfsCounter, 1850 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:35,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1850 Valid, 2830 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 01:58:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2024-11-20 01:58:35,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 853. [2024-11-20 01:58:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 1.442488262910798) internal successors, (1229), 852 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1229 transitions. [2024-11-20 01:58:35,107 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1229 transitions. Word has length 305 [2024-11-20 01:58:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:35,108 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1229 transitions. [2024-11-20 01:58:35,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 43.57142857142857) internal successors, (305), 7 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1229 transitions. [2024-11-20 01:58:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-20 01:58:35,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:35,111 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:35,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-20 01:58:35,112 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:35,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:35,112 INFO L85 PathProgramCache]: Analyzing trace with hash 291257767, now seen corresponding path program 1 times [2024-11-20 01:58:35,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:35,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557570318] [2024-11-20 01:58:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:35,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 119 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:40,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:40,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557570318] [2024-11-20 01:58:40,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557570318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 01:58:40,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322469783] [2024-11-20 01:58:40,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:40,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 01:58:40,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 01:58:40,017 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) [2024-11-20 01:58:40,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 01:58:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:40,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-20 01:58:40,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 01:58:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 99 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:42,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 01:58:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 93 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:44,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322469783] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 01:58:44,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 01:58:44,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 17] total 40 [2024-11-20 01:58:44,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012876649] [2024-11-20 01:58:44,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 01:58:44,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-20 01:58:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:44,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-20 01:58:44,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1385, Unknown=0, NotChecked=0, Total=1560 [2024-11-20 01:58:44,262 INFO L87 Difference]: Start difference. First operand 853 states and 1229 transitions. Second operand has 40 states, 40 states have (on average 20.425) internal successors, (817), 40 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:47,790 INFO L93 Difference]: Finished difference Result 3866 states and 5699 transitions. [2024-11-20 01:58:47,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-20 01:58:47,791 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 20.425) internal successors, (817), 40 states have internal predecessors, (817), 0 states have call successors, (0), 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 306 [2024-11-20 01:58:47,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:47,800 INFO L225 Difference]: With dead ends: 3866 [2024-11-20 01:58:47,800 INFO L226 Difference]: Without dead ends: 3311 [2024-11-20 01:58:47,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 589 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1018, Invalid=6992, Unknown=0, NotChecked=0, Total=8010 [2024-11-20 01:58:47,803 INFO L432 NwaCegarLoop]: 635 mSDtfsCounter, 7491 mSDsluCounter, 14275 mSDsCounter, 0 mSdLazyCounter, 3138 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7491 SdHoareTripleChecker+Valid, 14910 SdHoareTripleChecker+Invalid, 3167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:47,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7491 Valid, 14910 Invalid, 3167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3138 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-20 01:58:47,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2024-11-20 01:58:47,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 1541. [2024-11-20 01:58:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1541 states, 1540 states have (on average 1.4493506493506494) internal successors, (2232), 1540 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:47,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1541 states to 1541 states and 2232 transitions. [2024-11-20 01:58:47,856 INFO L78 Accepts]: Start accepts. Automaton has 1541 states and 2232 transitions. Word has length 306 [2024-11-20 01:58:47,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:47,858 INFO L471 AbstractCegarLoop]: Abstraction has 1541 states and 2232 transitions. [2024-11-20 01:58:47,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 20.425) internal successors, (817), 40 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:47,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states and 2232 transitions. [2024-11-20 01:58:47,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-20 01:58:47,861 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:47,861 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:47,874 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 01:58:48,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 01:58:48,062 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:48,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:48,063 INFO L85 PathProgramCache]: Analyzing trace with hash -478327234, now seen corresponding path program 1 times [2024-11-20 01:58:48,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:48,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575165145] [2024-11-20 01:58:48,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:48,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 106 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:51,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 01:58:51,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575165145] [2024-11-20 01:58:51,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575165145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 01:58:51,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093818028] [2024-11-20 01:58:51,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:51,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 01:58:51,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 01:58:51,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 01:58:51,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 01:58:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 01:58:52,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 2017 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-20 01:58:52,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 01:58:53,596 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 29 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 01:58:53,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 01:58:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-20 01:58:54,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093818028] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-20 01:58:54,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-20 01:58:54,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 17] total 30 [2024-11-20 01:58:54,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477985998] [2024-11-20 01:58:54,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 01:58:54,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 01:58:54,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 01:58:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 01:58:54,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2024-11-20 01:58:54,068 INFO L87 Difference]: Start difference. First operand 1541 states and 2232 transitions. Second operand has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:54,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 01:58:54,232 INFO L93 Difference]: Finished difference Result 4120 states and 6036 transitions. [2024-11-20 01:58:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 01:58:54,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 309 [2024-11-20 01:58:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 01:58:54,242 INFO L225 Difference]: With dead ends: 4120 [2024-11-20 01:58:54,242 INFO L226 Difference]: Without dead ends: 3029 [2024-11-20 01:58:54,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2024-11-20 01:58:54,245 INFO L432 NwaCegarLoop]: 915 mSDtfsCounter, 564 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 3352 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 01:58:54,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 3352 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 01:58:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2024-11-20 01:58:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2045. [2024-11-20 01:58:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 2044 states have (on average 1.4589041095890412) internal successors, (2982), 2044 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2982 transitions. [2024-11-20 01:58:54,291 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2982 transitions. Word has length 309 [2024-11-20 01:58:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 01:58:54,292 INFO L471 AbstractCegarLoop]: Abstraction has 2045 states and 2982 transitions. [2024-11-20 01:58:54,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.42857142857143) internal successors, (290), 7 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 01:58:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2982 transitions. [2024-11-20 01:58:54,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-20 01:58:54,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 01:58:54,301 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 01:58:54,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 01:58:54,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 01:58:54,502 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 01:58:54,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 01:58:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1374868354, now seen corresponding path program 1 times [2024-11-20 01:58:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 01:58:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528505732] [2024-11-20 01:58:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 01:58:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 01:58:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat