./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem16_label04.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 90fb180caa8b6a5816e65dbd5894ace691fe27eeb9d4238d5c5bc9791f06c4a2 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 17:11:01,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 17:11:01,113 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 17:11:01,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 17:11:01,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 17:11:01,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 17:11:01,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 17:11:01,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 17:11:01,136 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 17:11:01,137 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 17:11:01,137 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 17:11:01,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 17:11:01,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 17:11:01,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 17:11:01,139 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 17:11:01,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 17:11:01,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 17:11:01,142 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 17:11:01,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 17:11:01,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 17:11:01,143 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 17:11:01,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 17:11:01,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 17:11:01,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 17:11:01,144 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 17:11:01,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 17:11:01,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 17:11:01,145 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 17:11:01,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 17:11:01,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 17:11:01,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 17:11:01,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 17:11:01,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 17:11:01,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 17:11:01,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 17:11:01,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 17:11:01,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 17:11:01,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 17:11:01,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 17:11:01,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 17:11:01,149 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 17:11:01,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 17:11:01,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90fb180caa8b6a5816e65dbd5894ace691fe27eeb9d4238d5c5bc9791f06c4a2 [2024-11-11 17:11:01,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 17:11:01,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 17:11:01,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 17:11:01,417 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 17:11:01,418 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 17:11:01,419 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label04.c [2024-11-11 17:11:02,864 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 17:11:03,196 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 17:11:03,197 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label04.c [2024-11-11 17:11:03,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54aad58da/7f835f8c16704528945474ce6fdb4c99/FLAGa7c366a98 [2024-11-11 17:11:03,234 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54aad58da/7f835f8c16704528945474ce6fdb4c99 [2024-11-11 17:11:03,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 17:11:03,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 17:11:03,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 17:11:03,242 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 17:11:03,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 17:11:03,248 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 05:11:03" (1/1) ... [2024-11-11 17:11:03,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1deef996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:03, skipping insertion in model container [2024-11-11 17:11:03,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 05:11:03" (1/1) ... [2024-11-11 17:11:03,306 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 17:11:03,551 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label04.c[3124,3137] [2024-11-11 17:11:03,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 17:11:03,918 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 17:11:03,942 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label04.c[3124,3137] [2024-11-11 17:11:04,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 17:11:04,105 INFO L204 MainTranslator]: Completed translation [2024-11-11 17:11:04,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04 WrapperNode [2024-11-11 17:11:04,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 17:11:04,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 17:11:04,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 17:11:04,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 17:11:04,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,284 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-11-11 17:11:04,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 17:11:04,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 17:11:04,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 17:11:04,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 17:11:04,296 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,311 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,424 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-11 17:11:04,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,486 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 17:11:04,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 17:11:04,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 17:11:04,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 17:11:04,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (1/1) ... [2024-11-11 17:11:04,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 17:11:04,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:11:04,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 17:11:04,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 17:11:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 17:11:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 17:11:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 17:11:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 17:11:04,676 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 17:11:04,678 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 17:11:06,728 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-11-11 17:11:06,729 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 17:11:06,752 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 17:11:06,752 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-11 17:11:06,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 05:11:06 BoogieIcfgContainer [2024-11-11 17:11:06,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 17:11:06,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 17:11:06,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 17:11:06,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 17:11:06,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 05:11:03" (1/3) ... [2024-11-11 17:11:06,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96eec84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 05:11:06, skipping insertion in model container [2024-11-11 17:11:06,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 05:11:04" (2/3) ... [2024-11-11 17:11:06,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96eec84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 05:11:06, skipping insertion in model container [2024-11-11 17:11:06,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 05:11:06" (3/3) ... [2024-11-11 17:11:06,761 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label04.c [2024-11-11 17:11:06,780 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 17:11:06,780 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 17:11:06,864 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 17:11:06,871 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;@708e941e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 17:11:06,872 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 17:11:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:06,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-11 17:11:06,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:06,887 INFO L218 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] [2024-11-11 17:11:06,891 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:06,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:06,899 INFO L85 PathProgramCache]: Analyzing trace with hash -716875070, now seen corresponding path program 1 times [2024-11-11 17:11:06,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:06,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186793408] [2024-11-11 17:11:06,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:06,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 17:11:07,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:07,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186793408] [2024-11-11 17:11:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186793408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:07,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:07,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:07,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169027922] [2024-11-11 17:11:07,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:07,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:11:07,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:11:07,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:11:07,451 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 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 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:10,241 INFO L93 Difference]: Finished difference Result 1456 states and 2764 transitions. [2024-11-11 17:11:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:11:10,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-11-11 17:11:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:10,258 INFO L225 Difference]: With dead ends: 1456 [2024-11-11 17:11:10,259 INFO L226 Difference]: Without dead ends: 991 [2024-11-11 17:11:10,263 INFO L434 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 [2024-11-11 17:11:10,266 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 976 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:10,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 347 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-11 17:11:10,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-11-11 17:11:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2024-11-11 17:11:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.4858585858585858) internal successors, (1471), 990 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1471 transitions. [2024-11-11 17:11:10,367 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1471 transitions. Word has length 28 [2024-11-11 17:11:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:10,368 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1471 transitions. [2024-11-11 17:11:10,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1471 transitions. [2024-11-11 17:11:10,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-11 17:11:10,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:10,372 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:10,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 17:11:10,372 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:10,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:10,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1283127025, now seen corresponding path program 1 times [2024-11-11 17:11:10,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:10,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466470300] [2024-11-11 17:11:10,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:10,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-11 17:11:10,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:10,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466470300] [2024-11-11 17:11:10,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466470300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:10,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:10,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:11:10,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896732545] [2024-11-11 17:11:10,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:10,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:10,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:10,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:10,681 INFO L87 Difference]: Start difference. First operand 991 states and 1471 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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) [2024-11-11 17:11:12,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:12,024 INFO L93 Difference]: Finished difference Result 2309 states and 3726 transitions. [2024-11-11 17:11:12,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:12,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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 115 [2024-11-11 17:11:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:12,031 INFO L225 Difference]: With dead ends: 2309 [2024-11-11 17:11:12,032 INFO L226 Difference]: Without dead ends: 1649 [2024-11-11 17:11:12,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:12,034 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 280 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:12,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 199 Invalid, 1194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-11 17:11:12,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2024-11-11 17:11:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1649. [2024-11-11 17:11:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1648 states have (on average 1.379247572815534) internal successors, (2273), 1648 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2273 transitions. [2024-11-11 17:11:12,069 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2273 transitions. Word has length 115 [2024-11-11 17:11:12,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:12,070 INFO L471 AbstractCegarLoop]: Abstraction has 1649 states and 2273 transitions. [2024-11-11 17:11:12,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 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) [2024-11-11 17:11:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2273 transitions. [2024-11-11 17:11:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-11 17:11:12,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:12,081 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:12,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 17:11:12,081 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:12,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:12,082 INFO L85 PathProgramCache]: Analyzing trace with hash 158615286, now seen corresponding path program 1 times [2024-11-11 17:11:12,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:12,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351450872] [2024-11-11 17:11:12,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:12,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-11 17:11:12,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:12,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351450872] [2024-11-11 17:11:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351450872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:12,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:12,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:11:12,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529772579] [2024-11-11 17:11:12,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:12,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:12,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:12,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:12,343 INFO L87 Difference]: Start difference. First operand 1649 states and 2273 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:13,741 INFO L93 Difference]: Finished difference Result 4283 states and 6132 transitions. [2024-11-11 17:11:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:13,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 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 194 [2024-11-11 17:11:13,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:13,753 INFO L225 Difference]: With dead ends: 4283 [2024-11-11 17:11:13,753 INFO L226 Difference]: Without dead ends: 2965 [2024-11-11 17:11:13,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:13,758 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 358 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:13,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 156 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-11 17:11:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2965 states. [2024-11-11 17:11:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2965 to 2636. [2024-11-11 17:11:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.3400379506641367) internal successors, (3531), 2635 states have internal predecessors, (3531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:13,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3531 transitions. [2024-11-11 17:11:13,814 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3531 transitions. Word has length 194 [2024-11-11 17:11:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:13,816 INFO L471 AbstractCegarLoop]: Abstraction has 2636 states and 3531 transitions. [2024-11-11 17:11:13,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3531 transitions. [2024-11-11 17:11:13,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-11 17:11:13,825 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:13,826 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:13,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 17:11:13,827 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:13,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1684873428, now seen corresponding path program 1 times [2024-11-11 17:11:13,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:13,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903436874] [2024-11-11 17:11:13,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:13,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-11 17:11:14,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:14,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903436874] [2024-11-11 17:11:14,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903436874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:14,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:14,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:11:14,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936063933] [2024-11-11 17:11:14,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:14,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:14,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:14,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:14,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:14,125 INFO L87 Difference]: Start difference. First operand 2636 states and 3531 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:15,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:15,366 INFO L93 Difference]: Finished difference Result 5599 states and 7527 transitions. [2024-11-11 17:11:15,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:15,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 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 270 [2024-11-11 17:11:15,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:15,379 INFO L225 Difference]: With dead ends: 5599 [2024-11-11 17:11:15,379 INFO L226 Difference]: Without dead ends: 3294 [2024-11-11 17:11:15,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:15,386 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 278 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:15,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 77 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-11 17:11:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2024-11-11 17:11:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3294. [2024-11-11 17:11:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 3293 states have (on average 1.2247191011235956) internal successors, (4033), 3293 states have internal predecessors, (4033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 4033 transitions. [2024-11-11 17:11:15,452 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 4033 transitions. Word has length 270 [2024-11-11 17:11:15,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:15,453 INFO L471 AbstractCegarLoop]: Abstraction has 3294 states and 4033 transitions. [2024-11-11 17:11:15,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:15,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 4033 transitions. [2024-11-11 17:11:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-11-11 17:11:15,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:15,461 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-11 17:11:15,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-11 17:11:15,461 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:15,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:15,462 INFO L85 PathProgramCache]: Analyzing trace with hash -497570456, now seen corresponding path program 1 times [2024-11-11 17:11:15,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:15,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873717136] [2024-11-11 17:11:15,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:15,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:15,892 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-11 17:11:15,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:15,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873717136] [2024-11-11 17:11:15,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873717136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:15,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:15,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:15,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566239257] [2024-11-11 17:11:15,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:15,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:15,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:15,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:15,901 INFO L87 Difference]: Start difference. First operand 3294 states and 4033 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:17,112 INFO L93 Difference]: Finished difference Result 6586 states and 8076 transitions. [2024-11-11 17:11:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:17,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 447 [2024-11-11 17:11:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:17,123 INFO L225 Difference]: With dead ends: 6586 [2024-11-11 17:11:17,123 INFO L226 Difference]: Without dead ends: 3294 [2024-11-11 17:11:17,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:17,128 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 288 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:17,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 538 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-11 17:11:17,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2024-11-11 17:11:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3294. [2024-11-11 17:11:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 3293 states have (on average 1.0567871242028546) internal successors, (3480), 3293 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 3480 transitions. [2024-11-11 17:11:17,177 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 3480 transitions. Word has length 447 [2024-11-11 17:11:17,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:17,177 INFO L471 AbstractCegarLoop]: Abstraction has 3294 states and 3480 transitions. [2024-11-11 17:11:17,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:17,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 3480 transitions. [2024-11-11 17:11:17,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2024-11-11 17:11:17,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:17,185 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:17,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-11 17:11:17,186 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:17,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:17,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1468600354, now seen corresponding path program 1 times [2024-11-11 17:11:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:17,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672710381] [2024-11-11 17:11:17,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:17,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 396 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-11 17:11:17,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:17,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672710381] [2024-11-11 17:11:17,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672710381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:17,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:17,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:17,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395298263] [2024-11-11 17:11:17,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:17,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:11:17,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:17,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:11:17,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:11:17,968 INFO L87 Difference]: Start difference. First operand 3294 states and 3480 transitions. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:19,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:19,549 INFO L93 Difference]: Finished difference Result 10865 states and 11555 transitions. [2024-11-11 17:11:19,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:11:19,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 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 499 [2024-11-11 17:11:19,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:19,574 INFO L225 Difference]: With dead ends: 10865 [2024-11-11 17:11:19,574 INFO L226 Difference]: Without dead ends: 7902 [2024-11-11 17:11:19,579 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:11:19,580 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 401 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:19,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 85 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-11 17:11:19,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7902 states. [2024-11-11 17:11:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7902 to 7242. [2024-11-11 17:11:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7242 states, 7241 states have (on average 1.0567601160060764) internal successors, (7652), 7241 states have internal predecessors, (7652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:19,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7242 states to 7242 states and 7652 transitions. [2024-11-11 17:11:19,707 INFO L78 Accepts]: Start accepts. Automaton has 7242 states and 7652 transitions. Word has length 499 [2024-11-11 17:11:19,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:19,708 INFO L471 AbstractCegarLoop]: Abstraction has 7242 states and 7652 transitions. [2024-11-11 17:11:19,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:19,708 INFO L276 IsEmpty]: Start isEmpty. Operand 7242 states and 7652 transitions. [2024-11-11 17:11:19,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2024-11-11 17:11:19,720 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:19,720 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:19,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-11 17:11:19,721 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:19,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:19,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1588765430, now seen corresponding path program 1 times [2024-11-11 17:11:19,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:19,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159295301] [2024-11-11 17:11:19,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:19,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2024-11-11 17:11:20,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:20,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159295301] [2024-11-11 17:11:20,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159295301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:20,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:20,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 17:11:20,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362887489] [2024-11-11 17:11:20,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:20,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:20,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:20,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:20,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:20,408 INFO L87 Difference]: Start difference. First operand 7242 states and 7652 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:21,436 INFO L93 Difference]: Finished difference Result 16787 states and 17775 transitions. [2024-11-11 17:11:21,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:21,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 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 595 [2024-11-11 17:11:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:21,473 INFO L225 Difference]: With dead ends: 16787 [2024-11-11 17:11:21,473 INFO L226 Difference]: Without dead ends: 9876 [2024-11-11 17:11:21,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:21,484 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 100 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:21,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 62 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-11 17:11:21,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9876 states. [2024-11-11 17:11:21,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9876 to 9545. [2024-11-11 17:11:21,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9545 states, 9544 states have (on average 1.0563704945515506) internal successors, (10082), 9544 states have internal predecessors, (10082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9545 states to 9545 states and 10082 transitions. [2024-11-11 17:11:21,675 INFO L78 Accepts]: Start accepts. Automaton has 9545 states and 10082 transitions. Word has length 595 [2024-11-11 17:11:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:21,676 INFO L471 AbstractCegarLoop]: Abstraction has 9545 states and 10082 transitions. [2024-11-11 17:11:21,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:21,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9545 states and 10082 transitions. [2024-11-11 17:11:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2024-11-11 17:11:21,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:21,696 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:21,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-11 17:11:21,697 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:21,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1913678050, now seen corresponding path program 1 times [2024-11-11 17:11:21,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:21,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85071392] [2024-11-11 17:11:21,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:21,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 735 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-11 17:11:22,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:22,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85071392] [2024-11-11 17:11:22,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85071392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:22,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:22,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:22,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457209596] [2024-11-11 17:11:22,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:22,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:22,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:22,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:22,324 INFO L87 Difference]: Start difference. First operand 9545 states and 10082 transitions. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:23,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:23,339 INFO L93 Difference]: Finished difference Result 22378 states and 23788 transitions. [2024-11-11 17:11:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:23,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 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 603 [2024-11-11 17:11:23,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:23,377 INFO L225 Difference]: With dead ends: 22378 [2024-11-11 17:11:23,378 INFO L226 Difference]: Without dead ends: 13493 [2024-11-11 17:11:23,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:23,391 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 224 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:23,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 38 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-11 17:11:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2024-11-11 17:11:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 13164. [2024-11-11 17:11:23,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13164 states, 13163 states have (on average 1.0607764187495252) internal successors, (13963), 13163 states have internal predecessors, (13963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:23,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13164 states to 13164 states and 13963 transitions. [2024-11-11 17:11:23,610 INFO L78 Accepts]: Start accepts. Automaton has 13164 states and 13963 transitions. Word has length 603 [2024-11-11 17:11:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:23,611 INFO L471 AbstractCegarLoop]: Abstraction has 13164 states and 13963 transitions. [2024-11-11 17:11:23,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 13164 states and 13963 transitions. [2024-11-11 17:11:23,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2024-11-11 17:11:23,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:23,621 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:23,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-11 17:11:23,621 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:23,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:23,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1109247991, now seen corresponding path program 1 times [2024-11-11 17:11:23,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:23,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229026325] [2024-11-11 17:11:23,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:23,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 807 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2024-11-11 17:11:24,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:24,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229026325] [2024-11-11 17:11:24,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229026325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:24,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:24,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:24,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890434993] [2024-11-11 17:11:24,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:24,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:11:24,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:24,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:11:24,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:11:24,710 INFO L87 Difference]: Start difference. First operand 13164 states and 13963 transitions. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:25,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:25,923 INFO L93 Difference]: Finished difference Result 25997 states and 27593 transitions. [2024-11-11 17:11:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:11:25,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 722 [2024-11-11 17:11:25,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:25,946 INFO L225 Difference]: With dead ends: 25997 [2024-11-11 17:11:25,946 INFO L226 Difference]: Without dead ends: 13164 [2024-11-11 17:11:25,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:11:25,960 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 268 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:25,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 123 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-11 17:11:25,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13164 states. [2024-11-11 17:11:26,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13164 to 13164. [2024-11-11 17:11:26,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13164 states, 13163 states have (on average 1.0603965661323407) internal successors, (13958), 13163 states have internal predecessors, (13958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13164 states to 13164 states and 13958 transitions. [2024-11-11 17:11:26,117 INFO L78 Accepts]: Start accepts. Automaton has 13164 states and 13958 transitions. Word has length 722 [2024-11-11 17:11:26,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:26,118 INFO L471 AbstractCegarLoop]: Abstraction has 13164 states and 13958 transitions. [2024-11-11 17:11:26,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand 13164 states and 13958 transitions. [2024-11-11 17:11:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2024-11-11 17:11:26,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:26,129 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:26,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-11 17:11:26,130 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:26,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:26,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1050631255, now seen corresponding path program 1 times [2024-11-11 17:11:26,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:26,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542902687] [2024-11-11 17:11:26,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:26,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1187 backedges. 526 proven. 0 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2024-11-11 17:11:26,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542902687] [2024-11-11 17:11:26,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542902687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:26,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:26,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:26,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615295696] [2024-11-11 17:11:26,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:26,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:26,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:26,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:26,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:26,729 INFO L87 Difference]: Start difference. First operand 13164 states and 13958 transitions. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:27,604 INFO L93 Difference]: Finished difference Result 28629 states and 30447 transitions. [2024-11-11 17:11:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 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 783 [2024-11-11 17:11:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:27,633 INFO L225 Difference]: With dead ends: 28629 [2024-11-11 17:11:27,633 INFO L226 Difference]: Without dead ends: 15796 [2024-11-11 17:11:27,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:27,646 INFO L435 NwaCegarLoop]: 431 mSDtfsCounter, 220 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:27,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 437 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 17:11:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15796 states. [2024-11-11 17:11:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15796 to 15467. [2024-11-11 17:11:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15467 states, 15466 states have (on average 1.047588258114574) internal successors, (16202), 15466 states have internal predecessors, (16202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15467 states to 15467 states and 16202 transitions. [2024-11-11 17:11:27,818 INFO L78 Accepts]: Start accepts. Automaton has 15467 states and 16202 transitions. Word has length 783 [2024-11-11 17:11:27,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:27,820 INFO L471 AbstractCegarLoop]: Abstraction has 15467 states and 16202 transitions. [2024-11-11 17:11:27,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:27,820 INFO L276 IsEmpty]: Start isEmpty. Operand 15467 states and 16202 transitions. [2024-11-11 17:11:27,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2024-11-11 17:11:27,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:27,833 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:27,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-11 17:11:27,834 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:27,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:27,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1190772430, now seen corresponding path program 1 times [2024-11-11 17:11:27,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:27,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838561388] [2024-11-11 17:11:27,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:27,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:28,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2024-11-11 17:11:28,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:28,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838561388] [2024-11-11 17:11:28,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838561388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:28,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:28,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:28,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522771764] [2024-11-11 17:11:28,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:28,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:28,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:28,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:28,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:28,971 INFO L87 Difference]: Start difference. First operand 15467 states and 16202 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:29,783 INFO L93 Difference]: Finished difference Result 30274 states and 31740 transitions. [2024-11-11 17:11:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:29,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 784 [2024-11-11 17:11:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:29,805 INFO L225 Difference]: With dead ends: 30274 [2024-11-11 17:11:29,806 INFO L226 Difference]: Without dead ends: 15467 [2024-11-11 17:11:29,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:29,818 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 339 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:29,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 377 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 17:11:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2024-11-11 17:11:29,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 14809. [2024-11-11 17:11:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14809 states, 14808 states have (on average 1.040653700702323) internal successors, (15410), 14808 states have internal predecessors, (15410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14809 states to 14809 states and 15410 transitions. [2024-11-11 17:11:29,980 INFO L78 Accepts]: Start accepts. Automaton has 14809 states and 15410 transitions. Word has length 784 [2024-11-11 17:11:29,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:29,981 INFO L471 AbstractCegarLoop]: Abstraction has 14809 states and 15410 transitions. [2024-11-11 17:11:29,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:29,982 INFO L276 IsEmpty]: Start isEmpty. Operand 14809 states and 15410 transitions. [2024-11-11 17:11:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1204 [2024-11-11 17:11:30,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:30,005 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:30,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-11 17:11:30,006 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:30,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash -701036074, now seen corresponding path program 1 times [2024-11-11 17:11:30,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:30,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868265193] [2024-11-11 17:11:30,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:30,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 1087 proven. 0 refuted. 0 times theorem prover too weak. 1884 trivial. 0 not checked. [2024-11-11 17:11:30,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:30,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868265193] [2024-11-11 17:11:30,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868265193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:30,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:30,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:30,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842498775] [2024-11-11 17:11:30,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:30,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:30,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:30,873 INFO L87 Difference]: Start difference. First operand 14809 states and 15410 transitions. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:31,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:31,649 INFO L93 Difference]: Finished difference Result 32577 states and 33948 transitions. [2024-11-11 17:11:31,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:31,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 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 1203 [2024-11-11 17:11:31,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:31,678 INFO L225 Difference]: With dead ends: 32577 [2024-11-11 17:11:31,678 INFO L226 Difference]: Without dead ends: 16125 [2024-11-11 17:11:31,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:31,691 INFO L435 NwaCegarLoop]: 411 mSDtfsCounter, 257 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:31,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 417 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 17:11:31,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2024-11-11 17:11:31,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 14480. [2024-11-11 17:11:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0362594101802611) internal successors, (15004), 14479 states have internal predecessors, (15004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 15004 transitions. [2024-11-11 17:11:31,848 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 15004 transitions. Word has length 1203 [2024-11-11 17:11:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:31,850 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 15004 transitions. [2024-11-11 17:11:31,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 15004 transitions. [2024-11-11 17:11:31,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1323 [2024-11-11 17:11:31,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:31,874 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:31,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-11 17:11:31,875 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:31,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1607012204, now seen corresponding path program 1 times [2024-11-11 17:11:31,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:31,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909183159] [2024-11-11 17:11:31,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:31,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4080 backedges. 2668 proven. 0 refuted. 0 times theorem prover too weak. 1412 trivial. 0 not checked. [2024-11-11 17:11:32,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:32,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909183159] [2024-11-11 17:11:32,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909183159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:32,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:32,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:32,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577755824] [2024-11-11 17:11:32,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:32,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:32,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:32,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:32,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:32,610 INFO L87 Difference]: Start difference. First operand 14480 states and 15004 transitions. Second operand has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:33,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:33,375 INFO L93 Difference]: Finished difference Result 29616 states and 30699 transitions. [2024-11-11 17:11:33,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:33,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 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 1322 [2024-11-11 17:11:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:33,401 INFO L225 Difference]: With dead ends: 29616 [2024-11-11 17:11:33,402 INFO L226 Difference]: Without dead ends: 15467 [2024-11-11 17:11:33,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:33,416 INFO L435 NwaCegarLoop]: 418 mSDtfsCounter, 192 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:33,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 424 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 17:11:33,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15467 states. [2024-11-11 17:11:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15467 to 14809. [2024-11-11 17:11:33,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14809 states, 14808 states have (on average 1.0314019448946516) internal successors, (15273), 14808 states have internal predecessors, (15273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14809 states to 14809 states and 15273 transitions. [2024-11-11 17:11:33,654 INFO L78 Accepts]: Start accepts. Automaton has 14809 states and 15273 transitions. Word has length 1322 [2024-11-11 17:11:33,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:33,655 INFO L471 AbstractCegarLoop]: Abstraction has 14809 states and 15273 transitions. [2024-11-11 17:11:33,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 14809 states and 15273 transitions. [2024-11-11 17:11:33,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1352 [2024-11-11 17:11:33,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:33,695 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:33,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-11 17:11:33,696 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:33,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:33,697 INFO L85 PathProgramCache]: Analyzing trace with hash -307328779, now seen corresponding path program 1 times [2024-11-11 17:11:33,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:33,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367000028] [2024-11-11 17:11:33,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:33,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:34,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 2841 proven. 0 refuted. 0 times theorem prover too weak. 1367 trivial. 0 not checked. [2024-11-11 17:11:34,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:34,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367000028] [2024-11-11 17:11:34,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367000028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:34,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:34,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:34,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288469215] [2024-11-11 17:11:34,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:34,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:34,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:34,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:34,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:34,378 INFO L87 Difference]: Start difference. First operand 14809 states and 15273 transitions. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:35,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:35,049 INFO L93 Difference]: Finished difference Result 29287 states and 30212 transitions. [2024-11-11 17:11:35,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:35,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 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 1351 [2024-11-11 17:11:35,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:35,071 INFO L225 Difference]: With dead ends: 29287 [2024-11-11 17:11:35,072 INFO L226 Difference]: Without dead ends: 14809 [2024-11-11 17:11:35,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:35,083 INFO L435 NwaCegarLoop]: 418 mSDtfsCounter, 193 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:35,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 424 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 17:11:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14809 states. [2024-11-11 17:11:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14809 to 14480. [2024-11-11 17:11:35,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0249326610953795) internal successors, (14840), 14479 states have internal predecessors, (14840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 14840 transitions. [2024-11-11 17:11:35,221 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 14840 transitions. Word has length 1351 [2024-11-11 17:11:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:35,222 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 14840 transitions. [2024-11-11 17:11:35,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:35,222 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 14840 transitions. [2024-11-11 17:11:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1362 [2024-11-11 17:11:35,246 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:35,247 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:35,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-11 17:11:35,248 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:35,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:35,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2066986105, now seen corresponding path program 1 times [2024-11-11 17:11:35,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:35,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131588528] [2024-11-11 17:11:35,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:35,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:36,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3368 backedges. 2260 proven. 0 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2024-11-11 17:11:36,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:36,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131588528] [2024-11-11 17:11:36,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131588528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:36,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:36,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 17:11:36,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085267182] [2024-11-11 17:11:36,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:36,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:11:36,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:36,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:11:36,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:11:36,658 INFO L87 Difference]: Start difference. First operand 14480 states and 14840 transitions. Second operand has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:37,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:37,615 INFO L93 Difference]: Finished difference Result 28312 states and 29028 transitions. [2024-11-11 17:11:37,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-11 17:11:37,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 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 1361 [2024-11-11 17:11:37,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:37,633 INFO L225 Difference]: With dead ends: 28312 [2024-11-11 17:11:37,633 INFO L226 Difference]: Without dead ends: 14492 [2024-11-11 17:11:37,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-11 17:11:37,645 INFO L435 NwaCegarLoop]: 426 mSDtfsCounter, 218 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:37,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 439 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-11 17:11:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14492 states. [2024-11-11 17:11:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14492 to 14480. [2024-11-11 17:11:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0247945300089785) internal successors, (14838), 14479 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:37,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 14838 transitions. [2024-11-11 17:11:37,773 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 14838 transitions. Word has length 1361 [2024-11-11 17:11:37,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:37,774 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 14838 transitions. [2024-11-11 17:11:37,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.75) internal successors, (723), 4 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:37,775 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 14838 transitions. [2024-11-11 17:11:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1410 [2024-11-11 17:11:37,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:37,795 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:37,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-11 17:11:37,796 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:37,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:37,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1152900176, now seen corresponding path program 1 times [2024-11-11 17:11:37,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:37,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607030167] [2024-11-11 17:11:37,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:37,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4531 backedges. 2436 proven. 0 refuted. 0 times theorem prover too weak. 2095 trivial. 0 not checked. [2024-11-11 17:11:39,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:39,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607030167] [2024-11-11 17:11:39,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607030167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:39,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:39,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:39,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930724846] [2024-11-11 17:11:39,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:39,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:39,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:39,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:39,068 INFO L87 Difference]: Start difference. First operand 14480 states and 14838 transitions. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:39,739 INFO L93 Difference]: Finished difference Result 28958 states and 29681 transitions. [2024-11-11 17:11:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:39,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 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 1409 [2024-11-11 17:11:39,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:39,760 INFO L225 Difference]: With dead ends: 28958 [2024-11-11 17:11:39,760 INFO L226 Difference]: Without dead ends: 15138 [2024-11-11 17:11:39,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:39,770 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:39,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 434 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 17:11:39,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2024-11-11 17:11:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 15138. [2024-11-11 17:11:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 1.024047037061505) internal successors, (15501), 15137 states have internal predecessors, (15501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 15501 transitions. [2024-11-11 17:11:39,901 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 15501 transitions. Word has length 1409 [2024-11-11 17:11:39,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:39,902 INFO L471 AbstractCegarLoop]: Abstraction has 15138 states and 15501 transitions. [2024-11-11 17:11:39,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:39,903 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 15501 transitions. [2024-11-11 17:11:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1433 [2024-11-11 17:11:39,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:39,924 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-11 17:11:39,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-11 17:11:39,925 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:39,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1353976321, now seen corresponding path program 1 times [2024-11-11 17:11:39,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:39,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123575547] [2024-11-11 17:11:39,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:39,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4335 backedges. 879 proven. 0 refuted. 0 times theorem prover too weak. 3456 trivial. 0 not checked. [2024-11-11 17:11:41,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:41,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123575547] [2024-11-11 17:11:41,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123575547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:41,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:41,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 17:11:41,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343880383] [2024-11-11 17:11:41,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:41,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:11:41,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:41,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:11:41,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:11:41,261 INFO L87 Difference]: Start difference. First operand 15138 states and 15501 transitions. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:42,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:42,250 INFO L93 Difference]: Finished difference Result 29620 states and 30342 transitions. [2024-11-11 17:11:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:11:42,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 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 1432 [2024-11-11 17:11:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:42,265 INFO L225 Difference]: With dead ends: 29620 [2024-11-11 17:11:42,265 INFO L226 Difference]: Without dead ends: 15138 [2024-11-11 17:11:42,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:11:42,276 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 253 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:42,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 423 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-11 17:11:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2024-11-11 17:11:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 14151. [2024-11-11 17:11:42,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14151 states, 14150 states have (on average 1.0180918727915194) internal successors, (14406), 14150 states have internal predecessors, (14406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:42,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14151 states to 14151 states and 14406 transitions. [2024-11-11 17:11:42,402 INFO L78 Accepts]: Start accepts. Automaton has 14151 states and 14406 transitions. Word has length 1432 [2024-11-11 17:11:42,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:42,403 INFO L471 AbstractCegarLoop]: Abstraction has 14151 states and 14406 transitions. [2024-11-11 17:11:42,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:42,404 INFO L276 IsEmpty]: Start isEmpty. Operand 14151 states and 14406 transitions. [2024-11-11 17:11:42,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1874 [2024-11-11 17:11:42,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:42,435 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:42,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-11 17:11:42,436 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:42,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:42,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1950534880, now seen corresponding path program 1 times [2024-11-11 17:11:42,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:42,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829519239] [2024-11-11 17:11:42,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:42,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6422 backedges. 1646 proven. 0 refuted. 0 times theorem prover too weak. 4776 trivial. 0 not checked. [2024-11-11 17:11:44,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:44,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829519239] [2024-11-11 17:11:44,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829519239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:44,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:44,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 17:11:44,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283123760] [2024-11-11 17:11:44,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:44,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 17:11:44,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 17:11:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:11:44,898 INFO L87 Difference]: Start difference. First operand 14151 states and 14406 transitions. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:45,829 INFO L93 Difference]: Finished difference Result 30940 states and 31517 transitions. [2024-11-11 17:11:45,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 17:11:45,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 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 1873 [2024-11-11 17:11:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:45,843 INFO L225 Difference]: With dead ends: 30940 [2024-11-11 17:11:45,843 INFO L226 Difference]: Without dead ends: 17441 [2024-11-11 17:11:45,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-11 17:11:45,853 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 139 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:45,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 36 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-11 17:11:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17441 states. [2024-11-11 17:11:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17441 to 14151. [2024-11-11 17:11:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14151 states, 14150 states have (on average 1.0178798586572437) internal successors, (14403), 14150 states have internal predecessors, (14403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14151 states to 14151 states and 14403 transitions. [2024-11-11 17:11:45,968 INFO L78 Accepts]: Start accepts. Automaton has 14151 states and 14403 transitions. Word has length 1873 [2024-11-11 17:11:45,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:45,969 INFO L471 AbstractCegarLoop]: Abstraction has 14151 states and 14403 transitions. [2024-11-11 17:11:45,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:45,969 INFO L276 IsEmpty]: Start isEmpty. Operand 14151 states and 14403 transitions. [2024-11-11 17:11:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1913 [2024-11-11 17:11:45,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:45,996 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-11 17:11:45,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-11 17:11:45,996 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:45,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:45,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1753422718, now seen corresponding path program 1 times [2024-11-11 17:11:45,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:45,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971137809] [2024-11-11 17:11:45,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:45,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6603 backedges. 3458 proven. 0 refuted. 0 times theorem prover too weak. 3145 trivial. 0 not checked. [2024-11-11 17:11:47,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:47,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971137809] [2024-11-11 17:11:47,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971137809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:47,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 17:11:47,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-11 17:11:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682307231] [2024-11-11 17:11:47,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:47,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:47,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:47,597 INFO L87 Difference]: Start difference. First operand 14151 states and 14403 transitions. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:48,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:48,322 INFO L93 Difference]: Finished difference Result 30932 states and 31484 transitions. [2024-11-11 17:11:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:48,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 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 1912 [2024-11-11 17:11:48,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:48,338 INFO L225 Difference]: With dead ends: 30932 [2024-11-11 17:11:48,338 INFO L226 Difference]: Without dead ends: 17441 [2024-11-11 17:11:48,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-11 17:11:48,346 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 209 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:48,346 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 44 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-11 17:11:48,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17441 states. [2024-11-11 17:11:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17441 to 15138. [2024-11-11 17:11:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 1.0174407081984542) internal successors, (15401), 15137 states have internal predecessors, (15401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 15401 transitions. [2024-11-11 17:11:48,502 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 15401 transitions. Word has length 1912 [2024-11-11 17:11:48,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:48,503 INFO L471 AbstractCegarLoop]: Abstraction has 15138 states and 15401 transitions. [2024-11-11 17:11:48,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:48,503 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 15401 transitions. [2024-11-11 17:11:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1954 [2024-11-11 17:11:48,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:48,535 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-11 17:11:48,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-11 17:11:48,535 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:48,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:48,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1357154159, now seen corresponding path program 1 times [2024-11-11 17:11:48,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:48,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973835268] [2024-11-11 17:11:48,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:48,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7277 backedges. 5380 proven. 41 refuted. 0 times theorem prover too weak. 1856 trivial. 0 not checked. [2024-11-11 17:11:51,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:51,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973835268] [2024-11-11 17:11:51,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973835268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:11:51,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784518568] [2024-11-11 17:11:51,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:51,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:11:51,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:11:51,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 17:11:51,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 17:11:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:51,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 17:11:51,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:11:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7277 backedges. 4038 proven. 0 refuted. 0 times theorem prover too weak. 3239 trivial. 0 not checked. [2024-11-11 17:11:52,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 17:11:52,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784518568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:52,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 17:11:52,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-11 17:11:52,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943096532] [2024-11-11 17:11:52,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:52,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:52,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:52,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:52,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-11 17:11:52,603 INFO L87 Difference]: Start difference. First operand 15138 states and 15401 transitions. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:53,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:53,282 INFO L93 Difference]: Finished difference Result 29616 states and 30138 transitions. [2024-11-11 17:11:53,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:53,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 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 1953 [2024-11-11 17:11:53,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:53,298 INFO L225 Difference]: With dead ends: 29616 [2024-11-11 17:11:53,298 INFO L226 Difference]: Without dead ends: 15138 [2024-11-11 17:11:53,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1957 GetRequests, 1953 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-11 17:11:53,309 INFO L435 NwaCegarLoop]: 420 mSDtfsCounter, 120 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:53,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 426 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 17:11:53,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2024-11-11 17:11:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 15138. [2024-11-11 17:11:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15138 states, 15137 states have (on average 1.0171764550439322) internal successors, (15397), 15137 states have internal predecessors, (15397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:53,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15138 states to 15138 states and 15397 transitions. [2024-11-11 17:11:53,427 INFO L78 Accepts]: Start accepts. Automaton has 15138 states and 15397 transitions. Word has length 1953 [2024-11-11 17:11:53,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:53,428 INFO L471 AbstractCegarLoop]: Abstraction has 15138 states and 15397 transitions. [2024-11-11 17:11:53,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:53,428 INFO L276 IsEmpty]: Start isEmpty. Operand 15138 states and 15397 transitions. [2024-11-11 17:11:53,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1975 [2024-11-11 17:11:53,449 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:53,450 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:53,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 17:11:53,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:11:53,652 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:53,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:53,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1531808275, now seen corresponding path program 1 times [2024-11-11 17:11:53,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:53,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655326102] [2024-11-11 17:11:53,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:53,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 5050 proven. 140 refuted. 0 times theorem prover too weak. 1912 trivial. 0 not checked. [2024-11-11 17:11:56,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:11:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655326102] [2024-11-11 17:11:56,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655326102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:11:56,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938071222] [2024-11-11 17:11:56,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:56,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:11:56,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:11:56,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 17:11:56,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 17:11:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:11:56,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-11 17:11:56,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 17:11:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 4241 proven. 0 refuted. 0 times theorem prover too weak. 2861 trivial. 0 not checked. [2024-11-11 17:11:56,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 17:11:56,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938071222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 17:11:56,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-11 17:11:56,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-11 17:11:56,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047916682] [2024-11-11 17:11:56,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 17:11:56,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-11 17:11:56,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 17:11:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-11 17:11:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-11 17:11:56,921 INFO L87 Difference]: Start difference. First operand 15138 states and 15397 transitions. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:57,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 17:11:57,640 INFO L93 Difference]: Finished difference Result 31590 states and 32136 transitions. [2024-11-11 17:11:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-11 17:11:57,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 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 1974 [2024-11-11 17:11:57,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 17:11:57,655 INFO L225 Difference]: With dead ends: 31590 [2024-11-11 17:11:57,655 INFO L226 Difference]: Without dead ends: 17112 [2024-11-11 17:11:57,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1979 GetRequests, 1974 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-11 17:11:57,665 INFO L435 NwaCegarLoop]: 421 mSDtfsCounter, 221 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 17:11:57,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 427 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 17:11:57,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17112 states. [2024-11-11 17:11:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17112 to 16125. [2024-11-11 17:11:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16125 states, 16124 states have (on average 1.0164351277598611) internal successors, (16389), 16124 states have internal predecessors, (16389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16125 states to 16125 states and 16389 transitions. [2024-11-11 17:11:57,809 INFO L78 Accepts]: Start accepts. Automaton has 16125 states and 16389 transitions. Word has length 1974 [2024-11-11 17:11:57,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 17:11:57,810 INFO L471 AbstractCegarLoop]: Abstraction has 16125 states and 16389 transitions. [2024-11-11 17:11:57,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 17:11:57,810 INFO L276 IsEmpty]: Start isEmpty. Operand 16125 states and 16389 transitions. [2024-11-11 17:11:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2006 [2024-11-11 17:11:57,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 17:11:57,836 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 17:11:57,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-11 17:11:58,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-11 17:11:58,037 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 17:11:58,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 17:11:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash -800797702, now seen corresponding path program 1 times [2024-11-11 17:11:58,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 17:11:58,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758898905] [2024-11-11 17:11:58,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:11:58,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 17:11:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:12:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 5548 proven. 78 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2024-11-11 17:12:00,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 17:12:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758898905] [2024-11-11 17:12:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758898905] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 17:12:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96895113] [2024-11-11 17:12:00,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 17:12:00,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 17:12:00,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 17:12:00,689 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 17:12:00,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 17:12:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 17:12:01,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 2308 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-11 17:12:01,206 INFO L279 TraceCheckSpWp]: Computing forward predicates...