./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_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 a42cc7b23356af8f990e37e65409357e19b65ee1c31777e57e6bb4b8aaa5354c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 04:47:18,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 04:47:18,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 04:47:18,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 04:47:18,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 04:47:18,225 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 04:47:18,226 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 04:47:18,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 04:47:18,227 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 04:47:18,228 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 04:47:18,228 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 04:47:18,228 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 04:47:18,230 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 04:47:18,230 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 04:47:18,232 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 04:47:18,232 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 04:47:18,232 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 04:47:18,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 04:47:18,233 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 04:47:18,233 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 04:47:18,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 04:47:18,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 04:47:18,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 04:47:18,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 04:47:18,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 04:47:18,238 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 04:47:18,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 04:47:18,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 04:47:18,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 04:47:18,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 04:47:18,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 04:47:18,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 04:47:18,239 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:47:18,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 04:47:18,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 04:47:18,241 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 04:47:18,241 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 04:47:18,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 04:47:18,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 04:47:18,242 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 04:47:18,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 04:47:18,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 04:47:18,243 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a42cc7b23356af8f990e37e65409357e19b65ee1c31777e57e6bb4b8aaa5354c [2024-10-11 04:47:18,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 04:47:18,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 04:47:18,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 04:47:18,563 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 04:47:18,564 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 04:47:18,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-10-11 04:47:20,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 04:47:20,475 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 04:47:20,476 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-10-11 04:47:20,515 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8bc7f64e6/2c6934b6d40943889c9cc167644e7a7b/FLAG712b79138 [2024-10-11 04:47:20,591 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8bc7f64e6/2c6934b6d40943889c9cc167644e7a7b [2024-10-11 04:47:20,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 04:47:20,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 04:47:20,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 04:47:20,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 04:47:20,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 04:47:20,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:47:20" (1/1) ... [2024-10-11 04:47:20,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e02c7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:20, skipping insertion in model container [2024-10-11 04:47:20,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:47:20" (1/1) ... [2024-10-11 04:47:20,709 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 04:47:21,102 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[8786,8799] [2024-10-11 04:47:21,180 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[15847,15860] [2024-10-11 04:47:21,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:47:21,876 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 04:47:21,908 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[8786,8799] [2024-10-11 04:47:21,917 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[15847,15860] [2024-10-11 04:47:22,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 04:47:22,364 INFO L204 MainTranslator]: Completed translation [2024-10-11 04:47:22,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22 WrapperNode [2024-10-11 04:47:22,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 04:47:22,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 04:47:22,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 04:47:22,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 04:47:22,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:22,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:22,862 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5037 [2024-10-11 04:47:22,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 04:47:22,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 04:47:22,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 04:47:22,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 04:47:22,875 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:22,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:22,941 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:23,100 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 04:47:23,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:23,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:23,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:23,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:23,392 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:23,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:23,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 04:47:23,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 04:47:23,496 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 04:47:23,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 04:47:23,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (1/1) ... [2024-10-11 04:47:23,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 04:47:23,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:23,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 04:47:23,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 04:47:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 04:47:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 04:47:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 04:47:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 04:47:23,767 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 04:47:23,772 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 04:47:28,323 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-10-11 04:47:28,323 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 04:47:28,391 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 04:47:28,391 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 04:47:28,392 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:47:28 BoogieIcfgContainer [2024-10-11 04:47:28,392 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 04:47:28,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 04:47:28,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 04:47:28,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 04:47:28,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:47:20" (1/3) ... [2024-10-11 04:47:28,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fba22b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:47:28, skipping insertion in model container [2024-10-11 04:47:28,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:22" (2/3) ... [2024-10-11 04:47:28,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fba22b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:47:28, skipping insertion in model container [2024-10-11 04:47:28,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:47:28" (3/3) ... [2024-10-11 04:47:28,400 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-10-11 04:47:28,416 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 04:47:28,416 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 04:47:28,510 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 04:47:28,517 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;@3b77c75c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 04:47:28,517 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 04:47:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 04:47:28,531 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:28,532 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:28,532 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:28,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:28,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1425616648, now seen corresponding path program 1 times [2024-10-11 04:47:28,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:28,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009368795] [2024-10-11 04:47:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:28,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:28,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:28,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009368795] [2024-10-11 04:47:28,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009368795] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:28,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:28,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 04:47:28,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311516221] [2024-10-11 04:47:28,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:28,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 04:47:28,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 04:47:28,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 04:47:28,814 INFO L87 Difference]: Start difference. First operand has 820 states, 817 states have (on average 1.97796817625459) internal successors, (1616), 819 states have internal predecessors, (1616), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:28,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:28,909 INFO L93 Difference]: Finished difference Result 1612 states and 3179 transitions. [2024-10-11 04:47:28,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 04:47:28,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-10-11 04:47:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:28,931 INFO L225 Difference]: With dead ends: 1612 [2024-10-11 04:47:28,931 INFO L226 Difference]: Without dead ends: 816 [2024-10-11 04:47:28,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 04:47:28,946 INFO L432 NwaCegarLoop]: 1544 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:28,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1544 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2024-10-11 04:47:29,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2024-10-11 04:47:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.898034398034398) internal successors, (1545), 815 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1545 transitions. [2024-10-11 04:47:29,038 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1545 transitions. Word has length 19 [2024-10-11 04:47:29,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:29,039 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1545 transitions. [2024-10-11 04:47:29,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1545 transitions. [2024-10-11 04:47:29,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-11 04:47:29,040 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:29,040 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:29,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 04:47:29,041 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:29,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:29,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1589486970, now seen corresponding path program 1 times [2024-10-11 04:47:29,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:29,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006677606] [2024-10-11 04:47:29,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:29,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:29,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:29,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:29,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006677606] [2024-10-11 04:47:29,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006677606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:29,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:29,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 04:47:29,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71204917] [2024-10-11 04:47:29,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:29,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:47:29,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:29,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:47:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:47:29,211 INFO L87 Difference]: Start difference. First operand 816 states and 1545 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:29,317 INFO L93 Difference]: Finished difference Result 854 states and 1604 transitions. [2024-10-11 04:47:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:47:29,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-10-11 04:47:29,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:29,323 INFO L225 Difference]: With dead ends: 854 [2024-10-11 04:47:29,324 INFO L226 Difference]: Without dead ends: 816 [2024-10-11 04:47:29,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:47:29,326 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 0 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:29,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4599 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:29,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2024-10-11 04:47:29,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 816. [2024-10-11 04:47:29,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 814 states have (on average 1.8697788697788698) internal successors, (1522), 815 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1522 transitions. [2024-10-11 04:47:29,359 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1522 transitions. Word has length 19 [2024-10-11 04:47:29,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:29,359 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1522 transitions. [2024-10-11 04:47:29,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:29,360 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1522 transitions. [2024-10-11 04:47:29,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-11 04:47:29,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:29,361 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] [2024-10-11 04:47:29,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 04:47:29,362 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:29,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash 775575541, now seen corresponding path program 1 times [2024-10-11 04:47:29,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:29,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383585474] [2024-10-11 04:47:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:29,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:29,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:29,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383585474] [2024-10-11 04:47:29,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383585474] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:29,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:29,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:29,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955522106] [2024-10-11 04:47:29,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:29,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:29,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:29,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:29,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:29,619 INFO L87 Difference]: Start difference. First operand 816 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:29,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:29,844 INFO L93 Difference]: Finished difference Result 1096 states and 1970 transitions. [2024-10-11 04:47:29,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 04:47:29,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-10-11 04:47:29,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:29,851 INFO L225 Difference]: With dead ends: 1096 [2024-10-11 04:47:29,852 INFO L226 Difference]: Without dead ends: 1061 [2024-10-11 04:47:29,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 04:47:29,855 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 6246 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6246 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:29,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6246 Valid, 2155 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2024-10-11 04:47:29,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 849. [2024-10-11 04:47:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 847 states have (on average 1.859504132231405) internal successors, (1575), 848 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1575 transitions. [2024-10-11 04:47:29,882 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1575 transitions. Word has length 41 [2024-10-11 04:47:29,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:29,885 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1575 transitions. [2024-10-11 04:47:29,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1575 transitions. [2024-10-11 04:47:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 04:47:29,889 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:29,889 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] [2024-10-11 04:47:29,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 04:47:29,891 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:29,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:29,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2119825339, now seen corresponding path program 1 times [2024-10-11 04:47:29,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:29,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362766119] [2024-10-11 04:47:29,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:29,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:30,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:30,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362766119] [2024-10-11 04:47:30,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362766119] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:30,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:30,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:30,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172531745] [2024-10-11 04:47:30,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:30,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:30,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:30,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:30,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:30,008 INFO L87 Difference]: Start difference. First operand 849 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:30,047 INFO L93 Difference]: Finished difference Result 974 states and 1774 transitions. [2024-10-11 04:47:30,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:30,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-10-11 04:47:30,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:30,051 INFO L225 Difference]: With dead ends: 974 [2024-10-11 04:47:30,051 INFO L226 Difference]: Without dead ends: 906 [2024-10-11 04:47:30,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:30,053 INFO L432 NwaCegarLoop]: 1517 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:30,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1567 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:30,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-10-11 04:47:30,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2024-10-11 04:47:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8414634146341464) internal successors, (1661), 903 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1661 transitions. [2024-10-11 04:47:30,107 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1661 transitions. Word has length 43 [2024-10-11 04:47:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:30,108 INFO L471 AbstractCegarLoop]: Abstraction has 904 states and 1661 transitions. [2024-10-11 04:47:30,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,109 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1661 transitions. [2024-10-11 04:47:30,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-11 04:47:30,112 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:30,112 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] [2024-10-11 04:47:30,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 04:47:30,112 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:30,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:30,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2117680387, now seen corresponding path program 1 times [2024-10-11 04:47:30,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:30,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118466081] [2024-10-11 04:47:30,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:30,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:30,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:30,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118466081] [2024-10-11 04:47:30,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118466081] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:30,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:30,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:30,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119544182] [2024-10-11 04:47:30,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:30,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:30,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:30,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:30,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:30,337 INFO L87 Difference]: Start difference. First operand 904 states and 1661 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:30,474 INFO L93 Difference]: Finished difference Result 1029 states and 1857 transitions. [2024-10-11 04:47:30,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:47:30,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-10-11 04:47:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:30,479 INFO L225 Difference]: With dead ends: 1029 [2024-10-11 04:47:30,479 INFO L226 Difference]: Without dead ends: 906 [2024-10-11 04:47:30,480 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 [2024-10-11 04:47:30,481 INFO L432 NwaCegarLoop]: 1513 mSDtfsCounter, 4440 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4440 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:30,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4440 Valid, 1666 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2024-10-11 04:47:30,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 904. [2024-10-11 04:47:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 902 states have (on average 1.8392461197339247) internal successors, (1659), 903 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1659 transitions. [2024-10-11 04:47:30,503 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1659 transitions. Word has length 43 [2024-10-11 04:47:30,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:30,505 INFO L471 AbstractCegarLoop]: Abstraction has 904 states and 1659 transitions. [2024-10-11 04:47:30,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,506 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1659 transitions. [2024-10-11 04:47:30,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-11 04:47:30,507 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:30,508 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:30,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 04:47:30,509 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:30,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:30,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1351966150, now seen corresponding path program 1 times [2024-10-11 04:47:30,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:30,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169635890] [2024-10-11 04:47:30,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:30,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:30,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:30,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169635890] [2024-10-11 04:47:30,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169635890] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:30,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:30,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 04:47:30,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563637569] [2024-10-11 04:47:30,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:30,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:47:30,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:30,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:47:30,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:47:30,663 INFO L87 Difference]: Start difference. First operand 904 states and 1659 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:30,702 INFO L93 Difference]: Finished difference Result 910 states and 1666 transitions. [2024-10-11 04:47:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:47:30,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-10-11 04:47:30,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:30,711 INFO L225 Difference]: With dead ends: 910 [2024-10-11 04:47:30,711 INFO L226 Difference]: Without dead ends: 908 [2024-10-11 04:47:30,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:47:30,713 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 0 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:30,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4546 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2024-10-11 04:47:30,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2024-10-11 04:47:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.8344370860927153) internal successors, (1662), 907 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1662 transitions. [2024-10-11 04:47:30,739 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1662 transitions. Word has length 44 [2024-10-11 04:47:30,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:30,739 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1662 transitions. [2024-10-11 04:47:30,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,739 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1662 transitions. [2024-10-11 04:47:30,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 04:47:30,740 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:30,740 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] [2024-10-11 04:47:30,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 04:47:30,740 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:30,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash -302650947, now seen corresponding path program 1 times [2024-10-11 04:47:30,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:30,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069901832] [2024-10-11 04:47:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:30,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:30,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:30,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069901832] [2024-10-11 04:47:30,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069901832] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:30,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:30,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110089457] [2024-10-11 04:47:30,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:30,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:30,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:30,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:30,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:30,811 INFO L87 Difference]: Start difference. First operand 908 states and 1662 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:30,844 INFO L93 Difference]: Finished difference Result 1046 states and 1875 transitions. [2024-10-11 04:47:30,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:30,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-10-11 04:47:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:30,851 INFO L225 Difference]: With dead ends: 1046 [2024-10-11 04:47:30,851 INFO L226 Difference]: Without dead ends: 974 [2024-10-11 04:47:30,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:30,852 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 1484 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1615 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 [2024-10-11 04:47:30,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:30,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-10-11 04:47:30,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2024-10-11 04:47:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 970 states have (on average 1.81340206185567) internal successors, (1759), 971 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1759 transitions. [2024-10-11 04:47:30,876 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1759 transitions. Word has length 45 [2024-10-11 04:47:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:30,876 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1759 transitions. [2024-10-11 04:47:30,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1759 transitions. [2024-10-11 04:47:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 04:47:30,878 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:30,878 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] [2024-10-11 04:47:30,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 04:47:30,878 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:30,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:30,879 INFO L85 PathProgramCache]: Analyzing trace with hash -888363075, now seen corresponding path program 1 times [2024-10-11 04:47:30,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:30,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297107135] [2024-10-11 04:47:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:30,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:30,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:30,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297107135] [2024-10-11 04:47:30,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297107135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:30,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:30,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:30,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175051456] [2024-10-11 04:47:30,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:30,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:30,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:30,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:30,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:30,936 INFO L87 Difference]: Start difference. First operand 972 states and 1759 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:30,979 INFO L93 Difference]: Finished difference Result 1326 states and 2299 transitions. [2024-10-11 04:47:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-10-11 04:47:30,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:30,985 INFO L225 Difference]: With dead ends: 1326 [2024-10-11 04:47:30,985 INFO L226 Difference]: Without dead ends: 1137 [2024-10-11 04:47:30,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:30,987 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 1480 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1615 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 [2024-10-11 04:47:30,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1615 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:30,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2024-10-11 04:47:31,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2024-10-11 04:47:31,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1133 states have (on average 1.766107678729038) internal successors, (2001), 1134 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:31,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 2001 transitions. [2024-10-11 04:47:31,016 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 2001 transitions. Word has length 45 [2024-10-11 04:47:31,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:31,017 INFO L471 AbstractCegarLoop]: Abstraction has 1135 states and 2001 transitions. [2024-10-11 04:47:31,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:31,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 2001 transitions. [2024-10-11 04:47:31,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 04:47:31,018 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:31,018 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] [2024-10-11 04:47:31,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 04:47:31,019 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:31,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:31,020 INFO L85 PathProgramCache]: Analyzing trace with hash 370365, now seen corresponding path program 1 times [2024-10-11 04:47:31,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:31,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939078954] [2024-10-11 04:47:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:31,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:31,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939078954] [2024-10-11 04:47:31,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939078954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:31,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:31,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:31,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368771932] [2024-10-11 04:47:31,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:31,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:31,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:31,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:31,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:31,085 INFO L87 Difference]: Start difference. First operand 1135 states and 2001 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:31,125 INFO L93 Difference]: Finished difference Result 1791 states and 2983 transitions. [2024-10-11 04:47:31,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:31,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-10-11 04:47:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:31,135 INFO L225 Difference]: With dead ends: 1791 [2024-10-11 04:47:31,136 INFO L226 Difference]: Without dead ends: 1439 [2024-10-11 04:47:31,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:31,140 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 1478 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1617 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 [2024-10-11 04:47:31,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1617 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:31,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2024-10-11 04:47:31,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1437. [2024-10-11 04:47:31,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1435 states have (on average 1.6982578397212544) internal successors, (2437), 1436 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:31,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2437 transitions. [2024-10-11 04:47:31,176 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2437 transitions. Word has length 45 [2024-10-11 04:47:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:31,178 INFO L471 AbstractCegarLoop]: Abstraction has 1437 states and 2437 transitions. [2024-10-11 04:47:31,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2437 transitions. [2024-10-11 04:47:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-11 04:47:31,179 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:31,179 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] [2024-10-11 04:47:31,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 04:47:31,180 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:31,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:31,183 INFO L85 PathProgramCache]: Analyzing trace with hash -262707011, now seen corresponding path program 1 times [2024-10-11 04:47:31,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:31,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930791738] [2024-10-11 04:47:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:31,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:31,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:31,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930791738] [2024-10-11 04:47:31,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930791738] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:31,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:31,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:31,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413664930] [2024-10-11 04:47:31,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:31,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:31,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:31,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:31,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:31,250 INFO L87 Difference]: Start difference. First operand 1437 states and 2437 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:31,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:31,294 INFO L93 Difference]: Finished difference Result 2649 states and 4207 transitions. [2024-10-11 04:47:31,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:31,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2024-10-11 04:47:31,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:31,301 INFO L225 Difference]: With dead ends: 2649 [2024-10-11 04:47:31,301 INFO L226 Difference]: Without dead ends: 1995 [2024-10-11 04:47:31,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:31,303 INFO L432 NwaCegarLoop]: 1561 mSDtfsCounter, 1482 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1621 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 [2024-10-11 04:47:31,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:31,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2024-10-11 04:47:31,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1993. [2024-10-11 04:47:31,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1991 states have (on average 1.6137619286790557) internal successors, (3213), 1992 states have internal predecessors, (3213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 3213 transitions. [2024-10-11 04:47:31,357 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 3213 transitions. Word has length 45 [2024-10-11 04:47:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:31,357 INFO L471 AbstractCegarLoop]: Abstraction has 1993 states and 3213 transitions. [2024-10-11 04:47:31,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:31,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 3213 transitions. [2024-10-11 04:47:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-11 04:47:31,359 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:31,359 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:31,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 04:47:31,360 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:31,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:31,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2121035277, now seen corresponding path program 1 times [2024-10-11 04:47:31,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:31,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121123073] [2024-10-11 04:47:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:31,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:31,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:31,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121123073] [2024-10-11 04:47:31,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121123073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:31,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:31,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:31,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816131919] [2024-10-11 04:47:31,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:31,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 04:47:31,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:31,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 04:47:31,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 04:47:31,540 INFO L87 Difference]: Start difference. First operand 1993 states and 3213 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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) [2024-10-11 04:47:37,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:37,158 INFO L93 Difference]: Finished difference Result 4248 states and 7522 transitions. [2024-10-11 04:47:37,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 04:47:37,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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 60 [2024-10-11 04:47:37,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:37,170 INFO L225 Difference]: With dead ends: 4248 [2024-10-11 04:47:37,170 INFO L226 Difference]: Without dead ends: 3495 [2024-10-11 04:47:37,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 04:47:37,172 INFO L432 NwaCegarLoop]: 773 mSDtfsCounter, 2364 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 6402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:37,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2364 Valid, 791 Invalid, 6402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-10-11 04:47:37,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2024-10-11 04:47:37,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3495. [2024-10-11 04:47:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 3493 states have (on average 1.4855425135986258) internal successors, (5189), 3494 states have internal predecessors, (5189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 5189 transitions. [2024-10-11 04:47:37,249 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 5189 transitions. Word has length 60 [2024-10-11 04:47:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:37,250 INFO L471 AbstractCegarLoop]: Abstraction has 3495 states and 5189 transitions. [2024-10-11 04:47:37,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 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) [2024-10-11 04:47:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 5189 transitions. [2024-10-11 04:47:37,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:47:37,251 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:37,251 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] [2024-10-11 04:47:37,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 04:47:37,252 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:37,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1070420117, now seen corresponding path program 1 times [2024-10-11 04:47:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:37,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255131939] [2024-10-11 04:47:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:37,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 04:47:37,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:37,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255131939] [2024-10-11 04:47:37,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255131939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:37,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:37,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026356522] [2024-10-11 04:47:37,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:37,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:37,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:37,402 INFO L87 Difference]: Start difference. First operand 3495 states and 5189 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) [2024-10-11 04:47:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:37,586 INFO L93 Difference]: Finished difference Result 8257 states and 12050 transitions. [2024-10-11 04:47:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:47:37,587 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 61 [2024-10-11 04:47:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:37,612 INFO L225 Difference]: With dead ends: 8257 [2024-10-11 04:47:37,613 INFO L226 Difference]: Without dead ends: 7391 [2024-10-11 04:47:37,617 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 [2024-10-11 04:47:37,618 INFO L432 NwaCegarLoop]: 1566 mSDtfsCounter, 4637 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:37,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3284 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:37,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7391 states. [2024-10-11 04:47:37,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7391 to 4535. [2024-10-11 04:47:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4535 states, 4533 states have (on average 1.471211118464593) internal successors, (6669), 4534 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4535 states to 4535 states and 6669 transitions. [2024-10-11 04:47:37,762 INFO L78 Accepts]: Start accepts. Automaton has 4535 states and 6669 transitions. Word has length 61 [2024-10-11 04:47:37,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:37,762 INFO L471 AbstractCegarLoop]: Abstraction has 4535 states and 6669 transitions. [2024-10-11 04:47:37,762 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) [2024-10-11 04:47:37,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4535 states and 6669 transitions. [2024-10-11 04:47:37,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:47:37,764 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:37,764 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] [2024-10-11 04:47:37,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 04:47:37,764 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:37,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:37,765 INFO L85 PathProgramCache]: Analyzing trace with hash 484707989, now seen corresponding path program 1 times [2024-10-11 04:47:37,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:37,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662256695] [2024-10-11 04:47:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:37,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 04:47:37,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662256695] [2024-10-11 04:47:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662256695] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:37,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:37,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:37,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746057648] [2024-10-11 04:47:37,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:37,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:37,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:37,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:37,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:37,879 INFO L87 Difference]: Start difference. First operand 4535 states and 6669 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:38,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:38,105 INFO L93 Difference]: Finished difference Result 9465 states and 13778 transitions. [2024-10-11 04:47:38,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:47:38,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 61 [2024-10-11 04:47:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:38,130 INFO L225 Difference]: With dead ends: 9465 [2024-10-11 04:47:38,131 INFO L226 Difference]: Without dead ends: 8255 [2024-10-11 04:47:38,135 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 [2024-10-11 04:47:38,136 INFO L432 NwaCegarLoop]: 1566 mSDtfsCounter, 4672 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4672 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:38,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4672 Valid, 3304 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:38,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8255 states. [2024-10-11 04:47:38,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8255 to 6175. [2024-10-11 04:47:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6175 states, 6173 states have (on average 1.4574761056212537) internal successors, (8997), 6174 states have internal predecessors, (8997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6175 states to 6175 states and 8997 transitions. [2024-10-11 04:47:38,349 INFO L78 Accepts]: Start accepts. Automaton has 6175 states and 8997 transitions. Word has length 61 [2024-10-11 04:47:38,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:38,349 INFO L471 AbstractCegarLoop]: Abstraction has 6175 states and 8997 transitions. [2024-10-11 04:47:38,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6175 states and 8997 transitions. [2024-10-11 04:47:38,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:47:38,351 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:38,351 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] [2024-10-11 04:47:38,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 04:47:38,352 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:38,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1373441429, now seen corresponding path program 1 times [2024-10-11 04:47:38,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:38,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005861972] [2024-10-11 04:47:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:38,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 04:47:38,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005861972] [2024-10-11 04:47:38,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005861972] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:38,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:38,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:38,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577188248] [2024-10-11 04:47:38,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:38,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:38,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:38,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:38,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:38,461 INFO L87 Difference]: Start difference. First operand 6175 states and 8997 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:38,724 INFO L93 Difference]: Finished difference Result 10673 states and 15498 transitions. [2024-10-11 04:47:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:47:38,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 61 [2024-10-11 04:47:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:38,744 INFO L225 Difference]: With dead ends: 10673 [2024-10-11 04:47:38,744 INFO L226 Difference]: Without dead ends: 9463 [2024-10-11 04:47:38,751 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 [2024-10-11 04:47:38,751 INFO L432 NwaCegarLoop]: 1566 mSDtfsCounter, 4667 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:38,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3318 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:38,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9463 states. [2024-10-11 04:47:38,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9463 to 7383. [2024-10-11 04:47:38,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7383 states, 7381 states have (on average 1.4519712776046607) internal successors, (10717), 7382 states have internal predecessors, (10717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7383 states to 7383 states and 10717 transitions. [2024-10-11 04:47:38,955 INFO L78 Accepts]: Start accepts. Automaton has 7383 states and 10717 transitions. Word has length 61 [2024-10-11 04:47:38,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:38,955 INFO L471 AbstractCegarLoop]: Abstraction has 7383 states and 10717 transitions. [2024-10-11 04:47:38,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:38,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7383 states and 10717 transitions. [2024-10-11 04:47:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 04:47:38,956 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:38,957 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] [2024-10-11 04:47:38,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 04:47:38,957 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:38,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:38,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1110364053, now seen corresponding path program 1 times [2024-10-11 04:47:38,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:38,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878529341] [2024-10-11 04:47:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:38,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 04:47:39,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:39,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878529341] [2024-10-11 04:47:39,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878529341] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:39,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:39,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 04:47:39,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882006636] [2024-10-11 04:47:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:39,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 04:47:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 04:47:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 04:47:39,070 INFO L87 Difference]: Start difference. First operand 7383 states and 10717 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) [2024-10-11 04:47:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:39,390 INFO L93 Difference]: Finished difference Result 11881 states and 17218 transitions. [2024-10-11 04:47:39,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 04:47:39,391 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 61 [2024-10-11 04:47:39,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:39,412 INFO L225 Difference]: With dead ends: 11881 [2024-10-11 04:47:39,412 INFO L226 Difference]: Without dead ends: 10671 [2024-10-11 04:47:39,419 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 [2024-10-11 04:47:39,420 INFO L432 NwaCegarLoop]: 1565 mSDtfsCounter, 4637 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4637 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:39,420 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4637 Valid, 3350 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 04:47:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10671 states. [2024-10-11 04:47:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10671 to 8591. [2024-10-11 04:47:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.448014902782629) internal successors, (12437), 8590 states have internal predecessors, (12437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12437 transitions. [2024-10-11 04:47:39,765 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12437 transitions. Word has length 61 [2024-10-11 04:47:39,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:39,765 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12437 transitions. [2024-10-11 04:47:39,766 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) [2024-10-11 04:47:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12437 transitions. [2024-10-11 04:47:39,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-11 04:47:39,767 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:39,767 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] [2024-10-11 04:47:39,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 04:47:39,768 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:39,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash -263811695, now seen corresponding path program 1 times [2024-10-11 04:47:39,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:39,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871595562] [2024-10-11 04:47:39,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:39,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:39,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:39,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871595562] [2024-10-11 04:47:39,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871595562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:39,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:39,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:39,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491349965] [2024-10-11 04:47:39,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:39,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:39,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:39,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:39,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:39,864 INFO L87 Difference]: Start difference. First operand 8591 states and 12437 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2024-10-11 04:47:40,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:40,031 INFO L93 Difference]: Finished difference Result 14899 states and 21431 transitions. [2024-10-11 04:47:40,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:40,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 62 [2024-10-11 04:47:40,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:40,050 INFO L225 Difference]: With dead ends: 14899 [2024-10-11 04:47:40,050 INFO L226 Difference]: Without dead ends: 8593 [2024-10-11 04:47:40,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:40,062 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 37 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3053 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:40,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3053 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:40,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8593 states. [2024-10-11 04:47:40,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8593 to 8591. [2024-10-11 04:47:40,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 8589 states have (on average 1.4335778321108394) internal successors, (12313), 8590 states have internal predecessors, (12313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12313 transitions. [2024-10-11 04:47:40,275 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12313 transitions. Word has length 62 [2024-10-11 04:47:40,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:40,275 INFO L471 AbstractCegarLoop]: Abstraction has 8591 states and 12313 transitions. [2024-10-11 04:47:40,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2024-10-11 04:47:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12313 transitions. [2024-10-11 04:47:40,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 04:47:40,277 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:40,277 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] [2024-10-11 04:47:40,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 04:47:40,277 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:40,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:40,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1786499741, now seen corresponding path program 1 times [2024-10-11 04:47:40,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:40,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14470474] [2024-10-11 04:47:40,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:40,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14470474] [2024-10-11 04:47:40,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14470474] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:40,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:40,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403240346] [2024-10-11 04:47:40,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:40,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:40,353 INFO L87 Difference]: Start difference. First operand 8591 states and 12313 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:40,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:40,438 INFO L93 Difference]: Finished difference Result 10987 states and 15720 transitions. [2024-10-11 04:47:40,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:40,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-10-11 04:47:40,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:40,449 INFO L225 Difference]: With dead ends: 10987 [2024-10-11 04:47:40,450 INFO L226 Difference]: Without dead ends: 4681 [2024-10-11 04:47:40,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:40,458 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 31 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:40,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3050 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:40,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2024-10-11 04:47:40,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4674. [2024-10-11 04:47:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4672 states have (on average 1.4554794520547945) internal successors, (6800), 4673 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 6800 transitions. [2024-10-11 04:47:40,555 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 6800 transitions. Word has length 63 [2024-10-11 04:47:40,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:40,555 INFO L471 AbstractCegarLoop]: Abstraction has 4674 states and 6800 transitions. [2024-10-11 04:47:40,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:40,555 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 6800 transitions. [2024-10-11 04:47:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-11 04:47:40,556 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:40,556 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] [2024-10-11 04:47:40,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 04:47:40,557 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:40,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:40,557 INFO L85 PathProgramCache]: Analyzing trace with hash 884488671, now seen corresponding path program 1 times [2024-10-11 04:47:40,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:40,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222156359] [2024-10-11 04:47:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:40,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:40,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:40,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222156359] [2024-10-11 04:47:40,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222156359] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:40,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:40,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:40,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411785804] [2024-10-11 04:47:40,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:40,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:40,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:40,653 INFO L87 Difference]: Start difference. First operand 4674 states and 6800 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2024-10-11 04:47:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:40,706 INFO L93 Difference]: Finished difference Result 5866 states and 8474 transitions. [2024-10-11 04:47:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:40,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-11 04:47:40,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:40,713 INFO L225 Difference]: With dead ends: 5866 [2024-10-11 04:47:40,714 INFO L226 Difference]: Without dead ends: 3488 [2024-10-11 04:47:40,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:40,718 INFO L432 NwaCegarLoop]: 1537 mSDtfsCounter, 33 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:40,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3029 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:40,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2024-10-11 04:47:40,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3486. [2024-10-11 04:47:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3484 states have (on average 1.465556831228473) internal successors, (5106), 3485 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 5106 transitions. [2024-10-11 04:47:40,783 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 5106 transitions. Word has length 64 [2024-10-11 04:47:40,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:40,783 INFO L471 AbstractCegarLoop]: Abstraction has 3486 states and 5106 transitions. [2024-10-11 04:47:40,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) [2024-10-11 04:47:40,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 5106 transitions. [2024-10-11 04:47:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-11 04:47:40,784 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:40,785 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] [2024-10-11 04:47:40,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 04:47:40,785 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:40,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:40,785 INFO L85 PathProgramCache]: Analyzing trace with hash 841150381, now seen corresponding path program 1 times [2024-10-11 04:47:40,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:40,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376887321] [2024-10-11 04:47:40,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:40,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:40,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:40,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376887321] [2024-10-11 04:47:40,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376887321] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 04:47:40,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 04:47:40,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 04:47:40,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968510228] [2024-10-11 04:47:40,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 04:47:40,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 04:47:40,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:40,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 04:47:40,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:40,863 INFO L87 Difference]: Start difference. First operand 3486 states and 5106 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) [2024-10-11 04:47:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:40,901 INFO L93 Difference]: Finished difference Result 4084 states and 5933 transitions. [2024-10-11 04:47:40,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 04:47:40,902 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 [2024-10-11 04:47:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:40,908 INFO L225 Difference]: With dead ends: 4084 [2024-10-11 04:47:40,908 INFO L226 Difference]: Without dead ends: 2894 [2024-10-11 04:47:40,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 04:47:40,911 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 30 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:40,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3014 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 04:47:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2024-10-11 04:47:41,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 2892. [2024-10-11 04:47:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2892 states, 2890 states have (on average 1.4775086505190311) internal successors, (4270), 2891 states have internal predecessors, (4270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2892 states to 2892 states and 4270 transitions. [2024-10-11 04:47:41,013 INFO L78 Accepts]: Start accepts. Automaton has 2892 states and 4270 transitions. Word has length 66 [2024-10-11 04:47:41,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:41,013 INFO L471 AbstractCegarLoop]: Abstraction has 2892 states and 4270 transitions. [2024-10-11 04:47:41,014 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) [2024-10-11 04:47:41,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2892 states and 4270 transitions. [2024-10-11 04:47:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-11 04:47:41,015 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:41,015 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] [2024-10-11 04:47:41,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 04:47:41,016 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:41,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash -136343813, now seen corresponding path program 1 times [2024-10-11 04:47:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:41,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666042454] [2024-10-11 04:47:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:44,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:44,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666042454] [2024-10-11 04:47:44,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666042454] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:44,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079193737] [2024-10-11 04:47:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:44,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:44,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:44,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:44,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 04:47:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:44,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 04:47:44,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:44,784 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:44,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:45,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079193737] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:45,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:45,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-11 04:47:45,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092691905] [2024-10-11 04:47:45,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:45,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 04:47:45,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:45,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 04:47:45,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-10-11 04:47:45,607 INFO L87 Difference]: Start difference. First operand 2892 states and 4270 transitions. Second operand has 28 states, 28 states have (on average 6.321428571428571) internal successors, (177), 27 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:49,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:49,584 INFO L93 Difference]: Finished difference Result 5898 states and 8391 transitions. [2024-10-11 04:47:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-11 04:47:49,585 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.321428571428571) internal successors, (177), 27 states have internal predecessors, (177), 0 states have call successors, (0), 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 [2024-10-11 04:47:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:49,594 INFO L225 Difference]: With dead ends: 5898 [2024-10-11 04:47:49,595 INFO L226 Difference]: Without dead ends: 5302 [2024-10-11 04:47:49,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1055, Invalid=4201, Unknown=0, NotChecked=0, Total=5256 [2024-10-11 04:47:49,598 INFO L432 NwaCegarLoop]: 1482 mSDtfsCounter, 28248 mSDsluCounter, 4767 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28248 SdHoareTripleChecker+Valid, 6249 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:49,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28248 Valid, 6249 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-11 04:47:49,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5302 states. [2024-10-11 04:47:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5302 to 5202. [2024-10-11 04:47:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 5200 states have (on average 1.4113461538461538) internal successors, (7339), 5201 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:49,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 7339 transitions. [2024-10-11 04:47:49,717 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 7339 transitions. Word has length 68 [2024-10-11 04:47:49,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:49,717 INFO L471 AbstractCegarLoop]: Abstraction has 5202 states and 7339 transitions. [2024-10-11 04:47:49,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.321428571428571) internal successors, (177), 27 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:49,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 7339 transitions. [2024-10-11 04:47:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-11 04:47:49,719 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:49,719 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:49,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 04:47:49,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:49,920 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:49,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:49,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1122884927, now seen corresponding path program 1 times [2024-10-11 04:47:49,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:49,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773595274] [2024-10-11 04:47:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:49,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:51,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:51,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773595274] [2024-10-11 04:47:51,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773595274] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:51,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865245996] [2024-10-11 04:47:51,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:51,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:51,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:51,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:51,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 04:47:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:51,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 04:47:51,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:51,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:52,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865245996] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:52,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:52,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-10-11 04:47:52,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631833769] [2024-10-11 04:47:52,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:52,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-11 04:47:52,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:52,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-11 04:47:52,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2024-10-11 04:47:52,297 INFO L87 Difference]: Start difference. First operand 5202 states and 7339 transitions. Second operand has 29 states, 29 states have (on average 5.9655172413793105) internal successors, (173), 28 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:54,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:54,021 INFO L93 Difference]: Finished difference Result 16436 states and 22361 transitions. [2024-10-11 04:47:54,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 04:47:54,021 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.9655172413793105) internal successors, (173), 28 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-10-11 04:47:54,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:54,046 INFO L225 Difference]: With dead ends: 16436 [2024-10-11 04:47:54,046 INFO L226 Difference]: Without dead ends: 13530 [2024-10-11 04:47:54,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=665, Invalid=2527, Unknown=0, NotChecked=0, Total=3192 [2024-10-11 04:47:54,056 INFO L432 NwaCegarLoop]: 1492 mSDtfsCounter, 19981 mSDsluCounter, 4851 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19981 SdHoareTripleChecker+Valid, 6343 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:54,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19981 Valid, 6343 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 04:47:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13530 states. [2024-10-11 04:47:54,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13530 to 13430. [2024-10-11 04:47:54,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13430 states, 13428 states have (on average 1.3558981233243967) internal successors, (18207), 13429 states have internal predecessors, (18207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13430 states to 13430 states and 18207 transitions. [2024-10-11 04:47:54,484 INFO L78 Accepts]: Start accepts. Automaton has 13430 states and 18207 transitions. Word has length 69 [2024-10-11 04:47:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:54,484 INFO L471 AbstractCegarLoop]: Abstraction has 13430 states and 18207 transitions. [2024-10-11 04:47:54,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.9655172413793105) internal successors, (173), 28 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 13430 states and 18207 transitions. [2024-10-11 04:47:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-11 04:47:54,487 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:54,488 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 04:47:54,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 04:47:54,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:54,689 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:54,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1351926847, now seen corresponding path program 1 times [2024-10-11 04:47:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:54,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008445155] [2024-10-11 04:47:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:55,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:47:55,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008445155] [2024-10-11 04:47:55,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008445155] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:47:55,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573267807] [2024-10-11 04:47:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:55,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:55,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:47:55,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:47:55,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 04:47:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:47:55,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 04:47:55,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:47:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:55,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:47:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:47:56,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573267807] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:47:56,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:47:56,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-10-11 04:47:56,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867862215] [2024-10-11 04:47:56,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:47:56,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 04:47:56,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:47:56,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 04:47:56,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-10-11 04:47:56,179 INFO L87 Difference]: Start difference. First operand 13430 states and 18207 transitions. Second operand has 25 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 04:47:57,678 INFO L93 Difference]: Finished difference Result 25456 states and 34197 transitions. [2024-10-11 04:47:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-11 04:47:57,679 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 0 states have call successors, (0), 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 69 [2024-10-11 04:47:57,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 04:47:57,699 INFO L225 Difference]: With dead ends: 25456 [2024-10-11 04:47:57,699 INFO L226 Difference]: Without dead ends: 14322 [2024-10-11 04:47:57,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=649, Invalid=2431, Unknown=0, NotChecked=0, Total=3080 [2024-10-11 04:47:57,714 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 16947 mSDsluCounter, 7989 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16947 SdHoareTripleChecker+Valid, 9504 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 04:47:57,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16947 Valid, 9504 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 04:47:57,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14322 states. [2024-10-11 04:47:58,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14322 to 12858. [2024-10-11 04:47:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12858 states, 12856 states have (on average 1.3366521468574983) internal successors, (17184), 12857 states have internal predecessors, (17184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12858 states to 12858 states and 17184 transitions. [2024-10-11 04:47:58,122 INFO L78 Accepts]: Start accepts. Automaton has 12858 states and 17184 transitions. Word has length 69 [2024-10-11 04:47:58,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 04:47:58,123 INFO L471 AbstractCegarLoop]: Abstraction has 12858 states and 17184 transitions. [2024-10-11 04:47:58,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.76) internal successors, (194), 24 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 04:47:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 12858 states and 17184 transitions. [2024-10-11 04:47:58,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 04:47:58,125 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 04:47:58,125 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-11 04:47:58,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 04:47:58,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:47:58,326 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 04:47:58,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 04:47:58,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1418177617, now seen corresponding path program 1 times [2024-10-11 04:47:58,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 04:47:58,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943948452] [2024-10-11 04:47:58,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:47:58,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 04:47:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:00,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:00,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 04:48:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943948452] [2024-10-11 04:48:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943948452] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 04:48:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060896246] [2024-10-11 04:48:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 04:48:00,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 04:48:00,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 04:48:00,243 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 04:48:00,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 04:48:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 04:48:00,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-11 04:48:00,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 04:48:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:02,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 04:48:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 04:48:04,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060896246] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 04:48:04,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 04:48:04,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 18] total 63 [2024-10-11 04:48:04,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088005484] [2024-10-11 04:48:04,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 04:48:04,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-10-11 04:48:04,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 04:48:04,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-10-11 04:48:04,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=3600, Unknown=0, NotChecked=0, Total=3906 [2024-10-11 04:48:04,991 INFO L87 Difference]: Start difference. First operand 12858 states and 17184 transitions. Second operand has 63 states, 63 states have (on average 3.0952380952380953) internal successors, (195), 63 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)