./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.5.ufo.UNBOUNDED.pals+Problem12_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 890f1e18995284b0a908a97d5deeec0465d64ba29b3115b90de791926566ed26 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 21:29:59,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 21:29:59,485 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 21:29:59,489 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 21:29:59,491 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 21:29:59,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 21:29:59,525 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 21:29:59,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 21:29:59,526 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 21:29:59,527 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 21:29:59,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 21:29:59,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 21:29:59,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 21:29:59,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 21:29:59,530 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 21:29:59,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 21:29:59,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 21:29:59,534 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 21:29:59,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 21:29:59,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 21:29:59,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 21:29:59,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 21:29:59,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 21:29:59,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 21:29:59,537 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 21:29:59,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 21:29:59,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 21:29:59,537 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 21:29:59,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 21:29:59,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 21:29:59,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 21:29:59,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 21:29:59,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:29:59,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 21:29:59,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 21:29:59,540 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 21:29:59,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 21:29:59,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 21:29:59,541 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 21:29:59,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 21:29:59,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 21:29:59,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 21:29:59,542 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 890f1e18995284b0a908a97d5deeec0465d64ba29b3115b90de791926566ed26 [2024-10-12 21:29:59,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 21:29:59,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 21:29:59,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 21:29:59,816 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 21:29:59,817 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 21:29:59,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-10-12 21:30:01,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 21:30:01,669 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 21:30:01,671 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-10-12 21:30:01,707 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5989ffaf9/de1963a460504f8fbbe79a982d2962fa/FLAGf60253235 [2024-10-12 21:30:01,724 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5989ffaf9/de1963a460504f8fbbe79a982d2962fa [2024-10-12 21:30:01,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 21:30:01,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 21:30:01,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 21:30:01,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 21:30:01,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 21:30:01,773 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:30:01" (1/1) ... [2024-10-12 21:30:01,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7073fa72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:01, skipping insertion in model container [2024-10-12 21:30:01,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:30:01" (1/1) ... [2024-10-12 21:30:01,889 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 21:30:02,195 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.5.ufo.UNBOUNDED.pals+Problem12_label00.c[11668,11681] [2024-10-12 21:30:02,221 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.5.ufo.UNBOUNDED.pals+Problem12_label00.c[13543,13556] [2024-10-12 21:30:02,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:30:02,892 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 21:30:02,927 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.5.ufo.UNBOUNDED.pals+Problem12_label00.c[11668,11681] [2024-10-12 21:30:02,934 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.5.ufo.UNBOUNDED.pals+Problem12_label00.c[13543,13556] [2024-10-12 21:30:03,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 21:30:03,405 INFO L204 MainTranslator]: Completed translation [2024-10-12 21:30:03,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03 WrapperNode [2024-10-12 21:30:03,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 21:30:03,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 21:30:03,412 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 21:30:03,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 21:30:03,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:03,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:03,801 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5097 [2024-10-12 21:30:03,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 21:30:03,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 21:30:03,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 21:30:03,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 21:30:03,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:03,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:03,894 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:04,031 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]. [2024-10-12 21:30:04,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:04,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:04,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:04,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:04,254 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:04,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:04,324 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 21:30:04,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 21:30:04,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 21:30:04,326 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 21:30:04,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (1/1) ... [2024-10-12 21:30:04,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 21:30:04,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:30:04,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 21:30:04,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 21:30:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 21:30:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 21:30:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 21:30:04,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 21:30:04,565 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 21:30:04,567 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 21:30:08,826 INFO L? ?]: Removed 744 outVars from TransFormulas that were not future-live. [2024-10-12 21:30:08,827 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 21:30:08,896 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 21:30:08,896 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 21:30:08,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:30:08 BoogieIcfgContainer [2024-10-12 21:30:08,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 21:30:08,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 21:30:08,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 21:30:08,903 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 21:30:08,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:30:01" (1/3) ... [2024-10-12 21:30:08,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0a84e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:30:08, skipping insertion in model container [2024-10-12 21:30:08,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:30:03" (2/3) ... [2024-10-12 21:30:08,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0a84e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:30:08, skipping insertion in model container [2024-10-12 21:30:08,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:30:08" (3/3) ... [2024-10-12 21:30:08,907 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label00.c [2024-10-12 21:30:08,924 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 21:30:08,925 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-12 21:30:09,020 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 21:30:09,030 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;@182dfe00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 21:30:09,031 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-12 21:30:09,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:09,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-12 21:30:09,051 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:09,052 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:09,052 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:09,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:09,057 INFO L85 PathProgramCache]: Analyzing trace with hash -619761927, now seen corresponding path program 1 times [2024-10-12 21:30:09,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:09,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865777911] [2024-10-12 21:30:09,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:09,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:09,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:09,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865777911] [2024-10-12 21:30:09,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865777911] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:09,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:09,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 21:30:09,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74172372] [2024-10-12 21:30:09,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:09,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 21:30:09,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:09,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 21:30:09,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 21:30:09,317 INFO L87 Difference]: Start difference. First operand has 836 states, 833 states have (on average 1.9747899159663866) internal successors, (1645), 835 states have internal predecessors, (1645), 0 states have call successors, (0), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:09,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:09,439 INFO L93 Difference]: Finished difference Result 1636 states and 3221 transitions. [2024-10-12 21:30:09,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 21:30:09,442 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-10-12 21:30:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:09,464 INFO L225 Difference]: With dead ends: 1636 [2024-10-12 21:30:09,464 INFO L226 Difference]: Without dead ends: 832 [2024-10-12 21:30:09,471 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 [2024-10-12 21:30:09,479 INFO L432 NwaCegarLoop]: 1573 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, 1573 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 [2024-10-12 21:30:09,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1573 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:09,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2024-10-12 21:30:09,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 832. [2024-10-12 21:30:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 830 states have (on average 1.8963855421686746) internal successors, (1574), 831 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:09,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1574 transitions. [2024-10-12 21:30:09,581 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1574 transitions. Word has length 15 [2024-10-12 21:30:09,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:09,582 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 1574 transitions. [2024-10-12 21:30:09,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:09,582 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1574 transitions. [2024-10-12 21:30:09,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-12 21:30:09,584 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:09,585 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:09,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 21:30:09,585 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:09,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:09,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1556466634, now seen corresponding path program 1 times [2024-10-12 21:30:09,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:09,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642215484] [2024-10-12 21:30:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:09,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:09,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:09,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642215484] [2024-10-12 21:30:09,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642215484] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:09,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:09,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 21:30:09,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39555692] [2024-10-12 21:30:09,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:09,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:09,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:09,752 INFO L87 Difference]: Start difference. First operand 832 states and 1574 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:13,000 INFO L93 Difference]: Finished difference Result 2336 states and 4447 transitions. [2024-10-12 21:30:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:13,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-10-12 21:30:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:13,008 INFO L225 Difference]: With dead ends: 2336 [2024-10-12 21:30:13,008 INFO L226 Difference]: Without dead ends: 1583 [2024-10-12 21:30:13,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:13,011 INFO L432 NwaCegarLoop]: 553 mSDtfsCounter, 938 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:13,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 560 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-10-12 21:30:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2024-10-12 21:30:13,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2024-10-12 21:30:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1581 states have (on average 1.6451612903225807) internal successors, (2601), 1582 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2601 transitions. [2024-10-12 21:30:13,099 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2601 transitions. Word has length 15 [2024-10-12 21:30:13,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:13,100 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2601 transitions. [2024-10-12 21:30:13,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:13,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2601 transitions. [2024-10-12 21:30:13,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-12 21:30:13,102 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:13,102 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] [2024-10-12 21:30:13,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 21:30:13,102 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:13,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:13,104 INFO L85 PathProgramCache]: Analyzing trace with hash 892497994, now seen corresponding path program 1 times [2024-10-12 21:30:13,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:13,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380290637] [2024-10-12 21:30:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:13,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:13,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:13,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380290637] [2024-10-12 21:30:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380290637] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:13,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:13,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:30:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839117182] [2024-10-12 21:30:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:13,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:30:13,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:13,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:30:13,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:30:13,288 INFO L87 Difference]: Start difference. First operand 1583 states and 2601 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:13,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:13,352 INFO L93 Difference]: Finished difference Result 1629 states and 2673 transitions. [2024-10-12 21:30:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:30:13,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-10-12 21:30:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:13,359 INFO L225 Difference]: With dead ends: 1629 [2024-10-12 21:30:13,359 INFO L226 Difference]: Without dead ends: 1583 [2024-10-12 21:30:13,361 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 [2024-10-12 21:30:13,362 INFO L432 NwaCegarLoop]: 1571 mSDtfsCounter, 0 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4678 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:13,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4678 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2024-10-12 21:30:13,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2024-10-12 21:30:13,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1581 states have (on average 1.6255534471853257) internal successors, (2570), 1582 states have internal predecessors, (2570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:13,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2570 transitions. [2024-10-12 21:30:13,395 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2570 transitions. Word has length 21 [2024-10-12 21:30:13,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:13,396 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2570 transitions. [2024-10-12 21:30:13,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:13,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2570 transitions. [2024-10-12 21:30:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-12 21:30:13,400 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:13,400 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] [2024-10-12 21:30:13,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 21:30:13,400 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:13,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:13,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1076852577, now seen corresponding path program 1 times [2024-10-12 21:30:13,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:13,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919100390] [2024-10-12 21:30:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:13,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:13,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:13,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919100390] [2024-10-12 21:30:13,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919100390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:13,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:13,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:30:13,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626683765] [2024-10-12 21:30:13,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:13,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:30:13,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:13,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:30:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:30:13,632 INFO L87 Difference]: Start difference. First operand 1583 states and 2570 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:13,877 INFO L93 Difference]: Finished difference Result 2013 states and 3260 transitions. [2024-10-12 21:30:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 21:30:13,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-10-12 21:30:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:13,884 INFO L225 Difference]: With dead ends: 2013 [2024-10-12 21:30:13,885 INFO L226 Difference]: Without dead ends: 1970 [2024-10-12 21:30:13,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-10-12 21:30:13,887 INFO L432 NwaCegarLoop]: 1534 mSDtfsCounter, 7959 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7959 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:13,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7959 Valid, 2654 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:30:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2024-10-12 21:30:13,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1624. [2024-10-12 21:30:13,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.625154130702836) internal successors, (2636), 1623 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2636 transitions. [2024-10-12 21:30:13,923 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2636 transitions. Word has length 51 [2024-10-12 21:30:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:13,923 INFO L471 AbstractCegarLoop]: Abstraction has 1624 states and 2636 transitions. [2024-10-12 21:30:13,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2636 transitions. [2024-10-12 21:30:13,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-12 21:30:13,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:13,925 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] [2024-10-12 21:30:13,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 21:30:13,926 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:13,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:13,927 INFO L85 PathProgramCache]: Analyzing trace with hash -377541423, now seen corresponding path program 1 times [2024-10-12 21:30:13,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:13,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750998485] [2024-10-12 21:30:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:13,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:14,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:14,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750998485] [2024-10-12 21:30:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750998485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:14,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:14,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:30:14,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819755689] [2024-10-12 21:30:14,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:14,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:14,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:14,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:14,031 INFO L87 Difference]: Start difference. First operand 1624 states and 2636 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:14,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:14,078 INFO L93 Difference]: Finished difference Result 1781 states and 2887 transitions. [2024-10-12 21:30:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:14,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-10-12 21:30:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:14,085 INFO L225 Difference]: With dead ends: 1781 [2024-10-12 21:30:14,085 INFO L226 Difference]: Without dead ends: 1697 [2024-10-12 21:30:14,086 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 [2024-10-12 21:30:14,087 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 1482 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:14,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1597 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:14,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-10-12 21:30:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1693. [2024-10-12 21:30:14,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.6227084565345948) internal successors, (2744), 1692 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2744 transitions. [2024-10-12 21:30:14,129 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2744 transitions. Word has length 53 [2024-10-12 21:30:14,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:14,130 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 2744 transitions. [2024-10-12 21:30:14,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2744 transitions. [2024-10-12 21:30:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-12 21:30:14,132 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:14,132 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] [2024-10-12 21:30:14,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 21:30:14,136 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:14,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:14,136 INFO L85 PathProgramCache]: Analyzing trace with hash -375396471, now seen corresponding path program 1 times [2024-10-12 21:30:14,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:14,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547156033] [2024-10-12 21:30:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:14,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:14,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:14,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547156033] [2024-10-12 21:30:14,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547156033] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:14,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:14,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:30:14,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592778238] [2024-10-12 21:30:14,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:14,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:30:14,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:14,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:30:14,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:30:14,441 INFO L87 Difference]: Start difference. First operand 1693 states and 2744 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:14,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:14,634 INFO L93 Difference]: Finished difference Result 1848 states and 2988 transitions. [2024-10-12 21:30:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:30:14,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2024-10-12 21:30:14,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:14,644 INFO L225 Difference]: With dead ends: 1848 [2024-10-12 21:30:14,644 INFO L226 Difference]: Without dead ends: 1695 [2024-10-12 21:30:14,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-10-12 21:30:14,646 INFO L432 NwaCegarLoop]: 1533 mSDtfsCounter, 7454 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7454 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:14,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7454 Valid, 1790 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:30:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1695 states. [2024-10-12 21:30:14,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1695 to 1693. [2024-10-12 21:30:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1691 states have (on average 1.621525724423418) internal successors, (2742), 1692 states have internal predecessors, (2742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2742 transitions. [2024-10-12 21:30:14,683 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2742 transitions. Word has length 53 [2024-10-12 21:30:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:14,683 INFO L471 AbstractCegarLoop]: Abstraction has 1693 states and 2742 transitions. [2024-10-12 21:30:14,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2742 transitions. [2024-10-12 21:30:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-12 21:30:14,685 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:14,685 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] [2024-10-12 21:30:14,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 21:30:14,685 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:14,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1118535855, now seen corresponding path program 1 times [2024-10-12 21:30:14,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:14,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740221138] [2024-10-12 21:30:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:14,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:14,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:14,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740221138] [2024-10-12 21:30:14,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740221138] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:14,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:14,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 21:30:14,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049928410] [2024-10-12 21:30:14,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:14,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 21:30:14,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:14,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 21:30:14,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 21:30:14,863 INFO L87 Difference]: Start difference. First operand 1693 states and 2742 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2024-10-12 21:30:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:14,900 INFO L93 Difference]: Finished difference Result 1699 states and 2749 transitions. [2024-10-12 21:30:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 21:30:14,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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 54 [2024-10-12 21:30:14,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:14,907 INFO L225 Difference]: With dead ends: 1699 [2024-10-12 21:30:14,907 INFO L226 Difference]: Without dead ends: 1697 [2024-10-12 21:30:14,908 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 [2024-10-12 21:30:14,908 INFO L432 NwaCegarLoop]: 1539 mSDtfsCounter, 0 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4609 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 [2024-10-12 21:30:14,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4609 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:14,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-10-12 21:30:14,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1697. [2024-10-12 21:30:14,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1695 states have (on average 1.6194690265486726) internal successors, (2745), 1696 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2745 transitions. [2024-10-12 21:30:14,942 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2745 transitions. Word has length 54 [2024-10-12 21:30:14,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:14,943 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 2745 transitions. [2024-10-12 21:30:14,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 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) [2024-10-12 21:30:14,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2745 transitions. [2024-10-12 21:30:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 21:30:14,944 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:14,944 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] [2024-10-12 21:30:14,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 21:30:14,944 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:14,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:14,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1027191959, now seen corresponding path program 1 times [2024-10-12 21:30:14,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:14,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326796445] [2024-10-12 21:30:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:14,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:15,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:15,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326796445] [2024-10-12 21:30:15,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326796445] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:15,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:15,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:30:15,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11413276] [2024-10-12 21:30:15,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:15,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:15,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:15,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:15,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:15,002 INFO L87 Difference]: Start difference. First operand 1697 states and 2745 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:15,035 INFO L93 Difference]: Finished difference Result 1995 states and 3205 transitions. [2024-10-12 21:30:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:15,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-10-12 21:30:15,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:15,042 INFO L225 Difference]: With dead ends: 1995 [2024-10-12 21:30:15,042 INFO L226 Difference]: Without dead ends: 1838 [2024-10-12 21:30:15,043 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 [2024-10-12 21:30:15,045 INFO L432 NwaCegarLoop]: 1585 mSDtfsCounter, 1495 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1658 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 [2024-10-12 21:30:15,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1658 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:15,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2024-10-12 21:30:15,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1836. [2024-10-12 21:30:15,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1834 states have (on average 1.6117775354416575) internal successors, (2956), 1835 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2956 transitions. [2024-10-12 21:30:15,084 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2956 transitions. Word has length 55 [2024-10-12 21:30:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:15,084 INFO L471 AbstractCegarLoop]: Abstraction has 1836 states and 2956 transitions. [2024-10-12 21:30:15,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2956 transitions. [2024-10-12 21:30:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 21:30:15,085 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:15,085 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] [2024-10-12 21:30:15,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 21:30:15,086 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:15,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash -987248023, now seen corresponding path program 1 times [2024-10-12 21:30:15,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:15,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899574505] [2024-10-12 21:30:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:15,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:15,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:15,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899574505] [2024-10-12 21:30:15,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899574505] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:15,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:15,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:30:15,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113652497] [2024-10-12 21:30:15,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:15,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:15,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:15,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:15,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:15,140 INFO L87 Difference]: Start difference. First operand 1836 states and 2956 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:15,179 INFO L93 Difference]: Finished difference Result 2396 states and 3810 transitions. [2024-10-12 21:30:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:15,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-10-12 21:30:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:15,188 INFO L225 Difference]: With dead ends: 2396 [2024-10-12 21:30:15,188 INFO L226 Difference]: Without dead ends: 2100 [2024-10-12 21:30:15,227 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 [2024-10-12 21:30:15,228 INFO L432 NwaCegarLoop]: 1583 mSDtfsCounter, 1493 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1660 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 [2024-10-12 21:30:15,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1660 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2024-10-12 21:30:15,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2098. [2024-10-12 21:30:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2096 states have (on average 1.5963740458015268) internal successors, (3346), 2097 states have internal predecessors, (3346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 3346 transitions. [2024-10-12 21:30:15,273 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 3346 transitions. Word has length 55 [2024-10-12 21:30:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:15,273 INFO L471 AbstractCegarLoop]: Abstraction has 2098 states and 3346 transitions. [2024-10-12 21:30:15,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 3346 transitions. [2024-10-12 21:30:15,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 21:30:15,274 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:15,274 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] [2024-10-12 21:30:15,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 21:30:15,275 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:15,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:15,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1612904087, now seen corresponding path program 1 times [2024-10-12 21:30:15,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:15,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392870932] [2024-10-12 21:30:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:15,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:15,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:15,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392870932] [2024-10-12 21:30:15,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392870932] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:15,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:15,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:30:15,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402362066] [2024-10-12 21:30:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:15,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:15,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:15,332 INFO L87 Difference]: Start difference. First operand 2098 states and 3346 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:15,377 INFO L93 Difference]: Finished difference Result 3150 states and 4924 transitions. [2024-10-12 21:30:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:15,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-10-12 21:30:15,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:15,386 INFO L225 Difference]: With dead ends: 3150 [2024-10-12 21:30:15,386 INFO L226 Difference]: Without dead ends: 2592 [2024-10-12 21:30:15,388 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 [2024-10-12 21:30:15,388 INFO L432 NwaCegarLoop]: 1581 mSDtfsCounter, 1491 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1662 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 [2024-10-12 21:30:15,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2592 states. [2024-10-12 21:30:15,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2592 to 2590. [2024-10-12 21:30:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2590 states, 2588 states have (on average 1.5695517774343122) internal successors, (4062), 2589 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2590 states to 2590 states and 4062 transitions. [2024-10-12 21:30:15,447 INFO L78 Accepts]: Start accepts. Automaton has 2590 states and 4062 transitions. Word has length 55 [2024-10-12 21:30:15,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:15,447 INFO L471 AbstractCegarLoop]: Abstraction has 2590 states and 4062 transitions. [2024-10-12 21:30:15,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2590 states and 4062 transitions. [2024-10-12 21:30:15,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-12 21:30:15,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:15,449 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] [2024-10-12 21:30:15,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 21:30:15,449 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:15,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:15,450 INFO L85 PathProgramCache]: Analyzing trace with hash -724170647, now seen corresponding path program 1 times [2024-10-12 21:30:15,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:15,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898733240] [2024-10-12 21:30:15,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:15,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:15,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:15,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898733240] [2024-10-12 21:30:15,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898733240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:15,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:15,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:30:15,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377734094] [2024-10-12 21:30:15,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:15,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:15,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:15,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:15,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:15,518 INFO L87 Difference]: Start difference. First operand 2590 states and 4062 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:15,584 INFO L93 Difference]: Finished difference Result 4562 states and 6960 transitions. [2024-10-12 21:30:15,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:15,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-10-12 21:30:15,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:15,597 INFO L225 Difference]: With dead ends: 4562 [2024-10-12 21:30:15,597 INFO L226 Difference]: Without dead ends: 3512 [2024-10-12 21:30:15,599 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 [2024-10-12 21:30:15,600 INFO L432 NwaCegarLoop]: 1579 mSDtfsCounter, 1489 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1664 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 [2024-10-12 21:30:15,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1664 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:15,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2024-10-12 21:30:15,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 3510. [2024-10-12 21:30:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3510 states, 3508 states have (on average 1.5296465222348916) internal successors, (5366), 3509 states have internal predecessors, (5366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3510 states to 3510 states and 5366 transitions. [2024-10-12 21:30:15,691 INFO L78 Accepts]: Start accepts. Automaton has 3510 states and 5366 transitions. Word has length 55 [2024-10-12 21:30:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:15,692 INFO L471 AbstractCegarLoop]: Abstraction has 3510 states and 5366 transitions. [2024-10-12 21:30:15,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3510 states and 5366 transitions. [2024-10-12 21:30:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-12 21:30:15,692 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:15,693 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] [2024-10-12 21:30:15,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 21:30:15,693 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:15,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:15,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2038301810, now seen corresponding path program 1 times [2024-10-12 21:30:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:15,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714643964] [2024-10-12 21:30:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:15,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:15,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714643964] [2024-10-12 21:30:15,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714643964] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:15,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:15,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:30:15,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684180130] [2024-10-12 21:30:15,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:15,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:15,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:15,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:15,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:15,750 INFO L87 Difference]: Start difference. First operand 3510 states and 5366 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:15,819 INFO L93 Difference]: Finished difference Result 5565 states and 8412 transitions. [2024-10-12 21:30:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-10-12 21:30:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:15,834 INFO L225 Difference]: With dead ends: 5565 [2024-10-12 21:30:15,834 INFO L226 Difference]: Without dead ends: 4442 [2024-10-12 21:30:15,837 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 [2024-10-12 21:30:15,838 INFO L432 NwaCegarLoop]: 1590 mSDtfsCounter, 1494 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1659 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 [2024-10-12 21:30:15,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2024-10-12 21:30:15,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4440. [2024-10-12 21:30:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4440 states, 4438 states have (on average 1.5087877422262281) internal successors, (6696), 4439 states have internal predecessors, (6696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4440 states to 4440 states and 6696 transitions. [2024-10-12 21:30:15,957 INFO L78 Accepts]: Start accepts. Automaton has 4440 states and 6696 transitions. Word has length 57 [2024-10-12 21:30:15,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:15,957 INFO L471 AbstractCegarLoop]: Abstraction has 4440 states and 6696 transitions. [2024-10-12 21:30:15,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:15,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4440 states and 6696 transitions. [2024-10-12 21:30:15,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-12 21:30:15,959 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:15,959 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:15,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 21:30:15,960 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:15,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:15,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1695522485, now seen corresponding path program 1 times [2024-10-12 21:30:15,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716449205] [2024-10-12 21:30:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:15,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 21:30:16,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:16,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716449205] [2024-10-12 21:30:16,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716449205] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:16,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:16,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:30:16,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122013299] [2024-10-12 21:30:16,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:16,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:30:16,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:16,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:30:16,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:30:16,135 INFO L87 Difference]: Start difference. First operand 4440 states and 6696 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:16,576 INFO L93 Difference]: Finished difference Result 19540 states and 28510 transitions. [2024-10-12 21:30:16,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:30:16,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-12 21:30:16,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:16,619 INFO L225 Difference]: With dead ends: 19540 [2024-10-12 21:30:16,620 INFO L226 Difference]: Without dead ends: 16642 [2024-10-12 21:30:16,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:30:16,628 INFO L432 NwaCegarLoop]: 1605 mSDtfsCounter, 6318 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6318 SdHoareTripleChecker+Valid, 3609 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:16,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6318 Valid, 3609 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:30:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16642 states. [2024-10-12 21:30:16,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16642 to 7336. [2024-10-12 21:30:16,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7336 states, 7334 states have (on average 1.478047450231797) internal successors, (10840), 7335 states have internal predecessors, (10840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7336 states to 7336 states and 10840 transitions. [2024-10-12 21:30:16,872 INFO L78 Accepts]: Start accepts. Automaton has 7336 states and 10840 transitions. Word has length 73 [2024-10-12 21:30:16,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:16,873 INFO L471 AbstractCegarLoop]: Abstraction has 7336 states and 10840 transitions. [2024-10-12 21:30:16,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 7336 states and 10840 transitions. [2024-10-12 21:30:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-12 21:30:16,875 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:16,875 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:16,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 21:30:16,875 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:16,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:16,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1655578549, now seen corresponding path program 1 times [2024-10-12 21:30:16,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:16,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543309804] [2024-10-12 21:30:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:16,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 21:30:17,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:17,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543309804] [2024-10-12 21:30:17,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543309804] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:17,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:17,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:30:17,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941513108] [2024-10-12 21:30:17,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:17,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:30:17,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:17,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:30:17,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:30:17,029 INFO L87 Difference]: Start difference. First operand 7336 states and 10840 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:17,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:17,483 INFO L93 Difference]: Finished difference Result 22436 states and 32654 transitions. [2024-10-12 21:30:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:30:17,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-12 21:30:17,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:17,526 INFO L225 Difference]: With dead ends: 22436 [2024-10-12 21:30:17,526 INFO L226 Difference]: Without dead ends: 19538 [2024-10-12 21:30:17,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:30:17,538 INFO L432 NwaCegarLoop]: 1602 mSDtfsCounter, 6338 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6338 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:17,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6338 Valid, 3557 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:30:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19538 states. [2024-10-12 21:30:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19538 to 11688. [2024-10-12 21:30:18,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11688 states, 11686 states have (on average 1.4561013178161903) internal successors, (17016), 11687 states have internal predecessors, (17016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11688 states to 11688 states and 17016 transitions. [2024-10-12 21:30:18,120 INFO L78 Accepts]: Start accepts. Automaton has 11688 states and 17016 transitions. Word has length 73 [2024-10-12 21:30:18,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:18,121 INFO L471 AbstractCegarLoop]: Abstraction has 11688 states and 17016 transitions. [2024-10-12 21:30:18,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:18,121 INFO L276 IsEmpty]: Start isEmpty. Operand 11688 states and 17016 transitions. [2024-10-12 21:30:18,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-12 21:30:18,123 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:18,123 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:18,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 21:30:18,124 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:18,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2013732683, now seen corresponding path program 1 times [2024-10-12 21:30:18,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:18,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359144949] [2024-10-12 21:30:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 21:30:18,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:18,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359144949] [2024-10-12 21:30:18,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359144949] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:18,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:18,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:30:18,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659050039] [2024-10-12 21:30:18,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:18,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:30:18,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:18,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:30:18,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:30:18,312 INFO L87 Difference]: Start difference. First operand 11688 states and 17016 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2024-10-12 21:30:18,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:18,813 INFO L93 Difference]: Finished difference Result 25332 states and 36798 transitions. [2024-10-12 21:30:18,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:30:18,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 73 [2024-10-12 21:30:18,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:18,854 INFO L225 Difference]: With dead ends: 25332 [2024-10-12 21:30:18,854 INFO L226 Difference]: Without dead ends: 22434 [2024-10-12 21:30:18,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:30:18,868 INFO L432 NwaCegarLoop]: 1599 mSDtfsCounter, 6382 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6382 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:18,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6382 Valid, 3520 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:30:18,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22434 states. [2024-10-12 21:30:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22434 to 14584. [2024-10-12 21:30:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14584 states, 14582 states have (on average 1.4511041009463723) internal successors, (21160), 14583 states have internal predecessors, (21160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:19,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14584 states to 14584 states and 21160 transitions. [2024-10-12 21:30:19,367 INFO L78 Accepts]: Start accepts. Automaton has 14584 states and 21160 transitions. Word has length 73 [2024-10-12 21:30:19,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:19,367 INFO L471 AbstractCegarLoop]: Abstraction has 14584 states and 21160 transitions. [2024-10-12 21:30:19,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2024-10-12 21:30:19,367 INFO L276 IsEmpty]: Start isEmpty. Operand 14584 states and 21160 transitions. [2024-10-12 21:30:19,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-12 21:30:19,369 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:19,369 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:19,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 21:30:19,370 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:19,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1392501173, now seen corresponding path program 1 times [2024-10-12 21:30:19,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:19,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295002458] [2024-10-12 21:30:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:19,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 21:30:19,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:19,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295002458] [2024-10-12 21:30:19,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295002458] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:19,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:19,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:30:19,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226603451] [2024-10-12 21:30:19,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:19,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:30:19,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:30:19,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:30:19,517 INFO L87 Difference]: Start difference. First operand 14584 states and 21160 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2024-10-12 21:30:20,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:20,029 INFO L93 Difference]: Finished difference Result 28228 states and 40942 transitions. [2024-10-12 21:30:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:30:20,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 73 [2024-10-12 21:30:20,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:20,082 INFO L225 Difference]: With dead ends: 28228 [2024-10-12 21:30:20,083 INFO L226 Difference]: Without dead ends: 25330 [2024-10-12 21:30:20,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:30:20,097 INFO L432 NwaCegarLoop]: 1603 mSDtfsCounter, 6333 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6333 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:20,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6333 Valid, 3568 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:30:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25330 states. [2024-10-12 21:30:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25330 to 17480. [2024-10-12 21:30:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17480 states, 17478 states have (on average 1.4477629019338598) internal successors, (25304), 17479 states have internal predecessors, (25304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:20,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17480 states to 17480 states and 25304 transitions. [2024-10-12 21:30:20,614 INFO L78 Accepts]: Start accepts. Automaton has 17480 states and 25304 transitions. Word has length 73 [2024-10-12 21:30:20,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:20,614 INFO L471 AbstractCegarLoop]: Abstraction has 17480 states and 25304 transitions. [2024-10-12 21:30:20,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2024-10-12 21:30:20,615 INFO L276 IsEmpty]: Start isEmpty. Operand 17480 states and 25304 transitions. [2024-10-12 21:30:20,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 21:30:20,617 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:20,617 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:20,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 21:30:20,618 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:20,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:20,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1748107533, now seen corresponding path program 1 times [2024-10-12 21:30:20,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:20,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971519058] [2024-10-12 21:30:20,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:20,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:20,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:20,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971519058] [2024-10-12 21:30:20,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971519058] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:20,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:20,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:30:20,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328754622] [2024-10-12 21:30:20,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:20,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:20,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:20,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:20,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:20,717 INFO L87 Difference]: Start difference. First operand 17480 states and 25304 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:20,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:20,919 INFO L93 Difference]: Finished difference Result 28767 states and 41694 transitions. [2024-10-12 21:30:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:20,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2024-10-12 21:30:20,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:20,943 INFO L225 Difference]: With dead ends: 28767 [2024-10-12 21:30:20,943 INFO L226 Difference]: Without dead ends: 12829 [2024-10-12 21:30:20,961 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 [2024-10-12 21:30:20,962 INFO L432 NwaCegarLoop]: 1580 mSDtfsCounter, 50 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3106 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 [2024-10-12 21:30:20,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3106 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:20,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12829 states. [2024-10-12 21:30:21,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12829 to 12827. [2024-10-12 21:30:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12827 states, 12825 states have (on average 1.4592592592592593) internal successors, (18715), 12826 states have internal predecessors, (18715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 18715 transitions. [2024-10-12 21:30:21,332 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 18715 transitions. Word has length 75 [2024-10-12 21:30:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:21,333 INFO L471 AbstractCegarLoop]: Abstraction has 12827 states and 18715 transitions. [2024-10-12 21:30:21,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:21,333 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 18715 transitions. [2024-10-12 21:30:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-12 21:30:21,334 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:21,335 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:21,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 21:30:21,335 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:21,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash -58842896, now seen corresponding path program 1 times [2024-10-12 21:30:21,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:21,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983725822] [2024-10-12 21:30:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:21,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:30:21,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:21,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983725822] [2024-10-12 21:30:21,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983725822] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:21,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:21,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-12 21:30:21,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450033323] [2024-10-12 21:30:21,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:21,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 21:30:21,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:21,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 21:30:21,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 21:30:21,476 INFO L87 Difference]: Start difference. First operand 12827 states and 18715 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:21,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:21,878 INFO L93 Difference]: Finished difference Result 23079 states and 33601 transitions. [2024-10-12 21:30:21,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 21:30:21,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 75 [2024-10-12 21:30:21,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:21,911 INFO L225 Difference]: With dead ends: 23079 [2024-10-12 21:30:21,912 INFO L226 Difference]: Without dead ends: 21029 [2024-10-12 21:30:21,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-12 21:30:21,922 INFO L432 NwaCegarLoop]: 1597 mSDtfsCounter, 6321 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6321 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:21,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6321 Valid, 3692 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 21:30:21,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21029 states. [2024-10-12 21:30:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21029 to 14875. [2024-10-12 21:30:22,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14875 states, 14873 states have (on average 1.4562630269616084) internal successors, (21659), 14874 states have internal predecessors, (21659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:22,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14875 states to 14875 states and 21659 transitions. [2024-10-12 21:30:22,409 INFO L78 Accepts]: Start accepts. Automaton has 14875 states and 21659 transitions. Word has length 75 [2024-10-12 21:30:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:22,409 INFO L471 AbstractCegarLoop]: Abstraction has 14875 states and 21659 transitions. [2024-10-12 21:30:22,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 14875 states and 21659 transitions. [2024-10-12 21:30:22,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-12 21:30:22,412 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:22,412 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:22,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 21:30:22,412 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:22,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash -660146665, now seen corresponding path program 1 times [2024-10-12 21:30:22,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:22,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30469746] [2024-10-12 21:30:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:22,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:22,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:22,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30469746] [2024-10-12 21:30:22,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30469746] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:22,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:22,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:30:22,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207593695] [2024-10-12 21:30:22,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:22,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:22,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:22,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:22,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:22,540 INFO L87 Difference]: Start difference. First operand 14875 states and 21659 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:22,756 INFO L93 Difference]: Finished difference Result 21535 states and 31229 transitions. [2024-10-12 21:30:22,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:22,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-10-12 21:30:22,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:22,768 INFO L225 Difference]: With dead ends: 21535 [2024-10-12 21:30:22,768 INFO L226 Difference]: Without dead ends: 8221 [2024-10-12 21:30:22,783 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 [2024-10-12 21:30:22,783 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 45 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3091 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 [2024-10-12 21:30:22,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3091 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8221 states. [2024-10-12 21:30:23,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8221 to 8219. [2024-10-12 21:30:23,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8219 states, 8217 states have (on average 1.458804916636242) internal successors, (11987), 8218 states have internal predecessors, (11987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:23,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8219 states to 8219 states and 11987 transitions. [2024-10-12 21:30:23,031 INFO L78 Accepts]: Start accepts. Automaton has 8219 states and 11987 transitions. Word has length 76 [2024-10-12 21:30:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:23,031 INFO L471 AbstractCegarLoop]: Abstraction has 8219 states and 11987 transitions. [2024-10-12 21:30:23,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:23,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8219 states and 11987 transitions. [2024-10-12 21:30:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-12 21:30:23,034 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:23,034 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:23,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-12 21:30:23,034 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:23,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:23,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1472275461, now seen corresponding path program 1 times [2024-10-12 21:30:23,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:23,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406256813] [2024-10-12 21:30:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:23,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:23,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:23,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406256813] [2024-10-12 21:30:23,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406256813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:23,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:23,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:30:23,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599508295] [2024-10-12 21:30:23,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:23,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:23,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:23,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:23,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:23,158 INFO L87 Difference]: Start difference. First operand 8219 states and 11987 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:23,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:23,293 INFO L93 Difference]: Finished difference Result 11551 states and 16721 transitions. [2024-10-12 21:30:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:23,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-10-12 21:30:23,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:23,301 INFO L225 Difference]: With dead ends: 11551 [2024-10-12 21:30:23,302 INFO L226 Difference]: Without dead ends: 4893 [2024-10-12 21:30:23,309 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 [2024-10-12 21:30:23,310 INFO L432 NwaCegarLoop]: 1566 mSDtfsCounter, 42 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3076 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 [2024-10-12 21:30:23,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3076 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:23,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2024-10-12 21:30:23,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 4891. [2024-10-12 21:30:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4891 states, 4889 states have (on average 1.4733074248312539) internal successors, (7203), 4890 states have internal predecessors, (7203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:23,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4891 states to 4891 states and 7203 transitions. [2024-10-12 21:30:23,460 INFO L78 Accepts]: Start accepts. Automaton has 4891 states and 7203 transitions. Word has length 78 [2024-10-12 21:30:23,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:23,460 INFO L471 AbstractCegarLoop]: Abstraction has 4891 states and 7203 transitions. [2024-10-12 21:30:23,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4891 states and 7203 transitions. [2024-10-12 21:30:23,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-10-12 21:30:23,462 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:23,462 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:23,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-12 21:30:23,463 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:23,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:23,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1500171405, now seen corresponding path program 1 times [2024-10-12 21:30:23,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:23,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208993122] [2024-10-12 21:30:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:23,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:23,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:23,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208993122] [2024-10-12 21:30:23,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208993122] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:23,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:23,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:30:23,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954531647] [2024-10-12 21:30:23,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:23,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:23,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:23,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:23,579 INFO L87 Difference]: Start difference. First operand 4891 states and 7203 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:23,661 INFO L93 Difference]: Finished difference Result 6559 states and 9545 transitions. [2024-10-12 21:30:23,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:23,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2024-10-12 21:30:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:23,667 INFO L225 Difference]: With dead ends: 6559 [2024-10-12 21:30:23,667 INFO L226 Difference]: Without dead ends: 3229 [2024-10-12 21:30:23,671 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 [2024-10-12 21:30:23,672 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 39 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3061 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 [2024-10-12 21:30:23,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3061 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:23,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2024-10-12 21:30:23,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 3227. [2024-10-12 21:30:23,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 3225 states have (on average 1.49984496124031) internal successors, (4837), 3226 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 4837 transitions. [2024-10-12 21:30:23,734 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 4837 transitions. Word has length 80 [2024-10-12 21:30:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:23,734 INFO L471 AbstractCegarLoop]: Abstraction has 3227 states and 4837 transitions. [2024-10-12 21:30:23,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:23,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 4837 transitions. [2024-10-12 21:30:23,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-10-12 21:30:23,736 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:23,736 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:23,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-12 21:30:23,737 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:23,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:23,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1621752735, now seen corresponding path program 1 times [2024-10-12 21:30:23,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:23,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066710429] [2024-10-12 21:30:23,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:23,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:23,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:23,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:23,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:23,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066710429] [2024-10-12 21:30:23,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066710429] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:30:23,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:30:23,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:30:23,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426899919] [2024-10-12 21:30:23,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:30:23,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:30:23,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:23,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:30:23,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:30:23,820 INFO L87 Difference]: Start difference. First operand 3227 states and 4837 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:23,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:23,861 INFO L93 Difference]: Finished difference Result 4063 states and 5996 transitions. [2024-10-12 21:30:23,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:30:23,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2024-10-12 21:30:23,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:23,865 INFO L225 Difference]: With dead ends: 4063 [2024-10-12 21:30:23,865 INFO L226 Difference]: Without dead ends: 2397 [2024-10-12 21:30:23,867 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 [2024-10-12 21:30:23,867 INFO L432 NwaCegarLoop]: 1552 mSDtfsCounter, 36 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3046 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 [2024-10-12 21:30:23,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3046 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 21:30:23,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2024-10-12 21:30:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 2395. [2024-10-12 21:30:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 2393 states have (on average 1.532386126201421) internal successors, (3667), 2394 states have internal predecessors, (3667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 3667 transitions. [2024-10-12 21:30:23,909 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 3667 transitions. Word has length 82 [2024-10-12 21:30:23,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:23,909 INFO L471 AbstractCegarLoop]: Abstraction has 2395 states and 3667 transitions. [2024-10-12 21:30:23,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 3667 transitions. [2024-10-12 21:30:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-12 21:30:23,910 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:23,911 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:23,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-12 21:30:23,911 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:23,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash -481397041, now seen corresponding path program 1 times [2024-10-12 21:30:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:23,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621693342] [2024-10-12 21:30:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:23,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:24,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:24,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621693342] [2024-10-12 21:30:24,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621693342] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:30:24,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143268116] [2024-10-12 21:30:24,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:24,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:30:24,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:30:24,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:30:24,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 21:30:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:25,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 21:30:25,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:30:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:30:25,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:30:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 21:30:25,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143268116] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:30:25,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:30:25,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2024-10-12 21:30:25,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698306680] [2024-10-12 21:30:25,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:30:25,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 21:30:25,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:25,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 21:30:25,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-10-12 21:30:25,586 INFO L87 Difference]: Start difference. First operand 2395 states and 3667 transitions. Second operand has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:27,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:27,955 INFO L93 Difference]: Finished difference Result 7990 states and 11205 transitions. [2024-10-12 21:30:27,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-12 21:30:27,956 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 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 84 [2024-10-12 21:30:27,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:27,966 INFO L225 Difference]: With dead ends: 7990 [2024-10-12 21:30:27,966 INFO L226 Difference]: Without dead ends: 7156 [2024-10-12 21:30:27,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=714, Invalid=2946, Unknown=0, NotChecked=0, Total=3660 [2024-10-12 21:30:27,971 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 15050 mSDsluCounter, 6379 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15050 SdHoareTripleChecker+Valid, 7897 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:27,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15050 Valid, 7897 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:30:27,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7156 states. [2024-10-12 21:30:28,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7156 to 7108. [2024-10-12 21:30:28,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 7106 states have (on average 1.3627920067548551) internal successors, (9684), 7107 states have internal predecessors, (9684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:28,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 9684 transitions. [2024-10-12 21:30:28,123 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 9684 transitions. Word has length 84 [2024-10-12 21:30:28,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:28,123 INFO L471 AbstractCegarLoop]: Abstraction has 7108 states and 9684 transitions. [2024-10-12 21:30:28,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.222222222222221) internal successors, (238), 18 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 9684 transitions. [2024-10-12 21:30:28,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 21:30:28,125 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:28,125 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:28,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 21:30:28,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-12 21:30:28,326 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:28,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:28,326 INFO L85 PathProgramCache]: Analyzing trace with hash 560441504, now seen corresponding path program 1 times [2024-10-12 21:30:28,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:28,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447989620] [2024-10-12 21:30:28,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:28,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:29,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:29,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447989620] [2024-10-12 21:30:29,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447989620] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:30:29,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661178456] [2024-10-12 21:30:29,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:29,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:30:29,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:30:29,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:30:29,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 21:30:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:29,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 21:30:29,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:30:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:29,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:30:30,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:30,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661178456] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:30:30,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:30:30,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-10-12 21:30:30,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312571565] [2024-10-12 21:30:30,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:30:30,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-12 21:30:30,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:30,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-12 21:30:30,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2024-10-12 21:30:30,569 INFO L87 Difference]: Start difference. First operand 7108 states and 9684 transitions. Second operand has 29 states, 29 states have (on average 7.344827586206897) internal successors, (213), 28 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:32,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:32,399 INFO L93 Difference]: Finished difference Result 28180 states and 36965 transitions. [2024-10-12 21:30:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-12 21:30:32,400 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.344827586206897) internal successors, (213), 28 states have internal predecessors, (213), 0 states have call successors, (0), 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 85 [2024-10-12 21:30:32,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:32,423 INFO L225 Difference]: With dead ends: 28180 [2024-10-12 21:30:32,423 INFO L226 Difference]: Without dead ends: 23261 [2024-10-12 21:30:32,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=699, Invalid=2493, Unknown=0, NotChecked=0, Total=3192 [2024-10-12 21:30:32,429 INFO L432 NwaCegarLoop]: 1501 mSDtfsCounter, 21052 mSDsluCounter, 4959 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21052 SdHoareTripleChecker+Valid, 6460 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:32,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21052 Valid, 6460 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 21:30:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23261 states. [2024-10-12 21:30:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23261 to 23097. [2024-10-12 21:30:32,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23097 states, 23095 states have (on average 1.3048278848235548) internal successors, (30135), 23096 states have internal predecessors, (30135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23097 states to 23097 states and 30135 transitions. [2024-10-12 21:30:33,009 INFO L78 Accepts]: Start accepts. Automaton has 23097 states and 30135 transitions. Word has length 85 [2024-10-12 21:30:33,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:33,010 INFO L471 AbstractCegarLoop]: Abstraction has 23097 states and 30135 transitions. [2024-10-12 21:30:33,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.344827586206897) internal successors, (213), 28 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 23097 states and 30135 transitions. [2024-10-12 21:30:33,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-12 21:30:33,012 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:33,012 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:33,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-12 21:30:33,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-12 21:30:33,213 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:33,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:33,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1629608864, now seen corresponding path program 1 times [2024-10-12 21:30:33,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:33,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852936984] [2024-10-12 21:30:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:33,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:33,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:33,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852936984] [2024-10-12 21:30:33,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852936984] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:30:33,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406511240] [2024-10-12 21:30:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:33,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:30:33,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:30:33,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:30:33,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 21:30:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:33,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-12 21:30:33,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:30:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:34,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:30:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:35,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406511240] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:30:35,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:30:35,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-10-12 21:30:35,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48339865] [2024-10-12 21:30:35,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:30:35,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 21:30:35,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:35,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 21:30:35,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2024-10-12 21:30:35,384 INFO L87 Difference]: Start difference. First operand 23097 states and 30135 transitions. Second operand has 26 states, 26 states have (on average 9.192307692307692) internal successors, (239), 25 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:37,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:30:37,818 INFO L93 Difference]: Finished difference Result 66745 states and 86434 transitions. [2024-10-12 21:30:37,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-12 21:30:37,819 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.192307692307692) internal successors, (239), 25 states have internal predecessors, (239), 0 states have call successors, (0), 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 85 [2024-10-12 21:30:37,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:30:37,866 INFO L225 Difference]: With dead ends: 66745 [2024-10-12 21:30:37,866 INFO L226 Difference]: Without dead ends: 46438 [2024-10-12 21:30:37,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=656, Invalid=2536, Unknown=0, NotChecked=0, Total=3192 [2024-10-12 21:30:37,878 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 21631 mSDsluCounter, 8289 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21631 SdHoareTripleChecker+Valid, 9824 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 21:30:37,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21631 Valid, 9824 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 21:30:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46438 states. [2024-10-12 21:30:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46438 to 45562. [2024-10-12 21:30:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45562 states, 45560 states have (on average 1.2663520632133451) internal successors, (57695), 45561 states have internal predecessors, (57695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45562 states to 45562 states and 57695 transitions. [2024-10-12 21:30:39,228 INFO L78 Accepts]: Start accepts. Automaton has 45562 states and 57695 transitions. Word has length 85 [2024-10-12 21:30:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:30:39,229 INFO L471 AbstractCegarLoop]: Abstraction has 45562 states and 57695 transitions. [2024-10-12 21:30:39,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.192307692307692) internal successors, (239), 25 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:30:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 45562 states and 57695 transitions. [2024-10-12 21:30:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 21:30:39,231 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:30:39,231 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:30:39,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 21:30:39,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:30:39,432 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:30:39,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:30:39,433 INFO L85 PathProgramCache]: Analyzing trace with hash -959833651, now seen corresponding path program 1 times [2024-10-12 21:30:39,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:30:39,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098614763] [2024-10-12 21:30:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:39,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:30:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:39,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:30:39,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098614763] [2024-10-12 21:30:39,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098614763] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:30:39,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320027649] [2024-10-12 21:30:39,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:30:39,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:30:39,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:30:39,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:30:39,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 21:30:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:30:39,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-12 21:30:39,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:30:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:42,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:30:46,723 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:30:46,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320027649] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:30:46,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:30:46,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 22] total 48 [2024-10-12 21:30:46,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040596298] [2024-10-12 21:30:46,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:30:46,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-12 21:30:46,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:30:46,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-12 21:30:46,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1907, Unknown=0, NotChecked=0, Total=2256 [2024-10-12 21:30:46,726 INFO L87 Difference]: Start difference. First operand 45562 states and 57695 transitions. Second operand has 48 states, 48 states have (on average 4.895833333333333) internal successors, (235), 48 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:31:01,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:31:01,139 INFO L93 Difference]: Finished difference Result 121718 states and 155050 transitions. [2024-10-12 21:31:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-10-12 21:31:01,139 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 4.895833333333333) internal successors, (235), 48 states have internal predecessors, (235), 0 states have call successors, (0), 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 86 [2024-10-12 21:31:01,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:31:01,226 INFO L225 Difference]: With dead ends: 121718 [2024-10-12 21:31:01,226 INFO L226 Difference]: Without dead ends: 79555 [2024-10-12 21:31:01,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5467 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=3577, Invalid=12679, Unknown=0, NotChecked=0, Total=16256 [2024-10-12 21:31:01,261 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 25825 mSDsluCounter, 13027 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25825 SdHoareTripleChecker+Valid, 14575 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-10-12 21:31:01,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25825 Valid, 14575 Invalid, 2295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-10-12 21:31:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79555 states. [2024-10-12 21:31:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79555 to 45717. [2024-10-12 21:31:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45717 states, 45715 states have (on average 1.2589959531882315) internal successors, (57555), 45716 states have internal predecessors, (57555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:31:03,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45717 states to 45717 states and 57555 transitions. [2024-10-12 21:31:03,714 INFO L78 Accepts]: Start accepts. Automaton has 45717 states and 57555 transitions. Word has length 86 [2024-10-12 21:31:03,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:31:03,714 INFO L471 AbstractCegarLoop]: Abstraction has 45717 states and 57555 transitions. [2024-10-12 21:31:03,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 4.895833333333333) internal successors, (235), 48 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:31:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 45717 states and 57555 transitions. [2024-10-12 21:31:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-12 21:31:03,716 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:31:03,716 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:31:03,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-12 21:31:03,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-12 21:31:03,917 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:31:03,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:31:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash 150661685, now seen corresponding path program 1 times [2024-10-12 21:31:03,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:31:03,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998988769] [2024-10-12 21:31:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:31:03,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:31:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:31:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:31:03,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:31:03,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998988769] [2024-10-12 21:31:03,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998988769] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 21:31:03,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 21:31:03,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 21:31:03,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028790024] [2024-10-12 21:31:03,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 21:31:03,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 21:31:03,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:31:03,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 21:31:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 21:31:03,996 INFO L87 Difference]: Start difference. First operand 45717 states and 57555 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:31:07,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:31:07,887 INFO L93 Difference]: Finished difference Result 48723 states and 62482 transitions. [2024-10-12 21:31:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 21:31:07,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2024-10-12 21:31:07,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:31:07,940 INFO L225 Difference]: With dead ends: 48723 [2024-10-12 21:31:07,940 INFO L226 Difference]: Without dead ends: 47219 [2024-10-12 21:31:07,951 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 [2024-10-12 21:31:07,951 INFO L432 NwaCegarLoop]: 1250 mSDtfsCounter, 753 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-10-12 21:31:07,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1360 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-10-12 21:31:07,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47219 states. [2024-10-12 21:31:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47219 to 47219. [2024-10-12 21:31:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47219 states, 47217 states have (on average 1.264608086070695) internal successors, (59711), 47218 states have internal predecessors, (59711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:31:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47219 states to 47219 states and 59711 transitions. [2024-10-12 21:31:09,839 INFO L78 Accepts]: Start accepts. Automaton has 47219 states and 59711 transitions. Word has length 86 [2024-10-12 21:31:09,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 21:31:09,839 INFO L471 AbstractCegarLoop]: Abstraction has 47219 states and 59711 transitions. [2024-10-12 21:31:09,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:31:09,839 INFO L276 IsEmpty]: Start isEmpty. Operand 47219 states and 59711 transitions. [2024-10-12 21:31:09,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-12 21:31:09,841 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 21:31:09,841 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 21:31:09,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-10-12 21:31:09,841 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 21:31:09,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 21:31:09,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1251538414, now seen corresponding path program 1 times [2024-10-12 21:31:09,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 21:31:09,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784758530] [2024-10-12 21:31:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:31:09,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 21:31:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:31:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:31:10,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 21:31:10,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784758530] [2024-10-12 21:31:10,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784758530] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 21:31:10,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538686836] [2024-10-12 21:31:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 21:31:10,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 21:31:10,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 21:31:10,216 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 21:31:10,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 21:31:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 21:31:10,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 21:31:10,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 21:31:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:31:10,748 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 21:31:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 21:31:11,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538686836] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 21:31:11,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 21:31:11,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-10-12 21:31:11,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116653866] [2024-10-12 21:31:11,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 21:31:11,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 21:31:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 21:31:11,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 21:31:11,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-10-12 21:31:11,309 INFO L87 Difference]: Start difference. First operand 47219 states and 59711 transitions. Second operand has 21 states, 21 states have (on average 9.428571428571429) internal successors, (198), 20 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 21:31:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 21:31:15,206 INFO L93 Difference]: Finished difference Result 134359 states and 169304 transitions. [2024-10-12 21:31:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 21:31:15,207 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.428571428571429) internal successors, (198), 20 states have internal predecessors, (198), 0 states have call successors, (0), 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 87 [2024-10-12 21:31:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 21:31:15,306 INFO L225 Difference]: With dead ends: 134359 [2024-10-12 21:31:15,306 INFO L226 Difference]: Without dead ends: 93927 [2024-10-12 21:31:15,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2024-10-12 21:31:15,323 INFO L432 NwaCegarLoop]: 1520 mSDtfsCounter, 16762 mSDsluCounter, 4850 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16762 SdHoareTripleChecker+Valid, 6370 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 21:31:15,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16762 Valid, 6370 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 21:31:15,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93927 states.