./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_15-2.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/recursive-simple/fibo_15-2.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 79b24a1d7d86eb80482889a13c0517d1f5f9d33286d66b099b5dbfdfe805f8a9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:23:21,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:23:21,666 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:23:21,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:23:21,670 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:23:21,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:23:21,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:23:21,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:23:21,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:23:21,693 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:23:21,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:23:21,694 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:23:21,694 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:23:21,695 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:23:21,696 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:23:21,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:23:21,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:23:21,697 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:23:21,697 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:23:21,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:23:21,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:23:21,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:23:21,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:23:21,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:23:21,703 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:23:21,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:23:21,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:23:21,704 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:23:21,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:23:21,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:23:21,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:23:21,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:23:21,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:23:21,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:23:21,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:23:21,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:23:21,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:23:21,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:23:21,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:23:21,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:23:21,708 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:23:21,708 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:23:21,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b24a1d7d86eb80482889a13c0517d1f5f9d33286d66b099b5dbfdfe805f8a9 [2024-11-18 14:23:21,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:23:22,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:23:22,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:23:22,026 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:23:22,027 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:23:22,028 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_15-2.c [2024-11-18 14:23:23,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:23:23,707 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:23:23,708 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_15-2.c [2024-11-18 14:23:23,722 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf246338/2b0c57ee65054085909f8f1ec6e2285d/FLAG078076faa [2024-11-18 14:23:24,066 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf246338/2b0c57ee65054085909f8f1ec6e2285d [2024-11-18 14:23:24,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:23:24,069 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:23:24,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:23:24,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:23:24,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:23:24,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4281cf84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24, skipping insertion in model container [2024-11-18 14:23:24,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,098 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:23:24,280 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/recursive-simple/fibo_15-2.c[744,757] [2024-11-18 14:23:24,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:23:24,296 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:23:24,309 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/recursive-simple/fibo_15-2.c[744,757] [2024-11-18 14:23:24,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:23:24,328 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:23:24,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24 WrapperNode [2024-11-18 14:23:24,329 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:23:24,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:23:24,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:23:24,331 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:23:24,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,360 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-18 14:23:24,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:23:24,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:23:24,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:23:24,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:23:24,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,373 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,387 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 14:23:24,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,388 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:23:24,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:23:24,402 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:23:24,402 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:23:24,403 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (1/1) ... [2024-11-18 14:23:24,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:23:24,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:24,440 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 14:23:24,457 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 14:23:24,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:23:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:23:24,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:23:24,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:23:24,502 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-18 14:23:24,502 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-18 14:23:24,567 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:23:24,569 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:23:24,758 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-18 14:23:24,759 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:23:24,769 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:23:24,770 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 14:23:24,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:23:24 BoogieIcfgContainer [2024-11-18 14:23:24,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:23:24,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:23:24,772 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:23:24,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:23:24,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:23:24" (1/3) ... [2024-11-18 14:23:24,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0a420a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:23:24, skipping insertion in model container [2024-11-18 14:23:24,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:23:24" (2/3) ... [2024-11-18 14:23:24,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0a420a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:23:24, skipping insertion in model container [2024-11-18 14:23:24,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:23:24" (3/3) ... [2024-11-18 14:23:24,780 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_15-2.c [2024-11-18 14:23:24,795 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:23:24,796 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:23:24,867 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:23:24,875 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;@752ab5c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:23:24,876 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:23:24,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-18 14:23:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 14:23:24,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:24,890 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:24,894 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:24,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:24,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1755511548, now seen corresponding path program 1 times [2024-11-18 14:23:24,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:24,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361601828] [2024-11-18 14:23:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:23:24,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:25,166 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 14:23:25,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:25,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361601828] [2024-11-18 14:23:25,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361601828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:23:25,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:23:25,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:23:25,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624521572] [2024-11-18 14:23:25,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:23:25,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:23:25,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:23:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:23:25,190 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:23:25,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:25,232 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2024-11-18 14:23:25,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:23:25,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-18 14:23:25,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:25,241 INFO L225 Difference]: With dead ends: 30 [2024-11-18 14:23:25,241 INFO L226 Difference]: Without dead ends: 18 [2024-11-18 14:23:25,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:23:25,250 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:25,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:23:25,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-18 14:23:25,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-18 14:23:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 14:23:25,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-18 14:23:25,281 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-11-18 14:23:25,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:25,281 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-18 14:23:25,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:23:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-18 14:23:25,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 14:23:25,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:25,283 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:25,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:23:25,283 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:25,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:25,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2128459596, now seen corresponding path program 1 times [2024-11-18 14:23:25,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:25,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341364751] [2024-11-18 14:23:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:23:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:25,364 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 14:23:25,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:25,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341364751] [2024-11-18 14:23:25,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341364751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:23:25,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:23:25,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:23:25,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669012463] [2024-11-18 14:23:25,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:23:25,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:23:25,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:25,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:23:25,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:23:25,368 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:23:25,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:25,392 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2024-11-18 14:23:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:23:25,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-18 14:23:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:25,393 INFO L225 Difference]: With dead ends: 24 [2024-11-18 14:23:25,393 INFO L226 Difference]: Without dead ends: 20 [2024-11-18 14:23:25,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:23:25,395 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:25,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:23:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-18 14:23:25,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-18 14:23:25,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-18 14:23:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-18 14:23:25,403 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2024-11-18 14:23:25,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:25,403 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-18 14:23:25,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:23:25,403 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-18 14:23:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 14:23:25,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:25,405 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:25,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:23:25,405 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:25,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash -42544313, now seen corresponding path program 1 times [2024-11-18 14:23:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:25,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341994622] [2024-11-18 14:23:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:23:25,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:25,546 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:23:25,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:25,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341994622] [2024-11-18 14:23:25,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341994622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:25,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407444612] [2024-11-18 14:23:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:23:25,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:25,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:25,551 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 14:23:25,552 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 14:23:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:25,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:23:25,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:23:25,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:23:26,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407444612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:26,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:26,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 11 [2024-11-18 14:23:26,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495938233] [2024-11-18 14:23:26,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:26,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 14:23:26,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:26,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 14:23:26,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:23:26,028 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-18 14:23:26,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:26,127 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-18 14:23:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:23:26,128 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2024-11-18 14:23:26,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:26,130 INFO L225 Difference]: With dead ends: 35 [2024-11-18 14:23:26,130 INFO L226 Difference]: Without dead ends: 20 [2024-11-18 14:23:26,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:23:26,132 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:26,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 48 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:26,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-18 14:23:26,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-18 14:23:26,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-18 14:23:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-18 14:23:26,146 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2024-11-18 14:23:26,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:26,147 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-18 14:23:26,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.5) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-18 14:23:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-18 14:23:26,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 14:23:26,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:26,150 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:26,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 14:23:26,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:26,351 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:26,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 170813287, now seen corresponding path program 1 times [2024-11-18 14:23:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:26,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833683353] [2024-11-18 14:23:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:23:26,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:26,460 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:23:26,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:26,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833683353] [2024-11-18 14:23:26,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833683353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:26,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257556073] [2024-11-18 14:23:26,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:23:26,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:26,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:26,463 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 14:23:26,465 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 14:23:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:26,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:23:26,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:23:26,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:26,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:23:26,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257556073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:26,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:26,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2024-11-18 14:23:26,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967827760] [2024-11-18 14:23:26,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:26,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 14:23:26,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:26,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 14:23:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:23:26,705 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 14:23:26,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:26,766 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-18 14:23:26,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:23:26,766 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 24 [2024-11-18 14:23:26,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:26,768 INFO L225 Difference]: With dead ends: 29 [2024-11-18 14:23:26,768 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 14:23:26,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:23:26,769 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:26,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 37 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:23:26,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 14:23:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-18 14:23:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:23:26,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2024-11-18 14:23:26,778 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 24 [2024-11-18 14:23:26,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:26,778 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2024-11-18 14:23:26,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-18 14:23:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2024-11-18 14:23:26,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 14:23:26,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:26,783 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:26,799 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 14:23:26,983 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,SelfDestructingSolverStorable3 [2024-11-18 14:23:26,984 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:26,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:26,984 INFO L85 PathProgramCache]: Analyzing trace with hash -187634876, now seen corresponding path program 2 times [2024-11-18 14:23:26,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:26,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970948861] [2024-11-18 14:23:26,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:26,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:27,003 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:27,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:23:27,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970948861] [2024-11-18 14:23:27,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970948861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250998978] [2024-11-18 14:23:27,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:27,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:27,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:27,309 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 14:23:27,311 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 14:23:27,356 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:27,356 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:27,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:23:27,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 14:23:27,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-18 14:23:27,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250998978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:27,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:27,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 20 [2024-11-18 14:23:27,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237374971] [2024-11-18 14:23:27,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:27,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 14:23:27,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:27,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 14:23:27,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:23:27,853 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 20 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-18 14:23:28,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:28,161 INFO L93 Difference]: Finished difference Result 46 states and 83 transitions. [2024-11-18 14:23:28,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:23:28,162 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2024-11-18 14:23:28,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:28,164 INFO L225 Difference]: With dead ends: 46 [2024-11-18 14:23:28,164 INFO L226 Difference]: Without dead ends: 42 [2024-11-18 14:23:28,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2024-11-18 14:23:28,166 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:28,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 95 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:23:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-18 14:23:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2024-11-18 14:23:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-18 14:23:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 46 transitions. [2024-11-18 14:23:28,176 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 46 transitions. Word has length 37 [2024-11-18 14:23:28,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:28,177 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 46 transitions. [2024-11-18 14:23:28,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-18 14:23:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 46 transitions. [2024-11-18 14:23:28,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-18 14:23:28,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:28,180 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 8, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:28,194 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 14:23:28,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:28,381 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:28,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash 710953508, now seen corresponding path program 3 times [2024-11-18 14:23:28,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:28,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661963530] [2024-11-18 14:23:28,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:23:28,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:28,402 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 14:23:28,403 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 167 proven. 27 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-18 14:23:28,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:28,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661963530] [2024-11-18 14:23:28,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661963530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:28,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693416906] [2024-11-18 14:23:28,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:23:28,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:28,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:28,558 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 14:23:28,560 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 14:23:28,619 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 14:23:28,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:28,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:23:28,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 207 proven. 12 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-18 14:23:28,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 169 proven. 25 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2024-11-18 14:23:29,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693416906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:29,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:29,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 13 [2024-11-18 14:23:29,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457904200] [2024-11-18 14:23:29,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:29,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 14:23:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 14:23:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:23:29,132 INFO L87 Difference]: Start difference. First operand 30 states and 46 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-18 14:23:29,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:29,255 INFO L93 Difference]: Finished difference Result 62 states and 110 transitions. [2024-11-18 14:23:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:23:29,256 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) Word has length 90 [2024-11-18 14:23:29,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:29,258 INFO L225 Difference]: With dead ends: 62 [2024-11-18 14:23:29,261 INFO L226 Difference]: Without dead ends: 35 [2024-11-18 14:23:29,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 172 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:23:29,263 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 20 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:29,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 62 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:29,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-18 14:23:29,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2024-11-18 14:23:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2024-11-18 14:23:29,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2024-11-18 14:23:29,278 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 90 [2024-11-18 14:23:29,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:29,279 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2024-11-18 14:23:29,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-18 14:23:29,279 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2024-11-18 14:23:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 14:23:29,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:29,284 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:29,302 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 14:23:29,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:29,485 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:29,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:29,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2015531204, now seen corresponding path program 4 times [2024-11-18 14:23:29,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:29,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106060162] [2024-11-18 14:23:29,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:23:29,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:29,508 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:23:29,512 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 96 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-18 14:23:29,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:29,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106060162] [2024-11-18 14:23:29,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106060162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:29,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628737831] [2024-11-18 14:23:29,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:23:29,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:29,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:29,717 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 14:23:29,718 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 14:23:29,776 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:23:29,776 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:29,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:23:29,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-18 14:23:29,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 103 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-18 14:23:30,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628737831] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:30,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:30,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 17 [2024-11-18 14:23:30,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993417236] [2024-11-18 14:23:30,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:30,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:23:30,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:23:30,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:23:30,397 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 17 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-18 14:23:30,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:30,594 INFO L93 Difference]: Finished difference Result 81 states and 135 transitions. [2024-11-18 14:23:30,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:23:30,595 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 17 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) Word has length 65 [2024-11-18 14:23:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:30,597 INFO L225 Difference]: With dead ends: 81 [2024-11-18 14:23:30,597 INFO L226 Difference]: Without dead ends: 77 [2024-11-18 14:23:30,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 121 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:23:30,600 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 84 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:30,600 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 70 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-18 14:23:30,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2024-11-18 14:23:30,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (38), 16 states have call predecessors, (38), 12 states have call successors, (38) [2024-11-18 14:23:30,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 97 transitions. [2024-11-18 14:23:30,628 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 97 transitions. Word has length 65 [2024-11-18 14:23:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:30,629 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 97 transitions. [2024-11-18 14:23:30,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 17 states have internal predecessors, (47), 13 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-18 14:23:30,629 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 97 transitions. [2024-11-18 14:23:30,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-11-18 14:23:30,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:30,637 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 35, 21, 21, 21, 21, 21, 21, 21, 14, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:30,653 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 14:23:30,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:30,838 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:30,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:30,838 INFO L85 PathProgramCache]: Analyzing trace with hash 2001495241, now seen corresponding path program 5 times [2024-11-18 14:23:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:30,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319725214] [2024-11-18 14:23:30,839 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:23:30,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:30,874 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-18 14:23:30,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:31,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 480 proven. 604 refuted. 0 times theorem prover too weak. 3963 trivial. 0 not checked. [2024-11-18 14:23:31,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319725214] [2024-11-18 14:23:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319725214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846750034] [2024-11-18 14:23:31,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:23:31,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:31,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:31,115 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 14:23:31,116 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 14:23:31,207 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-18 14:23:31,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:31,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:23:31,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 2907 proven. 92 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2024-11-18 14:23:31,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5047 backedges. 539 proven. 765 refuted. 0 times theorem prover too weak. 3743 trivial. 0 not checked. [2024-11-18 14:23:32,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846750034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:32,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:32,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 12] total 20 [2024-11-18 14:23:32,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489038275] [2024-11-18 14:23:32,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:32,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 14:23:32,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 14:23:32,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:23:32,820 INFO L87 Difference]: Start difference. First operand 64 states and 97 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 13 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (25), 9 states have call predecessors, (25), 13 states have call successors, (25) [2024-11-18 14:23:32,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:32,998 INFO L93 Difference]: Finished difference Result 188 states and 375 transitions. [2024-11-18 14:23:32,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:23:32,999 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 13 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (25), 9 states have call predecessors, (25), 13 states have call successors, (25) Word has length 297 [2024-11-18 14:23:32,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:33,001 INFO L225 Difference]: With dead ends: 188 [2024-11-18 14:23:33,001 INFO L226 Difference]: Without dead ends: 129 [2024-11-18 14:23:33,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 582 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:23:33,008 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:33,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 119 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-18 14:23:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 111. [2024-11-18 14:23:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 74 states have (on average 1.054054054054054) internal successors, (78), 72 states have internal predecessors, (78), 22 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (84), 28 states have call predecessors, (84), 22 states have call successors, (84) [2024-11-18 14:23:33,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 184 transitions. [2024-11-18 14:23:33,048 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 184 transitions. Word has length 297 [2024-11-18 14:23:33,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:33,049 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 184 transitions. [2024-11-18 14:23:33,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 13 states have call successors, (19), 2 states have call predecessors, (19), 7 states have return successors, (25), 9 states have call predecessors, (25), 13 states have call successors, (25) [2024-11-18 14:23:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 184 transitions. [2024-11-18 14:23:33,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2024-11-18 14:23:33,061 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:33,061 INFO L215 NwaCegarLoop]: trace histogram [59, 59, 53, 29, 29, 29, 29, 29, 29, 29, 24, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:33,079 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 14:23:33,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:33,262 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:33,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:33,263 INFO L85 PathProgramCache]: Analyzing trace with hash 936308275, now seen corresponding path program 6 times [2024-11-18 14:23:33,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:33,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195072277] [2024-11-18 14:23:33,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:33,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:33,294 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-18 14:23:33,294 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9846 backedges. 518 proven. 875 refuted. 0 times theorem prover too weak. 8453 trivial. 0 not checked. [2024-11-18 14:23:33,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:33,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195072277] [2024-11-18 14:23:33,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195072277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:33,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976505096] [2024-11-18 14:23:33,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:33,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:33,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:33,434 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 14:23:33,436 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 14:23:33,543 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-18 14:23:33,544 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:33,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:23:33,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9846 backedges. 4009 proven. 16 refuted. 0 times theorem prover too weak. 5821 trivial. 0 not checked. [2024-11-18 14:23:33,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 9846 backedges. 516 proven. 877 refuted. 0 times theorem prover too weak. 8453 trivial. 0 not checked. [2024-11-18 14:23:34,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976505096] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:34,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:34,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2024-11-18 14:23:34,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764611067] [2024-11-18 14:23:34,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:34,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 14:23:34,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 14:23:34,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:23:34,631 INFO L87 Difference]: Start difference. First operand 111 states and 184 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 5 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-18 14:23:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:34,720 INFO L93 Difference]: Finished difference Result 208 states and 389 transitions. [2024-11-18 14:23:34,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:23:34,721 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 5 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) Word has length 411 [2024-11-18 14:23:34,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:34,723 INFO L225 Difference]: With dead ends: 208 [2024-11-18 14:23:34,723 INFO L226 Difference]: Without dead ends: 101 [2024-11-18 14:23:34,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 816 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:23:34,726 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:34,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 59 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:23:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-18 14:23:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-18 14:23:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 66 states have internal predecessors, (71), 20 states have call successors, (20), 10 states have call predecessors, (20), 12 states have return successors, (65), 24 states have call predecessors, (65), 20 states have call successors, (65) [2024-11-18 14:23:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 156 transitions. [2024-11-18 14:23:34,752 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 156 transitions. Word has length 411 [2024-11-18 14:23:34,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:34,754 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 156 transitions. [2024-11-18 14:23:34,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 5 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (13), 4 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-18 14:23:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 156 transitions. [2024-11-18 14:23:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-18 14:23:34,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:34,759 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 31, 19, 19, 19, 19, 19, 19, 19, 12, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:34,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 14:23:34,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:34,960 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:34,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:34,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1842983191, now seen corresponding path program 7 times [2024-11-18 14:23:34,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:34,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737191221] [2024-11-18 14:23:34,961 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:23:34,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4113 backedges. 142 proven. 942 refuted. 0 times theorem prover too weak. 3029 trivial. 0 not checked. [2024-11-18 14:23:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:35,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737191221] [2024-11-18 14:23:35,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737191221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:35,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720714688] [2024-11-18 14:23:35,332 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:23:35,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:35,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:35,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:35,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:23:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:35,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:23:35,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4113 backedges. 142 proven. 942 refuted. 0 times theorem prover too weak. 3029 trivial. 0 not checked. [2024-11-18 14:23:35,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4113 backedges. 142 proven. 982 refuted. 0 times theorem prover too weak. 2989 trivial. 0 not checked. [2024-11-18 14:23:36,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720714688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:36,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:36,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 17 [2024-11-18 14:23:36,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604192588] [2024-11-18 14:23:36,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:36,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:23:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:23:36,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:23:36,871 INFO L87 Difference]: Start difference. First operand 101 states and 156 transitions. Second operand has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-18 14:23:37,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:37,002 INFO L93 Difference]: Finished difference Result 149 states and 297 transitions. [2024-11-18 14:23:37,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:23:37,003 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) Word has length 269 [2024-11-18 14:23:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:37,007 INFO L225 Difference]: With dead ends: 149 [2024-11-18 14:23:37,008 INFO L226 Difference]: Without dead ends: 145 [2024-11-18 14:23:37,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 530 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:23:37,009 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:37,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 86 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-18 14:23:37,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 106. [2024-11-18 14:23:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 69 states have internal predecessors, (74), 21 states have call successors, (21), 10 states have call predecessors, (21), 13 states have return successors, (75), 26 states have call predecessors, (75), 21 states have call successors, (75) [2024-11-18 14:23:37,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 170 transitions. [2024-11-18 14:23:37,041 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 170 transitions. Word has length 269 [2024-11-18 14:23:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:37,042 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 170 transitions. [2024-11-18 14:23:37,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.466666666666667) internal successors, (52), 17 states have internal predecessors, (52), 14 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (19), 7 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-18 14:23:37,043 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 170 transitions. [2024-11-18 14:23:37,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-11-18 14:23:37,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:37,045 INFO L215 NwaCegarLoop]: trace histogram [59, 59, 47, 29, 29, 29, 29, 29, 29, 29, 18, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:37,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 14:23:37,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 14:23:37,248 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:37,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash -314665783, now seen corresponding path program 8 times [2024-11-18 14:23:37,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:37,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834230970] [2024-11-18 14:23:37,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:37,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:37,296 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:37,296 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9549 backedges. 297 proven. 1714 refuted. 0 times theorem prover too weak. 7538 trivial. 0 not checked. [2024-11-18 14:23:37,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:37,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834230970] [2024-11-18 14:23:37,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834230970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:37,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790283821] [2024-11-18 14:23:37,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:37,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:37,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:37,820 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:37,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:23:38,011 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:38,011 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:38,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 14:23:38,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9549 backedges. 297 proven. 1714 refuted. 0 times theorem prover too weak. 7538 trivial. 0 not checked. [2024-11-18 14:23:38,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9549 backedges. 297 proven. 1771 refuted. 0 times theorem prover too weak. 7481 trivial. 0 not checked. [2024-11-18 14:23:40,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790283821] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:40,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:40,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 19 [2024-11-18 14:23:40,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961400871] [2024-11-18 14:23:40,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:40,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:23:40,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:40,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:23:40,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:23:40,152 INFO L87 Difference]: Start difference. First operand 106 states and 170 transitions. Second operand has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-18 14:23:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:40,326 INFO L93 Difference]: Finished difference Result 161 states and 347 transitions. [2024-11-18 14:23:40,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:23:40,326 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) Word has length 405 [2024-11-18 14:23:40,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:40,330 INFO L225 Difference]: With dead ends: 161 [2024-11-18 14:23:40,330 INFO L226 Difference]: Without dead ends: 157 [2024-11-18 14:23:40,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 801 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:23:40,331 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:40,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 94 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:40,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-18 14:23:40,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 111. [2024-11-18 14:23:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 74 states have (on average 1.0405405405405406) internal successors, (77), 72 states have internal predecessors, (77), 22 states have call successors, (22), 10 states have call predecessors, (22), 14 states have return successors, (87), 28 states have call predecessors, (87), 22 states have call successors, (87) [2024-11-18 14:23:40,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 186 transitions. [2024-11-18 14:23:40,358 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 186 transitions. Word has length 405 [2024-11-18 14:23:40,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:40,360 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 186 transitions. [2024-11-18 14:23:40,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 19 states have internal predecessors, (58), 16 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-18 14:23:40,360 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 186 transitions. [2024-11-18 14:23:40,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2024-11-18 14:23:40,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:40,367 INFO L215 NwaCegarLoop]: trace histogram [107, 107, 83, 53, 53, 53, 53, 53, 53, 53, 30, 24, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:40,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:23:40,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:40,572 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:40,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:40,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1652776311, now seen corresponding path program 9 times [2024-11-18 14:23:40,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:40,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653747368] [2024-11-18 14:23:40,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:23:40,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:40,603 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 14:23:40,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 31599 backedges. 2753 proven. 36 refuted. 0 times theorem prover too weak. 28810 trivial. 0 not checked. [2024-11-18 14:23:40,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:40,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653747368] [2024-11-18 14:23:40,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653747368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:40,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052455370] [2024-11-18 14:23:40,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:23:40,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:40,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:40,723 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:40,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:23:40,874 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 14:23:40,874 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:40,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:23:40,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 31599 backedges. 3024 proven. 41 refuted. 0 times theorem prover too weak. 28534 trivial. 0 not checked. [2024-11-18 14:23:40,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 31599 backedges. 3024 proven. 44 refuted. 0 times theorem prover too weak. 28531 trivial. 0 not checked. [2024-11-18 14:23:42,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052455370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:42,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:42,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 16 [2024-11-18 14:23:42,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903909740] [2024-11-18 14:23:42,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:42,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 14:23:42,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 14:23:42,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:23:42,941 INFO L87 Difference]: Start difference. First operand 111 states and 186 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 9 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 6 states have call predecessors, (14), 9 states have call successors, (14) [2024-11-18 14:23:43,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:43,085 INFO L93 Difference]: Finished difference Result 216 states and 401 transitions. [2024-11-18 14:23:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:23:43,086 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 9 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 6 states have call predecessors, (14), 9 states have call successors, (14) Word has length 729 [2024-11-18 14:23:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:43,089 INFO L225 Difference]: With dead ends: 216 [2024-11-18 14:23:43,089 INFO L226 Difference]: Without dead ends: 110 [2024-11-18 14:23:43,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1476 GetRequests, 1450 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:23:43,091 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:43,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 74 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:43,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-18 14:23:43,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2024-11-18 14:23:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 68 states have internal predecessors, (74), 20 states have call successors, (20), 10 states have call predecessors, (20), 13 states have return successors, (68), 26 states have call predecessors, (68), 20 states have call successors, (68) [2024-11-18 14:23:43,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 162 transitions. [2024-11-18 14:23:43,120 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 162 transitions. Word has length 729 [2024-11-18 14:23:43,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:43,121 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 162 transitions. [2024-11-18 14:23:43,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 9 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (14), 6 states have call predecessors, (14), 9 states have call successors, (14) [2024-11-18 14:23:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 162 transitions. [2024-11-18 14:23:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2024-11-18 14:23:43,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:43,128 INFO L215 NwaCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:43,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 14:23:43,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 14:23:43,329 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:43,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1322798379, now seen corresponding path program 10 times [2024-11-18 14:23:43,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:43,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240903457] [2024-11-18 14:23:43,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:23:43,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:43,420 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:23:43,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 1078 proven. 3575 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2024-11-18 14:23:44,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:44,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240903457] [2024-11-18 14:23:44,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240903457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:44,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51704115] [2024-11-18 14:23:44,086 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:23:44,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:44,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:44,088 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:44,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:23:44,314 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:23:44,315 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:44,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 14:23:44,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 10394 proven. 1601 refuted. 0 times theorem prover too weak. 7108 trivial. 0 not checked. [2024-11-18 14:23:44,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 1245 proven. 4107 refuted. 0 times theorem prover too weak. 13751 trivial. 0 not checked. [2024-11-18 14:23:48,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51704115] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:48,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:48,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 27] total 32 [2024-11-18 14:23:48,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59533161] [2024-11-18 14:23:48,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:48,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-18 14:23:48,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:48,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-18 14:23:48,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2024-11-18 14:23:48,447 INFO L87 Difference]: Start difference. First operand 105 states and 162 transitions. Second operand has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 26 states have call successors, (32), 2 states have call predecessors, (32), 14 states have return successors, (43), 15 states have call predecessors, (43), 26 states have call successors, (43) [2024-11-18 14:23:49,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:49,001 INFO L93 Difference]: Finished difference Result 212 states and 399 transitions. [2024-11-18 14:23:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-18 14:23:49,002 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 26 states have call successors, (32), 2 states have call predecessors, (32), 14 states have return successors, (43), 15 states have call predecessors, (43), 26 states have call successors, (43) Word has length 569 [2024-11-18 14:23:49,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:49,004 INFO L225 Difference]: With dead ends: 212 [2024-11-18 14:23:49,005 INFO L226 Difference]: Without dead ends: 112 [2024-11-18 14:23:49,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1187 GetRequests, 1118 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=824, Invalid=2482, Unknown=0, NotChecked=0, Total=3306 [2024-11-18 14:23:49,008 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 185 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:49,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 181 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:23:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-18 14:23:49,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 95. [2024-11-18 14:23:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 65 states have internal predecessors, (71), 17 states have call successors, (17), 14 states have call predecessors, (17), 9 states have return successors, (43), 15 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-18 14:23:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 131 transitions. [2024-11-18 14:23:49,017 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 131 transitions. Word has length 569 [2024-11-18 14:23:49,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:49,018 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 131 transitions. [2024-11-18 14:23:49,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.21875) internal successors, (103), 32 states have internal predecessors, (103), 26 states have call successors, (32), 2 states have call predecessors, (32), 14 states have return successors, (43), 15 states have call predecessors, (43), 26 states have call successors, (43) [2024-11-18 14:23:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 131 transitions. [2024-11-18 14:23:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2024-11-18 14:23:49,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:49,021 INFO L215 NwaCegarLoop]: trace histogram [83, 83, 67, 41, 41, 41, 41, 41, 41, 41, 26, 16, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:49,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-18 14:23:49,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 14:23:49,222 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:49,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1550468663, now seen corresponding path program 11 times [2024-11-18 14:23:49,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:49,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642570792] [2024-11-18 14:23:49,223 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:23:49,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:49,380 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2024-11-18 14:23:49,380 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 2669 proven. 2765 refuted. 0 times theorem prover too weak. 13669 trivial. 0 not checked. [2024-11-18 14:23:50,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642570792] [2024-11-18 14:23:50,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642570792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624658747] [2024-11-18 14:23:50,253 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:23:50,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:50,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:50,255 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:50,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:23:50,637 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 74 check-sat command(s) [2024-11-18 14:23:50,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:50,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 1175 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-18 14:23:50,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 2649 proven. 2769 refuted. 0 times theorem prover too weak. 13685 trivial. 0 not checked. [2024-11-18 14:23:50,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 19103 backedges. 2657 proven. 2852 refuted. 0 times theorem prover too weak. 13594 trivial. 0 not checked. [2024-11-18 14:23:54,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624658747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:54,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:54,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 29] total 33 [2024-11-18 14:23:54,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260955730] [2024-11-18 14:23:54,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:54,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 14:23:54,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:54,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 14:23:54,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 14:23:54,454 INFO L87 Difference]: Start difference. First operand 95 states and 131 transitions. Second operand has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 27 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (41), 17 states have call predecessors, (41), 27 states have call successors, (41) [2024-11-18 14:23:55,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:55,116 INFO L93 Difference]: Finished difference Result 245 states and 403 transitions. [2024-11-18 14:23:55,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-18 14:23:55,117 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 27 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (41), 17 states have call predecessors, (41), 27 states have call successors, (41) Word has length 569 [2024-11-18 14:23:55,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:55,119 INFO L225 Difference]: With dead ends: 245 [2024-11-18 14:23:55,119 INFO L226 Difference]: Without dead ends: 138 [2024-11-18 14:23:55,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1204 GetRequests, 1121 SyntacticMatches, 14 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1210, Invalid=3760, Unknown=0, NotChecked=0, Total=4970 [2024-11-18 14:23:55,122 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 184 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:55,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 214 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:23:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-18 14:23:55,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 109. [2024-11-18 14:23:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 78 states have (on average 1.0384615384615385) internal successors, (81), 75 states have internal predecessors, (81), 21 states have call successors, (21), 17 states have call predecessors, (21), 9 states have return successors, (51), 16 states have call predecessors, (51), 21 states have call successors, (51) [2024-11-18 14:23:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2024-11-18 14:23:55,134 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 569 [2024-11-18 14:23:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:55,134 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2024-11-18 14:23:55,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.121212121212121) internal successors, (103), 33 states have internal predecessors, (103), 27 states have call successors, (31), 1 states have call predecessors, (31), 15 states have return successors, (41), 17 states have call predecessors, (41), 27 states have call successors, (41) [2024-11-18 14:23:55,135 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2024-11-18 14:23:55,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-18 14:23:55,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:55,138 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 21, 13, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:55,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-18 14:23:55,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 14:23:55,339 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:55,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash 883862327, now seen corresponding path program 12 times [2024-11-18 14:23:55,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:55,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866243811] [2024-11-18 14:23:55,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:55,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:55,381 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-18 14:23:55,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 525 proven. 1830 refuted. 0 times theorem prover too weak. 10032 trivial. 0 not checked. [2024-11-18 14:23:55,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:55,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866243811] [2024-11-18 14:23:55,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866243811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:55,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113621595] [2024-11-18 14:23:55,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:55,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:55,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:55,865 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:23:55,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:23:56,132 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-18 14:23:56,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:56,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 14:23:56,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 508 proven. 1816 refuted. 0 times theorem prover too weak. 10063 trivial. 0 not checked. [2024-11-18 14:23:56,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 512 proven. 1869 refuted. 0 times theorem prover too weak. 10006 trivial. 0 not checked. [2024-11-18 14:23:58,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113621595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:58,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:58,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 17] total 27 [2024-11-18 14:23:58,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213853934] [2024-11-18 14:23:58,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:58,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 14:23:58,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:58,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 14:23:58,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:23:58,176 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 27 states, 23 states have (on average 3.0) internal successors, (69), 27 states have internal predecessors, (69), 19 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 19 states have call successors, (27) [2024-11-18 14:23:58,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:58,656 INFO L93 Difference]: Finished difference Result 136 states and 188 transitions. [2024-11-18 14:23:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-18 14:23:58,656 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 3.0) internal successors, (69), 27 states have internal predecessors, (69), 19 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 19 states have call successors, (27) Word has length 460 [2024-11-18 14:23:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:58,658 INFO L225 Difference]: With dead ends: 136 [2024-11-18 14:23:58,659 INFO L226 Difference]: Without dead ends: 132 [2024-11-18 14:23:58,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 908 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=645, Invalid=1517, Unknown=0, NotChecked=0, Total=2162 [2024-11-18 14:23:58,660 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 93 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:58,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 112 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:23:58,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-18 14:23:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 112. [2024-11-18 14:23:58,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 80 states have (on average 1.0375) internal successors, (83), 77 states have internal predecessors, (83), 21 states have call successors, (21), 17 states have call predecessors, (21), 10 states have return successors, (56), 17 states have call predecessors, (56), 21 states have call successors, (56) [2024-11-18 14:23:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 160 transitions. [2024-11-18 14:23:58,670 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 160 transitions. Word has length 460 [2024-11-18 14:23:58,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:58,671 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 160 transitions. [2024-11-18 14:23:58,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 3.0) internal successors, (69), 27 states have internal predecessors, (69), 19 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (27), 13 states have call predecessors, (27), 19 states have call successors, (27) [2024-11-18 14:23:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 160 transitions. [2024-11-18 14:23:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2024-11-18 14:23:58,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:58,678 INFO L215 NwaCegarLoop]: trace histogram [151, 151, 122, 75, 75, 75, 75, 75, 75, 75, 47, 29, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:58,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-18 14:23:58,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 14:23:58,880 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:58,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:58,880 INFO L85 PathProgramCache]: Analyzing trace with hash 734454185, now seen corresponding path program 13 times [2024-11-18 14:23:58,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:58,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142942436] [2024-11-18 14:23:58,881 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:23:58,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:00,188 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 764 proven. 6387 refuted. 0 times theorem prover too weak. 56630 trivial. 0 not checked. [2024-11-18 14:24:00,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:00,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142942436] [2024-11-18 14:24:00,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142942436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:00,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071111149] [2024-11-18 14:24:00,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:24:00,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:00,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:00,191 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:00,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:24:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:24:00,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 2311 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 14:24:00,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 764 proven. 6387 refuted. 0 times theorem prover too weak. 56630 trivial. 0 not checked. [2024-11-18 14:24:00,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 63781 backedges. 764 proven. 6487 refuted. 0 times theorem prover too weak. 56530 trivial. 0 not checked. [2024-11-18 14:24:05,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071111149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:05,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:05,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 21] total 23 [2024-11-18 14:24:05,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047603105] [2024-11-18 14:24:05,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:05,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-18 14:24:05,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:05,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-18 14:24:05,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:24:05,298 INFO L87 Difference]: Start difference. First operand 112 states and 160 transitions. Second operand has 23 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 23 states have internal predecessors, (70), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-18 14:24:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:05,428 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2024-11-18 14:24:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:24:05,429 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 23 states have internal predecessors, (70), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) Word has length 1032 [2024-11-18 14:24:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:05,431 INFO L225 Difference]: With dead ends: 121 [2024-11-18 14:24:05,431 INFO L226 Difference]: Without dead ends: 117 [2024-11-18 14:24:05,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2091 GetRequests, 2053 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=294, Invalid=636, Unknown=0, NotChecked=0, Total=930 [2024-11-18 14:24:05,432 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:05,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 108 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:24:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-18 14:24:05,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-18 14:24:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 83 states have (on average 1.036144578313253) internal successors, (86), 80 states have internal predecessors, (86), 22 states have call successors, (22), 17 states have call predecessors, (22), 11 states have return successors, (67), 19 states have call predecessors, (67), 22 states have call successors, (67) [2024-11-18 14:24:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 175 transitions. [2024-11-18 14:24:05,443 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 175 transitions. Word has length 1032 [2024-11-18 14:24:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:05,444 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 175 transitions. [2024-11-18 14:24:05,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 23 states have internal predecessors, (70), 20 states have call successors, (21), 1 states have call predecessors, (21), 10 states have return successors, (28), 10 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-18 14:24:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 175 transitions. [2024-11-18 14:24:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2041 [2024-11-18 14:24:05,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:05,467 INFO L215 NwaCegarLoop]: trace histogram [299, 299, 242, 149, 149, 149, 149, 149, 149, 149, 93, 57, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:05,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-18 14:24:05,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:05,668 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:05,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:05,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1993218709, now seen corresponding path program 14 times [2024-11-18 14:24:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:05,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717688399] [2024-11-18 14:24:05,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:24:05,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:06,150 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:24:06,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 251469 backedges. 1728 proven. 14500 refuted. 0 times theorem prover too weak. 235241 trivial. 0 not checked. [2024-11-18 14:24:08,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:08,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717688399] [2024-11-18 14:24:08,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717688399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:08,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594602724] [2024-11-18 14:24:08,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:24:08,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:08,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:08,863 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:08,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:24:09,558 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:24:09,558 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:09,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 4549 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 14:24:09,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 251469 backedges. 1728 proven. 14500 refuted. 0 times theorem prover too weak. 235241 trivial. 0 not checked. [2024-11-18 14:24:09,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 251469 backedges. 1728 proven. 14626 refuted. 0 times theorem prover too weak. 235115 trivial. 0 not checked. [2024-11-18 14:24:18,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594602724] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:18,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:18,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 25 [2024-11-18 14:24:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653362565] [2024-11-18 14:24:18,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:18,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-18 14:24:18,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:18,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-18 14:24:18,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2024-11-18 14:24:18,085 INFO L87 Difference]: Start difference. First operand 117 states and 175 transitions. Second operand has 25 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 25 states have internal predecessors, (76), 22 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (31), 11 states have call predecessors, (31), 22 states have call successors, (31) [2024-11-18 14:24:18,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:18,261 INFO L93 Difference]: Finished difference Result 126 states and 196 transitions. [2024-11-18 14:24:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-18 14:24:18,261 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 25 states have internal predecessors, (76), 22 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (31), 11 states have call predecessors, (31), 22 states have call successors, (31) Word has length 2040 [2024-11-18 14:24:18,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:18,264 INFO L225 Difference]: With dead ends: 126 [2024-11-18 14:24:18,264 INFO L226 Difference]: Without dead ends: 122 [2024-11-18 14:24:18,265 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4110 GetRequests, 4068 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=766, Unknown=0, NotChecked=0, Total=1122 [2024-11-18 14:24:18,266 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 108 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:18,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 111 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:24:18,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-18 14:24:18,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-18 14:24:18,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 83 states have internal predecessors, (89), 23 states have call successors, (23), 17 states have call predecessors, (23), 12 states have return successors, (80), 21 states have call predecessors, (80), 23 states have call successors, (80) [2024-11-18 14:24:18,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 192 transitions. [2024-11-18 14:24:18,279 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 192 transitions. Word has length 2040 [2024-11-18 14:24:18,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:18,280 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 192 transitions. [2024-11-18 14:24:18,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 25 states have internal predecessors, (76), 22 states have call successors, (23), 1 states have call predecessors, (23), 11 states have return successors, (31), 11 states have call predecessors, (31), 22 states have call successors, (31) [2024-11-18 14:24:18,280 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 192 transitions. [2024-11-18 14:24:18,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3103 [2024-11-18 14:24:18,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:18,319 INFO L215 NwaCegarLoop]: trace histogram [455, 455, 368, 227, 227, 227, 227, 227, 227, 227, 141, 87, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:18,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-18 14:24:18,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 14:24:18,519 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:18,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:18,520 INFO L85 PathProgramCache]: Analyzing trace with hash -162135151, now seen corresponding path program 15 times [2024-11-18 14:24:18,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:18,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755913737] [2024-11-18 14:24:18,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:24:18,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:18,611 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2024-11-18 14:24:18,611 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 583272 backedges. 3015 proven. 24489 refuted. 0 times theorem prover too weak. 555768 trivial. 0 not checked. [2024-11-18 14:24:19,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:24:19,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755913737] [2024-11-18 14:24:19,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755913737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:24:19,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827325808] [2024-11-18 14:24:19,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:24:19,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:24:19,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:24:19,101 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:24:19,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:24:19,620 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2024-11-18 14:24:19,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:24:19,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 14:24:19,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:24:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 583272 backedges. 3015 proven. 24489 refuted. 0 times theorem prover too weak. 555768 trivial. 0 not checked. [2024-11-18 14:24:19,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:24:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 583272 backedges. 3015 proven. 24644 refuted. 0 times theorem prover too weak. 555613 trivial. 0 not checked. [2024-11-18 14:24:32,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827325808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:24:32,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:24:32,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 25] total 27 [2024-11-18 14:24:32,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398202978] [2024-11-18 14:24:32,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:24:32,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 14:24:32,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:24:32,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 14:24:32,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:24:32,127 INFO L87 Difference]: Start difference. First operand 122 states and 192 transitions. Second operand has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2024-11-18 14:24:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:24:32,354 INFO L93 Difference]: Finished difference Result 131 states and 215 transitions. [2024-11-18 14:24:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:24:32,355 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) Word has length 3102 [2024-11-18 14:24:32,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:24:32,359 INFO L225 Difference]: With dead ends: 131 [2024-11-18 14:24:32,359 INFO L226 Difference]: Without dead ends: 127 [2024-11-18 14:24:32,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6237 GetRequests, 6191 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=424, Invalid=908, Unknown=0, NotChecked=0, Total=1332 [2024-11-18 14:24:32,360 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 63 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:24:32,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 121 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:24:32,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-18 14:24:32,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-11-18 14:24:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 86 states have internal predecessors, (92), 24 states have call successors, (24), 17 states have call predecessors, (24), 13 states have return successors, (95), 23 states have call predecessors, (95), 24 states have call successors, (95) [2024-11-18 14:24:32,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 211 transitions. [2024-11-18 14:24:32,372 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 211 transitions. Word has length 3102 [2024-11-18 14:24:32,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:24:32,374 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 211 transitions. [2024-11-18 14:24:32,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.28) internal successors, (82), 27 states have internal predecessors, (82), 24 states have call successors, (25), 1 states have call predecessors, (25), 12 states have return successors, (34), 12 states have call predecessors, (34), 24 states have call successors, (34) [2024-11-18 14:24:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 211 transitions. [2024-11-18 14:24:32,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4928 [2024-11-18 14:24:32,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:24:32,478 INFO L215 NwaCegarLoop]: trace histogram [723, 723, 585, 361, 361, 361, 361, 361, 361, 361, 224, 138, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:24:32,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-18 14:24:32,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 14:24:32,679 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:24:32,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:24:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash -672970389, now seen corresponding path program 16 times [2024-11-18 14:24:32,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:24:32,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622392575] [2024-11-18 14:24:32,680 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:24:32,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:24:33,825 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:24:33,825 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat