./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.6.ufo.BOUNDED-12.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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.6.ufo.BOUNDED-12.pals+Problem12_label02.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 1453ce65a083ed4648e89d203499c9b326168da5d5976c2f3d65b9d62166ef3b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:51:04,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:51:04,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:51:04,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:51:04,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:51:04,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:51:04,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:51:04,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:51:04,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:51:04,634 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:51:04,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:51:04,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:51:04,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:51:04,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:51:04,638 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:51:04,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:51:04,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:51:04,644 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:51:04,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:51:04,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:51:04,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:51:04,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:51:04,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:51:04,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:51:04,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:51:04,648 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:51:04,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:51:04,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:51:04,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:51:04,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:51:04,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:51:04,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:51:04,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:51:04,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:51:04,652 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:51:04,652 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:51:04,652 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:51:04,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:51:04,653 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:51:04,653 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:51:04,653 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:51:04,654 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:51:04,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1453ce65a083ed4648e89d203499c9b326168da5d5976c2f3d65b9d62166ef3b [2024-10-24 02:51:04,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:51:04,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:51:04,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:51:04,950 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:51:04,950 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:51:04,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c [2024-10-24 02:51:06,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:51:06,827 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:51:06,828 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c [2024-10-24 02:51:06,865 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ecdff07/3ded9ea68a5d476ab1c5c1b231a6a0d6/FLAG45a400644 [2024-10-24 02:51:06,959 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77ecdff07/3ded9ea68a5d476ab1c5c1b231a6a0d6 [2024-10-24 02:51:06,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:51:06,964 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:51:06,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:51:06,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:51:06,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:51:06,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:51:06" (1/1) ... [2024-10-24 02:51:06,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5029a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:06, skipping insertion in model container [2024-10-24 02:51:06,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:51:06" (1/1) ... [2024-10-24 02:51:07,080 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:51:07,481 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.6.ufo.BOUNDED-12.pals+Problem12_label02.c[15482,15495] [2024-10-24 02:51:07,556 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.6.ufo.BOUNDED-12.pals+Problem12_label02.c[22772,22785] [2024-10-24 02:51:08,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:51:08,206 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:51:08,252 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.6.ufo.BOUNDED-12.pals+Problem12_label02.c[15482,15495] [2024-10-24 02:51:08,268 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.6.ufo.BOUNDED-12.pals+Problem12_label02.c[22772,22785] [2024-10-24 02:51:08,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:51:08,662 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:51:08,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08 WrapperNode [2024-10-24 02:51:08,663 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:51:08,664 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:51:08,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:51:08,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:51:08,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:08,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:09,028 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5159 [2024-10-24 02:51:09,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:51:09,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:51:09,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:51:09,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:51:09,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:09,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:09,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:09,293 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]. [2024-10-24 02:51:09,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:09,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:09,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:09,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:09,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:09,547 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:09,616 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:51:09,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:51:09,619 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:51:09,619 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:51:09,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (1/1) ... [2024-10-24 02:51:09,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:51:09,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:51:09,653 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) [2024-10-24 02:51:09,656 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 [2024-10-24 02:51:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:51:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:51:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:51:09,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:51:09,799 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:51:09,801 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:51:13,870 INFO L? ?]: Removed 749 outVars from TransFormulas that were not future-live. [2024-10-24 02:51:13,871 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:51:13,946 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:51:13,946 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 02:51:13,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:13 BoogieIcfgContainer [2024-10-24 02:51:13,946 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:51:13,949 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:51:13,949 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:51:13,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:51:13,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:51:06" (1/3) ... [2024-10-24 02:51:13,954 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70486e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:51:13, skipping insertion in model container [2024-10-24 02:51:13,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:51:08" (2/3) ... [2024-10-24 02:51:13,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70486e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:51:13, skipping insertion in model container [2024-10-24 02:51:13,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:51:13" (3/3) ... [2024-10-24 02:51:13,961 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label02.c [2024-10-24 02:51:13,974 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:51:13,974 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:51:14,057 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:51:14,064 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;@22f4e3fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:51:14,065 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:51:14,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-24 02:51:14,085 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:14,085 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] [2024-10-24 02:51:14,086 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:14,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:14,092 INFO L85 PathProgramCache]: Analyzing trace with hash -713532304, now seen corresponding path program 1 times [2024-10-24 02:51:14,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:14,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738613830] [2024-10-24 02:51:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:14,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:14,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:14,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738613830] [2024-10-24 02:51:14,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738613830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:14,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:14,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 02:51:14,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849689417] [2024-10-24 02:51:14,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:14,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 02:51:14,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:14,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 02:51:14,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 02:51:14,405 INFO L87 Difference]: Start difference. First operand has 849 states, 846 states have (on average 1.9739952718676124) internal successors, (1670), 848 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:14,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:14,516 INFO L93 Difference]: Finished difference Result 1654 states and 3254 transitions. [2024-10-24 02:51:14,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 02:51:14,522 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-10-24 02:51:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:14,542 INFO L225 Difference]: With dead ends: 1654 [2024-10-24 02:51:14,543 INFO L226 Difference]: Without dead ends: 845 [2024-10-24 02:51:14,551 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 [2024-10-24 02:51:14,554 INFO L432 NwaCegarLoop]: 1599 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:14,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1599 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:14,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-10-24 02:51:14,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2024-10-24 02:51:14,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.896797153024911) internal successors, (1599), 844 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:14,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1599 transitions. [2024-10-24 02:51:14,639 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1599 transitions. Word has length 23 [2024-10-24 02:51:14,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:14,639 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1599 transitions. [2024-10-24 02:51:14,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:14,640 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1599 transitions. [2024-10-24 02:51:14,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-10-24 02:51:14,641 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:14,641 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] [2024-10-24 02:51:14,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:51:14,642 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:14,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:14,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1892491250, now seen corresponding path program 1 times [2024-10-24 02:51:14,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:14,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856268225] [2024-10-24 02:51:14,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:14,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:14,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:14,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856268225] [2024-10-24 02:51:14,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856268225] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:14,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:14,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:51:14,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627970517] [2024-10-24 02:51:14,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:14,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:51:14,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:51:14,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:51:14,864 INFO L87 Difference]: Start difference. First operand 845 states and 1599 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:14,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:14,990 INFO L93 Difference]: Finished difference Result 895 states and 1678 transitions. [2024-10-24 02:51:14,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:51:14,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2024-10-24 02:51:14,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:14,997 INFO L225 Difference]: With dead ends: 895 [2024-10-24 02:51:14,997 INFO L226 Difference]: Without dead ends: 845 [2024-10-24 02:51:14,998 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 [2024-10-24 02:51:14,999 INFO L432 NwaCegarLoop]: 1596 mSDtfsCounter, 0 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:15,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4744 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:15,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-10-24 02:51:15,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2024-10-24 02:51:15,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.849347568208778) internal successors, (1559), 844 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1559 transitions. [2024-10-24 02:51:15,026 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1559 transitions. Word has length 23 [2024-10-24 02:51:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:15,026 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1559 transitions. [2024-10-24 02:51:15,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1559 transitions. [2024-10-24 02:51:15,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 02:51:15,028 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:15,028 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:15,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:51:15,029 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:15,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash -808348940, now seen corresponding path program 1 times [2024-10-24 02:51:15,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:15,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518465483] [2024-10-24 02:51:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:15,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:15,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:15,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518465483] [2024-10-24 02:51:15,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518465483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:15,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:15,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:15,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966663442] [2024-10-24 02:51:15,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:15,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:15,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:15,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:15,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:15,405 INFO L87 Difference]: Start difference. First operand 845 states and 1559 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:15,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:15,801 INFO L93 Difference]: Finished difference Result 1409 states and 2471 transitions. [2024-10-24 02:51:15,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 02:51:15,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 02:51:15,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:15,807 INFO L225 Difference]: With dead ends: 1409 [2024-10-24 02:51:15,808 INFO L226 Difference]: Without dead ends: 1362 [2024-10-24 02:51:15,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2024-10-24 02:51:15,809 INFO L432 NwaCegarLoop]: 1552 mSDtfsCounter, 9675 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:15,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 3624 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 02:51:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2024-10-24 02:51:15,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 890. [2024-10-24 02:51:15,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 888 states have (on average 1.837837837837838) internal successors, (1632), 889 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:15,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1632 transitions. [2024-10-24 02:51:15,831 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1632 transitions. Word has length 62 [2024-10-24 02:51:15,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:15,834 INFO L471 AbstractCegarLoop]: Abstraction has 890 states and 1632 transitions. [2024-10-24 02:51:15,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1632 transitions. [2024-10-24 02:51:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-24 02:51:15,838 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:15,839 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:15,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:51:15,839 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:15,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:15,840 INFO L85 PathProgramCache]: Analyzing trace with hash -382311835, now seen corresponding path program 1 times [2024-10-24 02:51:15,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:15,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438268853] [2024-10-24 02:51:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:16,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:16,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438268853] [2024-10-24 02:51:16,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438268853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:16,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:16,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:16,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384864137] [2024-10-24 02:51:16,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:16,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:51:16,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:51:16,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:51:16,067 INFO L87 Difference]: Start difference. First operand 890 states and 1632 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:21,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:21,616 INFO L93 Difference]: Finished difference Result 3145 states and 5941 transitions. [2024-10-24 02:51:21,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:51:21,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-24 02:51:21,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:21,626 INFO L225 Difference]: With dead ends: 3145 [2024-10-24 02:51:21,626 INFO L226 Difference]: Without dead ends: 2392 [2024-10-24 02:51:21,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 02:51:21,628 INFO L432 NwaCegarLoop]: 792 mSDtfsCounter, 2428 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:21,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2428 Valid, 810 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-10-24 02:51:21,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2024-10-24 02:51:21,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2392. [2024-10-24 02:51:21,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 2390 states have (on average 1.5673640167364016) internal successors, (3746), 2391 states have internal predecessors, (3746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:21,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3746 transitions. [2024-10-24 02:51:21,683 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3746 transitions. Word has length 62 [2024-10-24 02:51:21,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:21,684 INFO L471 AbstractCegarLoop]: Abstraction has 2392 states and 3746 transitions. [2024-10-24 02:51:21,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3746 transitions. [2024-10-24 02:51:21,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 02:51:21,686 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:21,686 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:21,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:51:21,686 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:21,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:21,687 INFO L85 PathProgramCache]: Analyzing trace with hash 431995268, now seen corresponding path program 1 times [2024-10-24 02:51:21,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:21,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998827354] [2024-10-24 02:51:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:21,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:21,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998827354] [2024-10-24 02:51:21,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998827354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:21,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:21,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:21,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920970107] [2024-10-24 02:51:21,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:21,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:21,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:21,807 INFO L87 Difference]: Start difference. First operand 2392 states and 3746 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:21,845 INFO L93 Difference]: Finished difference Result 2565 states and 4025 transitions. [2024-10-24 02:51:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:21,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 02:51:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:21,855 INFO L225 Difference]: With dead ends: 2565 [2024-10-24 02:51:21,855 INFO L226 Difference]: Without dead ends: 2473 [2024-10-24 02:51:21,856 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 [2024-10-24 02:51:21,857 INFO L432 NwaCegarLoop]: 1554 mSDtfsCounter, 1488 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:21,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2024-10-24 02:51:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2471. [2024-10-24 02:51:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2469 states have (on average 1.568246253543945) internal successors, (3872), 2470 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3872 transitions. [2024-10-24 02:51:21,914 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3872 transitions. Word has length 64 [2024-10-24 02:51:21,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:21,914 INFO L471 AbstractCegarLoop]: Abstraction has 2471 states and 3872 transitions. [2024-10-24 02:51:21,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:21,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3872 transitions. [2024-10-24 02:51:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 02:51:21,918 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:21,918 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:21,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:51:21,919 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:21,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:21,919 INFO L85 PathProgramCache]: Analyzing trace with hash 434140220, now seen corresponding path program 1 times [2024-10-24 02:51:21,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:21,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497871700] [2024-10-24 02:51:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:21,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:22,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:22,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497871700] [2024-10-24 02:51:22,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497871700] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:22,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:22,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:22,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185929478] [2024-10-24 02:51:22,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:22,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:22,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:22,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:22,292 INFO L87 Difference]: Start difference. First operand 2471 states and 3872 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2024-10-24 02:51:22,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:22,511 INFO L93 Difference]: Finished difference Result 2644 states and 4148 transitions. [2024-10-24 02:51:22,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:22,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-24 02:51:22,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:22,524 INFO L225 Difference]: With dead ends: 2644 [2024-10-24 02:51:22,524 INFO L226 Difference]: Without dead ends: 2473 [2024-10-24 02:51:22,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2024-10-24 02:51:22,526 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 1530 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:22,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1983 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:22,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2024-10-24 02:51:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2471. [2024-10-24 02:51:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2469 states have (on average 1.5674362089914946) internal successors, (3870), 2470 states have internal predecessors, (3870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3870 transitions. [2024-10-24 02:51:22,570 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3870 transitions. Word has length 64 [2024-10-24 02:51:22,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:22,571 INFO L471 AbstractCegarLoop]: Abstraction has 2471 states and 3870 transitions. [2024-10-24 02:51:22,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2024-10-24 02:51:22,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3870 transitions. [2024-10-24 02:51:22,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-10-24 02:51:22,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:22,572 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:22,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 02:51:22,573 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:22,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:22,573 INFO L85 PathProgramCache]: Analyzing trace with hash 444744363, now seen corresponding path program 1 times [2024-10-24 02:51:22,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:22,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809976828] [2024-10-24 02:51:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:22,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:22,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:22,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809976828] [2024-10-24 02:51:22,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809976828] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:22,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:22,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 02:51:22,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293646555] [2024-10-24 02:51:22,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:22,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 02:51:22,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:22,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 02:51:22,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 02:51:22,745 INFO L87 Difference]: Start difference. First operand 2471 states and 3870 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:22,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:22,782 INFO L93 Difference]: Finished difference Result 2477 states and 3877 transitions. [2024-10-24 02:51:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 02:51:22,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-10-24 02:51:22,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:22,791 INFO L225 Difference]: With dead ends: 2477 [2024-10-24 02:51:22,792 INFO L226 Difference]: Without dead ends: 2475 [2024-10-24 02:51:22,792 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 [2024-10-24 02:51:22,795 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 0 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4657 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 [2024-10-24 02:51:22,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4657 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:22,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2024-10-24 02:51:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2475. [2024-10-24 02:51:22,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2475 states, 2473 states have (on average 1.566114031540639) internal successors, (3873), 2474 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2475 states to 2475 states and 3873 transitions. [2024-10-24 02:51:22,840 INFO L78 Accepts]: Start accepts. Automaton has 2475 states and 3873 transitions. Word has length 65 [2024-10-24 02:51:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:22,840 INFO L471 AbstractCegarLoop]: Abstraction has 2475 states and 3873 transitions. [2024-10-24 02:51:22,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2475 states and 3873 transitions. [2024-10-24 02:51:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:22,842 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:22,842 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:22,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 02:51:22,843 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:22,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:22,843 INFO L85 PathProgramCache]: Analyzing trace with hash 239452988, now seen corresponding path program 1 times [2024-10-24 02:51:22,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:22,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904662299] [2024-10-24 02:51:22,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:22,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:22,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:22,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904662299] [2024-10-24 02:51:22,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904662299] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:22,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:22,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:22,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280728558] [2024-10-24 02:51:22,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:22,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:22,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:22,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:22,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:22,919 INFO L87 Difference]: Start difference. First operand 2475 states and 3873 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:22,954 INFO L93 Difference]: Finished difference Result 2661 states and 4166 transitions. [2024-10-24 02:51:22,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:22,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:22,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:22,963 INFO L225 Difference]: With dead ends: 2661 [2024-10-24 02:51:22,963 INFO L226 Difference]: Without dead ends: 2565 [2024-10-24 02:51:22,964 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 [2024-10-24 02:51:22,965 INFO L432 NwaCegarLoop]: 1616 mSDtfsCounter, 1504 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1692 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 [2024-10-24 02:51:22,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1692 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2024-10-24 02:51:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2563. [2024-10-24 02:51:23,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2561 states have (on average 1.5657946114798906) internal successors, (4010), 2562 states have internal predecessors, (4010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 4010 transitions. [2024-10-24 02:51:23,009 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 4010 transitions. Word has length 66 [2024-10-24 02:51:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:23,009 INFO L471 AbstractCegarLoop]: Abstraction has 2563 states and 4010 transitions. [2024-10-24 02:51:23,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 4010 transitions. [2024-10-24 02:51:23,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:23,010 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:23,010 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:23,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 02:51:23,011 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:23,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:23,011 INFO L85 PathProgramCache]: Analyzing trace with hash -170933700, now seen corresponding path program 1 times [2024-10-24 02:51:23,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:23,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260772777] [2024-10-24 02:51:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:23,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260772777] [2024-10-24 02:51:23,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260772777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:23,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:23,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:23,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754846569] [2024-10-24 02:51:23,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:23,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:23,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:23,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:23,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:23,102 INFO L87 Difference]: Start difference. First operand 2563 states and 4010 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:23,140 INFO L93 Difference]: Finished difference Result 3061 states and 4790 transitions. [2024-10-24 02:51:23,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:23,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:23,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:23,149 INFO L225 Difference]: With dead ends: 3061 [2024-10-24 02:51:23,149 INFO L226 Difference]: Without dead ends: 2800 [2024-10-24 02:51:23,150 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 [2024-10-24 02:51:23,151 INFO L432 NwaCegarLoop]: 1618 mSDtfsCounter, 1502 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1698 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 [2024-10-24 02:51:23,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2024-10-24 02:51:23,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2798. [2024-10-24 02:51:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2796 states have (on average 1.563662374821173) internal successors, (4372), 2797 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4372 transitions. [2024-10-24 02:51:23,201 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4372 transitions. Word has length 66 [2024-10-24 02:51:23,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:23,202 INFO L471 AbstractCegarLoop]: Abstraction has 2798 states and 4372 transitions. [2024-10-24 02:51:23,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4372 transitions. [2024-10-24 02:51:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:23,203 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:23,203 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:23,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 02:51:23,203 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:23,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash -399572932, now seen corresponding path program 1 times [2024-10-24 02:51:23,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:23,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100767747] [2024-10-24 02:51:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:23,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:23,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:23,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100767747] [2024-10-24 02:51:23,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100767747] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:23,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:23,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:23,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401679062] [2024-10-24 02:51:23,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:23,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:23,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:23,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:23,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:23,256 INFO L87 Difference]: Start difference. First operand 2798 states and 4372 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:23,292 INFO L93 Difference]: Finished difference Result 3742 states and 5834 transitions. [2024-10-24 02:51:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:23,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:23,302 INFO L225 Difference]: With dead ends: 3742 [2024-10-24 02:51:23,302 INFO L226 Difference]: Without dead ends: 3246 [2024-10-24 02:51:23,304 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 [2024-10-24 02:51:23,304 INFO L432 NwaCegarLoop]: 1606 mSDtfsCounter, 1498 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1694 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 [2024-10-24 02:51:23,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1694 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2024-10-24 02:51:23,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 3244. [2024-10-24 02:51:23,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3244 states, 3242 states have (on average 1.5570635410240592) internal successors, (5048), 3243 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 5048 transitions. [2024-10-24 02:51:23,363 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 5048 transitions. Word has length 66 [2024-10-24 02:51:23,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:23,363 INFO L471 AbstractCegarLoop]: Abstraction has 3244 states and 5048 transitions. [2024-10-24 02:51:23,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 5048 transitions. [2024-10-24 02:51:23,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:23,364 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:23,364 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:23,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 02:51:23,364 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:23,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1025228996, now seen corresponding path program 1 times [2024-10-24 02:51:23,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:23,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048702697] [2024-10-24 02:51:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:23,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:23,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:23,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048702697] [2024-10-24 02:51:23,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048702697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:23,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:23,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:23,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581737595] [2024-10-24 02:51:23,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:23,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:23,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:23,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:23,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:23,415 INFO L87 Difference]: Start difference. First operand 3244 states and 5048 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:23,464 INFO L93 Difference]: Finished difference Result 5032 states and 7778 transitions. [2024-10-24 02:51:23,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:23,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:23,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:23,482 INFO L225 Difference]: With dead ends: 5032 [2024-10-24 02:51:23,482 INFO L226 Difference]: Without dead ends: 4090 [2024-10-24 02:51:23,485 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 [2024-10-24 02:51:23,486 INFO L432 NwaCegarLoop]: 1604 mSDtfsCounter, 1496 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1696 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 [2024-10-24 02:51:23,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1696 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:23,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2024-10-24 02:51:23,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 4088. [2024-10-24 02:51:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 4086 states have (on average 1.54282917278512) internal successors, (6304), 4087 states have internal predecessors, (6304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 6304 transitions. [2024-10-24 02:51:23,574 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 6304 transitions. Word has length 66 [2024-10-24 02:51:23,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:23,574 INFO L471 AbstractCegarLoop]: Abstraction has 4088 states and 6304 transitions. [2024-10-24 02:51:23,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,574 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 6304 transitions. [2024-10-24 02:51:23,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:23,575 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:23,575 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:23,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 02:51:23,575 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:23,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:23,576 INFO L85 PathProgramCache]: Analyzing trace with hash -136495556, now seen corresponding path program 1 times [2024-10-24 02:51:23,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:23,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619656542] [2024-10-24 02:51:23,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:23,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:23,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:23,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619656542] [2024-10-24 02:51:23,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619656542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:23,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:23,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:23,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25770159] [2024-10-24 02:51:23,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:23,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:23,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:23,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:23,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:23,638 INFO L87 Difference]: Start difference. First operand 4088 states and 6304 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:23,721 INFO L93 Difference]: Finished difference Result 7468 states and 11378 transitions. [2024-10-24 02:51:23,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:23,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:23,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:23,743 INFO L225 Difference]: With dead ends: 7468 [2024-10-24 02:51:23,743 INFO L226 Difference]: Without dead ends: 5682 [2024-10-24 02:51:23,747 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 [2024-10-24 02:51:23,747 INFO L432 NwaCegarLoop]: 1602 mSDtfsCounter, 1494 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1698 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 [2024-10-24 02:51:23,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1698 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:23,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5682 states. [2024-10-24 02:51:23,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5682 to 5680. [2024-10-24 02:51:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 5678 states have (on average 1.5188446636139485) internal successors, (8624), 5679 states have internal predecessors, (8624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 8624 transitions. [2024-10-24 02:51:23,869 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 8624 transitions. Word has length 66 [2024-10-24 02:51:23,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:23,869 INFO L471 AbstractCegarLoop]: Abstraction has 5680 states and 8624 transitions. [2024-10-24 02:51:23,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:23,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 8624 transitions. [2024-10-24 02:51:23,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 02:51:23,871 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:23,871 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:23,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 02:51:23,871 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:23,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:23,872 INFO L85 PathProgramCache]: Analyzing trace with hash -439516868, now seen corresponding path program 1 times [2024-10-24 02:51:23,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:23,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775545105] [2024-10-24 02:51:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:23,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:23,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:23,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:23,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775545105] [2024-10-24 02:51:23,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775545105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:23,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:23,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:23,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711887339] [2024-10-24 02:51:23,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:23,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:23,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:23,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:23,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:23,924 INFO L87 Difference]: Start difference. First operand 5680 states and 8624 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:24,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:24,035 INFO L93 Difference]: Finished difference Result 12052 states and 18002 transitions. [2024-10-24 02:51:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-10-24 02:51:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:24,053 INFO L225 Difference]: With dead ends: 12052 [2024-10-24 02:51:24,053 INFO L226 Difference]: Without dead ends: 8674 [2024-10-24 02:51:24,060 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 [2024-10-24 02:51:24,061 INFO L432 NwaCegarLoop]: 1616 mSDtfsCounter, 1500 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1700 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 [2024-10-24 02:51:24,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:24,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8674 states. [2024-10-24 02:51:24,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8674 to 8672. [2024-10-24 02:51:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8672 states, 8670 states have (on average 1.4855824682814303) internal successors, (12880), 8671 states have internal predecessors, (12880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:24,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 12880 transitions. [2024-10-24 02:51:24,348 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 12880 transitions. Word has length 66 [2024-10-24 02:51:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:24,348 INFO L471 AbstractCegarLoop]: Abstraction has 8672 states and 12880 transitions. [2024-10-24 02:51:24,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 12880 transitions. [2024-10-24 02:51:24,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:24,351 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:24,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:24,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 02:51:24,352 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:24,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:24,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1981614661, now seen corresponding path program 1 times [2024-10-24 02:51:24,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:24,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364134095] [2024-10-24 02:51:24,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:24,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:51:24,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:24,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364134095] [2024-10-24 02:51:24,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364134095] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:24,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:24,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:24,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559798218] [2024-10-24 02:51:24,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:24,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:24,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:24,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:24,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:24,533 INFO L87 Difference]: Start difference. First operand 8672 states and 12880 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:25,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:25,325 INFO L93 Difference]: Finished difference Result 46318 states and 67703 transitions. [2024-10-24 02:51:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:25,326 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 [2024-10-24 02:51:25,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:25,401 INFO L225 Difference]: With dead ends: 46318 [2024-10-24 02:51:25,401 INFO L226 Difference]: Without dead ends: 41836 [2024-10-24 02:51:25,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:51:25,420 INFO L432 NwaCegarLoop]: 1628 mSDtfsCounter, 8059 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8059 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:25,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8059 Valid, 3989 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:25,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41836 states. [2024-10-24 02:51:26,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41836 to 14112. [2024-10-24 02:51:26,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14112 states, 14110 states have (on average 1.4684620836286322) internal successors, (20720), 14111 states have internal predecessors, (20720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14112 states to 14112 states and 20720 transitions. [2024-10-24 02:51:26,052 INFO L78 Accepts]: Start accepts. Automaton has 14112 states and 20720 transitions. Word has length 86 [2024-10-24 02:51:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:26,052 INFO L471 AbstractCegarLoop]: Abstraction has 14112 states and 20720 transitions. [2024-10-24 02:51:26,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:26,053 INFO L276 IsEmpty]: Start isEmpty. Operand 14112 states and 20720 transitions. [2024-10-24 02:51:26,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:26,057 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:26,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:26,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 02:51:26,057 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:26,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:26,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1902965947, now seen corresponding path program 1 times [2024-10-24 02:51:26,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:26,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931052652] [2024-10-24 02:51:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:26,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 02:51:26,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:26,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931052652] [2024-10-24 02:51:26,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931052652] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:26,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:26,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:26,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849561909] [2024-10-24 02:51:26,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:26,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:26,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:26,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:26,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:26,286 INFO L87 Difference]: Start difference. First operand 14112 states and 20720 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:27,245 INFO L93 Difference]: Finished difference Result 52686 states and 76919 transitions. [2024-10-24 02:51:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:27,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 [2024-10-24 02:51:27,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:27,322 INFO L225 Difference]: With dead ends: 52686 [2024-10-24 02:51:27,322 INFO L226 Difference]: Without dead ends: 46316 [2024-10-24 02:51:27,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:51:27,343 INFO L432 NwaCegarLoop]: 1627 mSDtfsCounter, 8063 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8063 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:27,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8063 Valid, 3935 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:27,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46316 states. [2024-10-24 02:51:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46316 to 22720. [2024-10-24 02:51:28,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22720 states, 22718 states have (on average 1.4571705255744343) internal successors, (33104), 22719 states have internal predecessors, (33104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:28,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22720 states to 22720 states and 33104 transitions. [2024-10-24 02:51:28,058 INFO L78 Accepts]: Start accepts. Automaton has 22720 states and 33104 transitions. Word has length 86 [2024-10-24 02:51:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:28,058 INFO L471 AbstractCegarLoop]: Abstraction has 22720 states and 33104 transitions. [2024-10-24 02:51:28,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:28,059 INFO L276 IsEmpty]: Start isEmpty. Operand 22720 states and 33104 transitions. [2024-10-24 02:51:28,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:28,062 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:28,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:28,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 02:51:28,063 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:28,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:28,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1674326715, now seen corresponding path program 1 times [2024-10-24 02:51:28,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:28,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985520405] [2024-10-24 02:51:28,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:28,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 02:51:28,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:28,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985520405] [2024-10-24 02:51:28,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985520405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:28,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:28,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:28,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958992617] [2024-10-24 02:51:28,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:28,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:28,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:28,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:28,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:28,268 INFO L87 Difference]: Start difference. First operand 22720 states and 33104 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:29,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:29,243 INFO L93 Difference]: Finished difference Result 59054 states and 86103 transitions. [2024-10-24 02:51:29,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:29,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2024-10-24 02:51:29,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:29,356 INFO L225 Difference]: With dead ends: 59054 [2024-10-24 02:51:29,357 INFO L226 Difference]: Without dead ends: 52684 [2024-10-24 02:51:29,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:51:29,386 INFO L432 NwaCegarLoop]: 1625 mSDtfsCounter, 8103 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8103 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:29,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8103 Valid, 3954 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:29,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52684 states. [2024-10-24 02:51:30,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52684 to 29088. [2024-10-24 02:51:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29088 states, 29086 states have (on average 1.4538953448394416) internal successors, (42288), 29087 states have internal predecessors, (42288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29088 states to 29088 states and 42288 transitions. [2024-10-24 02:51:30,542 INFO L78 Accepts]: Start accepts. Automaton has 29088 states and 42288 transitions. Word has length 86 [2024-10-24 02:51:30,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:30,542 INFO L471 AbstractCegarLoop]: Abstraction has 29088 states and 42288 transitions. [2024-10-24 02:51:30,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 29088 states and 42288 transitions. [2024-10-24 02:51:30,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:30,547 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:30,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:30,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 02:51:30,548 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:30,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:30,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1048670651, now seen corresponding path program 1 times [2024-10-24 02:51:30,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:30,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142862210] [2024-10-24 02:51:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:30,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-24 02:51:30,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:30,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142862210] [2024-10-24 02:51:30,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142862210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:30,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:30,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:30,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409859185] [2024-10-24 02:51:30,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:30,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:30,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:30,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:30,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:30,785 INFO L87 Difference]: Start difference. First operand 29088 states and 42288 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:31,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:31,872 INFO L93 Difference]: Finished difference Result 65422 states and 95287 transitions. [2024-10-24 02:51:31,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:31,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 [2024-10-24 02:51:31,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:31,964 INFO L225 Difference]: With dead ends: 65422 [2024-10-24 02:51:31,964 INFO L226 Difference]: Without dead ends: 59052 [2024-10-24 02:51:31,995 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:51:31,996 INFO L432 NwaCegarLoop]: 1623 mSDtfsCounter, 8157 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8157 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:31,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8157 Valid, 3919 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:32,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59052 states. [2024-10-24 02:51:32,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59052 to 35456. [2024-10-24 02:51:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35456 states, 35454 states have (on average 1.4517966943081175) internal successors, (51472), 35455 states have internal predecessors, (51472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:33,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35456 states to 35456 states and 51472 transitions. [2024-10-24 02:51:33,046 INFO L78 Accepts]: Start accepts. Automaton has 35456 states and 51472 transitions. Word has length 86 [2024-10-24 02:51:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:33,046 INFO L471 AbstractCegarLoop]: Abstraction has 35456 states and 51472 transitions. [2024-10-24 02:51:33,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 35456 states and 51472 transitions. [2024-10-24 02:51:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:33,050 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:33,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:33,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 02:51:33,051 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:33,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1937404091, now seen corresponding path program 1 times [2024-10-24 02:51:33,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:33,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935932837] [2024-10-24 02:51:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:33,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 02:51:33,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:33,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935932837] [2024-10-24 02:51:33,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935932837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:33,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:33,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:33,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73590775] [2024-10-24 02:51:33,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:33,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:33,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:33,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:33,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:33,320 INFO L87 Difference]: Start difference. First operand 35456 states and 51472 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-10-24 02:51:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:34,629 INFO L93 Difference]: Finished difference Result 71790 states and 104471 transitions. [2024-10-24 02:51:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:34,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 86 [2024-10-24 02:51:34,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:34,714 INFO L225 Difference]: With dead ends: 71790 [2024-10-24 02:51:34,714 INFO L226 Difference]: Without dead ends: 65420 [2024-10-24 02:51:34,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:51:34,731 INFO L432 NwaCegarLoop]: 1623 mSDtfsCounter, 8071 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8071 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:34,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8071 Valid, 3991 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:34,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65420 states. [2024-10-24 02:51:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65420 to 41824. [2024-10-24 02:51:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41824 states, 41822 states have (on average 1.4503371431304097) internal successors, (60656), 41823 states have internal predecessors, (60656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41824 states to 41824 states and 60656 transitions. [2024-10-24 02:51:36,519 INFO L78 Accepts]: Start accepts. Automaton has 41824 states and 60656 transitions. Word has length 86 [2024-10-24 02:51:36,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:36,519 INFO L471 AbstractCegarLoop]: Abstraction has 41824 states and 60656 transitions. [2024-10-24 02:51:36,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-10-24 02:51:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 41824 states and 60656 transitions. [2024-10-24 02:51:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-24 02:51:36,523 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:36,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:36,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 02:51:36,524 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:36,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:36,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1634382779, now seen corresponding path program 1 times [2024-10-24 02:51:36,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:36,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977504220] [2024-10-24 02:51:36,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:36,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 02:51:36,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:36,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977504220] [2024-10-24 02:51:36,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977504220] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:36,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:36,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 02:51:36,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761718173] [2024-10-24 02:51:36,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:36,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:36,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:36,699 INFO L87 Difference]: Start difference. First operand 41824 states and 60656 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:38,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:38,332 INFO L93 Difference]: Finished difference Result 78158 states and 113655 transitions. [2024-10-24 02:51:38,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 02:51:38,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 [2024-10-24 02:51:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:38,414 INFO L225 Difference]: With dead ends: 78158 [2024-10-24 02:51:38,414 INFO L226 Difference]: Without dead ends: 71788 [2024-10-24 02:51:38,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-10-24 02:51:38,433 INFO L432 NwaCegarLoop]: 1622 mSDtfsCounter, 8010 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8010 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:38,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8010 Valid, 4111 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71788 states. [2024-10-24 02:51:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71788 to 48192. [2024-10-24 02:51:39,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48192 states, 48190 states have (on average 1.4492633326416269) internal successors, (69840), 48191 states have internal predecessors, (69840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:40,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48192 states to 48192 states and 69840 transitions. [2024-10-24 02:51:40,011 INFO L78 Accepts]: Start accepts. Automaton has 48192 states and 69840 transitions. Word has length 86 [2024-10-24 02:51:40,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:40,011 INFO L471 AbstractCegarLoop]: Abstraction has 48192 states and 69840 transitions. [2024-10-24 02:51:40,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:40,012 INFO L276 IsEmpty]: Start isEmpty. Operand 48192 states and 69840 transitions. [2024-10-24 02:51:40,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-10-24 02:51:40,016 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:40,017 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:40,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-24 02:51:40,017 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:40,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:40,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1298476795, now seen corresponding path program 1 times [2024-10-24 02:51:40,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:40,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069236353] [2024-10-24 02:51:40,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:40,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:40,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:40,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069236353] [2024-10-24 02:51:40,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069236353] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:40,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:40,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:40,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333100540] [2024-10-24 02:51:40,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:40,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:40,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:40,152 INFO L87 Difference]: Start difference. First operand 48192 states and 69840 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:41,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:41,455 INFO L93 Difference]: Finished difference Result 94084 states and 136082 transitions. [2024-10-24 02:51:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:41,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 [2024-10-24 02:51:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:41,512 INFO L225 Difference]: With dead ends: 94084 [2024-10-24 02:51:41,512 INFO L226 Difference]: Without dead ends: 48194 [2024-10-24 02:51:41,544 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 [2024-10-24 02:51:41,545 INFO L432 NwaCegarLoop]: 1598 mSDtfsCounter, 53 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3143 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 [2024-10-24 02:51:41,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:41,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48194 states. [2024-10-24 02:51:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48194 to 48192. [2024-10-24 02:51:42,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48192 states, 48190 states have (on average 1.4349865117244243) internal successors, (69152), 48191 states have internal predecessors, (69152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48192 states to 48192 states and 69152 transitions. [2024-10-24 02:51:43,068 INFO L78 Accepts]: Start accepts. Automaton has 48192 states and 69152 transitions. Word has length 87 [2024-10-24 02:51:43,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:43,069 INFO L471 AbstractCegarLoop]: Abstraction has 48192 states and 69152 transitions. [2024-10-24 02:51:43,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:43,069 INFO L276 IsEmpty]: Start isEmpty. Operand 48192 states and 69152 transitions. [2024-10-24 02:51:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-10-24 02:51:43,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:43,074 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:43,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-24 02:51:43,074 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:43,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:43,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1037402045, now seen corresponding path program 1 times [2024-10-24 02:51:43,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:43,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332618455] [2024-10-24 02:51:43,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:43,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:43,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:43,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332618455] [2024-10-24 02:51:43,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332618455] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:43,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:43,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:43,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17928542] [2024-10-24 02:51:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:43,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:43,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:43,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:43,201 INFO L87 Difference]: Start difference. First operand 48192 states and 69152 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:44,012 INFO L93 Difference]: Finished difference Result 65016 states and 93415 transitions. [2024-10-24 02:51:44,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:44,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2024-10-24 02:51:44,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:44,038 INFO L225 Difference]: With dead ends: 65016 [2024-10-24 02:51:44,038 INFO L226 Difference]: Without dead ends: 19126 [2024-10-24 02:51:44,059 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 [2024-10-24 02:51:44,060 INFO L432 NwaCegarLoop]: 1596 mSDtfsCounter, 47 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3140 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 [2024-10-24 02:51:44,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:44,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19126 states. [2024-10-24 02:51:44,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19126 to 19119. [2024-10-24 02:51:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19119 states, 19117 states have (on average 1.4445258147198827) internal successors, (27615), 19118 states have internal predecessors, (27615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19119 states to 19119 states and 27615 transitions. [2024-10-24 02:51:44,608 INFO L78 Accepts]: Start accepts. Automaton has 19119 states and 27615 transitions. Word has length 88 [2024-10-24 02:51:44,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:44,609 INFO L471 AbstractCegarLoop]: Abstraction has 19119 states and 27615 transitions. [2024-10-24 02:51:44,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,609 INFO L276 IsEmpty]: Start isEmpty. Operand 19119 states and 27615 transitions. [2024-10-24 02:51:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 02:51:44,610 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:44,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:44,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-24 02:51:44,611 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:44,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1781311287, now seen corresponding path program 1 times [2024-10-24 02:51:44,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:44,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884288886] [2024-10-24 02:51:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:44,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:44,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:44,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884288886] [2024-10-24 02:51:44,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884288886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:44,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:44,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:44,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329839074] [2024-10-24 02:51:44,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:44,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:44,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:44,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:44,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:44,720 INFO L87 Difference]: Start difference. First operand 19119 states and 27615 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:44,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:44,982 INFO L93 Difference]: Finished difference Result 27523 states and 39617 transitions. [2024-10-24 02:51:44,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:44,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2024-10-24 02:51:44,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:45,000 INFO L225 Difference]: With dead ends: 27523 [2024-10-24 02:51:45,001 INFO L226 Difference]: Without dead ends: 10721 [2024-10-24 02:51:45,015 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 [2024-10-24 02:51:45,016 INFO L432 NwaCegarLoop]: 1590 mSDtfsCounter, 49 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3119 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 [2024-10-24 02:51:45,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3119 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:45,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10721 states. [2024-10-24 02:51:45,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10721 to 10719. [2024-10-24 02:51:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10717 states have (on average 1.4458337221237287) internal successors, (15495), 10718 states have internal predecessors, (15495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:45,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 15495 transitions. [2024-10-24 02:51:45,412 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 15495 transitions. Word has length 89 [2024-10-24 02:51:45,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:45,413 INFO L471 AbstractCegarLoop]: Abstraction has 10719 states and 15495 transitions. [2024-10-24 02:51:45,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:45,413 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 15495 transitions. [2024-10-24 02:51:45,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 02:51:45,414 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:45,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:45,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-24 02:51:45,414 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:45,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:45,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2081860631, now seen corresponding path program 1 times [2024-10-24 02:51:45,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:45,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019491468] [2024-10-24 02:51:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:45,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:45,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:45,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019491468] [2024-10-24 02:51:45,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019491468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:45,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:45,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:45,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886209866] [2024-10-24 02:51:45,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:45,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:45,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:45,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:45,520 INFO L87 Difference]: Start difference. First operand 10719 states and 15495 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:45,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:45,654 INFO L93 Difference]: Finished difference Result 14923 states and 21437 transitions. [2024-10-24 02:51:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:45,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2024-10-24 02:51:45,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:45,662 INFO L225 Difference]: With dead ends: 14923 [2024-10-24 02:51:45,662 INFO L226 Difference]: Without dead ends: 6521 [2024-10-24 02:51:45,667 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 [2024-10-24 02:51:45,668 INFO L432 NwaCegarLoop]: 1583 mSDtfsCounter, 46 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3104 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 [2024-10-24 02:51:45,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3104 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:45,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2024-10-24 02:51:45,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 6519. [2024-10-24 02:51:45,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6519 states, 6517 states have (on average 1.4569587233389596) internal successors, (9495), 6518 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6519 states to 6519 states and 9495 transitions. [2024-10-24 02:51:45,901 INFO L78 Accepts]: Start accepts. Automaton has 6519 states and 9495 transitions. Word has length 91 [2024-10-24 02:51:45,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:45,901 INFO L471 AbstractCegarLoop]: Abstraction has 6519 states and 9495 transitions. [2024-10-24 02:51:45,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:45,901 INFO L276 IsEmpty]: Start isEmpty. Operand 6519 states and 9495 transitions. [2024-10-24 02:51:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-24 02:51:45,903 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:45,903 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:45,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 02:51:45,903 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:45,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:45,903 INFO L85 PathProgramCache]: Analyzing trace with hash 207620325, now seen corresponding path program 1 times [2024-10-24 02:51:45,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:45,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026861351] [2024-10-24 02:51:45,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:45,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:46,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:46,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026861351] [2024-10-24 02:51:46,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026861351] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:46,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:46,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:46,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145400388] [2024-10-24 02:51:46,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:46,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:46,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:46,028 INFO L87 Difference]: Start difference. First operand 6519 states and 9495 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:46,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:46,147 INFO L93 Difference]: Finished difference Result 8623 states and 12437 transitions. [2024-10-24 02:51:46,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:46,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2024-10-24 02:51:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:46,156 INFO L225 Difference]: With dead ends: 8623 [2024-10-24 02:51:46,156 INFO L226 Difference]: Without dead ends: 4421 [2024-10-24 02:51:46,160 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 [2024-10-24 02:51:46,161 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 43 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3089 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 [2024-10-24 02:51:46,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3089 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2024-10-24 02:51:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4419. [2024-10-24 02:51:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4419 states, 4417 states have (on average 1.477247000226398) internal successors, (6525), 4418 states have internal predecessors, (6525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4419 states to 4419 states and 6525 transitions. [2024-10-24 02:51:46,296 INFO L78 Accepts]: Start accepts. Automaton has 4419 states and 6525 transitions. Word has length 93 [2024-10-24 02:51:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:46,296 INFO L471 AbstractCegarLoop]: Abstraction has 4419 states and 6525 transitions. [2024-10-24 02:51:46,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4419 states and 6525 transitions. [2024-10-24 02:51:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-10-24 02:51:46,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:46,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:46,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-24 02:51:46,299 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:46,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:46,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1099411661, now seen corresponding path program 1 times [2024-10-24 02:51:46,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:46,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333886210] [2024-10-24 02:51:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:46,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:46,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:46,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333886210] [2024-10-24 02:51:46,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333886210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:51:46,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:51:46,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 02:51:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768917998] [2024-10-24 02:51:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:51:46,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:51:46,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:46,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:51:46,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 02:51:46,429 INFO L87 Difference]: Start difference. First operand 4419 states and 6525 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:46,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:46,511 INFO L93 Difference]: Finished difference Result 5473 states and 7982 transitions. [2024-10-24 02:51:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:51:46,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2024-10-24 02:51:46,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:46,520 INFO L225 Difference]: With dead ends: 5473 [2024-10-24 02:51:46,520 INFO L226 Difference]: Without dead ends: 3371 [2024-10-24 02:51:46,523 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 [2024-10-24 02:51:46,524 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 40 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3074 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 [2024-10-24 02:51:46,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3074 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:51:46,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2024-10-24 02:51:46,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3369. [2024-10-24 02:51:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 3367 states have (on average 1.5013365013365014) internal successors, (5055), 3368 states have internal predecessors, (5055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:46,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 5055 transitions. [2024-10-24 02:51:46,620 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 5055 transitions. Word has length 95 [2024-10-24 02:51:46,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:46,620 INFO L471 AbstractCegarLoop]: Abstraction has 3369 states and 5055 transitions. [2024-10-24 02:51:46,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 5055 transitions. [2024-10-24 02:51:46,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 02:51:46,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:46,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:46,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-10-24 02:51:46,622 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:46,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:46,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1010802943, now seen corresponding path program 1 times [2024-10-24 02:51:46,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:46,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989800283] [2024-10-24 02:51:46,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:46,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:51:46,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:46,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989800283] [2024-10-24 02:51:46,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989800283] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:51:46,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306202886] [2024-10-24 02:51:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:46,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:51:46,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:51:46,859 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) [2024-10-24 02:51:46,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 02:51:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:47,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 02:51:47,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:51:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:51:47,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:51:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 02:51:47,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306202886] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:51:47,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:51:47,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-10-24 02:51:47,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619438528] [2024-10-24 02:51:47,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:51:47,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 02:51:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 02:51:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-10-24 02:51:47,560 INFO L87 Difference]: Start difference. First operand 3369 states and 5055 transitions. Second operand has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:47,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:47,742 INFO L93 Difference]: Finished difference Result 5905 states and 8454 transitions. [2024-10-24 02:51:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 02:51:47,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 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 97 [2024-10-24 02:51:47,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:47,752 INFO L225 Difference]: With dead ends: 5905 [2024-10-24 02:51:47,752 INFO L226 Difference]: Without dead ends: 4853 [2024-10-24 02:51:47,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=38, Unknown=0, NotChecked=0, Total=72 [2024-10-24 02:51:47,756 INFO L432 NwaCegarLoop]: 1553 mSDtfsCounter, 5897 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5897 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:47,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5897 Valid, 3373 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 02:51:47,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2024-10-24 02:51:47,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4776. [2024-10-24 02:51:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4776 states, 4774 states have (on average 1.434017595307918) internal successors, (6846), 4775 states have internal predecessors, (6846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 6846 transitions. [2024-10-24 02:51:47,870 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 6846 transitions. Word has length 97 [2024-10-24 02:51:47,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:47,871 INFO L471 AbstractCegarLoop]: Abstraction has 4776 states and 6846 transitions. [2024-10-24 02:51:47,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.125) internal successors, (249), 8 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:47,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 6846 transitions. [2024-10-24 02:51:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-24 02:51:47,872 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:47,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:47,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 02:51:48,073 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,SelfDestructingSolverStorable25 [2024-10-24 02:51:48,074 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:48,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:48,074 INFO L85 PathProgramCache]: Analyzing trace with hash 806498379, now seen corresponding path program 1 times [2024-10-24 02:51:48,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:48,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159307082] [2024-10-24 02:51:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:48,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:49,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:49,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159307082] [2024-10-24 02:51:49,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159307082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:51:49,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000215170] [2024-10-24 02:51:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:49,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:51:49,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:51:49,313 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) [2024-10-24 02:51:49,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 02:51:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:49,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:51:49,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:51:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:50,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:51:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:50,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000215170] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:51:50,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:51:50,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-10-24 02:51:50,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463244056] [2024-10-24 02:51:50,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:51:50,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 02:51:50,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:50,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 02:51:50,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-10-24 02:51:50,953 INFO L87 Difference]: Start difference. First operand 4776 states and 6846 transitions. Second operand has 26 states, 26 states have (on average 9.5) internal successors, (247), 25 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:51,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:51,620 INFO L93 Difference]: Finished difference Result 9540 states and 13120 transitions. [2024-10-24 02:51:51,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:51:51,621 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.5) internal successors, (247), 25 states have internal predecessors, (247), 0 states have call successors, (0), 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 98 [2024-10-24 02:51:51,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:51,629 INFO L225 Difference]: With dead ends: 9540 [2024-10-24 02:51:51,629 INFO L226 Difference]: Without dead ends: 7264 [2024-10-24 02:51:51,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-10-24 02:51:51,632 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 13910 mSDsluCounter, 3389 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13910 SdHoareTripleChecker+Valid, 4910 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:51,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13910 Valid, 4910 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 02:51:51,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7264 states. [2024-10-24 02:51:51,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7264 to 7202. [2024-10-24 02:51:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7202 states, 7200 states have (on average 1.3825) internal successors, (9954), 7201 states have internal predecessors, (9954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7202 states to 7202 states and 9954 transitions. [2024-10-24 02:51:51,773 INFO L78 Accepts]: Start accepts. Automaton has 7202 states and 9954 transitions. Word has length 98 [2024-10-24 02:51:51,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:51,773 INFO L471 AbstractCegarLoop]: Abstraction has 7202 states and 9954 transitions. [2024-10-24 02:51:51,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.5) internal successors, (247), 25 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:51,774 INFO L276 IsEmpty]: Start isEmpty. Operand 7202 states and 9954 transitions. [2024-10-24 02:51:51,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-24 02:51:51,775 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:51,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:51,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 02:51:51,975 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,SelfDestructingSolverStorable26 [2024-10-24 02:51:51,976 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:51,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:51,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1604294219, now seen corresponding path program 1 times [2024-10-24 02:51:51,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:51,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989911187] [2024-10-24 02:51:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:51,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:53,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:53,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989911187] [2024-10-24 02:51:53,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989911187] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:51:53,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081802321] [2024-10-24 02:51:53,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:53,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:51:53,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:51:53,099 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) [2024-10-24 02:51:53,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 02:51:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:53,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:51:53,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:51:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:53,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:51:54,471 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:54,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081802321] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:51:54,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:51:54,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-10-24 02:51:54,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204834240] [2024-10-24 02:51:54,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:51:54,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 02:51:54,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:51:54,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 02:51:54,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-10-24 02:51:54,475 INFO L87 Difference]: Start difference. First operand 7202 states and 9954 transitions. Second operand has 28 states, 28 states have (on average 9.178571428571429) internal successors, (257), 27 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:57,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:51:57,587 INFO L93 Difference]: Finished difference Result 29938 states and 39737 transitions. [2024-10-24 02:51:57,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-24 02:51:57,588 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.178571428571429) internal successors, (257), 27 states have internal predecessors, (257), 0 states have call successors, (0), 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 98 [2024-10-24 02:51:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:51:57,627 INFO L225 Difference]: With dead ends: 29938 [2024-10-24 02:51:57,627 INFO L226 Difference]: Without dead ends: 25115 [2024-10-24 02:51:57,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1055, Invalid=4201, Unknown=0, NotChecked=0, Total=5256 [2024-10-24 02:51:57,639 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 27004 mSDsluCounter, 5265 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27004 SdHoareTripleChecker+Valid, 6795 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:51:57,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27004 Valid, 6795 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:51:57,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25115 states. [2024-10-24 02:51:58,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25115 to 24599. [2024-10-24 02:51:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24599 states, 24597 states have (on average 1.3102004309468633) internal successors, (32227), 24598 states have internal predecessors, (32227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:58,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24599 states to 24599 states and 32227 transitions. [2024-10-24 02:51:58,401 INFO L78 Accepts]: Start accepts. Automaton has 24599 states and 32227 transitions. Word has length 98 [2024-10-24 02:51:58,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:51:58,402 INFO L471 AbstractCegarLoop]: Abstraction has 24599 states and 32227 transitions. [2024-10-24 02:51:58,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.178571428571429) internal successors, (257), 27 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:51:58,402 INFO L276 IsEmpty]: Start isEmpty. Operand 24599 states and 32227 transitions. [2024-10-24 02:51:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 02:51:58,404 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:51:58,404 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:51:58,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 02:51:58,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:51:58,605 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:51:58,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:51:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash -645036193, now seen corresponding path program 1 times [2024-10-24 02:51:58,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:51:58,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848476432] [2024-10-24 02:51:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:58,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:51:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:59,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:51:59,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848476432] [2024-10-24 02:51:59,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848476432] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:51:59,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939809066] [2024-10-24 02:51:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:51:59,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:51:59,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:51:59,008 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) [2024-10-24 02:51:59,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 02:51:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:51:59,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 02:51:59,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:51:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:51:59,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:52:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:01,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939809066] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:52:01,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:52:01,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2024-10-24 02:52:01,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915141286] [2024-10-24 02:52:01,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:52:01,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-24 02:52:01,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:01,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-24 02:52:01,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-10-24 02:52:01,356 INFO L87 Difference]: Start difference. First operand 24599 states and 32227 transitions. Second operand has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:04,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:04,119 INFO L93 Difference]: Finished difference Result 58900 states and 76500 transitions. [2024-10-24 02:52:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-24 02:52:04,119 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 0 states have call successors, (0), 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 99 [2024-10-24 02:52:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:04,162 INFO L225 Difference]: With dead ends: 58900 [2024-10-24 02:52:04,162 INFO L226 Difference]: Without dead ends: 38574 [2024-10-24 02:52:04,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=712, Invalid=2828, Unknown=0, NotChecked=0, Total=3540 [2024-10-24 02:52:04,179 INFO L432 NwaCegarLoop]: 1502 mSDtfsCounter, 15148 mSDsluCounter, 15335 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15148 SdHoareTripleChecker+Valid, 16837 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:52:04,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15148 Valid, 16837 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:52:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38574 states. [2024-10-24 02:52:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38574 to 38562. [2024-10-24 02:52:05,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38562 states, 38560 states have (on average 1.2890560165975105) internal successors, (49706), 38561 states have internal predecessors, (49706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38562 states to 38562 states and 49706 transitions. [2024-10-24 02:52:05,547 INFO L78 Accepts]: Start accepts. Automaton has 38562 states and 49706 transitions. Word has length 99 [2024-10-24 02:52:05,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:05,548 INFO L471 AbstractCegarLoop]: Abstraction has 38562 states and 49706 transitions. [2024-10-24 02:52:05,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 38562 states and 49706 transitions. [2024-10-24 02:52:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 02:52:05,551 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:05,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:05,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 02:52:05,751 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,SelfDestructingSolverStorable28 [2024-10-24 02:52:05,752 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:05,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:05,752 INFO L85 PathProgramCache]: Analyzing trace with hash -932362033, now seen corresponding path program 1 times [2024-10-24 02:52:05,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:05,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923371825] [2024-10-24 02:52:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:05,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:06,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:06,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923371825] [2024-10-24 02:52:06,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923371825] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:52:06,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411671599] [2024-10-24 02:52:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:06,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:52:06,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:52:06,098 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) [2024-10-24 02:52:06,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 02:52:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:06,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 02:52:06,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:52:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:06,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:52:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:08,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411671599] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:52:08,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:52:08,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-10-24 02:52:08,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277113308] [2024-10-24 02:52:08,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:52:08,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-24 02:52:08,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-24 02:52:08,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2024-10-24 02:52:08,131 INFO L87 Difference]: Start difference. First operand 38562 states and 49706 transitions. Second operand has 32 states, 32 states have (on average 8.5) internal successors, (272), 32 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:12,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:52:12,615 INFO L93 Difference]: Finished difference Result 101320 states and 130197 transitions. [2024-10-24 02:52:12,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-24 02:52:12,616 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 32 states have internal predecessors, (272), 0 states have call successors, (0), 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 99 [2024-10-24 02:52:12,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:52:12,696 INFO L225 Difference]: With dead ends: 101320 [2024-10-24 02:52:12,697 INFO L226 Difference]: Without dead ends: 65389 [2024-10-24 02:52:12,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1433 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1134, Invalid=4872, Unknown=0, NotChecked=0, Total=6006 [2024-10-24 02:52:12,711 INFO L432 NwaCegarLoop]: 1515 mSDtfsCounter, 16385 mSDsluCounter, 15719 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16385 SdHoareTripleChecker+Valid, 17234 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:52:12,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16385 Valid, 17234 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:52:12,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65389 states. [2024-10-24 02:52:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65389 to 40221. [2024-10-24 02:52:14,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40221 states, 40219 states have (on average 1.2698475844749995) internal successors, (51072), 40220 states have internal predecessors, (51072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40221 states to 40221 states and 51072 transitions. [2024-10-24 02:52:14,246 INFO L78 Accepts]: Start accepts. Automaton has 40221 states and 51072 transitions. Word has length 99 [2024-10-24 02:52:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:52:14,246 INFO L471 AbstractCegarLoop]: Abstraction has 40221 states and 51072 transitions. [2024-10-24 02:52:14,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.5) internal successors, (272), 32 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 02:52:14,246 INFO L276 IsEmpty]: Start isEmpty. Operand 40221 states and 51072 transitions. [2024-10-24 02:52:14,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-24 02:52:14,247 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:52:14,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 02:52:14,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 02:52:14,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:52:14,449 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:52:14,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:52:14,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1376355675, now seen corresponding path program 1 times [2024-10-24 02:52:14,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:52:14,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083449974] [2024-10-24 02:52:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:14,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:52:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:14,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:52:14,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083449974] [2024-10-24 02:52:14,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083449974] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:52:14,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732394610] [2024-10-24 02:52:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:52:14,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:52:14,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:52:14,757 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:52:14,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 02:52:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:52:14,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 02:52:14,906 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:52:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:15,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 02:52:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 02:52:16,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732394610] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 02:52:16,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 02:52:16,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-10-24 02:52:16,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220160141] [2024-10-24 02:52:16,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 02:52:16,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 02:52:16,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:52:16,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 02:52:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-10-24 02:52:16,270 INFO L87 Difference]: Start difference. First operand 40221 states and 51072 transitions. Second operand has 26 states, 26 states have (on average 11.076923076923077) internal successors, (288), 25 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)