./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.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 6ccc8126940cf3f46bcb3993cc3f2567a1d57b3d9eef9ad8f60ee950111ffdfc --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 23:50:39,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 23:50:39,584 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 23:50:39,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 23:50:39,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 23:50:39,623 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 23:50:39,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 23:50:39,624 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 23:50:39,625 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 23:50:39,626 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 23:50:39,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 23:50:39,627 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 23:50:39,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 23:50:39,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 23:50:39,629 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 23:50:39,629 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 23:50:39,629 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 23:50:39,630 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 23:50:39,630 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 23:50:39,630 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 23:50:39,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 23:50:39,633 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 23:50:39,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 23:50:39,633 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 23:50:39,633 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 23:50:39,634 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 23:50:39,634 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 23:50:39,634 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 23:50:39,634 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 23:50:39,634 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 23:50:39,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 23:50:39,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 23:50:39,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 23:50:39,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 23:50:39,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 23:50:39,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 23:50:39,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 23:50:39,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 23:50:39,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 23:50:39,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 23:50:39,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 23:50:39,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 23:50:39,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ccc8126940cf3f46bcb3993cc3f2567a1d57b3d9eef9ad8f60ee950111ffdfc [2024-11-19 23:50:39,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 23:50:39,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 23:50:39,860 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 23:50:39,861 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 23:50:39,862 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 23:50:39,863 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2024-11-19 23:50:41,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 23:50:41,545 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 23:50:41,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2024-11-19 23:50:41,577 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/874f6df7a/09e75e50de7649b99c612aa109613769/FLAG00a6eb8e4 [2024-11-19 23:50:41,590 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/874f6df7a/09e75e50de7649b99c612aa109613769 [2024-11-19 23:50:41,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 23:50:41,593 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 23:50:41,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 23:50:41,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 23:50:41,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 23:50:41,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:50:41" (1/1) ... [2024-11-19 23:50:41,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c3cf57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:41, skipping insertion in model container [2024-11-19 23:50:41,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:50:41" (1/1) ... [2024-11-19 23:50:41,742 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 23:50:41,997 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/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[8616,8629] [2024-11-19 23:50:42,020 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/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[11433,11446] [2024-11-19 23:50:42,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 23:50:42,564 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 23:50:42,613 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/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[8616,8629] [2024-11-19 23:50:42,623 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/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[11433,11446] [2024-11-19 23:50:43,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 23:50:43,164 INFO L204 MainTranslator]: Completed translation [2024-11-19 23:50:43,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43 WrapperNode [2024-11-19 23:50:43,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 23:50:43,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 23:50:43,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 23:50:43,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 23:50:43,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:43,223 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:43,422 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5039 [2024-11-19 23:50:43,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 23:50:43,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 23:50:43,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 23:50:43,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 23:50:43,432 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:43,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:43,585 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:43,795 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 23:50:43,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:43,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:43,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:43,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:43,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:43,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:44,023 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 23:50:44,025 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 23:50:44,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 23:50:44,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 23:50:44,026 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (1/1) ... [2024-11-19 23:50:44,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 23:50:44,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:50:44,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 23:50:44,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 23:50:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 23:50:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 23:50:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 23:50:44,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 23:50:44,213 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 23:50:44,219 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 23:50:47,506 INFO L? ?]: Removed 737 outVars from TransFormulas that were not future-live. [2024-11-19 23:50:47,507 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 23:50:47,535 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 23:50:47,535 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 23:50:47,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:50:47 BoogieIcfgContainer [2024-11-19 23:50:47,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 23:50:47,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 23:50:47,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 23:50:47,540 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 23:50:47,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 11:50:41" (1/3) ... [2024-11-19 23:50:47,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@888f50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:50:47, skipping insertion in model container [2024-11-19 23:50:47,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:50:43" (2/3) ... [2024-11-19 23:50:47,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@888f50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 11:50:47, skipping insertion in model container [2024-11-19 23:50:47,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:50:47" (3/3) ... [2024-11-19 23:50:47,542 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2024-11-19 23:50:47,555 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 23:50:47,555 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 23:50:47,617 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 23:50:47,622 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;@5dd25c8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 23:50:47,622 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-19 23:50:47,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:47,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 23:50:47,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:47,635 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] [2024-11-19 23:50:47,636 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:47,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1141430702, now seen corresponding path program 1 times [2024-11-19 23:50:47,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:47,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279896746] [2024-11-19 23:50:47,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:47,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:47,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:47,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279896746] [2024-11-19 23:50:47,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279896746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:47,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:47,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 23:50:47,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780276597] [2024-11-19 23:50:47,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:47,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 23:50:47,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:47,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 23:50:47,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 23:50:47,942 INFO L87 Difference]: Start difference. First operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:48,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:48,005 INFO L93 Difference]: Finished difference Result 1741 states and 3308 transitions. [2024-11-19 23:50:48,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 23:50:48,007 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-19 23:50:48,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:48,019 INFO L225 Difference]: With dead ends: 1741 [2024-11-19 23:50:48,019 INFO L226 Difference]: Without dead ends: 819 [2024-11-19 23:50:48,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 23:50:48,030 INFO L432 NwaCegarLoop]: 1615 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:48,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-19 23:50:48,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2024-11-19 23:50:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.894736842105263) internal successors, (1548), 818 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1548 transitions. [2024-11-19 23:50:48,087 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1548 transitions. Word has length 22 [2024-11-19 23:50:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:48,087 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1548 transitions. [2024-11-19 23:50:48,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1548 transitions. [2024-11-19 23:50:48,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 23:50:48,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:48,088 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] [2024-11-19 23:50:48,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 23:50:48,089 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:48,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash 120362348, now seen corresponding path program 1 times [2024-11-19 23:50:48,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:48,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106616221] [2024-11-19 23:50:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:48,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:48,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:48,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106616221] [2024-11-19 23:50:48,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106616221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:48,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:48,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 23:50:48,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586113515] [2024-11-19 23:50:48,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:48,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 23:50:48,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:48,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 23:50:48,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:50:48,269 INFO L87 Difference]: Start difference. First operand 819 states and 1548 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:48,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:48,406 INFO L93 Difference]: Finished difference Result 895 states and 1666 transitions. [2024-11-19 23:50:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 23:50:48,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2024-11-19 23:50:48,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:48,415 INFO L225 Difference]: With dead ends: 895 [2024-11-19 23:50:48,415 INFO L226 Difference]: Without dead ends: 855 [2024-11-19 23:50:48,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:50:48,417 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 56 mSDsluCounter, 4603 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 6147 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:48,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 6147 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 23:50:48,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-11-19 23:50:48,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 819. [2024-11-19 23:50:48,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.8665850673194615) internal successors, (1525), 818 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1525 transitions. [2024-11-19 23:50:48,466 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1525 transitions. Word has length 22 [2024-11-19 23:50:48,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:48,467 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1525 transitions. [2024-11-19 23:50:48,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1525 transitions. [2024-11-19 23:50:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 23:50:48,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:48,471 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] [2024-11-19 23:50:48,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 23:50:48,471 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:48,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1481273845, now seen corresponding path program 1 times [2024-11-19 23:50:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:48,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039855110] [2024-11-19 23:50:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:48,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:48,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:48,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039855110] [2024-11-19 23:50:48,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039855110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:48,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:48,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 23:50:48,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135833771] [2024-11-19 23:50:48,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:48,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:50:48,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:50:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:48,576 INFO L87 Difference]: Start difference. First operand 819 states and 1525 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:51,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:51,484 INFO L93 Difference]: Finished difference Result 2323 states and 4398 transitions. [2024-11-19 23:50:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:50:51,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-19 23:50:51,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:51,489 INFO L225 Difference]: With dead ends: 2323 [2024-11-19 23:50:51,489 INFO L226 Difference]: Without dead ends: 1570 [2024-11-19 23:50:51,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:51,491 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 880 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:51,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 514 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-19 23:50:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2024-11-19 23:50:51,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1570. [2024-11-19 23:50:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1568 states have (on average 1.6275510204081634) internal successors, (2552), 1569 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 2552 transitions. [2024-11-19 23:50:51,514 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 2552 transitions. Word has length 24 [2024-11-19 23:50:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:51,514 INFO L471 AbstractCegarLoop]: Abstraction has 1570 states and 2552 transitions. [2024-11-19 23:50:51,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 2552 transitions. [2024-11-19 23:50:51,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-19 23:50:51,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:51,516 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:50:51,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 23:50:51,516 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:51,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:51,516 INFO L85 PathProgramCache]: Analyzing trace with hash 550762215, now seen corresponding path program 1 times [2024-11-19 23:50:51,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:51,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375587764] [2024-11-19 23:50:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:51,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:51,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:51,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375587764] [2024-11-19 23:50:51,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375587764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:51,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:51,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:50:51,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126755136] [2024-11-19 23:50:51,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:51,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:50:51,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:51,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:50:51,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:50:51,603 INFO L87 Difference]: Start difference. First operand 1570 states and 2552 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:51,726 INFO L93 Difference]: Finished difference Result 1858 states and 3008 transitions. [2024-11-19 23:50:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 23:50:51,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-19 23:50:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:51,732 INFO L225 Difference]: With dead ends: 1858 [2024-11-19 23:50:51,733 INFO L226 Difference]: Without dead ends: 1822 [2024-11-19 23:50:51,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-19 23:50:51,735 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 6262 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:51,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6262 Valid, 2187 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 23:50:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2024-11-19 23:50:51,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1604. [2024-11-19 23:50:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1602 states have (on average 1.626716604244694) internal successors, (2606), 1603 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:51,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2606 transitions. [2024-11-19 23:50:51,760 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2606 transitions. Word has length 44 [2024-11-19 23:50:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:51,761 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 2606 transitions. [2024-11-19 23:50:51,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:51,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2606 transitions. [2024-11-19 23:50:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 23:50:51,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:51,765 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] [2024-11-19 23:50:51,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 23:50:51,766 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:51,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash -414187945, now seen corresponding path program 1 times [2024-11-19 23:50:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:51,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163958434] [2024-11-19 23:50:51,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:51,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:51,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:51,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163958434] [2024-11-19 23:50:51,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163958434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:51,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:51,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:50:51,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050704468] [2024-11-19 23:50:51,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:51,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:50:51,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:50:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:51,828 INFO L87 Difference]: Start difference. First operand 1604 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:51,849 INFO L93 Difference]: Finished difference Result 1733 states and 2809 transitions. [2024-11-19 23:50:51,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:50:51,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-19 23:50:51,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:51,854 INFO L225 Difference]: With dead ends: 1733 [2024-11-19 23:50:51,854 INFO L226 Difference]: Without dead ends: 1663 [2024-11-19 23:50:51,854 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:51,855 INFO L432 NwaCegarLoop]: 1523 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:51,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1575 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2024-11-19 23:50:51,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2024-11-19 23:50:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.623869801084991) internal successors, (2694), 1660 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2694 transitions. [2024-11-19 23:50:51,878 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2694 transitions. Word has length 46 [2024-11-19 23:50:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:51,879 INFO L471 AbstractCegarLoop]: Abstraction has 1661 states and 2694 transitions. [2024-11-19 23:50:51,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:51,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2694 transitions. [2024-11-19 23:50:51,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 23:50:51,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:51,880 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] [2024-11-19 23:50:51,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 23:50:51,880 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:51,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:51,881 INFO L85 PathProgramCache]: Analyzing trace with hash -347694433, now seen corresponding path program 1 times [2024-11-19 23:50:51,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:51,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452919852] [2024-11-19 23:50:51,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:51,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:51,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:52,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452919852] [2024-11-19 23:50:52,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452919852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:52,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:52,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:50:52,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596262656] [2024-11-19 23:50:52,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:52,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:50:52,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:52,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:50:52,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:50:52,042 INFO L87 Difference]: Start difference. First operand 1661 states and 2694 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:52,121 INFO L93 Difference]: Finished difference Result 1790 states and 2894 transitions. [2024-11-19 23:50:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 23:50:52,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-11-19 23:50:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:52,127 INFO L225 Difference]: With dead ends: 1790 [2024-11-19 23:50:52,127 INFO L226 Difference]: Without dead ends: 1663 [2024-11-19 23:50:52,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-19 23:50:52,128 INFO L432 NwaCegarLoop]: 1519 mSDtfsCounter, 4446 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4446 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:52,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4446 Valid, 1678 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2024-11-19 23:50:52,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2024-11-19 23:50:52,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.622664255575648) internal successors, (2692), 1660 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2692 transitions. [2024-11-19 23:50:52,205 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2692 transitions. Word has length 46 [2024-11-19 23:50:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:52,205 INFO L471 AbstractCegarLoop]: Abstraction has 1661 states and 2692 transitions. [2024-11-19 23:50:52,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2692 transitions. [2024-11-19 23:50:52,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-19 23:50:52,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:52,206 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] [2024-11-19 23:50:52,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 23:50:52,207 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:52,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:52,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1691651312, now seen corresponding path program 1 times [2024-11-19 23:50:52,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:52,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182797124] [2024-11-19 23:50:52,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:52,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:52,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:52,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:52,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182797124] [2024-11-19 23:50:52,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182797124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:52,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:52,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 23:50:52,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189060004] [2024-11-19 23:50:52,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:52,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 23:50:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:52,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 23:50:52,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:50:52,368 INFO L87 Difference]: Start difference. First operand 1661 states and 2692 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:52,434 INFO L93 Difference]: Finished difference Result 1669 states and 2701 transitions. [2024-11-19 23:50:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 23:50:52,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-11-19 23:50:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:52,444 INFO L225 Difference]: With dead ends: 1669 [2024-11-19 23:50:52,444 INFO L226 Difference]: Without dead ends: 1667 [2024-11-19 23:50:52,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 23:50:52,450 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 0 mSDsluCounter, 4557 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:52,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:52,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2024-11-19 23:50:52,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1667. [2024-11-19 23:50:52,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1665 states have (on average 1.61981981981982) internal successors, (2697), 1666 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2697 transitions. [2024-11-19 23:50:52,475 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2697 transitions. Word has length 47 [2024-11-19 23:50:52,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:52,476 INFO L471 AbstractCegarLoop]: Abstraction has 1667 states and 2697 transitions. [2024-11-19 23:50:52,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2697 transitions. [2024-11-19 23:50:52,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 23:50:52,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:52,477 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] [2024-11-19 23:50:52,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 23:50:52,477 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:52,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:52,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1538886047, now seen corresponding path program 1 times [2024-11-19 23:50:52,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:52,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541532958] [2024-11-19 23:50:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:52,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:52,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:52,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541532958] [2024-11-19 23:50:52,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541532958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:52,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:52,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:50:52,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801112273] [2024-11-19 23:50:52,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:52,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:50:52,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:52,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:50:52,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:52,518 INFO L87 Difference]: Start difference. First operand 1667 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:52,540 INFO L93 Difference]: Finished difference Result 1813 states and 2918 transitions. [2024-11-19 23:50:52,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:50:52,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-19 23:50:52,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:52,544 INFO L225 Difference]: With dead ends: 1813 [2024-11-19 23:50:52,545 INFO L226 Difference]: Without dead ends: 1737 [2024-11-19 23:50:52,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:52,546 INFO L432 NwaCegarLoop]: 1567 mSDtfsCounter, 1486 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:52,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2024-11-19 23:50:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1735. [2024-11-19 23:50:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1733 states have (on average 1.6145412579342182) internal successors, (2798), 1734 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2798 transitions. [2024-11-19 23:50:52,570 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2798 transitions. Word has length 48 [2024-11-19 23:50:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:52,571 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 2798 transitions. [2024-11-19 23:50:52,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2798 transitions. [2024-11-19 23:50:52,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 23:50:52,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:52,572 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] [2024-11-19 23:50:52,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 23:50:52,572 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:52,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:52,572 INFO L85 PathProgramCache]: Analyzing trace with hash 561679263, now seen corresponding path program 1 times [2024-11-19 23:50:52,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:52,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346060009] [2024-11-19 23:50:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:52,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:52,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:52,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346060009] [2024-11-19 23:50:52,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346060009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:52,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:52,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:50:52,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019556167] [2024-11-19 23:50:52,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:52,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:50:52,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:52,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:50:52,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:52,606 INFO L87 Difference]: Start difference. First operand 1735 states and 2798 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:52,627 INFO L93 Difference]: Finished difference Result 2109 states and 3358 transitions. [2024-11-19 23:50:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:50:52,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-19 23:50:52,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:52,632 INFO L225 Difference]: With dead ends: 2109 [2024-11-19 23:50:52,633 INFO L226 Difference]: Without dead ends: 1910 [2024-11-19 23:50:52,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:52,634 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 1482 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:52,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:52,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2024-11-19 23:50:52,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1908. [2024-11-19 23:50:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1906 states have (on average 1.6002098635886675) internal successors, (3050), 1907 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 3050 transitions. [2024-11-19 23:50:52,663 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 3050 transitions. Word has length 48 [2024-11-19 23:50:52,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:52,663 INFO L471 AbstractCegarLoop]: Abstraction has 1908 states and 3050 transitions. [2024-11-19 23:50:52,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 3050 transitions. [2024-11-19 23:50:52,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 23:50:52,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:52,664 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] [2024-11-19 23:50:52,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 23:50:52,664 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:52,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:52,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1952355169, now seen corresponding path program 1 times [2024-11-19 23:50:52,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:52,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895698857] [2024-11-19 23:50:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:52,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:52,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:52,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895698857] [2024-11-19 23:50:52,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895698857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:52,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:52,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:50:52,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185784974] [2024-11-19 23:50:52,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:52,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:50:52,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:52,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:50:52,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:52,697 INFO L87 Difference]: Start difference. First operand 1908 states and 3050 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:52,720 INFO L93 Difference]: Finished difference Result 2604 states and 4072 transitions. [2024-11-19 23:50:52,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:50:52,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-19 23:50:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:52,726 INFO L225 Difference]: With dead ends: 2604 [2024-11-19 23:50:52,726 INFO L226 Difference]: Without dead ends: 2232 [2024-11-19 23:50:52,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:52,727 INFO L432 NwaCegarLoop]: 1557 mSDtfsCounter, 1480 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:52,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:52,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2024-11-19 23:50:52,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2230. [2024-11-19 23:50:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 2228 states have (on average 1.573608617594255) internal successors, (3506), 2229 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3506 transitions. [2024-11-19 23:50:52,761 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3506 transitions. Word has length 48 [2024-11-19 23:50:52,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:52,761 INFO L471 AbstractCegarLoop]: Abstraction has 2230 states and 3506 transitions. [2024-11-19 23:50:52,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3506 transitions. [2024-11-19 23:50:52,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 23:50:52,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:52,762 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] [2024-11-19 23:50:52,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 23:50:52,762 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:52,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1517819233, now seen corresponding path program 1 times [2024-11-19 23:50:52,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:52,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51674181] [2024-11-19 23:50:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:52,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:52,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:52,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:52,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51674181] [2024-11-19 23:50:52,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51674181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:52,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:52,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:50:52,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044334352] [2024-11-19 23:50:52,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:52,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:50:52,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:52,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:50:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:52,794 INFO L87 Difference]: Start difference. First operand 2230 states and 3506 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:52,821 INFO L93 Difference]: Finished difference Result 3522 states and 5356 transitions. [2024-11-19 23:50:52,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:50:52,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-19 23:50:52,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:52,829 INFO L225 Difference]: With dead ends: 3522 [2024-11-19 23:50:52,829 INFO L226 Difference]: Without dead ends: 2828 [2024-11-19 23:50:52,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:52,831 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 1484 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:52,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:52,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2024-11-19 23:50:52,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2826. [2024-11-19 23:50:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2824 states have (on average 1.5304532577903682) internal successors, (4322), 2825 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 4322 transitions. [2024-11-19 23:50:52,877 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 4322 transitions. Word has length 48 [2024-11-19 23:50:52,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:52,877 INFO L471 AbstractCegarLoop]: Abstraction has 2826 states and 4322 transitions. [2024-11-19 23:50:52,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 4322 transitions. [2024-11-19 23:50:52,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 23:50:52,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:52,878 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:50:52,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 23:50:52,879 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:52,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:52,879 INFO L85 PathProgramCache]: Analyzing trace with hash 879514788, now seen corresponding path program 1 times [2024-11-19 23:50:52,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:52,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130096226] [2024-11-19 23:50:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:52,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 23:50:52,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:52,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130096226] [2024-11-19 23:50:52,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130096226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:52,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:52,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:50:52,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145348287] [2024-11-19 23:50:52,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:52,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:50:52,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:52,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:50:52,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:50:52,987 INFO L87 Difference]: Start difference. First operand 2826 states and 4322 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2024-11-19 23:50:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:53,178 INFO L93 Difference]: Finished difference Result 7916 states and 11511 transitions. [2024-11-19 23:50:53,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 23:50:53,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 65 [2024-11-19 23:50:53,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:53,197 INFO L225 Difference]: With dead ends: 7916 [2024-11-19 23:50:53,197 INFO L226 Difference]: Without dead ends: 6986 [2024-11-19 23:50:53,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 23:50:53,201 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4645 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4645 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:53,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4645 Valid, 3320 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:53,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2024-11-19 23:50:53,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 3938. [2024-11-19 23:50:53,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 3936 states have (on average 1.4923780487804879) internal successors, (5874), 3937 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:53,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 5874 transitions. [2024-11-19 23:50:53,319 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 5874 transitions. Word has length 65 [2024-11-19 23:50:53,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:53,319 INFO L471 AbstractCegarLoop]: Abstraction has 3938 states and 5874 transitions. [2024-11-19 23:50:53,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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) [2024-11-19 23:50:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 5874 transitions. [2024-11-19 23:50:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 23:50:53,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:53,321 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:50:53,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 23:50:53,322 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:53,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:53,323 INFO L85 PathProgramCache]: Analyzing trace with hash -97691996, now seen corresponding path program 1 times [2024-11-19 23:50:53,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:53,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6443404] [2024-11-19 23:50:53,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:53,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 23:50:53,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:53,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6443404] [2024-11-19 23:50:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6443404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:53,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:53,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:50:53,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063377770] [2024-11-19 23:50:53,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:53,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:50:53,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:50:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:50:53,447 INFO L87 Difference]: Start difference. First operand 3938 states and 5874 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:53,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:53,627 INFO L93 Difference]: Finished difference Result 9204 states and 13319 transitions. [2024-11-19 23:50:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 23:50:53,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 65 [2024-11-19 23:50:53,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:53,647 INFO L225 Difference]: With dead ends: 9204 [2024-11-19 23:50:53,648 INFO L226 Difference]: Without dead ends: 7914 [2024-11-19 23:50:53,652 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 23:50:53,653 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4683 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:53,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 3323 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:53,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2024-11-19 23:50:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 5690. [2024-11-19 23:50:53,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5690 states, 5688 states have (on average 1.461673699015471) internal successors, (8314), 5689 states have internal predecessors, (8314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:53,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 8314 transitions. [2024-11-19 23:50:53,806 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 8314 transitions. Word has length 65 [2024-11-19 23:50:53,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:53,807 INFO L471 AbstractCegarLoop]: Abstraction has 5690 states and 8314 transitions. [2024-11-19 23:50:53,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:53,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 8314 transitions. [2024-11-19 23:50:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 23:50:53,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:53,809 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:50:53,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 23:50:53,809 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:53,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:53,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1683240868, now seen corresponding path program 1 times [2024-11-19 23:50:53,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:53,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267048893] [2024-11-19 23:50:53,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:53,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 23:50:53,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:53,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267048893] [2024-11-19 23:50:53,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267048893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:53,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:53,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:50:53,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119825462] [2024-11-19 23:50:53,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:53,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:50:53,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:53,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:50:53,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:50:53,898 INFO L87 Difference]: Start difference. First operand 5690 states and 8314 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:54,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:54,042 INFO L93 Difference]: Finished difference Result 10492 states and 15119 transitions. [2024-11-19 23:50:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 23:50:54,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 65 [2024-11-19 23:50:54,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:54,056 INFO L225 Difference]: With dead ends: 10492 [2024-11-19 23:50:54,056 INFO L226 Difference]: Without dead ends: 9202 [2024-11-19 23:50:54,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 23:50:54,061 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4677 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:54,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3339 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9202 states. [2024-11-19 23:50:54,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9202 to 6978. [2024-11-19 23:50:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6978 states, 6976 states have (on average 1.4498279816513762) internal successors, (10114), 6977 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 10114 transitions. [2024-11-19 23:50:54,277 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 10114 transitions. Word has length 65 [2024-11-19 23:50:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:54,277 INFO L471 AbstractCegarLoop]: Abstraction has 6978 states and 10114 transitions. [2024-11-19 23:50:54,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:54,278 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 10114 transitions. [2024-11-19 23:50:54,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 23:50:54,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:54,279 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:50:54,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 23:50:54,279 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:54,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:54,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2117776804, now seen corresponding path program 1 times [2024-11-19 23:50:54,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:54,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858473665] [2024-11-19 23:50:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:54,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 23:50:54,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858473665] [2024-11-19 23:50:54,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858473665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:54,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:54,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 23:50:54,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98736223] [2024-11-19 23:50:54,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:54,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 23:50:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:54,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 23:50:54,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 23:50:54,436 INFO L87 Difference]: Start difference. First operand 6978 states and 10114 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:54,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:54,615 INFO L93 Difference]: Finished difference Result 11780 states and 16919 transitions. [2024-11-19 23:50:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 23:50:54,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 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 65 [2024-11-19 23:50:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:54,631 INFO L225 Difference]: With dead ends: 11780 [2024-11-19 23:50:54,631 INFO L226 Difference]: Without dead ends: 10490 [2024-11-19 23:50:54,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-19 23:50:54,636 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 4647 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:54,637 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4647 Valid, 3375 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 23:50:54,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10490 states. [2024-11-19 23:50:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10490 to 8266. [2024-11-19 23:50:54,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 8264 states have (on average 1.441674733785092) internal successors, (11914), 8265 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11914 transitions. [2024-11-19 23:50:54,784 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11914 transitions. Word has length 65 [2024-11-19 23:50:54,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:54,784 INFO L471 AbstractCegarLoop]: Abstraction has 8266 states and 11914 transitions. [2024-11-19 23:50:54,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:54,785 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11914 transitions. [2024-11-19 23:50:54,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-19 23:50:54,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:54,786 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:50:54,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 23:50:54,786 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:54,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:54,787 INFO L85 PathProgramCache]: Analyzing trace with hash -999421060, now seen corresponding path program 1 times [2024-11-19 23:50:54,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:54,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479076320] [2024-11-19 23:50:54,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:54,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:54,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:54,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479076320] [2024-11-19 23:50:54,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479076320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:54,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:54,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:50:54,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673471128] [2024-11-19 23:50:54,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:54,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:50:54,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:54,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:50:54,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:54,853 INFO L87 Difference]: Start difference. First operand 8266 states and 11914 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:54,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:54,939 INFO L93 Difference]: Finished difference Result 14998 states and 21332 transitions. [2024-11-19 23:50:54,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:50:54,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2024-11-19 23:50:54,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:54,952 INFO L225 Difference]: With dead ends: 14998 [2024-11-19 23:50:54,952 INFO L226 Difference]: Without dead ends: 8268 [2024-11-19 23:50:54,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:54,959 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 37 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:54,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:54,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2024-11-19 23:50:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 8266. [2024-11-19 23:50:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 8264 states have (on average 1.4266698935140367) internal successors, (11790), 8265 states have internal predecessors, (11790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11790 transitions. [2024-11-19 23:50:55,190 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11790 transitions. Word has length 66 [2024-11-19 23:50:55,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:55,190 INFO L471 AbstractCegarLoop]: Abstraction has 8266 states and 11790 transitions. [2024-11-19 23:50:55,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:55,190 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11790 transitions. [2024-11-19 23:50:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 23:50:55,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:55,191 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:50:55,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 23:50:55,192 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:55,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:55,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195300, now seen corresponding path program 1 times [2024-11-19 23:50:55,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:55,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904749464] [2024-11-19 23:50:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:55,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:55,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:55,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904749464] [2024-11-19 23:50:55,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904749464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:55,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:55,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:50:55,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241559938] [2024-11-19 23:50:55,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:55,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:50:55,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:55,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:50:55,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:55,317 INFO L87 Difference]: Start difference. First operand 8266 states and 11790 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:55,412 INFO L93 Difference]: Finished difference Result 10839 states and 15374 transitions. [2024-11-19 23:50:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:50:55,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2024-11-19 23:50:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:55,423 INFO L225 Difference]: With dead ends: 10839 [2024-11-19 23:50:55,426 INFO L226 Difference]: Without dead ends: 4109 [2024-11-19 23:50:55,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:55,437 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 31 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:55,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3061 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2024-11-19 23:50:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4101. [2024-11-19 23:50:55,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4099 states have (on average 1.4708465479385215) internal successors, (6029), 4100 states have internal predecessors, (6029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6029 transitions. [2024-11-19 23:50:55,561 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6029 transitions. Word has length 67 [2024-11-19 23:50:55,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:55,561 INFO L471 AbstractCegarLoop]: Abstraction has 4101 states and 6029 transitions. [2024-11-19 23:50:55,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:55,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6029 transitions. [2024-11-19 23:50:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 23:50:55,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:55,566 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:50:55,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 23:50:55,567 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:55,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:55,567 INFO L85 PathProgramCache]: Analyzing trace with hash 823701102, now seen corresponding path program 1 times [2024-11-19 23:50:55,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:55,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473055214] [2024-11-19 23:50:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:55,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:55,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:55,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473055214] [2024-11-19 23:50:55,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473055214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:55,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:55,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:50:55,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434687768] [2024-11-19 23:50:55,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:55,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:50:55,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:55,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:50:55,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:55,677 INFO L87 Difference]: Start difference. First operand 4101 states and 6029 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:55,708 INFO L93 Difference]: Finished difference Result 5381 states and 7791 transitions. [2024-11-19 23:50:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:50:55,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-11-19 23:50:55,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:55,713 INFO L225 Difference]: With dead ends: 5381 [2024-11-19 23:50:55,713 INFO L226 Difference]: Without dead ends: 2827 [2024-11-19 23:50:55,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:55,716 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 33 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:55,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:55,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2024-11-19 23:50:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2825. [2024-11-19 23:50:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2823 states have (on average 1.5044279135671272) internal successors, (4247), 2824 states have internal predecessors, (4247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4247 transitions. [2024-11-19 23:50:55,750 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4247 transitions. Word has length 68 [2024-11-19 23:50:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:55,751 INFO L471 AbstractCegarLoop]: Abstraction has 2825 states and 4247 transitions. [2024-11-19 23:50:55,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:55,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4247 transitions. [2024-11-19 23:50:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-19 23:50:55,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:55,752 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:50:55,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 23:50:55,752 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:55,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash -447735840, now seen corresponding path program 1 times [2024-11-19 23:50:55,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:55,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570334572] [2024-11-19 23:50:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:55,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:55,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:55,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570334572] [2024-11-19 23:50:55,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570334572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 23:50:55,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 23:50:55,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 23:50:55,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461324316] [2024-11-19 23:50:55,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 23:50:55,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 23:50:55,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 23:50:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:55,822 INFO L87 Difference]: Start difference. First operand 2825 states and 4247 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:55,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:55,843 INFO L93 Difference]: Finished difference Result 3467 states and 5118 transitions. [2024-11-19 23:50:55,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 23:50:55,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-19 23:50:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:55,847 INFO L225 Difference]: With dead ends: 3467 [2024-11-19 23:50:55,847 INFO L226 Difference]: Without dead ends: 2189 [2024-11-19 23:50:55,848 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 23:50:55,849 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 30 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:55,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 23:50:55,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2024-11-19 23:50:55,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2024-11-19 23:50:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.5409610983981694) internal successors, (3367), 2186 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3367 transitions. [2024-11-19 23:50:55,876 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3367 transitions. Word has length 70 [2024-11-19 23:50:55,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:55,876 INFO L471 AbstractCegarLoop]: Abstraction has 2187 states and 3367 transitions. [2024-11-19 23:50:55,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:55,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3367 transitions. [2024-11-19 23:50:55,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-19 23:50:55,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:55,877 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:50:55,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 23:50:55,878 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:55,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:55,879 INFO L85 PathProgramCache]: Analyzing trace with hash -164665390, now seen corresponding path program 1 times [2024-11-19 23:50:55,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:55,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713407531] [2024-11-19 23:50:55,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:55,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 23:50:55,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:55,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713407531] [2024-11-19 23:50:55,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713407531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:50:55,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833587504] [2024-11-19 23:50:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:55,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:50:55,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:50:55,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:50:55,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 23:50:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:56,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 23:50:56,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:50:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:56,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:50:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833587504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:50:56,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:50:56,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 13 [2024-11-19 23:50:56,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128324259] [2024-11-19 23:50:56,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:50:56,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 23:50:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:50:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 23:50:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-19 23:50:56,679 INFO L87 Difference]: Start difference. First operand 2187 states and 3367 transitions. Second operand has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:56,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:50:56,939 INFO L93 Difference]: Finished difference Result 4996 states and 7019 transitions. [2024-11-19 23:50:56,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 23:50:56,940 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 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 72 [2024-11-19 23:50:56,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:50:56,945 INFO L225 Difference]: With dead ends: 4996 [2024-11-19 23:50:56,946 INFO L226 Difference]: Without dead ends: 4319 [2024-11-19 23:50:56,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2024-11-19 23:50:56,948 INFO L432 NwaCegarLoop]: 1599 mSDtfsCounter, 3235 mSDsluCounter, 6515 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3235 SdHoareTripleChecker+Valid, 8114 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 23:50:56,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3235 Valid, 8114 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 23:50:56,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2024-11-19 23:50:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 3961. [2024-11-19 23:50:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3961 states, 3959 states have (on average 1.4190452134377367) internal successors, (5618), 3960 states have internal predecessors, (5618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 5618 transitions. [2024-11-19 23:50:57,035 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 5618 transitions. Word has length 72 [2024-11-19 23:50:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:50:57,035 INFO L471 AbstractCegarLoop]: Abstraction has 3961 states and 5618 transitions. [2024-11-19 23:50:57,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.307692307692308) internal successors, (199), 13 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:50:57,035 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 5618 transitions. [2024-11-19 23:50:57,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-19 23:50:57,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:50:57,036 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 23:50:57,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 23:50:57,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:50:57,238 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:50:57,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:50:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash -790906490, now seen corresponding path program 1 times [2024-11-19 23:50:57,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:50:57,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262238340] [2024-11-19 23:50:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:57,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:50:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:58,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:50:58,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262238340] [2024-11-19 23:50:58,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262238340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:50:58,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191186881] [2024-11-19 23:50:58,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:50:58,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:50:58,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:50:58,876 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:50:58,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 23:50:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:50:58,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 23:50:58,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:50:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:50:59,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:51:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:00,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191186881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:51:00,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:51:00,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 34 [2024-11-19 23:51:00,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958838657] [2024-11-19 23:51:00,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:51:00,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-19 23:51:00,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:51:00,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-19 23:51:00,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2024-11-19 23:51:00,338 INFO L87 Difference]: Start difference. First operand 3961 states and 5618 transitions. Second operand has 34 states, 34 states have (on average 5.735294117647059) internal successors, (195), 34 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:03,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:51:03,833 INFO L93 Difference]: Finished difference Result 12542 states and 16886 transitions. [2024-11-19 23:51:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-19 23:51:03,833 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.735294117647059) internal successors, (195), 34 states have internal predecessors, (195), 0 states have call successors, (0), 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 73 [2024-11-19 23:51:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:51:03,848 INFO L225 Difference]: With dead ends: 12542 [2024-11-19 23:51:03,849 INFO L226 Difference]: Without dead ends: 10179 [2024-11-19 23:51:03,855 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1675 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1260, Invalid=5546, Unknown=0, NotChecked=0, Total=6806 [2024-11-19 23:51:03,855 INFO L432 NwaCegarLoop]: 1495 mSDtfsCounter, 23172 mSDsluCounter, 9605 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23172 SdHoareTripleChecker+Valid, 11100 SdHoareTripleChecker+Invalid, 1168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-19 23:51:03,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23172 Valid, 11100 Invalid, 1168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-19 23:51:03,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10179 states. [2024-11-19 23:51:04,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10179 to 9932. [2024-11-19 23:51:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9932 states, 9930 states have (on average 1.3367573011077543) internal successors, (13274), 9931 states have internal predecessors, (13274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9932 states to 9932 states and 13274 transitions. [2024-11-19 23:51:04,099 INFO L78 Accepts]: Start accepts. Automaton has 9932 states and 13274 transitions. Word has length 73 [2024-11-19 23:51:04,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:51:04,101 INFO L471 AbstractCegarLoop]: Abstraction has 9932 states and 13274 transitions. [2024-11-19 23:51:04,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.735294117647059) internal successors, (195), 34 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:04,101 INFO L276 IsEmpty]: Start isEmpty. Operand 9932 states and 13274 transitions. [2024-11-19 23:51:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-19 23:51:04,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:51:04,102 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:51:04,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 23:51:04,302 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,SelfDestructingSolverStorable20 [2024-11-19 23:51:04,303 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:51:04,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:51:04,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1110377720, now seen corresponding path program 1 times [2024-11-19 23:51:04,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:51:04,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153489626] [2024-11-19 23:51:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:51:04,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:51:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:51:05,434 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:05,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:51:05,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153489626] [2024-11-19 23:51:05,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153489626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:51:05,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467332938] [2024-11-19 23:51:05,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:51:05,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:51:05,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:51:05,437 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:51:05,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 23:51:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:51:05,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 23:51:05,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:51:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:05,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:51:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:06,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467332938] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:51:06,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:51:06,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-19 23:51:06,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126500224] [2024-11-19 23:51:06,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:51:06,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 23:51:06,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:51:06,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 23:51:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-19 23:51:06,364 INFO L87 Difference]: Start difference. First operand 9932 states and 13274 transitions. Second operand has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 25 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:07,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:51:07,018 INFO L93 Difference]: Finished difference Result 26540 states and 34769 transitions. [2024-11-19 23:51:07,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 23:51:07,020 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 25 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-19 23:51:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:51:07,048 INFO L225 Difference]: With dead ends: 26540 [2024-11-19 23:51:07,048 INFO L226 Difference]: Without dead ends: 18742 [2024-11-19 23:51:07,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 23:51:07,060 INFO L432 NwaCegarLoop]: 1498 mSDtfsCounter, 16584 mSDsluCounter, 4725 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16584 SdHoareTripleChecker+Valid, 6223 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 23:51:07,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16584 Valid, 6223 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 23:51:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18742 states. [2024-11-19 23:51:07,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18742 to 18540. [2024-11-19 23:51:07,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18540 states, 18538 states have (on average 1.2977128061279535) internal successors, (24057), 18539 states have internal predecessors, (24057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:07,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18540 states to 18540 states and 24057 transitions. [2024-11-19 23:51:07,746 INFO L78 Accepts]: Start accepts. Automaton has 18540 states and 24057 transitions. Word has length 73 [2024-11-19 23:51:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:51:07,747 INFO L471 AbstractCegarLoop]: Abstraction has 18540 states and 24057 transitions. [2024-11-19 23:51:07,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.730769230769231) internal successors, (175), 25 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:07,747 INFO L276 IsEmpty]: Start isEmpty. Operand 18540 states and 24057 transitions. [2024-11-19 23:51:07,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-19 23:51:07,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:51:07,760 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:51:07,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 23:51:07,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:51:07,961 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:51:07,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:51:07,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1917258732, now seen corresponding path program 1 times [2024-11-19 23:51:07,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:51:07,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515136776] [2024-11-19 23:51:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:51:07,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:51:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:51:08,468 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:08,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:51:08,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515136776] [2024-11-19 23:51:08,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515136776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:51:08,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969425282] [2024-11-19 23:51:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:51:08,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:51:08,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:51:08,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:51:08,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 23:51:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:51:08,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 23:51:08,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:51:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:08,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:51:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:09,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969425282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:51:09,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:51:09,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-19 23:51:09,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347824393] [2024-11-19 23:51:09,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:51:09,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 23:51:09,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:51:09,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 23:51:09,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2024-11-19 23:51:09,407 INFO L87 Difference]: Start difference. First operand 18540 states and 24057 transitions. Second operand has 22 states, 22 states have (on average 7.0) internal successors, (154), 21 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:51:10,288 INFO L93 Difference]: Finished difference Result 48331 states and 61921 transitions. [2024-11-19 23:51:10,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 23:51:10,289 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 7.0) internal successors, (154), 21 states have internal predecessors, (154), 0 states have call successors, (0), 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 74 [2024-11-19 23:51:10,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:51:10,357 INFO L225 Difference]: With dead ends: 48331 [2024-11-19 23:51:10,361 INFO L226 Difference]: Without dead ends: 32220 [2024-11-19 23:51:10,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=243, Invalid=687, Unknown=0, NotChecked=0, Total=930 [2024-11-19 23:51:10,394 INFO L432 NwaCegarLoop]: 1498 mSDtfsCounter, 15245 mSDsluCounter, 3194 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15245 SdHoareTripleChecker+Valid, 4692 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 23:51:10,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15245 Valid, 4692 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 23:51:10,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32220 states. [2024-11-19 23:51:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32220 to 32216. [2024-11-19 23:51:11,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32216 states, 32214 states have (on average 1.2799714409883902) internal successors, (41233), 32215 states have internal predecessors, (41233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32216 states to 32216 states and 41233 transitions. [2024-11-19 23:51:11,291 INFO L78 Accepts]: Start accepts. Automaton has 32216 states and 41233 transitions. Word has length 74 [2024-11-19 23:51:11,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:51:11,292 INFO L471 AbstractCegarLoop]: Abstraction has 32216 states and 41233 transitions. [2024-11-19 23:51:11,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.0) internal successors, (154), 21 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:11,292 INFO L276 IsEmpty]: Start isEmpty. Operand 32216 states and 41233 transitions. [2024-11-19 23:51:11,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-19 23:51:11,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:51:11,293 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:51:11,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 23:51:11,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:51:11,494 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:51:11,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:51:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1897348188, now seen corresponding path program 1 times [2024-11-19 23:51:11,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:51:11,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234208301] [2024-11-19 23:51:11,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:51:11,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:51:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:51:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:12,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:51:12,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234208301] [2024-11-19 23:51:12,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234208301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:51:12,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123689383] [2024-11-19 23:51:12,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:51:12,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:51:12,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:51:12,148 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:51:12,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 23:51:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:51:12,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 23:51:12,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:51:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:12,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:51:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:13,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123689383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:51:13,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:51:13,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2024-11-19 23:51:13,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857451444] [2024-11-19 23:51:13,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:51:13,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 23:51:13,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:51:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 23:51:13,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2024-11-19 23:51:13,437 INFO L87 Difference]: Start difference. First operand 32216 states and 41233 transitions. Second operand has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:15,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 23:51:15,494 INFO L93 Difference]: Finished difference Result 61940 states and 79452 transitions. [2024-11-19 23:51:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 23:51:15,499 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 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 74 [2024-11-19 23:51:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 23:51:15,587 INFO L225 Difference]: With dead ends: 61940 [2024-11-19 23:51:15,588 INFO L226 Difference]: Without dead ends: 50812 [2024-11-19 23:51:15,599 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=516, Invalid=1934, Unknown=0, NotChecked=0, Total=2450 [2024-11-19 23:51:15,600 INFO L432 NwaCegarLoop]: 1516 mSDtfsCounter, 8627 mSDsluCounter, 15163 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8627 SdHoareTripleChecker+Valid, 16679 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 23:51:15,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8627 Valid, 16679 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 23:51:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50812 states. [2024-11-19 23:51:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50812 to 29484. [2024-11-19 23:51:16,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29484 states, 29482 states have (on average 1.2782036496845532) internal successors, (37684), 29483 states have internal predecessors, (37684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:16,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29484 states to 29484 states and 37684 transitions. [2024-11-19 23:51:16,827 INFO L78 Accepts]: Start accepts. Automaton has 29484 states and 37684 transitions. Word has length 74 [2024-11-19 23:51:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 23:51:16,828 INFO L471 AbstractCegarLoop]: Abstraction has 29484 states and 37684 transitions. [2024-11-19 23:51:16,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 23:51:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand 29484 states and 37684 transitions. [2024-11-19 23:51:16,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-19 23:51:16,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 23:51:16,830 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 23:51:16,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 23:51:17,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-19 23:51:17,031 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 23:51:17,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 23:51:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 655774848, now seen corresponding path program 1 times [2024-11-19 23:51:17,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 23:51:17,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507262418] [2024-11-19 23:51:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:51:17,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 23:51:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:51:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:17,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 23:51:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507262418] [2024-11-19 23:51:17,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507262418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 23:51:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73659584] [2024-11-19 23:51:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 23:51:17,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 23:51:17,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 23:51:17,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 23:51:17,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 23:51:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 23:51:17,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-19 23:51:17,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 23:51:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:27,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 23:51:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 23:51:33,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73659584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 23:51:33,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 23:51:33,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 30, 29] total 64 [2024-11-19 23:51:33,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994136881] [2024-11-19 23:51:33,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 23:51:33,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-19 23:51:33,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 23:51:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-19 23:51:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=3281, Unknown=0, NotChecked=0, Total=4032 [2024-11-19 23:51:33,479 INFO L87 Difference]: Start difference. First operand 29484 states and 37684 transitions. Second operand has 64 states, 64 states have (on average 3.1875) internal successors, (204), 64 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)