./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Fibonacci02.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/Fibonacci02.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 b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:22:35,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:22:35,476 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:22:35,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:22:35,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:22:35,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:22:35,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:22:35,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:22:35,516 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:22:35,517 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:22:35,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:22:35,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:22:35,518 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:22:35,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:22:35,529 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:22:35,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:22:35,529 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:22:35,529 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:22:35,530 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:22:35,530 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:22:35,530 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:22:35,530 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:22:35,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:22:35,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:22:35,531 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:22:35,531 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:22:35,531 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:22:35,531 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:22:35,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:22:35,532 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:22:35,532 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:22:35,532 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:22:35,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:22:35,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:22:35,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:22:35,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:22:35,533 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:22:35,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:22:35,533 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:22:35,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:22:35,534 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:22:35,537 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:22:35,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 [2024-11-18 14:22:35,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:22:35,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:22:35,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:22:35,758 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:22:35,758 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:22:35,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci02.c [2024-11-18 14:22:37,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:22:37,236 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:22:37,236 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci02.c [2024-11-18 14:22:37,242 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0525b7aa2/f4e4811976b34bc8956693ed20ab3122/FLAG8b9809c7a [2024-11-18 14:22:37,656 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0525b7aa2/f4e4811976b34bc8956693ed20ab3122 [2024-11-18 14:22:37,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:22:37,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:22:37,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:22:37,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:22:37,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:22:37,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9c8727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37, skipping insertion in model container [2024-11-18 14:22:37,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:22:37,859 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/Fibonacci02.c[715,728] [2024-11-18 14:22:37,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:22:37,873 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:22:37,887 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/Fibonacci02.c[715,728] [2024-11-18 14:22:37,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:22:37,901 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:22:37,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37 WrapperNode [2024-11-18 14:22:37,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:22:37,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:22:37,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:22:37,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:22:37,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,926 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-18 14:22:37,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:22:37,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:22:37,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:22:37,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:22:37,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,937 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,950 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 14:22:37,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,955 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,956 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:22:37,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:22:37,960 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:22:37,960 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:22:37,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (1/1) ... [2024-11-18 14:22:37,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:22:37,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:37,992 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 14:22:37,994 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 14:22:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-18 14:22:38,041 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-18 14:22:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:22:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:22:38,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:22:38,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:22:38,097 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:22:38,099 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:22:38,200 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-18 14:22:38,201 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:22:38,214 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:22:38,215 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 14:22:38,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:22:38 BoogieIcfgContainer [2024-11-18 14:22:38,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:22:38,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:22:38,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:22:38,222 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:22:38,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:22:37" (1/3) ... [2024-11-18 14:22:38,223 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2889a4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:22:38, skipping insertion in model container [2024-11-18 14:22:38,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:22:37" (2/3) ... [2024-11-18 14:22:38,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2889a4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:22:38, skipping insertion in model container [2024-11-18 14:22:38,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:22:38" (3/3) ... [2024-11-18 14:22:38,225 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2024-11-18 14:22:38,242 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:22:38,242 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:22:38,298 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:22:38,305 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;@1f72a58f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:22:38,306 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:22:38,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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 14:22:38,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 14:22:38,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:38,317 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:38,317 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:38,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:38,323 INFO L85 PathProgramCache]: Analyzing trace with hash 117289724, now seen corresponding path program 1 times [2024-11-18 14:22:38,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:38,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008750711] [2024-11-18 14:22:38,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:38,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:38,544 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 14:22:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:38,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008750711] [2024-11-18 14:22:38,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008750711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:22:38,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:22:38,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:22:38,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553283787] [2024-11-18 14:22:38,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:22:38,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:22:38,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:22:38,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:22:38,582 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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, 4 states have (on average 2.0) internal successors, (8), 5 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 14:22:38,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:38,661 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2024-11-18 14:22:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:22:38,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 14:22:38,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:38,673 INFO L225 Difference]: With dead ends: 30 [2024-11-18 14:22:38,673 INFO L226 Difference]: Without dead ends: 20 [2024-11-18 14:22:38,676 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 14:22:38,680 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:38,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 48 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:38,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-18 14:22:38,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-18 14:22:38,719 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 14:22:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-18 14:22:38,722 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2024-11-18 14:22:38,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:38,723 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-18 14:22:38,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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 14:22:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-18 14:22:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 14:22:38,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:38,725 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:38,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:22:38,725 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:38,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:38,726 INFO L85 PathProgramCache]: Analyzing trace with hash 36927066, now seen corresponding path program 1 times [2024-11-18 14:22:38,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:38,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227300947] [2024-11-18 14:22:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:38,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:38,817 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 14:22:38,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:38,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227300947] [2024-11-18 14:22:38,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227300947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:22:38,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:22:38,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:22:38,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126179448] [2024-11-18 14:22:38,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:22:38,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:22:38,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:38,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:22:38,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:22:38,821 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 14:22:38,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:38,860 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2024-11-18 14:22:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:22:38,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 14:22:38,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:38,861 INFO L225 Difference]: With dead ends: 24 [2024-11-18 14:22:38,861 INFO L226 Difference]: Without dead ends: 20 [2024-11-18 14:22:38,862 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 14:22:38,863 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:38,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:22:38,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-18 14:22:38,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-18 14:22:38,868 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 14:22:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-18 14:22:38,869 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2024-11-18 14:22:38,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:38,871 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-18 14:22:38,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 14:22:38,871 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-18 14:22:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 14:22:38,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:38,873 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 14:22:38,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:22:38,874 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:38,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:38,877 INFO L85 PathProgramCache]: Analyzing trace with hash 703243533, now seen corresponding path program 1 times [2024-11-18 14:22:38,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:38,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085544756] [2024-11-18 14:22:38,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:38,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:38,972 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 14:22:38,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:38,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085544756] [2024-11-18 14:22:38,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085544756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:38,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997071093] [2024-11-18 14:22:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:38,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:38,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:38,978 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 14:22:38,980 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 14:22:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:39,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:22:39,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:39,138 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 14:22:39,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:39,332 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 14:22:39,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997071093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:39,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:39,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 11 [2024-11-18 14:22:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53948641] [2024-11-18 14:22:39,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:39,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 14:22:39,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:39,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 14:22:39,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:22:39,336 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 14:22:39,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:39,428 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-18 14:22:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:22:39,429 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 14:22:39,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:39,430 INFO L225 Difference]: With dead ends: 35 [2024-11-18 14:22:39,430 INFO L226 Difference]: Without dead ends: 20 [2024-11-18 14:22:39,430 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 14:22:39,432 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 14:22:39,433 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 14:22:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-18 14:22:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-18 14:22:39,438 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 14:22:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-18 14:22:39,439 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2024-11-18 14:22:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:39,439 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-18 14:22:39,439 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 14:22:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-18 14:22:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 14:22:39,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:39,442 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 14:22:39,456 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 14:22:39,642 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 14:22:39,643 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:39,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:39,644 INFO L85 PathProgramCache]: Analyzing trace with hash 187716987, now seen corresponding path program 1 times [2024-11-18 14:22:39,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:39,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635820439] [2024-11-18 14:22:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:39,746 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 14:22:39,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635820439] [2024-11-18 14:22:39,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635820439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:39,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730139064] [2024-11-18 14:22:39,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:22:39,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:39,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:39,749 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 14:22:39,750 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 14:22:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:39,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:22:39,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:39,828 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 14:22:39,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:39,986 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 14:22:39,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730139064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:39,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:39,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2024-11-18 14:22:39,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388389643] [2024-11-18 14:22:39,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:39,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 14:22:39,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:39,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 14:22:39,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:22:39,989 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 14:22:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:40,048 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2024-11-18 14:22:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:22:40,049 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 14:22:40,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:40,051 INFO L225 Difference]: With dead ends: 29 [2024-11-18 14:22:40,052 INFO L226 Difference]: Without dead ends: 25 [2024-11-18 14:22:40,053 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 14:22:40,053 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 14:22:40,054 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 14:22:40,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-18 14:22:40,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-18 14:22:40,058 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 14:22:40,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2024-11-18 14:22:40,059 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 24 [2024-11-18 14:22:40,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:40,059 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2024-11-18 14:22:40,059 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 14:22:40,060 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2024-11-18 14:22:40,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 14:22:40,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:40,062 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 14:22:40,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 14:22:40,266 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 14:22:40,267 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:40,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:40,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1151618030, now seen corresponding path program 2 times [2024-11-18 14:22:40,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:40,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27190524] [2024-11-18 14:22:40,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:22:40,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:40,286 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:22:40,286 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 14:22:40,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:40,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27190524] [2024-11-18 14:22:40,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27190524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:40,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079897466] [2024-11-18 14:22:40,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:22:40,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:40,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:40,432 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 14:22:40,433 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 14:22:40,477 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:22:40,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:40,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:22:40,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:40,576 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 14:22:40,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:40,915 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 14:22:40,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079897466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:40,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:40,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 18 [2024-11-18 14:22:40,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302872845] [2024-11-18 14:22:40,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:40,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:22:40,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:40,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:22:40,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:22:40,918 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-18 14:22:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:41,101 INFO L93 Difference]: Finished difference Result 60 states and 93 transitions. [2024-11-18 14:22:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:22:41,103 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) Word has length 37 [2024-11-18 14:22:41,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:41,104 INFO L225 Difference]: With dead ends: 60 [2024-11-18 14:22:41,104 INFO L226 Difference]: Without dead ends: 38 [2024-11-18 14:22:41,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=482, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:22:41,105 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 38 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:41,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 102 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-18 14:22:41,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-18 14:22:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-18 14:22:41,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-11-18 14:22:41,123 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 37 [2024-11-18 14:22:41,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:41,123 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-11-18 14:22:41,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.8125) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-18 14:22:41,123 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-11-18 14:22:41,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 14:22:41,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:41,125 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 14:22:41,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:22:41,325 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 14:22:41,325 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:41,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:41,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1673648870, now seen corresponding path program 3 times [2024-11-18 14:22:41,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:41,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310982104] [2024-11-18 14:22:41,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:22:41,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:41,340 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-18 14:22:41,343 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 67 proven. 22 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-18 14:22:41,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:41,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310982104] [2024-11-18 14:22:41,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310982104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054342337] [2024-11-18 14:22:41,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:22:41,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:41,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:41,450 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 14:22:41,452 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 14:22:41,501 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-18 14:22:41,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:41,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:22:41,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-18 14:22:41,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 68 proven. 30 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-18 14:22:41,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054342337] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:41,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:41,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 13 [2024-11-18 14:22:41,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984121010] [2024-11-18 14:22:41,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:41,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 14:22:41,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:41,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 14:22:41,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:22:41,814 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 13 states have internal predecessors, (38), 7 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-18 14:22:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:41,896 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2024-11-18 14:22:41,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:22:41,897 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 13 states have internal predecessors, (38), 7 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) Word has length 65 [2024-11-18 14:22:41,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:41,898 INFO L225 Difference]: With dead ends: 45 [2024-11-18 14:22:41,898 INFO L226 Difference]: Without dead ends: 41 [2024-11-18 14:22:41,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:22:41,898 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:41,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 56 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-18 14:22:41,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2024-11-18 14:22:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2024-11-18 14:22:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-11-18 14:22:41,910 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 65 [2024-11-18 14:22:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:41,910 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-11-18 14:22:41,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 13 states have internal predecessors, (38), 7 states have call successors, (10), 1 states have call predecessors, (10), 5 states have return successors, (12), 6 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-18 14:22:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-11-18 14:22:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 14:22:41,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:41,914 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:41,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:22:42,116 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 14:22:42,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:42,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:42,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1375066668, now seen corresponding path program 4 times [2024-11-18 14:22:42,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:42,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253644730] [2024-11-18 14:22:42,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:22:42,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:42,133 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:22:42,134 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 27 proven. 166 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-18 14:22:42,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253644730] [2024-11-18 14:22:42,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253644730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:42,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882886520] [2024-11-18 14:22:42,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:22:42,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:42,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:42,269 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 14:22:42,270 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 14:22:42,320 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:22:42,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:42,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:22:42,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 27 proven. 166 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-18 14:22:42,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 27 proven. 181 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-11-18 14:22:42,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882886520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:42,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:42,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 13 [2024-11-18 14:22:42,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888100771] [2024-11-18 14:22:42,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:42,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 14:22:42,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:42,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 14:22:42,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:22:42,823 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-18 14:22:42,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:42,899 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2024-11-18 14:22:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:22:42,900 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) Word has length 93 [2024-11-18 14:22:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:42,901 INFO L225 Difference]: With dead ends: 50 [2024-11-18 14:22:42,901 INFO L226 Difference]: Without dead ends: 46 [2024-11-18 14:22:42,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:22:42,902 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:42,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 63 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:22:42,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-18 14:22:42,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2024-11-18 14:22:42,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (18), 9 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-18 14:22:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2024-11-18 14:22:42,909 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 93 [2024-11-18 14:22:42,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:42,909 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2024-11-18 14:22:42,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-18 14:22:42,909 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2024-11-18 14:22:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-18 14:22:42,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:42,911 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 23, 13, 13, 13, 13, 13, 13, 13, 10, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:42,927 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 14:22:43,112 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 14:22:43,112 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:43,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:43,112 INFO L85 PathProgramCache]: Analyzing trace with hash -194806633, now seen corresponding path program 5 times [2024-11-18 14:22:43,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:43,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390986236] [2024-11-18 14:22:43,112 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:22:43,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:43,139 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-18 14:22:43,139 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1969 backedges. 251 proven. 279 refuted. 0 times theorem prover too weak. 1439 trivial. 0 not checked. [2024-11-18 14:22:43,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:43,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390986236] [2024-11-18 14:22:43,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390986236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:43,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916483966] [2024-11-18 14:22:43,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:22:43,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:43,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:43,230 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 14:22:43,232 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 14:22:43,288 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-18 14:22:43,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:43,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:22:43,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1969 backedges. 1139 proven. 17 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2024-11-18 14:22:43,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1969 backedges. 251 proven. 280 refuted. 0 times theorem prover too weak. 1438 trivial. 0 not checked. [2024-11-18 14:22:43,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916483966] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:43,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:43,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 11 [2024-11-18 14:22:43,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768646859] [2024-11-18 14:22:43,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:43,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 14:22:43,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:43,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 14:22:43,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:22:43,824 INFO L87 Difference]: Start difference. First operand 43 states and 57 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-18 14:22:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:43,904 INFO L93 Difference]: Finished difference Result 82 states and 120 transitions. [2024-11-18 14:22:43,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:22:43,905 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 189 [2024-11-18 14:22:43,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:43,906 INFO L225 Difference]: With dead ends: 82 [2024-11-18 14:22:43,906 INFO L226 Difference]: Without dead ends: 45 [2024-11-18 14:22:43,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 372 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:22:43,907 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:43,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 74 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:22:43,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-18 14:22:43,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-18 14:22:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.09375) internal successors, (35), 30 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (16), 9 states have call predecessors, (16), 6 states have call successors, (16) [2024-11-18 14:22:43,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-18 14:22:43,913 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 189 [2024-11-18 14:22:43,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:43,914 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-18 14:22:43,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-18 14:22:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-18 14:22:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-18 14:22:43,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:43,915 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:43,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-18 14:22:44,116 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 14:22:44,116 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:44,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:44,116 INFO L85 PathProgramCache]: Analyzing trace with hash 917554903, now seen corresponding path program 6 times [2024-11-18 14:22:44,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:44,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323585020] [2024-11-18 14:22:44,117 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:22:44,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:44,154 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 14:22:44,156 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 55 proven. 317 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-18 14:22:44,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323585020] [2024-11-18 14:22:44,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323585020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076575329] [2024-11-18 14:22:44,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:22:44,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:44,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:44,297 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 14:22:44,301 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 14:22:44,365 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 14:22:44,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:44,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:22:44,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 52 proven. 326 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2024-11-18 14:22:44,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 52 proven. 352 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2024-11-18 14:22:45,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076575329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:45,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:45,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-11-18 14:22:45,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27976515] [2024-11-18 14:22:45,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:45,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 14:22:45,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:45,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 14:22:45,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:22:45,129 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-18 14:22:45,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:45,219 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2024-11-18 14:22:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:22:45,220 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) Word has length 133 [2024-11-18 14:22:45,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:45,221 INFO L225 Difference]: With dead ends: 54 [2024-11-18 14:22:45,221 INFO L226 Difference]: Without dead ends: 50 [2024-11-18 14:22:45,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 258 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:22:45,222 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:45,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 69 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:45,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-18 14:22:45,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-18 14:22:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 33 states have internal predecessors, (38), 7 states have call successors, (7), 5 states have call predecessors, (7), 7 states have return successors, (24), 11 states have call predecessors, (24), 7 states have call successors, (24) [2024-11-18 14:22:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2024-11-18 14:22:45,228 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 133 [2024-11-18 14:22:45,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:45,228 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2024-11-18 14:22:45,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5) internal successors, (49), 16 states have internal predecessors, (49), 12 states have call successors, (14), 1 states have call predecessors, (14), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-18 14:22:45,228 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2024-11-18 14:22:45,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-18 14:22:45,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:45,231 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 29, 17, 17, 17, 17, 17, 17, 17, 12, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:45,247 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 14:22:45,434 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 14:22:45,435 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:45,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:45,435 INFO L85 PathProgramCache]: Analyzing trace with hash 697143409, now seen corresponding path program 7 times [2024-11-18 14:22:45,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:45,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761595347] [2024-11-18 14:22:45,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:22:45,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 153 proven. 807 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2024-11-18 14:22:45,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:45,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761595347] [2024-11-18 14:22:45,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761595347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:45,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175552449] [2024-11-18 14:22:45,680 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:22:45,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:45,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:45,682 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 14:22:45,683 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 14:22:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:22:45,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:22:45,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 153 proven. 807 refuted. 0 times theorem prover too weak. 2370 trivial. 0 not checked. [2024-11-18 14:22:45,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3330 backedges. 153 proven. 847 refuted. 0 times theorem prover too weak. 2330 trivial. 0 not checked. [2024-11-18 14:22:46,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175552449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:46,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:46,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 17 [2024-11-18 14:22:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376056686] [2024-11-18 14:22:46,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:46,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:22:47,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:47,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:22:47,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:22:47,002 INFO L87 Difference]: Start difference. First operand 50 states and 69 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 14:22:47,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:47,132 INFO L93 Difference]: Finished difference Result 59 states and 87 transitions. [2024-11-18 14:22:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:22:47,133 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 243 [2024-11-18 14:22:47,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:47,135 INFO L225 Difference]: With dead ends: 59 [2024-11-18 14:22:47,136 INFO L226 Difference]: Without dead ends: 55 [2024-11-18 14:22:47,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 478 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:22:47,137 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 66 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:47,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 81 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-18 14:22:47,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-18 14:22:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 36 states have internal predecessors, (41), 8 states have call successors, (8), 5 states have call predecessors, (8), 8 states have return successors, (34), 13 states have call predecessors, (34), 8 states have call successors, (34) [2024-11-18 14:22:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 83 transitions. [2024-11-18 14:22:47,143 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 83 transitions. Word has length 243 [2024-11-18 14:22:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:47,144 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 83 transitions. [2024-11-18 14:22:47,144 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 14:22:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 83 transitions. [2024-11-18 14:22:47,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-18 14:22:47,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:47,150 INFO L215 NwaCegarLoop]: trace histogram [53, 53, 42, 26, 26, 26, 26, 26, 26, 26, 16, 11, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:47,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 14:22:47,354 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 14:22:47,355 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:47,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1983887946, now seen corresponding path program 8 times [2024-11-18 14:22:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:47,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884807426] [2024-11-18 14:22:47,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:22:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:47,398 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:22:47,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:47,720 INFO L134 CoverageAnalysis]: Checked inductivity of 7673 backedges. 261 proven. 1517 refuted. 0 times theorem prover too weak. 5895 trivial. 0 not checked. [2024-11-18 14:22:47,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:47,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884807426] [2024-11-18 14:22:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884807426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:47,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155959885] [2024-11-18 14:22:47,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:22:47,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:47,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:47,727 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 14:22:47,729 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 14:22:47,873 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:22:47,873 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:47,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 14:22:47,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7673 backedges. 261 proven. 1517 refuted. 0 times theorem prover too weak. 5895 trivial. 0 not checked. [2024-11-18 14:22:47,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7673 backedges. 261 proven. 1574 refuted. 0 times theorem prover too weak. 5838 trivial. 0 not checked. [2024-11-18 14:22:49,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155959885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:49,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:49,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 19 [2024-11-18 14:22:49,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228788253] [2024-11-18 14:22:49,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:49,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:22:49,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:49,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:22:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:22:49,635 INFO L87 Difference]: Start difference. First operand 55 states and 83 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 14:22:49,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:49,790 INFO L93 Difference]: Finished difference Result 64 states and 103 transitions. [2024-11-18 14:22:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:22:49,790 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 364 [2024-11-18 14:22:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:49,793 INFO L225 Difference]: With dead ends: 64 [2024-11-18 14:22:49,793 INFO L226 Difference]: Without dead ends: 60 [2024-11-18 14:22:49,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 719 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 14:22:49,794 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 57 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:49,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 84 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:49,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-18 14:22:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-18 14:22:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 39 states have internal predecessors, (44), 9 states have call successors, (9), 5 states have call predecessors, (9), 9 states have return successors, (46), 15 states have call predecessors, (46), 9 states have call successors, (46) [2024-11-18 14:22:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 99 transitions. [2024-11-18 14:22:49,808 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 99 transitions. Word has length 364 [2024-11-18 14:22:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:49,809 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 99 transitions. [2024-11-18 14:22:49,809 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 14:22:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 99 transitions. [2024-11-18 14:22:49,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2024-11-18 14:22:49,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:49,817 INFO L215 NwaCegarLoop]: trace histogram [89, 89, 74, 44, 44, 44, 44, 44, 44, 44, 30, 15, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:49,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 14:22:50,017 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 14:22:50,018 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:50,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1681395590, now seen corresponding path program 9 times [2024-11-18 14:22:50,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:50,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315862647] [2024-11-18 14:22:50,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:22:50,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:50,055 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-18 14:22:50,055 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 22149 backedges. 2444 proven. 178 refuted. 0 times theorem prover too weak. 19527 trivial. 0 not checked. [2024-11-18 14:22:50,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:50,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315862647] [2024-11-18 14:22:50,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315862647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:50,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419486922] [2024-11-18 14:22:50,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:22:50,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:50,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:50,247 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 14:22:50,251 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 14:22:50,376 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-18 14:22:50,376 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:50,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:22:50,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 22149 backedges. 4652 proven. 66 refuted. 0 times theorem prover too weak. 17431 trivial. 0 not checked. [2024-11-18 14:22:50,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 22149 backedges. 2444 proven. 182 refuted. 0 times theorem prover too weak. 19523 trivial. 0 not checked. [2024-11-18 14:22:52,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419486922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:52,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:52,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 15 [2024-11-18 14:22:52,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213125097] [2024-11-18 14:22:52,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:52,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 14:22:52,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 14:22:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:22:52,010 INFO L87 Difference]: Start difference. First operand 60 states and 99 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-18 14:22:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:52,201 INFO L93 Difference]: Finished difference Result 128 states and 247 transitions. [2024-11-18 14:22:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 14:22:52,201 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) Word has length 612 [2024-11-18 14:22:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:52,203 INFO L225 Difference]: With dead ends: 128 [2024-11-18 14:22:52,203 INFO L226 Difference]: Without dead ends: 69 [2024-11-18 14:22:52,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1244 GetRequests, 1215 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=203, Invalid=447, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:22:52,204 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:52,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 86 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:52,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-18 14:22:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2024-11-18 14:22:52,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 46 states have (on average 1.108695652173913) internal successors, (51), 43 states have internal predecessors, (51), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (41), 15 states have call predecessors, (41), 10 states have call successors, (41) [2024-11-18 14:22:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 102 transitions. [2024-11-18 14:22:52,213 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 102 transitions. Word has length 612 [2024-11-18 14:22:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:52,213 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 102 transitions. [2024-11-18 14:22:52,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (20), 9 states have call predecessors, (20), 7 states have call successors, (20) [2024-11-18 14:22:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 102 transitions. [2024-11-18 14:22:52,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2024-11-18 14:22:52,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:52,217 INFO L215 NwaCegarLoop]: trace histogram [99, 99, 79, 49, 49, 49, 49, 49, 49, 49, 30, 20, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:52,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 14:22:52,421 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 14:22:52,422 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:52,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:52,422 INFO L85 PathProgramCache]: Analyzing trace with hash 343619797, now seen corresponding path program 10 times [2024-11-18 14:22:52,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:52,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477714543] [2024-11-18 14:22:52,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:22:52,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:52,482 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:22:52,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 27189 backedges. 532 proven. 3515 refuted. 0 times theorem prover too weak. 23142 trivial. 0 not checked. [2024-11-18 14:22:52,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477714543] [2024-11-18 14:22:52,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477714543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771168540] [2024-11-18 14:22:52,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:22:52,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:52,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:52,986 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 14:22:52,987 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 14:22:53,201 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:22:53,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:53,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 14:22:53,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 27189 backedges. 532 proven. 3515 refuted. 0 times theorem prover too weak. 23142 trivial. 0 not checked. [2024-11-18 14:22:53,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:22:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 27189 backedges. 532 proven. 3592 refuted. 0 times theorem prover too weak. 23065 trivial. 0 not checked. [2024-11-18 14:22:55,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771168540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:22:55,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:22:55,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 20 [2024-11-18 14:22:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832299797] [2024-11-18 14:22:55,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:22:55,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 14:22:55,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:22:55,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 14:22:55,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:22:55,776 INFO L87 Difference]: Start difference. First operand 66 states and 102 transitions. Second operand has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (24), 9 states have call predecessors, (24), 17 states have call successors, (24) [2024-11-18 14:22:55,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:22:55,922 INFO L93 Difference]: Finished difference Result 75 states and 123 transitions. [2024-11-18 14:22:55,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:22:55,923 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (24), 9 states have call predecessors, (24), 17 states have call successors, (24) Word has length 677 [2024-11-18 14:22:55,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:22:55,926 INFO L225 Difference]: With dead ends: 75 [2024-11-18 14:22:55,926 INFO L226 Difference]: Without dead ends: 71 [2024-11-18 14:22:55,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1344 SyntacticMatches, 9 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=235, Invalid=467, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:22:55,927 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 45 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:22:55,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 90 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:22:55,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-18 14:22:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-18 14:22:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 46 states have internal predecessors, (54), 11 states have call successors, (11), 7 states have call predecessors, (11), 10 states have return successors, (54), 17 states have call predecessors, (54), 11 states have call successors, (54) [2024-11-18 14:22:55,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 119 transitions. [2024-11-18 14:22:55,939 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 119 transitions. Word has length 677 [2024-11-18 14:22:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:22:55,940 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 119 transitions. [2024-11-18 14:22:55,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 17 states have call successors, (18), 1 states have call predecessors, (18), 9 states have return successors, (24), 9 states have call predecessors, (24), 17 states have call successors, (24) [2024-11-18 14:22:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 119 transitions. [2024-11-18 14:22:55,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2024-11-18 14:22:55,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:22:55,951 INFO L215 NwaCegarLoop]: trace histogram [143, 143, 116, 71, 71, 71, 71, 71, 71, 71, 45, 27, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:22:55,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 14:22:56,155 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 14:22:56,156 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:22:56,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:22:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1083827969, now seen corresponding path program 11 times [2024-11-18 14:22:56,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:22:56,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049722049] [2024-11-18 14:22:56,156 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:22:56,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:22:56,232 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2024-11-18 14:22:56,233 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 57222 backedges. 3970 proven. 4389 refuted. 0 times theorem prover too weak. 48863 trivial. 0 not checked. [2024-11-18 14:22:56,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:22:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049722049] [2024-11-18 14:22:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049722049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:22:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618959751] [2024-11-18 14:22:56,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:22:56,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:22:56,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:22:56,678 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 14:22:56,679 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 14:22:56,903 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 45 check-sat command(s) [2024-11-18 14:22:56,904 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:22:56,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 14:22:56,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:22:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 57222 backedges. 31555 proven. 843 refuted. 0 times theorem prover too weak. 24824 trivial. 0 not checked. [2024-11-18 14:22:57,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 57222 backedges. 4225 proven. 4765 refuted. 0 times theorem prover too weak. 48232 trivial. 0 not checked. [2024-11-18 14:23:00,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618959751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:00,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:00,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 31 [2024-11-18 14:23:00,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934874335] [2024-11-18 14:23:00,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:00,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 14:23:00,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:00,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 14:23:00,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2024-11-18 14:23:00,680 INFO L87 Difference]: Start difference. First operand 71 states and 119 transitions. Second operand has 31 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 31 states have internal predecessors, (97), 24 states have call successors, (29), 2 states have call predecessors, (29), 14 states have return successors, (39), 13 states have call predecessors, (39), 24 states have call successors, (39) [2024-11-18 14:23:01,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:01,113 INFO L93 Difference]: Finished difference Result 164 states and 350 transitions. [2024-11-18 14:23:01,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 14:23:01,115 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 31 states have internal predecessors, (97), 24 states have call successors, (29), 2 states have call predecessors, (29), 14 states have return successors, (39), 13 states have call predecessors, (39), 24 states have call successors, (39) Word has length 978 [2024-11-18 14:23:01,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:01,117 INFO L225 Difference]: With dead ends: 164 [2024-11-18 14:23:01,117 INFO L226 Difference]: Without dead ends: 99 [2024-11-18 14:23:01,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1999 GetRequests, 1938 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=663, Invalid=1989, Unknown=0, NotChecked=0, Total=2652 [2024-11-18 14:23:01,121 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 165 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:01,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 148 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:23:01,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-18 14:23:01,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 86. [2024-11-18 14:23:01,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 58 states have internal predecessors, (62), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (51), 17 states have call predecessors, (51), 15 states have call successors, (51) [2024-11-18 14:23:01,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 128 transitions. [2024-11-18 14:23:01,139 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 128 transitions. Word has length 978 [2024-11-18 14:23:01,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:01,140 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 128 transitions. [2024-11-18 14:23:01,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 3.3448275862068964) internal successors, (97), 31 states have internal predecessors, (97), 24 states have call successors, (29), 2 states have call predecessors, (29), 14 states have return successors, (39), 13 states have call predecessors, (39), 24 states have call successors, (39) [2024-11-18 14:23:01,140 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 128 transitions. [2024-11-18 14:23:01,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1006 [2024-11-18 14:23:01,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:01,152 INFO L215 NwaCegarLoop]: trace histogram [147, 147, 119, 73, 73, 73, 73, 73, 73, 73, 46, 28, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:01,166 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 14:23:01,352 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 14:23:01,353 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:01,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:01,353 INFO L85 PathProgramCache]: Analyzing trace with hash -57897577, now seen corresponding path program 12 times [2024-11-18 14:23:01,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:01,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964034355] [2024-11-18 14:23:01,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:01,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:01,416 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-11-18 14:23:01,416 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 60457 backedges. 1665 proven. 4812 refuted. 0 times theorem prover too weak. 53980 trivial. 0 not checked. [2024-11-18 14:23:01,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964034355] [2024-11-18 14:23:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964034355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417056333] [2024-11-18 14:23:01,703 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:23:01,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:01,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:01,705 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 14:23:01,706 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 14:23:01,923 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2024-11-18 14:23:01,924 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:01,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 14:23:01,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 60457 backedges. 1748 proven. 5212 refuted. 0 times theorem prover too weak. 53497 trivial. 0 not checked. [2024-11-18 14:23:02,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 60457 backedges. 1752 proven. 5300 refuted. 0 times theorem prover too weak. 53405 trivial. 0 not checked. [2024-11-18 14:23:05,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417056333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:05,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 21] total 27 [2024-11-18 14:23:05,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128888201] [2024-11-18 14:23:05,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:05,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 14:23:05,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 14:23:05,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:23:05,761 INFO L87 Difference]: Start difference. First operand 86 states and 128 transitions. Second operand has 27 states, 24 states have (on average 3.25) internal successors, (78), 27 states have internal predecessors, (78), 21 states have call successors, (24), 1 states have call predecessors, (24), 11 states have return successors, (31), 13 states have call predecessors, (31), 21 states have call successors, (31) [2024-11-18 14:23:05,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:05,964 INFO L93 Difference]: Finished difference Result 139 states and 299 transitions. [2024-11-18 14:23:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:23:05,964 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 3.25) internal successors, (78), 27 states have internal predecessors, (78), 21 states have call successors, (24), 1 states have call predecessors, (24), 11 states have return successors, (31), 13 states have call predecessors, (31), 21 states have call successors, (31) Word has length 1005 [2024-11-18 14:23:05,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:05,966 INFO L225 Difference]: With dead ends: 139 [2024-11-18 14:23:05,966 INFO L226 Difference]: Without dead ends: 95 [2024-11-18 14:23:05,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2038 GetRequests, 1995 SyntacticMatches, 10 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=400, Invalid=790, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 14:23:05,968 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 17 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:05,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 198 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:05,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-18 14:23:05,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2024-11-18 14:23:05,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 62 states have (on average 1.032258064516129) internal successors, (64), 60 states have internal predecessors, (64), 15 states have call successors, (15), 10 states have call predecessors, (15), 11 states have return successors, (38), 18 states have call predecessors, (38), 15 states have call successors, (38) [2024-11-18 14:23:05,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 117 transitions. [2024-11-18 14:23:05,983 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 117 transitions. Word has length 1005 [2024-11-18 14:23:05,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:05,984 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 117 transitions. [2024-11-18 14:23:05,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 3.25) internal successors, (78), 27 states have internal predecessors, (78), 21 states have call successors, (24), 1 states have call predecessors, (24), 11 states have return successors, (31), 13 states have call predecessors, (31), 21 states have call successors, (31) [2024-11-18 14:23:05,984 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 117 transitions. [2024-11-18 14:23:05,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2024-11-18 14:23:05,987 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:05,987 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:06,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 14:23:06,187 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 14:23:06,188 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:06,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:06,188 INFO L85 PathProgramCache]: Analyzing trace with hash 597528604, now seen corresponding path program 13 times [2024-11-18 14:23:06,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:06,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536179283] [2024-11-18 14:23:06,188 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:23:06,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2024-11-18 14:23:15,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:15,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536179283] [2024-11-18 14:23:15,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536179283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203398568] [2024-11-18 14:23:15,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:23:15,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:15,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:15,739 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 14:23:15,740 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 14:23:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:23:16,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 439 conjuncts are in the unsatisfiable core [2024-11-18 14:23:16,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:16,557 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2024-11-18 14:23:16,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 0 proven. 10899 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2024-11-18 14:23:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203398568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:19,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:19,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2024-11-18 14:23:19,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11507514] [2024-11-18 14:23:19,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:19,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-18 14:23:19,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:19,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-18 14:23:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 14:23:19,741 INFO L87 Difference]: Start difference. First operand 89 states and 117 transitions. Second operand has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 19 states have internal predecessors, (42), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (24), 24 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-18 14:23:20,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:20,077 INFO L93 Difference]: Finished difference Result 121 states and 167 transitions. [2024-11-18 14:23:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 14:23:20,078 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 19 states have internal predecessors, (42), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (24), 24 states have call predecessors, (24), 8 states have call successors, (24) Word has length 746 [2024-11-18 14:23:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:20,079 INFO L225 Difference]: With dead ends: 121 [2024-11-18 14:23:20,080 INFO L226 Difference]: Without dead ends: 114 [2024-11-18 14:23:20,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1711 GetRequests, 1677 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 14:23:20,081 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:20,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1159 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:23:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-18 14:23:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-11-18 14:23:20,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 70 states have internal predecessors, (74), 19 states have call successors, (19), 10 states have call predecessors, (19), 14 states have return successors, (59), 25 states have call predecessors, (59), 19 states have call successors, (59) [2024-11-18 14:23:20,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 152 transitions. [2024-11-18 14:23:20,090 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 152 transitions. Word has length 746 [2024-11-18 14:23:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:20,090 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 152 transitions. [2024-11-18 14:23:20,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 19 states have internal predecessors, (42), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (24), 24 states have call predecessors, (24), 8 states have call successors, (24) [2024-11-18 14:23:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 152 transitions. [2024-11-18 14:23:20,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 856 [2024-11-18 14:23:20,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:23:20,095 INFO L215 NwaCegarLoop]: trace histogram [125, 125, 101, 62, 62, 62, 62, 62, 62, 62, 39, 24, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:23:20,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 14:23:20,295 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 14:23:20,296 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:23:20,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:23:20,296 INFO L85 PathProgramCache]: Analyzing trace with hash -380781278, now seen corresponding path program 14 times [2024-11-18 14:23:20,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:23:20,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134866461] [2024-11-18 14:23:20,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:20,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:23:20,394 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:20,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 1014 proven. 5058 refuted. 0 times theorem prover too weak. 37542 trivial. 0 not checked. [2024-11-18 14:23:21,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:23:21,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134866461] [2024-11-18 14:23:21,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134866461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:23:21,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880866858] [2024-11-18 14:23:21,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:23:21,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:23:21,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:23:21,146 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 14:23:21,148 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 14:23:21,492 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:23:21,492 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:23:21,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-18 14:23:21,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:23:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 1022 proven. 5453 refuted. 0 times theorem prover too weak. 37139 trivial. 0 not checked. [2024-11-18 14:23:21,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:23:25,747 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 1022 proven. 5570 refuted. 0 times theorem prover too weak. 37022 trivial. 0 not checked. [2024-11-18 14:23:25,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880866858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:23:25,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:23:25,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 23] total 27 [2024-11-18 14:23:25,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956439234] [2024-11-18 14:23:25,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:23:25,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-18 14:23:25,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:23:25,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-18 14:23:25,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:23:25,750 INFO L87 Difference]: Start difference. First operand 106 states and 152 transitions. Second operand has 27 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 27 states have internal predecessors, (79), 22 states have call successors, (24), 1 states have call predecessors, (24), 11 states have return successors, (32), 12 states have call predecessors, (32), 22 states have call successors, (32) [2024-11-18 14:23:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:23:25,938 INFO L93 Difference]: Finished difference Result 154 states and 247 transitions. [2024-11-18 14:23:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 14:23:25,939 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 27 states have internal predecessors, (79), 22 states have call successors, (24), 1 states have call predecessors, (24), 11 states have return successors, (32), 12 states have call predecessors, (32), 22 states have call successors, (32) Word has length 855 [2024-11-18 14:23:25,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:23:25,940 INFO L225 Difference]: With dead ends: 154 [2024-11-18 14:23:25,940 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 14:23:25,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1740 GetRequests, 1695 SyntacticMatches, 11 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=429, Invalid=831, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 14:23:25,942 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 15 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:23:25,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 156 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:23:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 14:23:25,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 14:23:25,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:23:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 14:23:25,944 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 855 [2024-11-18 14:23:25,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:23:25,944 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 14:23:25,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.0384615384615383) internal successors, (79), 27 states have internal predecessors, (79), 22 states have call successors, (24), 1 states have call predecessors, (24), 11 states have return successors, (32), 12 states have call predecessors, (32), 22 states have call successors, (32) [2024-11-18 14:23:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 14:23:25,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 14:23:25,948 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 14:23:25,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-18 14:23:26,148 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 14:23:26,151 INFO L407 BasicCegarLoop]: Path program histogram: [14, 1, 1, 1] [2024-11-18 14:23:26,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 14:23:27,949 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 14:23:27,991 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-18 14:23:27,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:23:27 BoogieIcfgContainer [2024-11-18 14:23:27,994 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 14:23:27,995 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 14:23:27,995 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 14:23:27,995 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 14:23:27,996 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:22:38" (3/4) ... [2024-11-18 14:23:27,997 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 14:23:28,001 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2024-11-18 14:23:28,004 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-18 14:23:28,004 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 14:23:28,004 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 14:23:28,004 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 14:23:28,070 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 14:23:28,070 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 14:23:28,071 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 14:23:28,071 INFO L158 Benchmark]: Toolchain (without parser) took 50411.92ms. Allocated memory was 140.5MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 70.3MB in the beginning and 1.4GB in the end (delta: -1.3GB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2024-11-18 14:23:28,071 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 140.5MB. Free memory was 105.1MB in the beginning and 104.9MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 14:23:28,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.46ms. Allocated memory was 140.5MB in the beginning and 211.8MB in the end (delta: 71.3MB). Free memory was 70.0MB in the beginning and 178.3MB in the end (delta: -108.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2024-11-18 14:23:28,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.70ms. Allocated memory is still 211.8MB. Free memory was 178.3MB in the beginning and 177.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 14:23:28,072 INFO L158 Benchmark]: Boogie Preprocessor took 31.23ms. Allocated memory is still 211.8MB. Free memory was 177.1MB in the beginning and 175.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 14:23:28,072 INFO L158 Benchmark]: RCFGBuilder took 256.27ms. Allocated memory is still 211.8MB. Free memory was 175.2MB in the beginning and 164.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-18 14:23:28,072 INFO L158 Benchmark]: TraceAbstraction took 49777.12ms. Allocated memory was 211.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 164.5MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 890.3MB. Max. memory is 16.1GB. [2024-11-18 14:23:28,072 INFO L158 Benchmark]: Witness Printer took 75.75ms. Allocated memory is still 1.5GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 14:23:28,073 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 140.5MB. Free memory was 105.1MB in the beginning and 104.9MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.46ms. Allocated memory was 140.5MB in the beginning and 211.8MB in the end (delta: 71.3MB). Free memory was 70.0MB in the beginning and 178.3MB in the end (delta: -108.2MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.70ms. Allocated memory is still 211.8MB. Free memory was 178.3MB in the beginning and 177.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.23ms. Allocated memory is still 211.8MB. Free memory was 177.1MB in the beginning and 175.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 256.27ms. Allocated memory is still 211.8MB. Free memory was 175.2MB in the beginning and 164.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 49777.12ms. Allocated memory was 211.8MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 164.5MB in the beginning and 1.4GB in the end (delta: -1.2GB). Peak memory consumption was 890.3MB. Max. memory is 16.1GB. * Witness Printer took 75.75ms. Allocated memory is still 1.5GB. Free memory was 1.4GB in the beginning and 1.4GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 33]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.9s, OverallIterations: 17, TraceHistogramMax: 147, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.1s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 696 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 608 mSDsluCounter, 2533 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2180 mSDsCounter, 704 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2772 IncrementalHoareTripleChecker+Invalid, 3476 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 704 mSolverCounterUnsat, 353 mSDtfsCounter, 2772 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12583 GetRequests, 12149 SyntacticMatches, 82 SemanticMatches, 352 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2515 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=16, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 40 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 38.9s InterpolantComputationTime, 12109 NumberOfCodeBlocks, 7905 NumberOfCodeBlocksAsserted, 246 NumberOfCheckSat, 18106 ConstructedInterpolants, 0 QuantifiedInterpolants, 25254 SizeOfPredicates, 63 NumberOfNonLiveVariables, 8876 ConjunctsInSsa, 619 ConjunctsInUnsatCore, 47 InterpolantComputations, 2 PerfectInterpolantSequences, 680491/774960 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 16]: Procedure Contract for fibonacci Derived contract for procedure fibonacci. Ensures: ((\result == 0) || (0 < n)) RESULT: Ultimate proved your program to be correct! [2024-11-18 14:23:28,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE