./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem16_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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_label20.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 10843b53b0c8d626e0b45edf6995c892da25187fbdbb4d013770994aea6c76bb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 10:44:59,636 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 10:44:59,697 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 10:44:59,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 10:44:59,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 10:44:59,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 10:44:59,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 10:44:59,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 10:44:59,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 10:44:59,763 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 10:44:59,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 10:44:59,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 10:44:59,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 10:44:59,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 10:44:59,765 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 10:44:59,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 10:44:59,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 10:44:59,765 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 10:44:59,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 10:44:59,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 10:44:59,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 10:44:59,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 10:44:59,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 10:44:59,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 10:44:59,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 10:44:59,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 10:44:59,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 10:44:59,771 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 10:44:59,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 10:44:59,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 10:44:59,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 10:44:59,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 10:44:59,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:44:59,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 10:44:59,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 10:44:59,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 10:44:59,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 10:44:59,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 10:44:59,772 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 10:44:59,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 10:44:59,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 10:44:59,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 10:44:59,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10843b53b0c8d626e0b45edf6995c892da25187fbdbb4d013770994aea6c76bb [2024-11-18 10:44:59,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 10:44:59,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 10:44:59,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 10:44:59,978 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 10:44:59,979 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 10:44:59,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label20.c [2024-11-18 10:45:01,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 10:45:01,656 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 10:45:01,657 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label20.c [2024-11-18 10:45:01,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7867ab477/32b01d9cca4e48ecb1af6f86ee598183/FLAG3fb317ca7 [2024-11-18 10:45:01,692 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7867ab477/32b01d9cca4e48ecb1af6f86ee598183 [2024-11-18 10:45:01,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 10:45:01,697 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 10:45:01,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 10:45:01,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 10:45:01,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 10:45:01,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:45:01" (1/1) ... [2024-11-18 10:45:01,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66aad29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:01, skipping insertion in model container [2024-11-18 10:45:01,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:45:01" (1/1) ... [2024-11-18 10:45:01,776 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 10:45:01,946 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_label20.c[2717,2730] [2024-11-18 10:45:02,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:45:02,298 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 10:45:02,315 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_label20.c[2717,2730] [2024-11-18 10:45:02,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 10:45:02,460 INFO L204 MainTranslator]: Completed translation [2024-11-18 10:45:02,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02 WrapperNode [2024-11-18 10:45:02,461 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 10:45:02,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 10:45:02,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 10:45:02,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 10:45:02,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,594 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1770 [2024-11-18 10:45:02,594 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 10:45:02,595 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 10:45:02,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 10:45:02,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 10:45:02,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,615 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,658 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]. [2024-11-18 10:45:02,659 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,659 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 10:45:02,777 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 10:45:02,777 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 10:45:02,777 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 10:45:02,778 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (1/1) ... [2024-11-18 10:45:02,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 10:45:02,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:45:02,860 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) [2024-11-18 10:45:02,866 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 [2024-11-18 10:45:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 10:45:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 10:45:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 10:45:02,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 10:45:02,970 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 10:45:02,972 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 10:45:04,575 INFO L? ?]: Removed 276 outVars from TransFormulas that were not future-live. [2024-11-18 10:45:04,575 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 10:45:04,591 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 10:45:04,591 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 10:45:04,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:45:04 BoogieIcfgContainer [2024-11-18 10:45:04,595 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 10:45:04,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 10:45:04,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 10:45:04,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 10:45:04,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:45:01" (1/3) ... [2024-11-18 10:45:04,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2673a799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:45:04, skipping insertion in model container [2024-11-18 10:45:04,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:45:02" (2/3) ... [2024-11-18 10:45:04,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2673a799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:45:04, skipping insertion in model container [2024-11-18 10:45:04,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:45:04" (3/3) ... [2024-11-18 10:45:04,602 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label20.c [2024-11-18 10:45:04,614 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 10:45:04,614 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 10:45:04,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 10:45:04,669 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;@f98df1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 10:45:04,669 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 10:45:04,673 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) [2024-11-18 10:45:04,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 10:45:04,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:04,678 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:45:04,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:04,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:04,682 INFO L85 PathProgramCache]: Analyzing trace with hash -593706766, now seen corresponding path program 1 times [2024-11-18 10:45:04,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:04,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288987979] [2024-11-18 10:45:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:04,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:45:04,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:04,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288987979] [2024-11-18 10:45:04,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288987979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:04,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:04,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:45:04,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993165785] [2024-11-18 10:45:04,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:04,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:04,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:04,902 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 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:06,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:06,481 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2024-11-18 10:45:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-18 10:45:06,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:06,501 INFO L225 Difference]: With dead ends: 1122 [2024-11-18 10:45:06,501 INFO L226 Difference]: Without dead ends: 662 [2024-11-18 10:45:06,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:06,509 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 336 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:06,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 223 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:45:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-18 10:45:06,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-11-18 10:45:06,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.5824508320726172) internal successors, (1046), 661 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1046 transitions. [2024-11-18 10:45:06,620 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1046 transitions. Word has length 24 [2024-11-18 10:45:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:06,624 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1046 transitions. [2024-11-18 10:45:06,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1046 transitions. [2024-11-18 10:45:06,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-18 10:45:06,626 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:06,627 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 10:45:06,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 10:45:06,627 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:06,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:06,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1262911625, now seen corresponding path program 1 times [2024-11-18 10:45:06,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:06,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894316438] [2024-11-18 10:45:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:06,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:45:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:06,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894316438] [2024-11-18 10:45:06,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894316438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:06,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:06,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:45:06,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431177458] [2024-11-18 10:45:06,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:06,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:06,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:06,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:06,848 INFO L87 Difference]: Start difference. First operand 662 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:07,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:07,867 INFO L93 Difference]: Finished difference Result 1651 states and 2539 transitions. [2024-11-18 10:45:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:07,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-18 10:45:07,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:07,871 INFO L225 Difference]: With dead ends: 1651 [2024-11-18 10:45:07,871 INFO L226 Difference]: Without dead ends: 991 [2024-11-18 10:45:07,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:07,873 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 338 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 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, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:07,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 77 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:45:07,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-11-18 10:45:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2024-11-18 10:45:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.3767676767676769) internal successors, (1363), 990 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:07,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1363 transitions. [2024-11-18 10:45:07,891 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1363 transitions. Word has length 95 [2024-11-18 10:45:07,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:07,893 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1363 transitions. [2024-11-18 10:45:07,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1363 transitions. [2024-11-18 10:45:07,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-18 10:45:07,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:07,895 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 10:45:07,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 10:45:07,895 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:07,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:07,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1365031106, now seen corresponding path program 1 times [2024-11-18 10:45:07,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:07,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28824035] [2024-11-18 10:45:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:07,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:45:08,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:08,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28824035] [2024-11-18 10:45:08,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28824035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:08,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:08,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:45:08,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494449749] [2024-11-18 10:45:08,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:08,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:08,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:08,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:08,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:08,026 INFO L87 Difference]: Start difference. First operand 991 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:09,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:09,550 INFO L93 Difference]: Finished difference Result 2967 states and 4084 transitions. [2024-11-18 10:45:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:09,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2024-11-18 10:45:09,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:09,556 INFO L225 Difference]: With dead ends: 2967 [2024-11-18 10:45:09,556 INFO L226 Difference]: Without dead ends: 1978 [2024-11-18 10:45:09,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:09,558 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 289 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:09,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 209 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 10:45:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2024-11-18 10:45:09,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2024-11-18 10:45:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.2468386444107233) internal successors, (2465), 1977 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:09,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2465 transitions. [2024-11-18 10:45:09,582 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2465 transitions. Word has length 96 [2024-11-18 10:45:09,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:09,583 INFO L471 AbstractCegarLoop]: Abstraction has 1978 states and 2465 transitions. [2024-11-18 10:45:09,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:09,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2465 transitions. [2024-11-18 10:45:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-18 10:45:09,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:09,585 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 10:45:09,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 10:45:09,586 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:09,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:09,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1623655327, now seen corresponding path program 1 times [2024-11-18 10:45:09,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:09,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138262654] [2024-11-18 10:45:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:09,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:09,671 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 10:45:09,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:09,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138262654] [2024-11-18 10:45:09,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138262654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:09,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:09,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:45:09,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837429452] [2024-11-18 10:45:09,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:09,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:09,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:09,673 INFO L87 Difference]: Start difference. First operand 1978 states and 2465 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:10,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:10,696 INFO L93 Difference]: Finished difference Result 4612 states and 5852 transitions. [2024-11-18 10:45:10,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:10,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2024-11-18 10:45:10,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:10,703 INFO L225 Difference]: With dead ends: 4612 [2024-11-18 10:45:10,704 INFO L226 Difference]: Without dead ends: 2636 [2024-11-18 10:45:10,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:10,706 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 360 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:10,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 539 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:45:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2024-11-18 10:45:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2636. [2024-11-18 10:45:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.21707779886148) internal successors, (3207), 2635 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:10,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3207 transitions. [2024-11-18 10:45:10,734 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3207 transitions. Word has length 111 [2024-11-18 10:45:10,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:10,735 INFO L471 AbstractCegarLoop]: Abstraction has 2636 states and 3207 transitions. [2024-11-18 10:45:10,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:10,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3207 transitions. [2024-11-18 10:45:10,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2024-11-18 10:45:10,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:10,739 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-18 10:45:10,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 10:45:10,740 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:10,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:10,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1197571519, now seen corresponding path program 1 times [2024-11-18 10:45:10,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:10,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782371682] [2024-11-18 10:45:10,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:10,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 10:45:10,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:10,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782371682] [2024-11-18 10:45:10,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782371682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:10,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:10,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:45:10,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9377986] [2024-11-18 10:45:10,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:10,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:10,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:10,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:10,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:10,958 INFO L87 Difference]: Start difference. First operand 2636 states and 3207 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:12,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:12,032 INFO L93 Difference]: Finished difference Result 6586 states and 8078 transitions. [2024-11-18 10:45:12,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:12,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 296 [2024-11-18 10:45:12,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:12,042 INFO L225 Difference]: With dead ends: 6586 [2024-11-18 10:45:12,042 INFO L226 Difference]: Without dead ends: 3294 [2024-11-18 10:45:12,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:12,046 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 358 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:12,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 156 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:45:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2024-11-18 10:45:12,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3294. [2024-11-18 10:45:12,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 3293 states have (on average 1.0652900091102337) internal successors, (3508), 3293 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 3508 transitions. [2024-11-18 10:45:12,143 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 3508 transitions. Word has length 296 [2024-11-18 10:45:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:12,147 INFO L471 AbstractCegarLoop]: Abstraction has 3294 states and 3508 transitions. [2024-11-18 10:45:12,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:12,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 3508 transitions. [2024-11-18 10:45:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-18 10:45:12,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:12,154 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-18 10:45:12,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 10:45:12,155 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:12,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:12,155 INFO L85 PathProgramCache]: Analyzing trace with hash -452962044, now seen corresponding path program 1 times [2024-11-18 10:45:12,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:12,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487403916] [2024-11-18 10:45:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:12,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2024-11-18 10:45:12,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:12,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487403916] [2024-11-18 10:45:12,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487403916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:12,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:12,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:45:12,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136940079] [2024-11-18 10:45:12,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:12,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:12,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:12,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:12,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:12,516 INFO L87 Difference]: Start difference. First operand 3294 states and 3508 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:13,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:13,293 INFO L93 Difference]: Finished difference Result 9549 states and 10185 transitions. [2024-11-18 10:45:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:13,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 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 462 [2024-11-18 10:45:13,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:13,308 INFO L225 Difference]: With dead ends: 9549 [2024-11-18 10:45:13,308 INFO L226 Difference]: Without dead ends: 6257 [2024-11-18 10:45:13,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:13,312 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 240 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:13,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 71 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:45:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2024-11-18 10:45:13,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 6255. [2024-11-18 10:45:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6255 states, 6254 states have (on average 1.0606012152222577) internal successors, (6633), 6254 states have internal predecessors, (6633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6255 states to 6255 states and 6633 transitions. [2024-11-18 10:45:13,381 INFO L78 Accepts]: Start accepts. Automaton has 6255 states and 6633 transitions. Word has length 462 [2024-11-18 10:45:13,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:13,381 INFO L471 AbstractCegarLoop]: Abstraction has 6255 states and 6633 transitions. [2024-11-18 10:45:13,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:13,382 INFO L276 IsEmpty]: Start isEmpty. Operand 6255 states and 6633 transitions. [2024-11-18 10:45:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2024-11-18 10:45:13,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:13,387 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:45:13,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 10:45:13,388 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:13,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:13,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1266456220, now seen corresponding path program 1 times [2024-11-18 10:45:13,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:13,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717735445] [2024-11-18 10:45:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:13,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-18 10:45:14,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:14,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717735445] [2024-11-18 10:45:14,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717735445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:14,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:14,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:45:14,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344492809] [2024-11-18 10:45:14,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:14,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:45:14,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:45:14,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:45:14,010 INFO L87 Difference]: Start difference. First operand 6255 states and 6633 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:14,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:14,979 INFO L93 Difference]: Finished difference Result 12179 states and 12932 transitions. [2024-11-18 10:45:14,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:45:14,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 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 486 [2024-11-18 10:45:14,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:14,993 INFO L225 Difference]: With dead ends: 12179 [2024-11-18 10:45:14,994 INFO L226 Difference]: Without dead ends: 6255 [2024-11-18 10:45:14,997 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 10:45:14,998 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 127 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:14,998 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 126 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:45:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6255 states. [2024-11-18 10:45:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6255 to 6255. [2024-11-18 10:45:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6255 states, 6254 states have (on average 1.0604413175567637) internal successors, (6632), 6254 states have internal predecessors, (6632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6255 states to 6255 states and 6632 transitions. [2024-11-18 10:45:15,068 INFO L78 Accepts]: Start accepts. Automaton has 6255 states and 6632 transitions. Word has length 486 [2024-11-18 10:45:15,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:15,069 INFO L471 AbstractCegarLoop]: Abstraction has 6255 states and 6632 transitions. [2024-11-18 10:45:15,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 6255 states and 6632 transitions. [2024-11-18 10:45:15,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2024-11-18 10:45:15,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:15,081 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-11-18 10:45:15,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 10:45:15,081 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:15,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:15,082 INFO L85 PathProgramCache]: Analyzing trace with hash 648084013, now seen corresponding path program 1 times [2024-11-18 10:45:15,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:15,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857112497] [2024-11-18 10:45:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:15,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-18 10:45:15,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:15,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857112497] [2024-11-18 10:45:15,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857112497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:15,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:15,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:45:15,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604212668] [2024-11-18 10:45:15,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:15,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:15,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:15,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:15,781 INFO L87 Difference]: Start difference. First operand 6255 states and 6632 transitions. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:16,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:16,751 INFO L93 Difference]: Finished difference Result 15140 states and 16162 transitions. [2024-11-18 10:45:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:16,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 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 601 [2024-11-18 10:45:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:16,772 INFO L225 Difference]: With dead ends: 15140 [2024-11-18 10:45:16,772 INFO L226 Difference]: Without dead ends: 9216 [2024-11-18 10:45:16,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:16,779 INFO L432 NwaCegarLoop]: 420 mSDtfsCounter, 219 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:16,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 426 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:45:16,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9216 states. [2024-11-18 10:45:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9216 to 8887. [2024-11-18 10:45:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8887 states, 8886 states have (on average 1.0481656538374973) internal successors, (9314), 8886 states have internal predecessors, (9314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8887 states to 8887 states and 9314 transitions. [2024-11-18 10:45:16,867 INFO L78 Accepts]: Start accepts. Automaton has 8887 states and 9314 transitions. Word has length 601 [2024-11-18 10:45:16,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:16,868 INFO L471 AbstractCegarLoop]: Abstraction has 8887 states and 9314 transitions. [2024-11-18 10:45:16,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:16,872 INFO L276 IsEmpty]: Start isEmpty. Operand 8887 states and 9314 transitions. [2024-11-18 10:45:16,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2024-11-18 10:45:16,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:16,880 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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] [2024-11-18 10:45:16,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 10:45:16,880 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:16,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:16,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1946616943, now seen corresponding path program 1 times [2024-11-18 10:45:16,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:16,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505338058] [2024-11-18 10:45:16,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:16,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:17,249 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 691 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-18 10:45:17,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:17,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505338058] [2024-11-18 10:45:17,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505338058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:17,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:17,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:45:17,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157886560] [2024-11-18 10:45:17,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:17,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:17,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:17,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:17,253 INFO L87 Difference]: Start difference. First operand 8887 states and 9314 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:17,970 INFO L93 Difference]: Finished difference Result 20404 states and 21512 transitions. [2024-11-18 10:45:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:17,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 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 664 [2024-11-18 10:45:17,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:17,984 INFO L225 Difference]: With dead ends: 20404 [2024-11-18 10:45:17,984 INFO L226 Difference]: Without dead ends: 11848 [2024-11-18 10:45:17,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:17,991 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 186 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:17,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 55 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:45:17,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2024-11-18 10:45:18,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 11848. [2024-11-18 10:45:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11848 states, 11847 states have (on average 1.0506457330969865) internal successors, (12447), 11847 states have internal predecessors, (12447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 12447 transitions. [2024-11-18 10:45:18,083 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 12447 transitions. Word has length 664 [2024-11-18 10:45:18,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:18,084 INFO L471 AbstractCegarLoop]: Abstraction has 11848 states and 12447 transitions. [2024-11-18 10:45:18,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 12447 transitions. [2024-11-18 10:45:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 955 [2024-11-18 10:45:18,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:18,094 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:45:18,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 10:45:18,094 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:18,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:18,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1265307716, now seen corresponding path program 1 times [2024-11-18 10:45:18,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:18,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719625992] [2024-11-18 10:45:18,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:18,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 939 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2024-11-18 10:45:19,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:19,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719625992] [2024-11-18 10:45:19,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719625992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:19,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:19,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 10:45:19,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669806654] [2024-11-18 10:45:19,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:19,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:19,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:19,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:19,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:19,013 INFO L87 Difference]: Start difference. First operand 11848 states and 12447 transitions. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 2 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:19,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:19,638 INFO L93 Difference]: Finished difference Result 23694 states and 24898 transitions. [2024-11-18 10:45:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:19,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 2 states have internal predecessors, (393), 0 states have call successors, (0), 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 954 [2024-11-18 10:45:19,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:19,655 INFO L225 Difference]: With dead ends: 23694 [2024-11-18 10:45:19,655 INFO L226 Difference]: Without dead ends: 12177 [2024-11-18 10:45:19,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:19,665 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 85 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:19,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 102 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:45:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12177 states. [2024-11-18 10:45:19,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12177 to 12177. [2024-11-18 10:45:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12177 states, 12176 states have (on average 1.0498521681997373) internal successors, (12783), 12176 states have internal predecessors, (12783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:19,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12177 states to 12177 states and 12783 transitions. [2024-11-18 10:45:19,779 INFO L78 Accepts]: Start accepts. Automaton has 12177 states and 12783 transitions. Word has length 954 [2024-11-18 10:45:19,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:19,779 INFO L471 AbstractCegarLoop]: Abstraction has 12177 states and 12783 transitions. [2024-11-18 10:45:19,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 2 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:19,780 INFO L276 IsEmpty]: Start isEmpty. Operand 12177 states and 12783 transitions. [2024-11-18 10:45:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2024-11-18 10:45:19,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:19,792 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:45:19,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 10:45:19,792 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:19,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1723750616, now seen corresponding path program 1 times [2024-11-18 10:45:19,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:19,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755843138] [2024-11-18 10:45:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1817 backedges. 1294 proven. 0 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2024-11-18 10:45:20,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:20,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755843138] [2024-11-18 10:45:20,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755843138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:20,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:20,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:45:20,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568721855] [2024-11-18 10:45:20,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:20,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:20,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:20,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:20,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:20,443 INFO L87 Difference]: Start difference. First operand 12177 states and 12783 transitions. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:21,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:21,264 INFO L93 Difference]: Finished difference Result 26655 states and 28127 transitions. [2024-11-18 10:45:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:21,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 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 962 [2024-11-18 10:45:21,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:21,307 INFO L225 Difference]: With dead ends: 26655 [2024-11-18 10:45:21,307 INFO L226 Difference]: Without dead ends: 15138 [2024-11-18 10:45:21,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:21,317 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 192 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:21,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 434 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:45:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2024-11-18 10:45:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 14480. [2024-11-18 10:45:21,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.046135782857932) internal successors, (15147), 14479 states have internal predecessors, (15147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 15147 transitions. [2024-11-18 10:45:21,438 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 15147 transitions. Word has length 962 [2024-11-18 10:45:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:21,439 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 15147 transitions. [2024-11-18 10:45:21,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 15147 transitions. [2024-11-18 10:45:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2024-11-18 10:45:21,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:21,452 INFO L215 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:45:21,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 10:45:21,452 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:21,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:21,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1438915882, now seen corresponding path program 1 times [2024-11-18 10:45:21,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:21,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030588016] [2024-11-18 10:45:21,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:21,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:22,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 480 proven. 695 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-18 10:45:22,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:22,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030588016] [2024-11-18 10:45:22,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030588016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:45:22,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053996817] [2024-11-18 10:45:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:22,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:45:22,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:45:22,616 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) [2024-11-18 10:45:22,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 10:45:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:22,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:45:22,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:45:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1388 backedges. 743 proven. 0 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2024-11-18 10:45:23,267 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:45:23,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053996817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:23,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:45:23,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 10:45:23,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622301299] [2024-11-18 10:45:23,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:23,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:23,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:23,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:23,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:45:23,270 INFO L87 Difference]: Start difference. First operand 14480 states and 15147 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:24,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:24,063 INFO L93 Difference]: Finished difference Result 28300 states and 29625 transitions. [2024-11-18 10:45:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:24,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 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 972 [2024-11-18 10:45:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:24,084 INFO L225 Difference]: With dead ends: 28300 [2024-11-18 10:45:24,085 INFO L226 Difference]: Without dead ends: 14480 [2024-11-18 10:45:24,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 972 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-18 10:45:24,097 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 95 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:24,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 377 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:45:24,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14480 states. [2024-11-18 10:45:24,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14480 to 14480. [2024-11-18 10:45:24,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.0414393259202983) internal successors, (15079), 14479 states have internal predecessors, (15079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:24,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 15079 transitions. [2024-11-18 10:45:24,229 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 15079 transitions. Word has length 972 [2024-11-18 10:45:24,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:24,230 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 15079 transitions. [2024-11-18 10:45:24,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:24,231 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 15079 transitions. [2024-11-18 10:45:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2024-11-18 10:45:24,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:24,330 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:45:24,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 10:45:24,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 10:45:24,532 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:24,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1578792524, now seen corresponding path program 1 times [2024-11-18 10:45:24,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:24,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582671104] [2024-11-18 10:45:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:24,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2365 backedges. 1686 proven. 0 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2024-11-18 10:45:25,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582671104] [2024-11-18 10:45:25,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582671104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:25,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:25,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:45:25,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979740888] [2024-11-18 10:45:25,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:25,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:25,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:25,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:25,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:25,276 INFO L87 Difference]: Start difference. First operand 14480 states and 15079 transitions. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:26,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:26,028 INFO L93 Difference]: Finished difference Result 28300 states and 29489 transitions. [2024-11-18 10:45:26,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:26,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 1108 [2024-11-18 10:45:26,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:26,050 INFO L225 Difference]: With dead ends: 28300 [2024-11-18 10:45:26,050 INFO L226 Difference]: Without dead ends: 14480 [2024-11-18 10:45:26,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:26,062 INFO L432 NwaCegarLoop]: 423 mSDtfsCounter, 220 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:26,063 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 429 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:45:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14480 states. [2024-11-18 10:45:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14480 to 13493. [2024-11-18 10:45:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13493 states, 13492 states have (on average 1.0286095463978655) internal successors, (13878), 13492 states have internal predecessors, (13878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13493 states to 13493 states and 13878 transitions. [2024-11-18 10:45:26,255 INFO L78 Accepts]: Start accepts. Automaton has 13493 states and 13878 transitions. Word has length 1108 [2024-11-18 10:45:26,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:26,256 INFO L471 AbstractCegarLoop]: Abstraction has 13493 states and 13878 transitions. [2024-11-18 10:45:26,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:26,256 INFO L276 IsEmpty]: Start isEmpty. Operand 13493 states and 13878 transitions. [2024-11-18 10:45:26,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1110 [2024-11-18 10:45:26,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:26,296 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:45:26,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 10:45:26,296 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:26,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:26,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1146003203, now seen corresponding path program 1 times [2024-11-18 10:45:26,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:26,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632426305] [2024-11-18 10:45:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:26,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:26,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2371 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2024-11-18 10:45:26,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:26,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632426305] [2024-11-18 10:45:26,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632426305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:26,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:26,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:45:26,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343899506] [2024-11-18 10:45:26,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:26,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:26,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:26,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:26,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:26,910 INFO L87 Difference]: Start difference. First operand 13493 states and 13878 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:27,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:27,627 INFO L93 Difference]: Finished difference Result 28958 states and 29852 transitions. [2024-11-18 10:45:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:27,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 1109 [2024-11-18 10:45:27,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:27,660 INFO L225 Difference]: With dead ends: 28958 [2024-11-18 10:45:27,660 INFO L226 Difference]: Without dead ends: 14809 [2024-11-18 10:45:27,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:27,677 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 274 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:27,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 411 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:45:27,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14809 states. [2024-11-18 10:45:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14809 to 12506. [2024-11-18 10:45:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12506 states, 12505 states have (on average 1.02718912435026) internal successors, (12845), 12505 states have internal predecessors, (12845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:27,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12506 states to 12506 states and 12845 transitions. [2024-11-18 10:45:27,884 INFO L78 Accepts]: Start accepts. Automaton has 12506 states and 12845 transitions. Word has length 1109 [2024-11-18 10:45:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:27,885 INFO L471 AbstractCegarLoop]: Abstraction has 12506 states and 12845 transitions. [2024-11-18 10:45:27,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:27,886 INFO L276 IsEmpty]: Start isEmpty. Operand 12506 states and 12845 transitions. [2024-11-18 10:45:27,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1252 [2024-11-18 10:45:27,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:27,901 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:45:27,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 10:45:27,902 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:27,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:27,902 INFO L85 PathProgramCache]: Analyzing trace with hash 635265805, now seen corresponding path program 1 times [2024-11-18 10:45:27,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:27,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335628623] [2024-11-18 10:45:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:27,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2594 backedges. 1859 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2024-11-18 10:45:29,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:29,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335628623] [2024-11-18 10:45:29,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335628623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:29,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:29,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:45:29,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81985961] [2024-11-18 10:45:29,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:29,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:45:29,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:29,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:45:29,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:45:29,248 INFO L87 Difference]: Start difference. First operand 12506 states and 12845 transitions. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:30,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:30,164 INFO L93 Difference]: Finished difference Result 24361 states and 25030 transitions. [2024-11-18 10:45:30,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 10:45:30,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 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 1251 [2024-11-18 10:45:30,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:30,176 INFO L225 Difference]: With dead ends: 24361 [2024-11-18 10:45:30,176 INFO L226 Difference]: Without dead ends: 12515 [2024-11-18 10:45:30,185 INFO L431 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 [2024-11-18 10:45:30,186 INFO L432 NwaCegarLoop]: 424 mSDtfsCounter, 217 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:30,186 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 438 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:45:30,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12515 states. [2024-11-18 10:45:30,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12515 to 12506. [2024-11-18 10:45:30,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12506 states, 12505 states have (on average 1.02702918832467) internal successors, (12843), 12505 states have internal predecessors, (12843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12506 states to 12506 states and 12843 transitions. [2024-11-18 10:45:30,367 INFO L78 Accepts]: Start accepts. Automaton has 12506 states and 12843 transitions. Word has length 1251 [2024-11-18 10:45:30,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:30,368 INFO L471 AbstractCegarLoop]: Abstraction has 12506 states and 12843 transitions. [2024-11-18 10:45:30,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 12506 states and 12843 transitions. [2024-11-18 10:45:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1267 [2024-11-18 10:45:30,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:30,394 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:45:30,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 10:45:30,394 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:30,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:30,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1001379953, now seen corresponding path program 1 times [2024-11-18 10:45:30,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:30,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813784256] [2024-11-18 10:45:30,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:30,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3357 backedges. 1948 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2024-11-18 10:45:31,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:31,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813784256] [2024-11-18 10:45:31,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813784256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:31,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:31,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:45:31,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757445266] [2024-11-18 10:45:31,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:31,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:31,655 INFO L87 Difference]: Start difference. First operand 12506 states and 12843 transitions. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:32,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:32,319 INFO L93 Difference]: Finished difference Result 25010 states and 25686 transitions. [2024-11-18 10:45:32,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:32,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 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 1266 [2024-11-18 10:45:32,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:32,329 INFO L225 Difference]: With dead ends: 25010 [2024-11-18 10:45:32,330 INFO L226 Difference]: Without dead ends: 13164 [2024-11-18 10:45:32,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:32,337 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:32,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 432 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:45:32,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13164 states. [2024-11-18 10:45:32,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13164 to 13164. [2024-11-18 10:45:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13164 states, 13163 states have (on average 1.026057889538859) internal successors, (13506), 13163 states have internal predecessors, (13506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:32,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13164 states to 13164 states and 13506 transitions. [2024-11-18 10:45:32,418 INFO L78 Accepts]: Start accepts. Automaton has 13164 states and 13506 transitions. Word has length 1266 [2024-11-18 10:45:32,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:32,418 INFO L471 AbstractCegarLoop]: Abstraction has 13164 states and 13506 transitions. [2024-11-18 10:45:32,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand 13164 states and 13506 transitions. [2024-11-18 10:45:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1292 [2024-11-18 10:45:32,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:32,431 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:45:32,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 10:45:32,431 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:32,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:32,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1735710957, now seen corresponding path program 1 times [2024-11-18 10:45:32,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:32,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300435132] [2024-11-18 10:45:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:32,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2934 backedges. 2029 proven. 0 refuted. 0 times theorem prover too weak. 905 trivial. 0 not checked. [2024-11-18 10:45:33,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:33,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300435132] [2024-11-18 10:45:33,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300435132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:33,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:33,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 10:45:33,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131494189] [2024-11-18 10:45:33,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:33,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:45:33,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:33,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:45:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:45:33,350 INFO L87 Difference]: Start difference. First operand 13164 states and 13506 transitions. Second operand has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:34,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:34,207 INFO L93 Difference]: Finished difference Result 25997 states and 26683 transitions. [2024-11-18 10:45:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:45:34,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 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 1291 [2024-11-18 10:45:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:34,224 INFO L225 Difference]: With dead ends: 25997 [2024-11-18 10:45:34,225 INFO L226 Difference]: Without dead ends: 13493 [2024-11-18 10:45:34,236 INFO L431 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 [2024-11-18 10:45:34,237 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 120 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:34,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 556 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:45:34,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2024-11-18 10:45:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 13493. [2024-11-18 10:45:34,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13493 states, 13492 states have (on average 1.025496590572191) internal successors, (13836), 13492 states have internal predecessors, (13836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:34,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13493 states to 13493 states and 13836 transitions. [2024-11-18 10:45:34,328 INFO L78 Accepts]: Start accepts. Automaton has 13493 states and 13836 transitions. Word has length 1291 [2024-11-18 10:45:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:34,328 INFO L471 AbstractCegarLoop]: Abstraction has 13493 states and 13836 transitions. [2024-11-18 10:45:34,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:34,329 INFO L276 IsEmpty]: Start isEmpty. Operand 13493 states and 13836 transitions. [2024-11-18 10:45:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1321 [2024-11-18 10:45:34,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:34,341 INFO L215 NwaCegarLoop]: trace histogram [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, 8, 8, 8, 8, 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, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:45:34,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 10:45:34,341 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:34,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:34,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1681482444, now seen corresponding path program 1 times [2024-11-18 10:45:34,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:34,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133963182] [2024-11-18 10:45:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:34,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3376 backedges. 648 proven. 0 refuted. 0 times theorem prover too weak. 2728 trivial. 0 not checked. [2024-11-18 10:45:35,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133963182] [2024-11-18 10:45:35,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133963182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:35,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:35,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:45:35,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977053317] [2024-11-18 10:45:35,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:35,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:35,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:35,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:35,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:35,584 INFO L87 Difference]: Start difference. First operand 13493 states and 13836 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:36,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:36,287 INFO L93 Difference]: Finished difference Result 26655 states and 27339 transitions. [2024-11-18 10:45:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:36,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 1320 [2024-11-18 10:45:36,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:36,299 INFO L225 Difference]: With dead ends: 26655 [2024-11-18 10:45:36,299 INFO L226 Difference]: Without dead ends: 13493 [2024-11-18 10:45:36,308 INFO L431 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 [2024-11-18 10:45:36,308 INFO L432 NwaCegarLoop]: 365 mSDtfsCounter, 269 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:36,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 371 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:45:36,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2024-11-18 10:45:36,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 12835. [2024-11-18 10:45:36,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.0216612124045503) internal successors, (13112), 12834 states have internal predecessors, (13112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13112 transitions. [2024-11-18 10:45:36,398 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13112 transitions. Word has length 1320 [2024-11-18 10:45:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:36,398 INFO L471 AbstractCegarLoop]: Abstraction has 12835 states and 13112 transitions. [2024-11-18 10:45:36,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13112 transitions. [2024-11-18 10:45:36,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1368 [2024-11-18 10:45:36,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:36,413 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2024-11-18 10:45:36,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 10:45:36,414 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:36,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:36,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2030082296, now seen corresponding path program 1 times [2024-11-18 10:45:36,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:36,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503863823] [2024-11-18 10:45:36,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:36,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2982 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 2829 trivial. 0 not checked. [2024-11-18 10:45:37,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:37,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503863823] [2024-11-18 10:45:37,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503863823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:37,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:37,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:45:37,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583714530] [2024-11-18 10:45:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:37,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:37,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:37,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:37,215 INFO L87 Difference]: Start difference. First operand 12835 states and 13112 transitions. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:38,251 INFO L93 Difference]: Finished difference Result 28958 states and 29609 transitions. [2024-11-18 10:45:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:38,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 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 1367 [2024-11-18 10:45:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:38,269 INFO L225 Difference]: With dead ends: 28958 [2024-11-18 10:45:38,270 INFO L226 Difference]: Without dead ends: 16454 [2024-11-18 10:45:38,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 10:45:38,281 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 309 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:38,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 414 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 10:45:38,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16454 states. [2024-11-18 10:45:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16454 to 14809. [2024-11-18 10:45:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14809 states, 14808 states have (on average 1.02215018908698) internal successors, (15136), 14808 states have internal predecessors, (15136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:38,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14809 states to 14809 states and 15136 transitions. [2024-11-18 10:45:38,470 INFO L78 Accepts]: Start accepts. Automaton has 14809 states and 15136 transitions. Word has length 1367 [2024-11-18 10:45:38,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:38,471 INFO L471 AbstractCegarLoop]: Abstraction has 14809 states and 15136 transitions. [2024-11-18 10:45:38,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:38,471 INFO L276 IsEmpty]: Start isEmpty. Operand 14809 states and 15136 transitions. [2024-11-18 10:45:38,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1672 [2024-11-18 10:45:38,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:38,522 INFO L215 NwaCegarLoop]: trace histogram [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, 8, 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, 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, 4, 4, 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] [2024-11-18 10:45:38,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 10:45:38,522 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:38,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1632256309, now seen corresponding path program 1 times [2024-11-18 10:45:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:38,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681683813] [2024-11-18 10:45:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:38,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4984 backedges. 3326 proven. 202 refuted. 0 times theorem prover too weak. 1456 trivial. 0 not checked. [2024-11-18 10:45:40,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:40,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681683813] [2024-11-18 10:45:40,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681683813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:45:40,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486649507] [2024-11-18 10:45:40,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:40,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:45:40,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:45:40,611 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) [2024-11-18 10:45:40,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 10:45:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:40,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:45:40,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:45:41,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4984 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 4787 trivial. 0 not checked. [2024-11-18 10:45:41,055 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:45:41,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486649507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:41,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:45:41,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-18 10:45:41,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69849195] [2024-11-18 10:45:41,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:41,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:45:41,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:45:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:45:41,061 INFO L87 Difference]: Start difference. First operand 14809 states and 15136 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:41,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:41,809 INFO L93 Difference]: Finished difference Result 28958 states and 29605 transitions. [2024-11-18 10:45:41,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:45:41,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 1671 [2024-11-18 10:45:41,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:41,827 INFO L225 Difference]: With dead ends: 28958 [2024-11-18 10:45:41,827 INFO L226 Difference]: Without dead ends: 14809 [2024-11-18 10:45:41,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1675 GetRequests, 1670 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-18 10:45:41,834 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 337 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:41,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 53 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:45:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14809 states. [2024-11-18 10:45:41,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14809 to 14151. [2024-11-18 10:45:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14151 states, 14150 states have (on average 1.017809187279152) internal successors, (14402), 14150 states have internal predecessors, (14402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:41,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14151 states to 14151 states and 14402 transitions. [2024-11-18 10:45:41,929 INFO L78 Accepts]: Start accepts. Automaton has 14151 states and 14402 transitions. Word has length 1671 [2024-11-18 10:45:41,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:41,930 INFO L471 AbstractCegarLoop]: Abstraction has 14151 states and 14402 transitions. [2024-11-18 10:45:41,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand 14151 states and 14402 transitions. [2024-11-18 10:45:41,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1704 [2024-11-18 10:45:41,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:41,949 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2024-11-18 10:45:41,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 10:45:42,149 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,SelfDestructingSolverStorable19 [2024-11-18 10:45:42,150 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:42,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:42,151 INFO L85 PathProgramCache]: Analyzing trace with hash 108332155, now seen corresponding path program 1 times [2024-11-18 10:45:42,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:42,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389123389] [2024-11-18 10:45:42,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:42,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:43,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5176 backedges. 3422 proven. 202 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2024-11-18 10:45:43,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:43,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389123389] [2024-11-18 10:45:43,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389123389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:45:43,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317248753] [2024-11-18 10:45:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:43,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:45:43,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:45:43,405 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) [2024-11-18 10:45:43,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 10:45:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:43,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-18 10:45:43,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:45:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5176 backedges. 2328 proven. 201 refuted. 0 times theorem prover too weak. 2647 trivial. 0 not checked. [2024-11-18 10:45:46,555 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 10:45:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5176 backedges. 2328 proven. 201 refuted. 0 times theorem prover too weak. 2647 trivial. 0 not checked. [2024-11-18 10:45:50,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317248753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 10:45:50,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 10:45:50,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-18 10:45:50,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580315625] [2024-11-18 10:45:50,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 10:45:50,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 10:45:50,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:50,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 10:45:50,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 10:45:50,759 INFO L87 Difference]: Start difference. First operand 14151 states and 14402 transitions. Second operand has 10 states, 10 states have (on average 174.7) internal successors, (1747), 9 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:54,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:54,602 INFO L93 Difference]: Finished difference Result 28629 states and 29138 transitions. [2024-11-18 10:45:54,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 10:45:54,602 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 174.7) internal successors, (1747), 9 states have internal predecessors, (1747), 0 states have call successors, (0), 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 1703 [2024-11-18 10:45:54,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:54,616 INFO L225 Difference]: With dead ends: 28629 [2024-11-18 10:45:54,617 INFO L226 Difference]: Without dead ends: 15138 [2024-11-18 10:45:54,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3415 GetRequests, 3401 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2024-11-18 10:45:54,626 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1745 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6103 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 6246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 6103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:54,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 80 Invalid, 6246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 6103 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-18 10:45:54,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15138 states. [2024-11-18 10:45:54,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15138 to 13822. [2024-11-18 10:45:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13822 states, 13821 states have (on average 1.0144707329426235) internal successors, (14021), 13821 states have internal predecessors, (14021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13822 states to 13822 states and 14021 transitions. [2024-11-18 10:45:54,725 INFO L78 Accepts]: Start accepts. Automaton has 13822 states and 14021 transitions. Word has length 1703 [2024-11-18 10:45:54,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:54,725 INFO L471 AbstractCegarLoop]: Abstraction has 13822 states and 14021 transitions. [2024-11-18 10:45:54,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 174.7) internal successors, (1747), 9 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:54,726 INFO L276 IsEmpty]: Start isEmpty. Operand 13822 states and 14021 transitions. [2024-11-18 10:45:54,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1759 [2024-11-18 10:45:54,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:54,744 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:45:54,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 10:45:54,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:45:54,949 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:54,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:54,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1865611638, now seen corresponding path program 1 times [2024-11-18 10:45:54,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:54,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226906431] [2024-11-18 10:45:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:54,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:45:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6028 backedges. 2496 proven. 0 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2024-11-18 10:45:56,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:45:56,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226906431] [2024-11-18 10:45:56,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226906431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:45:56,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 10:45:56,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 10:45:56,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634952387] [2024-11-18 10:45:56,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:45:56,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 10:45:56,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:45:56,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 10:45:56,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-18 10:45:56,642 INFO L87 Difference]: Start difference. First operand 13822 states and 14021 transitions. Second operand has 4 states, 4 states have (on average 168.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:45:57,729 INFO L93 Difference]: Finished difference Result 27642 states and 28043 transitions. [2024-11-18 10:45:57,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 10:45:57,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 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 1758 [2024-11-18 10:45:57,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:45:57,742 INFO L225 Difference]: With dead ends: 27642 [2024-11-18 10:45:57,742 INFO L226 Difference]: Without dead ends: 14151 [2024-11-18 10:45:57,749 INFO L431 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 [2024-11-18 10:45:57,750 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 268 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 10:45:57,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 108 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 10:45:57,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14151 states. [2024-11-18 10:45:57,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14151 to 14151. [2024-11-18 10:45:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14151 states, 14150 states have (on average 1.0142756183745583) internal successors, (14352), 14150 states have internal predecessors, (14352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14151 states to 14151 states and 14352 transitions. [2024-11-18 10:45:57,846 INFO L78 Accepts]: Start accepts. Automaton has 14151 states and 14352 transitions. Word has length 1758 [2024-11-18 10:45:57,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:45:57,846 INFO L471 AbstractCegarLoop]: Abstraction has 14151 states and 14352 transitions. [2024-11-18 10:45:57,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:45:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 14151 states and 14352 transitions. [2024-11-18 10:45:57,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1822 [2024-11-18 10:45:57,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:45:57,866 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:45:57,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 10:45:57,867 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:45:57,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:45:57,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1331285251, now seen corresponding path program 1 times [2024-11-18 10:45:57,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:45:57,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993669773] [2024-11-18 10:45:57,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:45:57,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:45:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6283 backedges. 4140 proven. 984 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2024-11-18 10:46:00,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:00,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993669773] [2024-11-18 10:46:00,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993669773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:46:00,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776013889] [2024-11-18 10:46:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:00,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:46:00,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:46:00,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:46:00,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 10:46:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:01,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:46:01,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:46:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6283 backedges. 4181 proven. 0 refuted. 0 times theorem prover too weak. 2102 trivial. 0 not checked. [2024-11-18 10:46:01,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:46:01,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776013889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:01,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:46:01,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-18 10:46:01,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186257007] [2024-11-18 10:46:01,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:01,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:01,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:01,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:01,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:46:01,534 INFO L87 Difference]: Start difference. First operand 14151 states and 14352 transitions. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:02,241 INFO L93 Difference]: Finished difference Result 27642 states and 28040 transitions. [2024-11-18 10:46:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:02,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 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 1821 [2024-11-18 10:46:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:02,253 INFO L225 Difference]: With dead ends: 27642 [2024-11-18 10:46:02,254 INFO L226 Difference]: Without dead ends: 14151 [2024-11-18 10:46:02,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1830 GetRequests, 1824 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 10:46:02,261 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 65 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:02,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 411 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 10:46:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14151 states. [2024-11-18 10:46:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14151 to 14151. [2024-11-18 10:46:02,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14151 states, 14150 states have (on average 1.0130035335689045) internal successors, (14334), 14150 states have internal predecessors, (14334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14151 states to 14151 states and 14334 transitions. [2024-11-18 10:46:02,356 INFO L78 Accepts]: Start accepts. Automaton has 14151 states and 14334 transitions. Word has length 1821 [2024-11-18 10:46:02,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:02,357 INFO L471 AbstractCegarLoop]: Abstraction has 14151 states and 14334 transitions. [2024-11-18 10:46:02,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:02,357 INFO L276 IsEmpty]: Start isEmpty. Operand 14151 states and 14334 transitions. [2024-11-18 10:46:02,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1906 [2024-11-18 10:46:02,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:02,377 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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] [2024-11-18 10:46:02,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 10:46:02,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:46:02,579 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:02,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:02,579 INFO L85 PathProgramCache]: Analyzing trace with hash -556057465, now seen corresponding path program 1 times [2024-11-18 10:46:02,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:02,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376917420] [2024-11-18 10:46:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:02,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:05,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7770 backedges. 2932 proven. 2534 refuted. 0 times theorem prover too weak. 2304 trivial. 0 not checked. [2024-11-18 10:46:05,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:05,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376917420] [2024-11-18 10:46:05,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376917420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:46:05,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113061882] [2024-11-18 10:46:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:05,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:46:05,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:46:05,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:46:05,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 10:46:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:05,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 2207 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 10:46:05,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:46:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7770 backedges. 4650 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-18 10:46:06,231 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:46:06,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113061882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:06,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:46:06,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-18 10:46:06,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952770955] [2024-11-18 10:46:06,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:06,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:06,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:06,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:06,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:46:06,234 INFO L87 Difference]: Start difference. First operand 14151 states and 14334 transitions. Second operand has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:06,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:06,941 INFO L93 Difference]: Finished difference Result 27642 states and 28004 transitions. [2024-11-18 10:46:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:06,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 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 1905 [2024-11-18 10:46:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:06,953 INFO L225 Difference]: With dead ends: 27642 [2024-11-18 10:46:06,953 INFO L226 Difference]: Without dead ends: 14151 [2024-11-18 10:46:06,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1912 GetRequests, 1905 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:46:06,962 INFO L432 NwaCegarLoop]: 418 mSDtfsCounter, 122 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:06,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 423 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 10:46:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14151 states. [2024-11-18 10:46:07,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14151 to 14151. [2024-11-18 10:46:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14151 states, 14150 states have (on average 1.012720848056537) internal successors, (14330), 14150 states have internal predecessors, (14330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14151 states to 14151 states and 14330 transitions. [2024-11-18 10:46:07,053 INFO L78 Accepts]: Start accepts. Automaton has 14151 states and 14330 transitions. Word has length 1905 [2024-11-18 10:46:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:07,053 INFO L471 AbstractCegarLoop]: Abstraction has 14151 states and 14330 transitions. [2024-11-18 10:46:07,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 14151 states and 14330 transitions. [2024-11-18 10:46:07,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1927 [2024-11-18 10:46:07,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:07,072 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:07,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 10:46:07,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-18 10:46:07,278 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:07,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:07,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1780407959, now seen corresponding path program 1 times [2024-11-18 10:46:07,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:07,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263826043] [2024-11-18 10:46:07,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:07,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 2107 proven. 3755 refuted. 0 times theorem prover too weak. 1618 trivial. 0 not checked. [2024-11-18 10:46:10,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:10,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263826043] [2024-11-18 10:46:10,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263826043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:46:10,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858870494] [2024-11-18 10:46:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:10,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:46:10,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:46:10,402 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:46:10,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 10:46:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:10,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 10:46:10,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:46:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7480 backedges. 1346 proven. 0 refuted. 0 times theorem prover too weak. 6134 trivial. 0 not checked. [2024-11-18 10:46:11,293 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 10:46:11,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858870494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 10:46:11,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 10:46:11,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-18 10:46:11,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636016072] [2024-11-18 10:46:11,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 10:46:11,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 10:46:11,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 10:46:11,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 10:46:11,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:46:11,295 INFO L87 Difference]: Start difference. First operand 14151 states and 14330 transitions. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:12,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 10:46:12,119 INFO L93 Difference]: Finished difference Result 30603 states and 31011 transitions. [2024-11-18 10:46:12,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 10:46:12,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 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 1926 [2024-11-18 10:46:12,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 10:46:12,135 INFO L225 Difference]: With dead ends: 30603 [2024-11-18 10:46:12,135 INFO L226 Difference]: Without dead ends: 17112 [2024-11-18 10:46:12,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1933 GetRequests, 1926 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-18 10:46:12,143 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 216 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-18 10:46:12,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 31 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-18 10:46:12,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17112 states. [2024-11-18 10:46:12,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17112 to 14480. [2024-11-18 10:46:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14480 states, 14479 states have (on average 1.012915256578493) internal successors, (14666), 14479 states have internal predecessors, (14666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14480 states to 14480 states and 14666 transitions. [2024-11-18 10:46:12,245 INFO L78 Accepts]: Start accepts. Automaton has 14480 states and 14666 transitions. Word has length 1926 [2024-11-18 10:46:12,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 10:46:12,246 INFO L471 AbstractCegarLoop]: Abstraction has 14480 states and 14666 transitions. [2024-11-18 10:46:12,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 10:46:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states and 14666 transitions. [2024-11-18 10:46:12,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1993 [2024-11-18 10:46:12,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 10:46:12,267 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 10:46:12,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 10:46:12,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:46:12,469 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 10:46:12,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 10:46:12,470 INFO L85 PathProgramCache]: Analyzing trace with hash -684938062, now seen corresponding path program 1 times [2024-11-18 10:46:12,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 10:46:12,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863146993] [2024-11-18 10:46:12,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:12,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 10:46:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7791 backedges. 2107 proven. 4000 refuted. 0 times theorem prover too weak. 1684 trivial. 0 not checked. [2024-11-18 10:46:15,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 10:46:15,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863146993] [2024-11-18 10:46:15,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863146993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 10:46:15,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642207362] [2024-11-18 10:46:15,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 10:46:15,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 10:46:15,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 10:46:15,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 10:46:15,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 10:46:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 10:46:15,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 2288 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 10:46:15,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 10:46:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7791 backedges. 5146 proven. 67 refuted. 0 times theorem prover too weak. 2578 trivial. 0 not checked. [2024-11-18 10:46:22,241 INFO L311 TraceCheckSpWp]: Computing backward predicates...