./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label28.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/eca-rers2012/Problem17_label28.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9f11574ad30fc17c07131211bf5f95490e2bdab1a5c8ef6b6afc80480ba8e82 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 22:32:17,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 22:32:17,535 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 22:32:17,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 22:32:17,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 22:32:17,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 22:32:17,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 22:32:17,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 22:32:17,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 22:32:17,583 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 22:32:17,584 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 22:32:17,584 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 22:32:17,585 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 22:32:17,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 22:32:17,587 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 22:32:17,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 22:32:17,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 22:32:17,588 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 22:32:17,589 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 22:32:17,589 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 22:32:17,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 22:32:17,590 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 22:32:17,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 22:32:17,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 22:32:17,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 22:32:17,591 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 22:32:17,591 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 22:32:17,591 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 22:32:17,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 22:32:17,592 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 22:32:17,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 22:32:17,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 22:32:17,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:32:17,593 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 22:32:17,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 22:32:17,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 22:32:17,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 22:32:17,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 22:32:17,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 22:32:17,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 22:32:17,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 22:32:17,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 22:32:17,596 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9f11574ad30fc17c07131211bf5f95490e2bdab1a5c8ef6b6afc80480ba8e82 [2024-11-21 22:32:17,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 22:32:17,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 22:32:17,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 22:32:17,862 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 22:32:17,863 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 22:32:17,864 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label28.c [2024-11-21 22:32:19,405 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 22:32:19,773 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 22:32:19,773 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label28.c [2024-11-21 22:32:19,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dfc56778/f36dccc3d777403ebf4fb6523cbbab0f/FLAG473fd0a7e [2024-11-21 22:32:19,825 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3dfc56778/f36dccc3d777403ebf4fb6523cbbab0f [2024-11-21 22:32:19,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 22:32:19,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 22:32:19,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 22:32:19,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 22:32:19,839 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 22:32:19,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:32:19" (1/1) ... [2024-11-21 22:32:19,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a72ee1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:19, skipping insertion in model container [2024-11-21 22:32:19,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:32:19" (1/1) ... [2024-11-21 22:32:19,937 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 22:32:20,238 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label28.c[9518,9531] [2024-11-21 22:32:20,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:32:20,683 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 22:32:20,713 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label28.c[9518,9531] [2024-11-21 22:32:20,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 22:32:21,000 INFO L204 MainTranslator]: Completed translation [2024-11-21 22:32:21,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21 WrapperNode [2024-11-21 22:32:21,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 22:32:21,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 22:32:21,002 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 22:32:21,002 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 22:32:21,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,295 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2024-11-21 22:32:21,296 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 22:32:21,297 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 22:32:21,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 22:32:21,297 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 22:32:21,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,543 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]. [2024-11-21 22:32:21,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,870 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 22:32:21,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 22:32:21,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 22:32:21,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 22:32:21,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (1/1) ... [2024-11-21 22:32:21,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 22:32:21,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:32:21,909 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) [2024-11-21 22:32:21,912 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 [2024-11-21 22:32:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 22:32:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 22:32:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 22:32:21,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 22:32:22,009 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 22:32:22,010 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 22:32:25,290 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-21 22:32:25,290 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 22:32:25,316 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 22:32:25,316 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-21 22:32:25,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:32:25 BoogieIcfgContainer [2024-11-21 22:32:25,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 22:32:25,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 22:32:25,319 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 22:32:25,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 22:32:25,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:32:19" (1/3) ... [2024-11-21 22:32:25,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e6c3d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:32:25, skipping insertion in model container [2024-11-21 22:32:25,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:32:21" (2/3) ... [2024-11-21 22:32:25,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e6c3d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:32:25, skipping insertion in model container [2024-11-21 22:32:25,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:32:25" (3/3) ... [2024-11-21 22:32:25,328 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label28.c [2024-11-21 22:32:25,346 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 22:32:25,346 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 22:32:25,447 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 22:32:25,456 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;@e3572a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 22:32:25,457 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 22:32:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-21 22:32:25,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:25,477 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:25,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:25,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:25,483 INFO L85 PathProgramCache]: Analyzing trace with hash -107486446, now seen corresponding path program 1 times [2024-11-21 22:32:25,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:25,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903461795] [2024-11-21 22:32:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:25,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:32:25,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:25,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903461795] [2024-11-21 22:32:25,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903461795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:25,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:25,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:32:25,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968272836] [2024-11-21 22:32:25,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:25,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:25,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:25,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:25,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:26,001 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:28,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:28,474 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2024-11-21 22:32:28,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:28,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-11-21 22:32:28,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:28,495 INFO L225 Difference]: With dead ends: 1642 [2024-11-21 22:32:28,495 INFO L226 Difference]: Without dead ends: 975 [2024-11-21 22:32:28,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:28,504 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 426 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:28,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-21 22:32:28,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-11-21 22:32:28,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2024-11-21 22:32:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2024-11-21 22:32:28,634 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 64 [2024-11-21 22:32:28,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:28,635 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2024-11-21 22:32:28,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2024-11-21 22:32:28,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-21 22:32:28,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:28,642 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:28,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 22:32:28,643 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:28,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:28,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1987590722, now seen corresponding path program 1 times [2024-11-21 22:32:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:28,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974801099] [2024-11-21 22:32:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:28,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:32:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:29,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974801099] [2024-11-21 22:32:29,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974801099] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:29,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:29,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:29,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901091193] [2024-11-21 22:32:29,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:29,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:29,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:29,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:29,033 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:31,099 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2024-11-21 22:32:31,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:31,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2024-11-21 22:32:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:31,108 INFO L225 Difference]: With dead ends: 2814 [2024-11-21 22:32:31,109 INFO L226 Difference]: Without dead ends: 1844 [2024-11-21 22:32:31,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:31,114 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 427 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:31,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:32:31,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-21 22:32:31,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2024-11-21 22:32:31,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:31,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2024-11-21 22:32:31,174 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 134 [2024-11-21 22:32:31,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:31,176 INFO L471 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2024-11-21 22:32:31,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:31,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2024-11-21 22:32:31,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-21 22:32:31,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:31,183 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:31,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-21 22:32:31,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:31,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash -158774367, now seen corresponding path program 1 times [2024-11-21 22:32:31,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:31,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012017167] [2024-11-21 22:32:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:31,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:32:31,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:31,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012017167] [2024-11-21 22:32:31,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012017167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:31,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:31,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-21 22:32:31,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088994352] [2024-11-21 22:32:31,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:31,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:31,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:31,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:31,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:31,457 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:33,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:33,378 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2024-11-21 22:32:33,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:33,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2024-11-21 22:32:33,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:33,388 INFO L225 Difference]: With dead ends: 5395 [2024-11-21 22:32:33,388 INFO L226 Difference]: Without dead ends: 2701 [2024-11-21 22:32:33,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:33,394 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:33,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-21 22:32:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2024-11-21 22:32:33,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2024-11-21 22:32:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2024-11-21 22:32:33,440 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 156 [2024-11-21 22:32:33,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:33,441 INFO L471 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2024-11-21 22:32:33,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2024-11-21 22:32:33,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-21 22:32:33,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:33,444 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:33,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-21 22:32:33,445 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:33,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:33,446 INFO L85 PathProgramCache]: Analyzing trace with hash -175097035, now seen corresponding path program 1 times [2024-11-21 22:32:33,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:33,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551243983] [2024-11-21 22:32:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:33,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:32:33,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:33,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551243983] [2024-11-21 22:32:33,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551243983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:33,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:33,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:33,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883280838] [2024-11-21 22:32:33,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:33,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:33,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:33,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:33,757 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:35,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:35,329 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2024-11-21 22:32:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:35,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-21 22:32:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:35,345 INFO L225 Difference]: With dead ends: 7108 [2024-11-21 22:32:35,345 INFO L226 Difference]: Without dead ends: 4409 [2024-11-21 22:32:35,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:35,351 INFO L432 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:35,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-21 22:32:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2024-11-21 22:32:35,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2024-11-21 22:32:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:35,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2024-11-21 22:32:35,422 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 216 [2024-11-21 22:32:35,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:35,422 INFO L471 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2024-11-21 22:32:35,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:35,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2024-11-21 22:32:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2024-11-21 22:32:35,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:35,426 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:35,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-21 22:32:35,426 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:35,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:35,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1176466000, now seen corresponding path program 1 times [2024-11-21 22:32:35,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:35,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378015848] [2024-11-21 22:32:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:35,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-21 22:32:35,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:35,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378015848] [2024-11-21 22:32:35,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378015848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:35,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:35,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:35,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4812197] [2024-11-21 22:32:35,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:35,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:35,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:35,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:35,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:35,689 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:37,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:37,422 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2024-11-21 22:32:37,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:37,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2024-11-21 22:32:37,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:37,445 INFO L225 Difference]: With dead ends: 10936 [2024-11-21 22:32:37,445 INFO L226 Difference]: Without dead ends: 6528 [2024-11-21 22:32:37,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:37,453 INFO L432 NwaCegarLoop]: 382 mSDtfsCounter, 387 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:37,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-21 22:32:37,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2024-11-21 22:32:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2024-11-21 22:32:37,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2024-11-21 22:32:37,552 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 218 [2024-11-21 22:32:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:37,554 INFO L471 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2024-11-21 22:32:37,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2024-11-21 22:32:37,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-21 22:32:37,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:37,559 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:37,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-21 22:32:37,560 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:37,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1033656950, now seen corresponding path program 1 times [2024-11-21 22:32:37,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:37,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064734870] [2024-11-21 22:32:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:37,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-21 22:32:37,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:37,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064734870] [2024-11-21 22:32:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064734870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:37,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:37,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:37,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447560680] [2024-11-21 22:32:37,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:37,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:37,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:37,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:37,879 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:39,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:39,590 INFO L93 Difference]: Finished difference Result 10045 states and 11706 transitions. [2024-11-21 22:32:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:39,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 284 [2024-11-21 22:32:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:39,613 INFO L225 Difference]: With dead ends: 10045 [2024-11-21 22:32:39,614 INFO L226 Difference]: Without dead ends: 5665 [2024-11-21 22:32:39,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:39,623 INFO L432 NwaCegarLoop]: 833 mSDtfsCounter, 372 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:39,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 894 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-21 22:32:39,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5665 states. [2024-11-21 22:32:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5665 to 5234. [2024-11-21 22:32:39,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5234 states, 5233 states have (on average 1.1587999235620103) internal successors, (6064), 5233 states have internal predecessors, (6064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 6064 transitions. [2024-11-21 22:32:39,722 INFO L78 Accepts]: Start accepts. Automaton has 5234 states and 6064 transitions. Word has length 284 [2024-11-21 22:32:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:39,723 INFO L471 AbstractCegarLoop]: Abstraction has 5234 states and 6064 transitions. [2024-11-21 22:32:39,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5234 states and 6064 transitions. [2024-11-21 22:32:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-21 22:32:39,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:39,729 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:39,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-21 22:32:39,730 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:39,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash -639503021, now seen corresponding path program 1 times [2024-11-21 22:32:39,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:39,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797725467] [2024-11-21 22:32:39,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:39,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-21 22:32:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797725467] [2024-11-21 22:32:40,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797725467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:40,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:40,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206357585] [2024-11-21 22:32:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:40,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:40,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:40,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:40,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:40,042 INFO L87 Difference]: Start difference. First operand 5234 states and 6064 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:41,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:41,667 INFO L93 Difference]: Finished difference Result 12593 states and 14783 transitions. [2024-11-21 22:32:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:41,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 296 [2024-11-21 22:32:41,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:41,688 INFO L225 Difference]: With dead ends: 12593 [2024-11-21 22:32:41,688 INFO L226 Difference]: Without dead ends: 6936 [2024-11-21 22:32:41,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:41,697 INFO L432 NwaCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:41,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-21 22:32:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6936 states. [2024-11-21 22:32:41,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6936 to 6936. [2024-11-21 22:32:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6936 states, 6935 states have (on average 1.1322278298485942) internal successors, (7852), 6935 states have internal predecessors, (7852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 7852 transitions. [2024-11-21 22:32:41,817 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 7852 transitions. Word has length 296 [2024-11-21 22:32:41,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:41,817 INFO L471 AbstractCegarLoop]: Abstraction has 6936 states and 7852 transitions. [2024-11-21 22:32:41,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:41,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 7852 transitions. [2024-11-21 22:32:41,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-11-21 22:32:41,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:41,823 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:41,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 22:32:41,824 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:41,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash -435453770, now seen corresponding path program 1 times [2024-11-21 22:32:41,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:41,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666752253] [2024-11-21 22:32:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-21 22:32:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666752253] [2024-11-21 22:32:42,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666752253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:42,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:42,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897963522] [2024-11-21 22:32:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:42,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:42,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:42,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:42,114 INFO L87 Difference]: Start difference. First operand 6936 states and 7852 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 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) [2024-11-21 22:32:43,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:43,735 INFO L93 Difference]: Finished difference Result 17279 states and 19683 transitions. [2024-11-21 22:32:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:43,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 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 336 [2024-11-21 22:32:43,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:43,754 INFO L225 Difference]: With dead ends: 17279 [2024-11-21 22:32:43,754 INFO L226 Difference]: Without dead ends: 9468 [2024-11-21 22:32:43,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:43,764 INFO L432 NwaCegarLoop]: 610 mSDtfsCounter, 481 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:43,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 640 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-21 22:32:43,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9468 states. [2024-11-21 22:32:43,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9468 to 9038. [2024-11-21 22:32:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9038 states, 9037 states have (on average 1.1249308398804914) internal successors, (10166), 9037 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:43,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9038 states to 9038 states and 10166 transitions. [2024-11-21 22:32:43,900 INFO L78 Accepts]: Start accepts. Automaton has 9038 states and 10166 transitions. Word has length 336 [2024-11-21 22:32:43,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:43,900 INFO L471 AbstractCegarLoop]: Abstraction has 9038 states and 10166 transitions. [2024-11-21 22:32:43,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 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) [2024-11-21 22:32:43,901 INFO L276 IsEmpty]: Start isEmpty. Operand 9038 states and 10166 transitions. [2024-11-21 22:32:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-21 22:32:43,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:43,910 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:43,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-21 22:32:43,911 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:43,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:43,911 INFO L85 PathProgramCache]: Analyzing trace with hash 292616392, now seen corresponding path program 1 times [2024-11-21 22:32:43,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:43,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350203645] [2024-11-21 22:32:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:43,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:43,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:32:44,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:44,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350203645] [2024-11-21 22:32:44,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350203645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:44,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:44,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:44,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597842562] [2024-11-21 22:32:44,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:44,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:32:44,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:44,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:32:44,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:32:44,358 INFO L87 Difference]: Start difference. First operand 9038 states and 10166 transitions. Second operand has 4 states, 4 states have (on average 100.75) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:46,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:46,746 INFO L93 Difference]: Finished difference Result 26190 states and 29348 transitions. [2024-11-21 22:32:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:32:46,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 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 403 [2024-11-21 22:32:46,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:46,781 INFO L225 Difference]: With dead ends: 26190 [2024-11-21 22:32:46,781 INFO L226 Difference]: Without dead ends: 16729 [2024-11-21 22:32:46,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:32:46,795 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 507 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:46,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 373 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-21 22:32:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16729 states. [2024-11-21 22:32:47,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16729 to 16708. [2024-11-21 22:32:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16708 states, 16707 states have (on average 1.108277967319088) internal successors, (18516), 16707 states have internal predecessors, (18516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:47,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16708 states to 16708 states and 18516 transitions. [2024-11-21 22:32:47,080 INFO L78 Accepts]: Start accepts. Automaton has 16708 states and 18516 transitions. Word has length 403 [2024-11-21 22:32:47,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:47,081 INFO L471 AbstractCegarLoop]: Abstraction has 16708 states and 18516 transitions. [2024-11-21 22:32:47,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.75) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:47,082 INFO L276 IsEmpty]: Start isEmpty. Operand 16708 states and 18516 transitions. [2024-11-21 22:32:47,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-21 22:32:47,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:47,094 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-21 22:32:47,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-21 22:32:47,094 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:47,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:47,095 INFO L85 PathProgramCache]: Analyzing trace with hash 704539906, now seen corresponding path program 1 times [2024-11-21 22:32:47,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:47,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943154188] [2024-11-21 22:32:47,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:47,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-21 22:32:47,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:47,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943154188] [2024-11-21 22:32:47,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943154188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:47,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:47,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:47,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785262660] [2024-11-21 22:32:47,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:47,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:47,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:47,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:47,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:47,337 INFO L87 Difference]: Start difference. First operand 16708 states and 18516 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:48,702 INFO L93 Difference]: Finished difference Result 36816 states and 41081 transitions. [2024-11-21 22:32:48,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:48,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 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 407 [2024-11-21 22:32:48,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:48,741 INFO L225 Difference]: With dead ends: 36816 [2024-11-21 22:32:48,742 INFO L226 Difference]: Without dead ends: 20110 [2024-11-21 22:32:48,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:48,757 INFO L432 NwaCegarLoop]: 260 mSDtfsCounter, 415 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:48,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 299 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-21 22:32:48,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20110 states. [2024-11-21 22:32:49,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20110 to 18831. [2024-11-21 22:32:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18831 states, 18830 states have (on average 1.1070100902814657) internal successors, (20845), 18830 states have internal predecessors, (20845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18831 states to 18831 states and 20845 transitions. [2024-11-21 22:32:49,058 INFO L78 Accepts]: Start accepts. Automaton has 18831 states and 20845 transitions. Word has length 407 [2024-11-21 22:32:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:49,059 INFO L471 AbstractCegarLoop]: Abstraction has 18831 states and 20845 transitions. [2024-11-21 22:32:49,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:49,060 INFO L276 IsEmpty]: Start isEmpty. Operand 18831 states and 20845 transitions. [2024-11-21 22:32:49,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2024-11-21 22:32:49,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:49,089 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:49,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-21 22:32:49,089 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:49,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:49,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1668251932, now seen corresponding path program 1 times [2024-11-21 22:32:49,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:49,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893957816] [2024-11-21 22:32:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:49,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 342 proven. 82 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-21 22:32:49,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:49,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893957816] [2024-11-21 22:32:49,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893957816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:32:49,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384289766] [2024-11-21 22:32:49,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:49,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:32:49,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:32:49,975 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) [2024-11-21 22:32:49,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 22:32:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:50,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 22:32:50,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:32:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-21 22:32:50,754 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 22:32:50,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384289766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:50,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 22:32:50,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2024-11-21 22:32:50,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248441572] [2024-11-21 22:32:50,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:50,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:32:50,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:50,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:32:50,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:32:50,757 INFO L87 Difference]: Start difference. First operand 18831 states and 20845 transitions. Second operand has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:53,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:53,356 INFO L93 Difference]: Finished difference Result 55572 states and 61843 transitions. [2024-11-21 22:32:53,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:32:53,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 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 623 [2024-11-21 22:32:53,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:53,425 INFO L225 Difference]: With dead ends: 55572 [2024-11-21 22:32:53,425 INFO L226 Difference]: Without dead ends: 35039 [2024-11-21 22:32:53,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 621 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:32:53,446 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 575 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 2997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:53,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 219 Invalid, 2997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 2528 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-21 22:32:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35039 states. [2024-11-21 22:32:53,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35039 to 33305. [2024-11-21 22:32:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33305 states, 33304 states have (on average 1.110377131876051) internal successors, (36980), 33304 states have internal predecessors, (36980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:53,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33305 states to 33305 states and 36980 transitions. [2024-11-21 22:32:53,857 INFO L78 Accepts]: Start accepts. Automaton has 33305 states and 36980 transitions. Word has length 623 [2024-11-21 22:32:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:53,857 INFO L471 AbstractCegarLoop]: Abstraction has 33305 states and 36980 transitions. [2024-11-21 22:32:53,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:53,858 INFO L276 IsEmpty]: Start isEmpty. Operand 33305 states and 36980 transitions. [2024-11-21 22:32:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2024-11-21 22:32:53,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:53,890 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:53,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 22:32:54,091 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,SelfDestructingSolverStorable10 [2024-11-21 22:32:54,092 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:54,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1349727723, now seen corresponding path program 1 times [2024-11-21 22:32:54,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:54,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331319244] [2024-11-21 22:32:54,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:54,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 372 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-21 22:32:54,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:54,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331319244] [2024-11-21 22:32:54,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331319244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:54,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:54,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:54,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495313025] [2024-11-21 22:32:54,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:54,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:54,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:54,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:54,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:54,810 INFO L87 Difference]: Start difference. First operand 33305 states and 36980 transitions. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:56,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:56,433 INFO L93 Difference]: Finished difference Result 79380 states and 88473 transitions. [2024-11-21 22:32:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:56,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 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 667 [2024-11-21 22:32:56,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:56,499 INFO L225 Difference]: With dead ends: 79380 [2024-11-21 22:32:56,499 INFO L226 Difference]: Without dead ends: 45220 [2024-11-21 22:32:56,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:56,534 INFO L432 NwaCegarLoop]: 604 mSDtfsCounter, 102 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:56,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 642 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-21 22:32:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45220 states. [2024-11-21 22:32:56,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45220 to 44787. [2024-11-21 22:32:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44787 states, 44786 states have (on average 1.1031795650426472) internal successors, (49407), 44786 states have internal predecessors, (49407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44787 states to 44787 states and 49407 transitions. [2024-11-21 22:32:57,028 INFO L78 Accepts]: Start accepts. Automaton has 44787 states and 49407 transitions. Word has length 667 [2024-11-21 22:32:57,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:57,029 INFO L471 AbstractCegarLoop]: Abstraction has 44787 states and 49407 transitions. [2024-11-21 22:32:57,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:57,029 INFO L276 IsEmpty]: Start isEmpty. Operand 44787 states and 49407 transitions. [2024-11-21 22:32:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2024-11-21 22:32:57,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:57,063 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:57,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-21 22:32:57,064 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:57,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:57,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1592530397, now seen corresponding path program 1 times [2024-11-21 22:32:57,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:57,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53250317] [2024-11-21 22:32:57,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:57,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:32:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2024-11-21 22:32:57,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:32:57,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53250317] [2024-11-21 22:32:57,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53250317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:32:57,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:32:57,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:32:57,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422146965] [2024-11-21 22:32:57,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:32:57,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:32:57,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:32:57,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:32:57,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:57,502 INFO L87 Difference]: Start difference. First operand 44787 states and 49407 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:32:58,921 INFO L93 Difference]: Finished difference Result 98504 states and 109011 transitions. [2024-11-21 22:32:58,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:32:58,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 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 708 [2024-11-21 22:32:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:32:58,983 INFO L225 Difference]: With dead ends: 98504 [2024-11-21 22:32:58,983 INFO L226 Difference]: Without dead ends: 53719 [2024-11-21 22:32:59,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:32:59,017 INFO L432 NwaCegarLoop]: 632 mSDtfsCounter, 489 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:32:59,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 673 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-21 22:32:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53719 states. [2024-11-21 22:32:59,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53719 to 53713. [2024-11-21 22:32:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53713 states, 53712 states have (on average 1.0985440869824248) internal successors, (59005), 53712 states have internal predecessors, (59005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53713 states to 53713 states and 59005 transitions. [2024-11-21 22:32:59,734 INFO L78 Accepts]: Start accepts. Automaton has 53713 states and 59005 transitions. Word has length 708 [2024-11-21 22:32:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:32:59,735 INFO L471 AbstractCegarLoop]: Abstraction has 53713 states and 59005 transitions. [2024-11-21 22:32:59,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:32:59,735 INFO L276 IsEmpty]: Start isEmpty. Operand 53713 states and 59005 transitions. [2024-11-21 22:32:59,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2024-11-21 22:32:59,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:32:59,760 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:32:59,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-21 22:32:59,760 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:32:59,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:32:59,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1076104734, now seen corresponding path program 1 times [2024-11-21 22:32:59,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:32:59,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115187739] [2024-11-21 22:32:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:32:59,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:32:59,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:33:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2024-11-21 22:33:00,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:33:00,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115187739] [2024-11-21 22:33:00,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115187739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:33:00,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:33:00,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:33:00,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714054056] [2024-11-21 22:33:00,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:33:00,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:33:00,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:33:00,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:33:00,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:33:00,375 INFO L87 Difference]: Start difference. First operand 53713 states and 59005 transitions. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:33:02,107 INFO L93 Difference]: Finished difference Result 117221 states and 128793 transitions. [2024-11-21 22:33:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:33:02,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 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 717 [2024-11-21 22:33:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:33:02,178 INFO L225 Difference]: With dead ends: 117221 [2024-11-21 22:33:02,178 INFO L226 Difference]: Without dead ends: 63510 [2024-11-21 22:33:02,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:33:02,205 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 470 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-21 22:33:02,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 256 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-21 22:33:02,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63510 states. [2024-11-21 22:33:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63510 to 50722. [2024-11-21 22:33:02,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50722 states, 50721 states have (on average 1.1003134796238245) internal successors, (55809), 50721 states have internal predecessors, (55809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:03,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50722 states to 50722 states and 55809 transitions. [2024-11-21 22:33:03,008 INFO L78 Accepts]: Start accepts. Automaton has 50722 states and 55809 transitions. Word has length 717 [2024-11-21 22:33:03,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:33:03,008 INFO L471 AbstractCegarLoop]: Abstraction has 50722 states and 55809 transitions. [2024-11-21 22:33:03,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:03,009 INFO L276 IsEmpty]: Start isEmpty. Operand 50722 states and 55809 transitions. [2024-11-21 22:33:03,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2024-11-21 22:33:03,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:33:03,037 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:33:03,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-21 22:33:03,038 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:33:03,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:33:03,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1144017052, now seen corresponding path program 1 times [2024-11-21 22:33:03,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:33:03,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314429293] [2024-11-21 22:33:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:33:03,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:33:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:33:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 391 proven. 82 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-21 22:33:04,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:33:04,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314429293] [2024-11-21 22:33:04,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314429293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:33:04,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767917753] [2024-11-21 22:33:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:33:04,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:33:04,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:33:04,139 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) [2024-11-21 22:33:04,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 22:33:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:33:04,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-21 22:33:04,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:33:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 371 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:33:05,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:33:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 535 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 22:33:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767917753] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:33:06,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:33:06,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2024-11-21 22:33:06,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9536628] [2024-11-21 22:33:06,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:33:06,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-21 22:33:06,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:33:06,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-21 22:33:06,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-21 22:33:06,027 INFO L87 Difference]: Start difference. First operand 50722 states and 55809 transitions. Second operand has 5 states, 5 states have (on average 149.6) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:08,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:33:08,583 INFO L93 Difference]: Finished difference Result 112518 states and 123810 transitions. [2024-11-21 22:33:08,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:33:08,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 149.6) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 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 748 [2024-11-21 22:33:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:33:08,649 INFO L225 Difference]: With dead ends: 112518 [2024-11-21 22:33:08,649 INFO L226 Difference]: Without dead ends: 60948 [2024-11-21 22:33:08,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1497 GetRequests, 1491 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-21 22:33:08,659 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 482 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-21 22:33:08,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 150 Invalid, 3084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-21 22:33:08,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60948 states. [2024-11-21 22:33:09,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60948 to 50308. [2024-11-21 22:33:09,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 50307 states have (on average 1.0974218299640208) internal successors, (55208), 50307 states have internal predecessors, (55208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 55208 transitions. [2024-11-21 22:33:09,415 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 55208 transitions. Word has length 748 [2024-11-21 22:33:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:33:09,415 INFO L471 AbstractCegarLoop]: Abstraction has 50308 states and 55208 transitions. [2024-11-21 22:33:09,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.6) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 55208 transitions. [2024-11-21 22:33:09,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2024-11-21 22:33:09,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:33:09,447 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:33:09,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-21 22:33:09,647 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,SelfDestructingSolverStorable14 [2024-11-21 22:33:09,648 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:33:09,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:33:09,649 INFO L85 PathProgramCache]: Analyzing trace with hash -690683867, now seen corresponding path program 1 times [2024-11-21 22:33:09,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:33:09,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244114367] [2024-11-21 22:33:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:33:09,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:33:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:33:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 623 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-21 22:33:10,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:33:10,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244114367] [2024-11-21 22:33:10,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244114367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:33:10,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:33:10,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:33:10,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766001967] [2024-11-21 22:33:10,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:33:10,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:33:10,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:33:10,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:33:10,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:33:10,338 INFO L87 Difference]: Start difference. First operand 50308 states and 55208 transitions. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:12,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:33:12,008 INFO L93 Difference]: Finished difference Result 113813 states and 125096 transitions. [2024-11-21 22:33:12,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:33:12,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 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 764 [2024-11-21 22:33:12,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:33:12,077 INFO L225 Difference]: With dead ends: 113813 [2024-11-21 22:33:12,077 INFO L226 Difference]: Without dead ends: 63082 [2024-11-21 22:33:12,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:33:12,105 INFO L432 NwaCegarLoop]: 703 mSDtfsCounter, 322 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:33:12,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 751 Invalid, 1363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-21 22:33:12,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63082 states. [2024-11-21 22:33:12,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63082 to 60945. [2024-11-21 22:33:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60945 states, 60944 states have (on average 1.0912805198214754) internal successors, (66507), 60944 states have internal predecessors, (66507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60945 states to 60945 states and 66507 transitions. [2024-11-21 22:33:12,989 INFO L78 Accepts]: Start accepts. Automaton has 60945 states and 66507 transitions. Word has length 764 [2024-11-21 22:33:12,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:33:12,989 INFO L471 AbstractCegarLoop]: Abstraction has 60945 states and 66507 transitions. [2024-11-21 22:33:12,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:12,990 INFO L276 IsEmpty]: Start isEmpty. Operand 60945 states and 66507 transitions. [2024-11-21 22:33:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2024-11-21 22:33:13,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:33:13,021 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:33:13,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-21 22:33:13,021 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:33:13,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:33:13,022 INFO L85 PathProgramCache]: Analyzing trace with hash 351331225, now seen corresponding path program 1 times [2024-11-21 22:33:13,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:33:13,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735801321] [2024-11-21 22:33:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:33:13,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:33:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:33:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 520 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-21 22:33:13,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:33:13,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735801321] [2024-11-21 22:33:13,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735801321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:33:13,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:33:13,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 22:33:13,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68167692] [2024-11-21 22:33:13,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:33:13,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 22:33:13,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:33:13,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 22:33:13,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:33:13,715 INFO L87 Difference]: Start difference. First operand 60945 states and 66507 transitions. Second operand has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:15,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:33:15,348 INFO L93 Difference]: Finished difference Result 121881 states and 133005 transitions. [2024-11-21 22:33:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 22:33:15,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 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 842 [2024-11-21 22:33:15,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:33:15,418 INFO L225 Difference]: With dead ends: 121881 [2024-11-21 22:33:15,418 INFO L226 Difference]: Without dead ends: 60936 [2024-11-21 22:33:15,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 22:33:15,459 INFO L432 NwaCegarLoop]: 623 mSDtfsCounter, 112 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-21 22:33:15,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 675 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-21 22:33:15,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60936 states. [2024-11-21 22:33:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60936 to 59233. [2024-11-21 22:33:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59233 states, 59232 states have (on average 1.0702998379254458) internal successors, (63396), 59232 states have internal predecessors, (63396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59233 states to 59233 states and 63396 transitions. [2024-11-21 22:33:16,200 INFO L78 Accepts]: Start accepts. Automaton has 59233 states and 63396 transitions. Word has length 842 [2024-11-21 22:33:16,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:33:16,201 INFO L471 AbstractCegarLoop]: Abstraction has 59233 states and 63396 transitions. [2024-11-21 22:33:16,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:16,202 INFO L276 IsEmpty]: Start isEmpty. Operand 59233 states and 63396 transitions. [2024-11-21 22:33:16,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2024-11-21 22:33:16,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:33:16,476 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:33:16,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-21 22:33:16,476 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:33:16,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:33:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash 145398418, now seen corresponding path program 1 times [2024-11-21 22:33:16,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:33:16,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726490599] [2024-11-21 22:33:16,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:33:16,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:33:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:33:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 651 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-21 22:33:17,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:33:17,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726490599] [2024-11-21 22:33:17,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726490599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:33:17,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:33:17,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:33:17,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138736071] [2024-11-21 22:33:17,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:33:17,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:33:17,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:33:17,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:33:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:33:17,686 INFO L87 Difference]: Start difference. First operand 59233 states and 63396 transitions. Second operand has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:20,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:33:20,333 INFO L93 Difference]: Finished difference Result 137211 states and 146743 transitions. [2024-11-21 22:33:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:33:20,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 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 871 [2024-11-21 22:33:20,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:33:20,410 INFO L225 Difference]: With dead ends: 137211 [2024-11-21 22:33:20,410 INFO L226 Difference]: Without dead ends: 77555 [2024-11-21 22:33:20,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:33:20,438 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 662 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-21 22:33:20,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 167 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-21 22:33:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77555 states. [2024-11-21 22:33:21,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77555 to 66039. [2024-11-21 22:33:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66039 states, 66038 states have (on average 1.0718828553257216) internal successors, (70785), 66038 states have internal predecessors, (70785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66039 states to 66039 states and 70785 transitions. [2024-11-21 22:33:21,239 INFO L78 Accepts]: Start accepts. Automaton has 66039 states and 70785 transitions. Word has length 871 [2024-11-21 22:33:21,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:33:21,239 INFO L471 AbstractCegarLoop]: Abstraction has 66039 states and 70785 transitions. [2024-11-21 22:33:21,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:21,240 INFO L276 IsEmpty]: Start isEmpty. Operand 66039 states and 70785 transitions. [2024-11-21 22:33:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 941 [2024-11-21 22:33:21,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:33:21,276 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:33:21,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-21 22:33:21,276 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:33:21,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:33:21,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1475071580, now seen corresponding path program 1 times [2024-11-21 22:33:21,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:33:21,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707074428] [2024-11-21 22:33:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:33:21,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:33:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:33:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 693 proven. 82 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2024-11-21 22:33:22,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:33:22,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707074428] [2024-11-21 22:33:22,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707074428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 22:33:22,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123577206] [2024-11-21 22:33:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:33:22,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:33:22,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 22:33:22,268 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) [2024-11-21 22:33:22,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 22:33:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:33:22,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-21 22:33:22,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 22:33:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 693 proven. 82 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2024-11-21 22:33:22,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 22:33:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 775 proven. 0 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2024-11-21 22:33:23,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123577206] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-21 22:33:23,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-21 22:33:23,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-21 22:33:23,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629429106] [2024-11-21 22:33:23,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:33:23,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:33:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:33:23,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:33:23,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:33:23,096 INFO L87 Difference]: Start difference. First operand 66039 states and 70785 transitions. Second operand has 4 states, 4 states have (on average 128.5) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:33:25,546 INFO L93 Difference]: Finished difference Result 141867 states and 152162 transitions. [2024-11-21 22:33:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:33:25,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 128.5) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 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 940 [2024-11-21 22:33:25,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:33:25,644 INFO L225 Difference]: With dead ends: 141867 [2024-11-21 22:33:25,644 INFO L226 Difference]: Without dead ends: 75830 [2024-11-21 22:33:25,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1881 GetRequests, 1877 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-21 22:33:25,686 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 773 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 2194 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 2194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:33:25,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 168 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 2194 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:33:25,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75830 states. [2024-11-21 22:33:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75830 to 72847. [2024-11-21 22:33:26,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72847 states, 72846 states have (on average 1.0666611756307827) internal successors, (77702), 72846 states have internal predecessors, (77702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72847 states to 72847 states and 77702 transitions. [2024-11-21 22:33:26,741 INFO L78 Accepts]: Start accepts. Automaton has 72847 states and 77702 transitions. Word has length 940 [2024-11-21 22:33:26,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:33:26,741 INFO L471 AbstractCegarLoop]: Abstraction has 72847 states and 77702 transitions. [2024-11-21 22:33:26,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.5) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 72847 states and 77702 transitions. [2024-11-21 22:33:26,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2024-11-21 22:33:26,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:33:26,783 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:33:26,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 22:33:26,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 22:33:26,984 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:33:26,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:33:26,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1987561981, now seen corresponding path program 1 times [2024-11-21 22:33:26,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:33:26,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575132074] [2024-11-21 22:33:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:33:26,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:33:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 22:33:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 1118 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-21 22:33:28,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 22:33:28,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575132074] [2024-11-21 22:33:28,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575132074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 22:33:28,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 22:33:28,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-21 22:33:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548119621] [2024-11-21 22:33:28,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 22:33:28,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 22:33:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 22:33:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 22:33:28,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:33:28,279 INFO L87 Difference]: Start difference. First operand 72847 states and 77702 transitions. Second operand has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:30,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 22:33:30,668 INFO L93 Difference]: Finished difference Result 169558 states and 181196 transitions. [2024-11-21 22:33:30,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 22:33:30,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 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 995 [2024-11-21 22:33:30,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 22:33:30,772 INFO L225 Difference]: With dead ends: 169558 [2024-11-21 22:33:30,773 INFO L226 Difference]: Without dead ends: 96713 [2024-11-21 22:33:30,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-21 22:33:30,956 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 736 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-21 22:33:30,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 128 Invalid, 2592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 2197 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-21 22:33:31,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96713 states. [2024-11-21 22:33:31,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96713 to 95000. [2024-11-21 22:33:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95000 states, 94999 states have (on average 1.0654217412814873) internal successors, (101214), 94999 states have internal predecessors, (101214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95000 states to 95000 states and 101214 transitions. [2024-11-21 22:33:32,091 INFO L78 Accepts]: Start accepts. Automaton has 95000 states and 101214 transitions. Word has length 995 [2024-11-21 22:33:32,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 22:33:32,092 INFO L471 AbstractCegarLoop]: Abstraction has 95000 states and 101214 transitions. [2024-11-21 22:33:32,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.75) internal successors, (695), 4 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 22:33:32,092 INFO L276 IsEmpty]: Start isEmpty. Operand 95000 states and 101214 transitions. [2024-11-21 22:33:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2024-11-21 22:33:32,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 22:33:32,162 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 22:33:32,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-21 22:33:32,163 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 22:33:32,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 22:33:32,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1897581290, now seen corresponding path program 1 times [2024-11-21 22:33:32,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 22:33:32,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935159707] [2024-11-21 22:33:32,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 22:33:32,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 22:33:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat