./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:10:05,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:10:05,665 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:10:05,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:10:05,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:10:05,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:10:05,694 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:10:05,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:10:05,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:10:05,699 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:10:05,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:10:05,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:10:05,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:10:05,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:10:05,700 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:10:05,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:10:05,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:10:05,702 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:10:05,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:10:05,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:10:05,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:10:05,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:10:05,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:10:05,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:10:05,704 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:10:05,704 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:10:05,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:10:05,704 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:10:05,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:10:05,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:10:05,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:10:05,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:10:05,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:10:05,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:10:05,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:10:05,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:10:05,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:10:05,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:10:05,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:10:05,706 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:10:05,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:10:05,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:10:05,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2024-11-22 02:10:05,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:10:05,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:10:05,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:10:05,968 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:10:05,969 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:10:05,970 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2024-11-22 02:10:07,253 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:10:07,404 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:10:07,404 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2024-11-22 02:10:07,414 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7393a8f46/f5620fe00ba341059fa90ddf880180b8/FLAGae47bab48 [2024-11-22 02:10:07,809 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7393a8f46/f5620fe00ba341059fa90ddf880180b8 [2024-11-22 02:10:07,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:10:07,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:10:07,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:10:07,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:10:07,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:10:07,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:10:07" (1/1) ... [2024-11-22 02:10:07,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a680e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:07, skipping insertion in model container [2024-11-22 02:10:07,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:10:07" (1/1) ... [2024-11-22 02:10:07,839 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:10:07,990 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2024-11-22 02:10:07,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:10:08,008 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:10:08,021 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2024-11-22 02:10:08,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:10:08,035 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:10:08,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08 WrapperNode [2024-11-22 02:10:08,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:10:08,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:10:08,037 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:10:08,037 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:10:08,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,061 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-22 02:10:08,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:10:08,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:10:08,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:10:08,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:10:08,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,072 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,085 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]. [2024-11-22 02:10:08,085 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,086 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,091 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:10:08,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:10:08,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:10:08,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:10:08,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (1/1) ... [2024-11-22 02:10:08,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:10:08,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:08,133 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) [2024-11-22 02:10:08,138 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 [2024-11-22 02:10:08,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:10:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:10:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-22 02:10:08,172 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-22 02:10:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-22 02:10:08,172 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-22 02:10:08,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:10:08,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:10:08,216 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:10:08,219 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:10:08,308 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-22 02:10:08,308 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:10:08,321 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:10:08,322 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:10:08,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:10:08 BoogieIcfgContainer [2024-11-22 02:10:08,322 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:10:08,325 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:10:08,325 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:10:08,328 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:10:08,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:10:07" (1/3) ... [2024-11-22 02:10:08,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67036f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:10:08, skipping insertion in model container [2024-11-22 02:10:08,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:10:08" (2/3) ... [2024-11-22 02:10:08,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67036f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:10:08, skipping insertion in model container [2024-11-22 02:10:08,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:10:08" (3/3) ... [2024-11-22 02:10:08,331 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2024-11-22 02:10:08,349 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:10:08,350 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:10:08,400 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:10:08,405 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;@2a898f2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:10:08,406 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:10:08,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 02:10:08,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-22 02:10:08,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:08,415 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:08,415 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:08,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2024-11-22 02:10:08,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:08,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498802403] [2024-11-22 02:10:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:08,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:10:08,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:08,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498802403] [2024-11-22 02:10:08,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498802403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:10:08,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:10:08,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:10:08,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84185747] [2024-11-22 02:10:08,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:10:08,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:10:08,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:08,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:10:08,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:10:08,734 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:08,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:08,792 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2024-11-22 02:10:08,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:10:08,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-22 02:10:08,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:08,801 INFO L225 Difference]: With dead ends: 39 [2024-11-22 02:10:08,801 INFO L226 Difference]: Without dead ends: 27 [2024-11-22 02:10:08,805 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 [2024-11-22 02:10:08,809 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:08,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:10:08,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-22 02:10:08,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-22 02:10:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 02:10:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:10:08,874 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2024-11-22 02:10:08,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:08,886 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:10:08,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:10:08,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 02:10:08,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:08,889 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:08,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:10:08,889 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:08,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:08,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2024-11-22 02:10:08,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:08,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505585395] [2024-11-22 02:10:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:08,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:10:08,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:08,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505585395] [2024-11-22 02:10:08,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505585395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:10:08,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:10:08,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:10:08,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595484086] [2024-11-22 02:10:08,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:10:08,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:10:08,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:08,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:10:08,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:10:08,976 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:08,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:08,998 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-22 02:10:09,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:10:09,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-22 02:10:09,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:09,001 INFO L225 Difference]: With dead ends: 33 [2024-11-22 02:10:09,001 INFO L226 Difference]: Without dead ends: 29 [2024-11-22 02:10:09,001 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 [2024-11-22 02:10:09,002 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:09,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:10:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-22 02:10:09,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-22 02:10:09,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 02:10:09,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-22 02:10:09,009 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2024-11-22 02:10:09,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:09,009 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-22 02:10:09,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:10:09,010 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-22 02:10:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 02:10:09,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:09,011 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:09,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:10:09,011 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:09,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:09,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2024-11-22 02:10:09,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:09,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551461898] [2024-11-22 02:10:09,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:09,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:09,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:09,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551461898] [2024-11-22 02:10:09,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551461898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:09,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010634062] [2024-11-22 02:10:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:09,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:09,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:09,150 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) [2024-11-22 02:10:09,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:10:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:09,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:10:09,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:09,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:09,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010634062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:09,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:09,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-22 02:10:09,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702897568] [2024-11-22 02:10:09,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:09,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:10:09,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:09,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:10:09,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:10:09,482 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 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) [2024-11-22 02:10:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:09,598 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2024-11-22 02:10:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:10:09,598 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 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 [2024-11-22 02:10:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:09,599 INFO L225 Difference]: With dead ends: 55 [2024-11-22 02:10:09,599 INFO L226 Difference]: Without dead ends: 31 [2024-11-22 02:10:09,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:10:09,601 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 22 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:09,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 105 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:09,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-22 02:10:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-22 02:10:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-22 02:10:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-22 02:10:09,606 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2024-11-22 02:10:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:09,607 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-22 02:10:09,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 12 states have internal predecessors, (30), 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) [2024-11-22 02:10:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-22 02:10:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 02:10:09,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:09,608 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:09,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 02:10:09,812 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 [2024-11-22 02:10:09,829 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:09,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2024-11-22 02:10:09,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:09,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612311418] [2024-11-22 02:10:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:09,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:09,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612311418] [2024-11-22 02:10:09,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612311418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239454124] [2024-11-22 02:10:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:09,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:09,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:09,942 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) [2024-11-22 02:10:09,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:10:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:09,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:10:09,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:10,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:10,011 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 02:10:10,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239454124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:10,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:10,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-22 02:10:10,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182624259] [2024-11-22 02:10:10,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:10,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 02:10:10,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:10,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 02:10:10,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-22 02:10:10,223 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 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) [2024-11-22 02:10:10,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:10,365 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-22 02:10:10,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:10:10,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 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 [2024-11-22 02:10:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:10,368 INFO L225 Difference]: With dead ends: 40 [2024-11-22 02:10:10,368 INFO L226 Difference]: Without dead ends: 36 [2024-11-22 02:10:10,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-22 02:10:10,369 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:10,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 135 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-22 02:10:10,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-22 02:10:10,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2024-11-22 02:10:10,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-22 02:10:10,381 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2024-11-22 02:10:10,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:10,381 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-22 02:10:10,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.125) internal successors, (25), 10 states have internal predecessors, (25), 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) [2024-11-22 02:10:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-22 02:10:10,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-22 02:10:10,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:10,383 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:10,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:10,587 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 [2024-11-22 02:10:10,588 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:10,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:10,589 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2024-11-22 02:10:10,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:10,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309087373] [2024-11-22 02:10:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:10,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:10,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:10:10,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:10,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309087373] [2024-11-22 02:10:10,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309087373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:10,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833694252] [2024-11-22 02:10:10,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:10,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:10,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:10,690 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) [2024-11-22 02:10:10,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:10:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:10,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:10:10,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 02:10:10,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:10:11,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833694252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:11,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:11,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2024-11-22 02:10:11,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565359073] [2024-11-22 02:10:11,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:11,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 02:10:11,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:11,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 02:10:11,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:10:11,086 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:10:11,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:11,222 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2024-11-22 02:10:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:10:11,223 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2024-11-22 02:10:11,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:11,224 INFO L225 Difference]: With dead ends: 69 [2024-11-22 02:10:11,224 INFO L226 Difference]: Without dead ends: 38 [2024-11-22 02:10:11,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:10:11,225 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:11,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 146 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-22 02:10:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-22 02:10:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-22 02:10:11,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-22 02:10:11,232 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2024-11-22 02:10:11,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:11,232 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-22 02:10:11,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.090909090909091) internal successors, (45), 14 states have internal predecessors, (45), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:10:11,232 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-22 02:10:11,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-22 02:10:11,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:11,234 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:11,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:11,437 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 [2024-11-22 02:10:11,438 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:11,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:11,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2024-11-22 02:10:11,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:11,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743741273] [2024-11-22 02:10:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:11,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 02:10:11,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:11,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743741273] [2024-11-22 02:10:11,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743741273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:11,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671848682] [2024-11-22 02:10:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:11,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:11,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:11,548 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) [2024-11-22 02:10:11,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:10:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:11,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:10:11,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 02:10:11,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:10:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671848682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:11,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:11,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2024-11-22 02:10:11,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804734810] [2024-11-22 02:10:11,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:11,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:10:11,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:11,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:10:11,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:10:11,941 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:10:12,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:12,289 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2024-11-22 02:10:12,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:10:12,289 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2024-11-22 02:10:12,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:12,296 INFO L225 Difference]: With dead ends: 101 [2024-11-22 02:10:12,296 INFO L226 Difference]: Without dead ends: 68 [2024-11-22 02:10:12,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:10:12,298 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 39 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:12,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 300 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:10:12,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-22 02:10:12,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-22 02:10:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (34), 13 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-22 02:10:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2024-11-22 02:10:12,311 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2024-11-22 02:10:12,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:12,311 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2024-11-22 02:10:12,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-22 02:10:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2024-11-22 02:10:12,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-22 02:10:12,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:12,315 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:12,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 02:10:12,515 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 [2024-11-22 02:10:12,516 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:12,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:12,516 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2024-11-22 02:10:12,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:12,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323350518] [2024-11-22 02:10:12,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:12,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-22 02:10:12,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323350518] [2024-11-22 02:10:12,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323350518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452533215] [2024-11-22 02:10:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:12,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:12,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:12,615 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) [2024-11-22 02:10:12,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:10:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:12,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:10:12,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-22 02:10:12,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 02:10:13,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452533215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:13,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:13,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2024-11-22 02:10:13,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229935083] [2024-11-22 02:10:13,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:13,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:10:13,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:10:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:10:13,145 INFO L87 Difference]: Start difference. First operand 56 states and 86 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:10:13,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:13,306 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2024-11-22 02:10:13,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:10:13,307 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) Word has length 51 [2024-11-22 02:10:13,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:13,310 INFO L225 Difference]: With dead ends: 102 [2024-11-22 02:10:13,310 INFO L226 Difference]: Without dead ends: 98 [2024-11-22 02:10:13,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:10:13,312 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:13,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 161 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:13,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-22 02:10:13,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2024-11-22 02:10:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 40 states have (on average 1.15) internal successors, (46), 44 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 11 states have return successors, (48), 16 states have call predecessors, (48), 12 states have call successors, (48) [2024-11-22 02:10:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2024-11-22 02:10:13,326 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2024-11-22 02:10:13,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:13,327 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2024-11-22 02:10:13,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 17 states have internal predecessors, (55), 12 states have call successors, (14), 1 states have call predecessors, (14), 8 states have return successors, (18), 8 states have call predecessors, (18), 12 states have call successors, (18) [2024-11-22 02:10:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2024-11-22 02:10:13,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-22 02:10:13,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:13,335 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:13,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 02:10:13,536 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 [2024-11-22 02:10:13,537 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:13,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:13,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1770426885, now seen corresponding path program 1 times [2024-11-22 02:10:13,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:13,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362003674] [2024-11-22 02:10:13,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:13,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 81 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-22 02:10:13,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:13,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362003674] [2024-11-22 02:10:13,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362003674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:13,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223820060] [2024-11-22 02:10:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:13,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:13,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:13,702 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) [2024-11-22 02:10:13,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:10:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:13,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:10:13,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 119 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-22 02:10:13,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 17 proven. 129 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-22 02:10:14,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223820060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:14,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:14,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2024-11-22 02:10:14,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867719497] [2024-11-22 02:10:14,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:14,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:10:14,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:14,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:10:14,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:14,609 INFO L87 Difference]: Start difference. First operand 64 states and 106 transitions. Second operand has 23 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 23 states have internal predecessors, (75), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-22 02:10:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:15,112 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2024-11-22 02:10:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 02:10:15,113 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 23 states have internal predecessors, (75), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) Word has length 107 [2024-11-22 02:10:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:15,115 INFO L225 Difference]: With dead ends: 177 [2024-11-22 02:10:15,115 INFO L226 Difference]: Without dead ends: 104 [2024-11-22 02:10:15,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 197 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:10:15,116 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 78 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:15,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 352 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:10:15,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-22 02:10:15,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2024-11-22 02:10:15,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 16 states have call successors, (16), 8 states have call predecessors, (16), 14 states have return successors, (43), 20 states have call predecessors, (43), 16 states have call successors, (43) [2024-11-22 02:10:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2024-11-22 02:10:15,133 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 107 [2024-11-22 02:10:15,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:15,136 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2024-11-22 02:10:15,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 23 states have internal predecessors, (75), 18 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 10 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-22 02:10:15,137 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2024-11-22 02:10:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-22 02:10:15,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:15,141 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:15,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 02:10:15,342 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 [2024-11-22 02:10:15,342 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:15,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:15,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1566869308, now seen corresponding path program 1 times [2024-11-22 02:10:15,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:15,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895577945] [2024-11-22 02:10:15,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:15,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 42 proven. 158 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-22 02:10:15,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:15,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895577945] [2024-11-22 02:10:15,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895577945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:15,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065088383] [2024-11-22 02:10:15,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:10:15,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:15,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:15,522 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) [2024-11-22 02:10:15,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:10:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:15,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:15,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 29 proven. 212 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2024-11-22 02:10:15,690 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 29 proven. 228 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2024-11-22 02:10:16,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065088383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:16,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:16,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 23 [2024-11-22 02:10:16,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339714982] [2024-11-22 02:10:16,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:16,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:10:16,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:10:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:16,665 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 23 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 23 states have internal predecessors, (77), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:10:16,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:16,905 INFO L93 Difference]: Finished difference Result 132 states and 227 transitions. [2024-11-22 02:10:16,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 02:10:16,906 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 23 states have internal predecessors, (77), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) Word has length 146 [2024-11-22 02:10:16,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:16,908 INFO L225 Difference]: With dead ends: 132 [2024-11-22 02:10:16,908 INFO L226 Difference]: Without dead ends: 128 [2024-11-22 02:10:16,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 276 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2024-11-22 02:10:16,909 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 47 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:16,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 209 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:10:16,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-22 02:10:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 118. [2024-11-22 02:10:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 79 states have internal predecessors, (88), 21 states have call successors, (21), 8 states have call predecessors, (21), 19 states have return successors, (85), 30 states have call predecessors, (85), 21 states have call successors, (85) [2024-11-22 02:10:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 194 transitions. [2024-11-22 02:10:16,932 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 194 transitions. Word has length 146 [2024-11-22 02:10:16,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:16,932 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 194 transitions. [2024-11-22 02:10:16,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 23 states have internal predecessors, (77), 18 states have call successors, (22), 1 states have call predecessors, (22), 12 states have return successors, (30), 12 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:10:16,932 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 194 transitions. [2024-11-22 02:10:16,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-22 02:10:16,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:16,935 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 18, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:16,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 02:10:17,139 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 [2024-11-22 02:10:17,140 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:17,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:17,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1279109938, now seen corresponding path program 2 times [2024-11-22 02:10:17,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:17,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403938878] [2024-11-22 02:10:17,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:17,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:17,170 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:17,170 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 158 proven. 490 refuted. 0 times theorem prover too weak. 1585 trivial. 0 not checked. [2024-11-22 02:10:17,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:17,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403938878] [2024-11-22 02:10:17,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403938878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:17,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068544427] [2024-11-22 02:10:17,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:17,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:17,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:17,443 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) [2024-11-22 02:10:17,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:10:17,545 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:17,545 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:17,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:10:17,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 569 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2024-11-22 02:10:17,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 87 proven. 593 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-11-22 02:10:19,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068544427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:19,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:19,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 17] total 28 [2024-11-22 02:10:19,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523352098] [2024-11-22 02:10:19,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:19,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:10:19,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:19,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:10:19,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:10:19,247 INFO L87 Difference]: Start difference. First operand 118 states and 194 transitions. Second operand has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) [2024-11-22 02:10:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:19,952 INFO L93 Difference]: Finished difference Result 323 states and 666 transitions. [2024-11-22 02:10:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-22 02:10:19,953 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) Word has length 284 [2024-11-22 02:10:19,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:19,956 INFO L225 Difference]: With dead ends: 323 [2024-11-22 02:10:19,956 INFO L226 Difference]: Without dead ends: 214 [2024-11-22 02:10:19,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 547 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=446, Invalid=2310, Unknown=0, NotChecked=0, Total=2756 [2024-11-22 02:10:19,958 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 110 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:19,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 558 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 02:10:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-22 02:10:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 184. [2024-11-22 02:10:19,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 123 states have internal predecessors, (146), 35 states have call successors, (35), 17 states have call predecessors, (35), 25 states have return successors, (120), 43 states have call predecessors, (120), 35 states have call successors, (120) [2024-11-22 02:10:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 301 transitions. [2024-11-22 02:10:19,974 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 301 transitions. Word has length 284 [2024-11-22 02:10:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:19,975 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 301 transitions. [2024-11-22 02:10:19,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 28 states have internal predecessors, (94), 23 states have call successors, (29), 1 states have call predecessors, (29), 12 states have return successors, (36), 13 states have call predecessors, (36), 23 states have call successors, (36) [2024-11-22 02:10:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 301 transitions. [2024-11-22 02:10:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-22 02:10:19,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:19,980 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 23, 23, 21, 19, 14, 14, 14, 14, 14, 14, 14, 11, 11, 11, 11, 11, 11, 11, 10, 7, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:19,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 02:10:20,180 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 [2024-11-22 02:10:20,181 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:20,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:20,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1208797511, now seen corresponding path program 3 times [2024-11-22 02:10:20,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:20,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897452577] [2024-11-22 02:10:20,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:20,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:20,206 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:10:20,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3489 backedges. 668 proven. 191 refuted. 0 times theorem prover too weak. 2630 trivial. 0 not checked. [2024-11-22 02:10:20,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:20,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897452577] [2024-11-22 02:10:20,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897452577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:20,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498339896] [2024-11-22 02:10:20,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:20,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:20,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:20,472 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) [2024-11-22 02:10:20,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:10:20,577 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:10:20,577 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:20,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 02:10:20,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3489 backedges. 1698 proven. 37 refuted. 0 times theorem prover too weak. 1754 trivial. 0 not checked. [2024-11-22 02:10:20,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:21,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3489 backedges. 668 proven. 191 refuted. 0 times theorem prover too weak. 2630 trivial. 0 not checked. [2024-11-22 02:10:21,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498339896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:21,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:21,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 25 [2024-11-22 02:10:21,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419008469] [2024-11-22 02:10:21,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:21,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 02:10:21,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 02:10:21,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:10:21,971 INFO L87 Difference]: Start difference. First operand 184 states and 301 transitions. Second operand has 25 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 25 states have internal predecessors, (90), 16 states have call successors, (28), 2 states have call predecessors, (28), 8 states have return successors, (32), 10 states have call predecessors, (32), 16 states have call successors, (32) [2024-11-22 02:10:22,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:22,337 INFO L93 Difference]: Finished difference Result 395 states and 698 transitions. [2024-11-22 02:10:22,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 02:10:22,341 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 25 states have internal predecessors, (90), 16 states have call successors, (28), 2 states have call predecessors, (28), 8 states have return successors, (32), 10 states have call predecessors, (32), 16 states have call successors, (32) Word has length 350 [2024-11-22 02:10:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:22,344 INFO L225 Difference]: With dead ends: 395 [2024-11-22 02:10:22,344 INFO L226 Difference]: Without dead ends: 218 [2024-11-22 02:10:22,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 685 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 02:10:22,347 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 40 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:22,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 372 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:10:22,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-22 02:10:22,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 209. [2024-11-22 02:10:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 143 states have (on average 1.1608391608391608) internal successors, (166), 139 states have internal predecessors, (166), 37 states have call successors, (37), 21 states have call predecessors, (37), 28 states have return successors, (140), 48 states have call predecessors, (140), 37 states have call successors, (140) [2024-11-22 02:10:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 343 transitions. [2024-11-22 02:10:22,369 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 343 transitions. Word has length 350 [2024-11-22 02:10:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:22,370 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 343 transitions. [2024-11-22 02:10:22,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.9130434782608696) internal successors, (90), 25 states have internal predecessors, (90), 16 states have call successors, (28), 2 states have call predecessors, (28), 8 states have return successors, (32), 10 states have call predecessors, (32), 16 states have call successors, (32) [2024-11-22 02:10:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 343 transitions. [2024-11-22 02:10:22,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-11-22 02:10:22,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:22,374 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 24, 23, 23, 21, 15, 15, 15, 15, 15, 15, 15, 13, 11, 11, 11, 11, 11, 11, 11, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:22,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 02:10:22,574 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 [2024-11-22 02:10:22,575 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:22,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:22,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1655723700, now seen corresponding path program 4 times [2024-11-22 02:10:22,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:22,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487001066] [2024-11-22 02:10:22,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:22,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:22,612 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:22,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3878 backedges. 146 proven. 718 refuted. 0 times theorem prover too weak. 3014 trivial. 0 not checked. [2024-11-22 02:10:22,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:22,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487001066] [2024-11-22 02:10:22,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487001066] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:22,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039463594] [2024-11-22 02:10:22,873 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:22,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:22,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:22,876 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) [2024-11-22 02:10:22,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:10:23,009 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:23,009 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:23,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:10:23,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3878 backedges. 146 proven. 718 refuted. 0 times theorem prover too weak. 3014 trivial. 0 not checked. [2024-11-22 02:10:23,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3878 backedges. 146 proven. 739 refuted. 0 times theorem prover too weak. 2993 trivial. 0 not checked. [2024-11-22 02:10:24,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039463594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:24,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:24,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 19 [2024-11-22 02:10:24,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253219530] [2024-11-22 02:10:24,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:24,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 02:10:24,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 02:10:24,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-22 02:10:24,836 INFO L87 Difference]: Start difference. First operand 209 states and 343 transitions. Second operand has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 15 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 10 states have call predecessors, (24), 15 states have call successors, (24) [2024-11-22 02:10:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:25,015 INFO L93 Difference]: Finished difference Result 284 states and 535 transitions. [2024-11-22 02:10:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 02:10:25,021 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 15 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 10 states have call predecessors, (24), 15 states have call successors, (24) Word has length 367 [2024-11-22 02:10:25,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:25,024 INFO L225 Difference]: With dead ends: 284 [2024-11-22 02:10:25,026 INFO L226 Difference]: Without dead ends: 280 [2024-11-22 02:10:25,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 724 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:10:25,028 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 59 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:25,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 186 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:25,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-22 02:10:25,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 219. [2024-11-22 02:10:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 149 states have (on average 1.1543624161073827) internal successors, (172), 145 states have internal predecessors, (172), 39 states have call successors, (39), 21 states have call predecessors, (39), 30 states have return successors, (162), 52 states have call predecessors, (162), 39 states have call successors, (162) [2024-11-22 02:10:25,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 373 transitions. [2024-11-22 02:10:25,051 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 373 transitions. Word has length 367 [2024-11-22 02:10:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:25,052 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 373 transitions. [2024-11-22 02:10:25,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 19 states have internal predecessors, (68), 15 states have call successors, (20), 1 states have call predecessors, (20), 8 states have return successors, (24), 10 states have call predecessors, (24), 15 states have call successors, (24) [2024-11-22 02:10:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 373 transitions. [2024-11-22 02:10:25,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2024-11-22 02:10:25,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:25,057 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 25, 25, 23, 21, 14, 14, 14, 14, 14, 14, 14, 12, 12, 12, 12, 12, 12, 12, 11, 7, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:25,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:25,257 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 [2024-11-22 02:10:25,258 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:25,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:25,258 INFO L85 PathProgramCache]: Analyzing trace with hash -294723902, now seen corresponding path program 5 times [2024-11-22 02:10:25,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:25,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680122894] [2024-11-22 02:10:25,258 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:25,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:25,269 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 02:10:25,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3803 backedges. 197 proven. 563 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2024-11-22 02:10:25,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:25,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680122894] [2024-11-22 02:10:25,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680122894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:25,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685816143] [2024-11-22 02:10:25,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:25,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:25,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:25,345 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) [2024-11-22 02:10:25,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 02:10:25,451 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 02:10:25,451 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:25,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 02:10:25,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3803 backedges. 1109 proven. 13 refuted. 0 times theorem prover too weak. 2681 trivial. 0 not checked. [2024-11-22 02:10:25,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3803 backedges. 197 proven. 563 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2024-11-22 02:10:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685816143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:26,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:26,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 17 [2024-11-22 02:10:26,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978434329] [2024-11-22 02:10:26,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:26,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:10:26,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:10:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:10:26,484 INFO L87 Difference]: Start difference. First operand 219 states and 373 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 8 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-22 02:10:26,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:26,612 INFO L93 Difference]: Finished difference Result 402 states and 750 transitions. [2024-11-22 02:10:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:10:26,612 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 8 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) Word has length 366 [2024-11-22 02:10:26,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:26,615 INFO L225 Difference]: With dead ends: 402 [2024-11-22 02:10:26,615 INFO L226 Difference]: Without dead ends: 171 [2024-11-22 02:10:26,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 722 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:10:26,619 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 11 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:26,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 275 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-22 02:10:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-11-22 02:10:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 117 states have (on average 1.170940170940171) internal successors, (137), 115 states have internal predecessors, (137), 29 states have call successors, (29), 17 states have call predecessors, (29), 24 states have return successors, (121), 38 states have call predecessors, (121), 29 states have call successors, (121) [2024-11-22 02:10:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 287 transitions. [2024-11-22 02:10:26,640 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 287 transitions. Word has length 366 [2024-11-22 02:10:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:26,640 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 287 transitions. [2024-11-22 02:10:26,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 8 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (22), 6 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-22 02:10:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 287 transitions. [2024-11-22 02:10:26,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-22 02:10:26,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:26,649 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 33, 33, 30, 27, 19, 19, 19, 19, 19, 19, 19, 16, 16, 16, 16, 16, 16, 16, 14, 8, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:26,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 02:10:26,849 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 [2024-11-22 02:10:26,849 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:26,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:26,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1645946297, now seen corresponding path program 6 times [2024-11-22 02:10:26,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:26,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838997013] [2024-11-22 02:10:26,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:26,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:26,882 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-22 02:10:26,882 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6874 backedges. 635 proven. 2 refuted. 0 times theorem prover too weak. 6237 trivial. 0 not checked. [2024-11-22 02:10:26,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838997013] [2024-11-22 02:10:26,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838997013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744538790] [2024-11-22 02:10:26,974 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:26,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:26,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:26,976 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) [2024-11-22 02:10:26,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 02:10:27,089 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-22 02:10:27,089 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:27,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:10:27,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 6874 backedges. 767 proven. 6 refuted. 0 times theorem prover too weak. 6101 trivial. 0 not checked. [2024-11-22 02:10:27,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:28,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6874 backedges. 767 proven. 6 refuted. 0 times theorem prover too weak. 6101 trivial. 0 not checked. [2024-11-22 02:10:28,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744538790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:28,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:28,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-22 02:10:28,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796685986] [2024-11-22 02:10:28,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:28,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 02:10:28,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:28,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 02:10:28,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:10:28,111 INFO L87 Difference]: Start difference. First operand 171 states and 287 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 6 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-22 02:10:28,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:28,208 INFO L93 Difference]: Finished difference Result 316 states and 542 transitions. [2024-11-22 02:10:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 02:10:28,209 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 6 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) Word has length 487 [2024-11-22 02:10:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:28,210 INFO L225 Difference]: With dead ends: 316 [2024-11-22 02:10:28,210 INFO L226 Difference]: Without dead ends: 150 [2024-11-22 02:10:28,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 985 GetRequests, 963 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:10:28,211 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 30 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:28,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 135 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:28,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-22 02:10:28,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2024-11-22 02:10:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 101 states have internal predecessors, (121), 24 states have call successors, (24), 18 states have call predecessors, (24), 19 states have return successors, (73), 28 states have call predecessors, (73), 24 states have call successors, (73) [2024-11-22 02:10:28,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 218 transitions. [2024-11-22 02:10:28,222 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 218 transitions. Word has length 487 [2024-11-22 02:10:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:28,223 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 218 transitions. [2024-11-22 02:10:28,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 6 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (14), 5 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-22 02:10:28,223 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 218 transitions. [2024-11-22 02:10:28,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2024-11-22 02:10:28,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:28,225 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 25, 23, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 9, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:28,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 02:10:28,426 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 [2024-11-22 02:10:28,426 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:28,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:28,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1226637721, now seen corresponding path program 7 times [2024-11-22 02:10:28,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:28,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024553874] [2024-11-22 02:10:28,427 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:28,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 183 proven. 628 refuted. 0 times theorem prover too weak. 3334 trivial. 0 not checked. [2024-11-22 02:10:28,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:28,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024553874] [2024-11-22 02:10:28,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024553874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:28,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940967604] [2024-11-22 02:10:28,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:28,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:28,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:28,945 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) [2024-11-22 02:10:28,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 02:10:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:29,108 INFO L255 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:29,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 183 proven. 628 refuted. 0 times theorem prover too weak. 3334 trivial. 0 not checked. [2024-11-22 02:10:29,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4145 backedges. 183 proven. 644 refuted. 0 times theorem prover too weak. 3318 trivial. 0 not checked. [2024-11-22 02:10:30,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940967604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:30,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:30,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 15] total 17 [2024-11-22 02:10:30,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765925768] [2024-11-22 02:10:30,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:30,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:10:30,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:30,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:10:30,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:10:30,330 INFO L87 Difference]: Start difference. First operand 148 states and 218 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-22 02:10:30,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:30,457 INFO L93 Difference]: Finished difference Result 175 states and 275 transitions. [2024-11-22 02:10:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:10:30,457 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) Word has length 382 [2024-11-22 02:10:30,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:30,459 INFO L225 Difference]: With dead ends: 175 [2024-11-22 02:10:30,459 INFO L226 Difference]: Without dead ends: 171 [2024-11-22 02:10:30,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 755 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:10:30,460 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 34 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:30,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 156 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:30,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-22 02:10:30,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 163. [2024-11-22 02:10:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 113 states have (on average 1.1504424778761062) internal successors, (130), 110 states have internal predecessors, (130), 27 states have call successors, (27), 18 states have call predecessors, (27), 22 states have return successors, (97), 34 states have call predecessors, (97), 27 states have call successors, (97) [2024-11-22 02:10:30,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 254 transitions. [2024-11-22 02:10:30,473 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 254 transitions. Word has length 382 [2024-11-22 02:10:30,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:30,474 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 254 transitions. [2024-11-22 02:10:30,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 13 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-22 02:10:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 254 transitions. [2024-11-22 02:10:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-22 02:10:30,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:30,476 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 31, 30, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 12, 12, 8, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:30,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-22 02:10:30,677 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 [2024-11-22 02:10:30,677 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:30,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:30,678 INFO L85 PathProgramCache]: Analyzing trace with hash 849245375, now seen corresponding path program 8 times [2024-11-22 02:10:30,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:30,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285268468] [2024-11-22 02:10:30,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:30,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:30,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:30,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 259 proven. 681 refuted. 0 times theorem prover too weak. 6732 trivial. 0 not checked. [2024-11-22 02:10:31,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:31,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285268468] [2024-11-22 02:10:31,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285268468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:31,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369469347] [2024-11-22 02:10:31,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:31,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:31,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:31,010 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) [2024-11-22 02:10:31,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 02:10:31,228 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:31,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:31,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 1163 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:31,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 286 proven. 844 refuted. 0 times theorem prover too weak. 6542 trivial. 0 not checked. [2024-11-22 02:10:31,318 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 288 proven. 858 refuted. 0 times theorem prover too weak. 6526 trivial. 0 not checked. [2024-11-22 02:10:32,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369469347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:32,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:32,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 18 [2024-11-22 02:10:32,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560338582] [2024-11-22 02:10:32,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:32,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:10:32,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:32,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:10:32,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:10:32,923 INFO L87 Difference]: Start difference. First operand 163 states and 254 transitions. Second operand has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-22 02:10:33,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:33,088 INFO L93 Difference]: Finished difference Result 201 states and 357 transitions. [2024-11-22 02:10:33,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:10:33,089 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) Word has length 515 [2024-11-22 02:10:33,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:33,091 INFO L225 Difference]: With dead ends: 201 [2024-11-22 02:10:33,092 INFO L226 Difference]: Without dead ends: 197 [2024-11-22 02:10:33,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1046 GetRequests, 1018 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:33,093 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:33,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 184 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:33,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-22 02:10:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 168. [2024-11-22 02:10:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 116 states have (on average 1.146551724137931) internal successors, (133), 113 states have internal predecessors, (133), 28 states have call successors, (28), 18 states have call predecessors, (28), 23 states have return successors, (108), 36 states have call predecessors, (108), 28 states have call successors, (108) [2024-11-22 02:10:33,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 269 transitions. [2024-11-22 02:10:33,112 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 269 transitions. Word has length 515 [2024-11-22 02:10:33,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:33,113 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 269 transitions. [2024-11-22 02:10:33,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-22 02:10:33,113 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 269 transitions. [2024-11-22 02:10:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2024-11-22 02:10:33,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:33,117 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 35, 35, 30, 30, 19, 19, 19, 19, 19, 19, 19, 17, 17, 17, 17, 17, 17, 17, 13, 11, 8, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:33,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 02:10:33,318 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 [2024-11-22 02:10:33,318 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:33,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash 410560634, now seen corresponding path program 9 times [2024-11-22 02:10:33,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:33,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801868388] [2024-11-22 02:10:33,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:33,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:33,349 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:10:33,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7290 backedges. 780 proven. 149 refuted. 0 times theorem prover too weak. 6361 trivial. 0 not checked. [2024-11-22 02:10:33,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:33,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801868388] [2024-11-22 02:10:33,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801868388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:33,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634523038] [2024-11-22 02:10:33,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:33,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:33,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:33,410 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) [2024-11-22 02:10:33,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 02:10:33,599 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 02:10:33,599 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:33,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:10:33,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7290 backedges. 2975 proven. 4 refuted. 0 times theorem prover too weak. 4311 trivial. 0 not checked. [2024-11-22 02:10:33,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7290 backedges. 780 proven. 149 refuted. 0 times theorem prover too weak. 6361 trivial. 0 not checked. [2024-11-22 02:10:34,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634523038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:34,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:34,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-22 02:10:34,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087247234] [2024-11-22 02:10:34,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:34,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 02:10:34,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 02:10:34,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 02:10:34,724 INFO L87 Difference]: Start difference. First operand 168 states and 269 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-22 02:10:34,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:34,810 INFO L93 Difference]: Finished difference Result 320 states and 584 transitions. [2024-11-22 02:10:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:10:34,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 502 [2024-11-22 02:10:34,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:34,812 INFO L225 Difference]: With dead ends: 320 [2024-11-22 02:10:34,813 INFO L226 Difference]: Without dead ends: 158 [2024-11-22 02:10:34,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 999 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:10:34,814 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:34,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 124 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 02:10:34,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-22 02:10:34,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-11-22 02:10:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 110 states have (on average 1.1363636363636365) internal successors, (125), 106 states have internal predecessors, (125), 26 states have call successors, (26), 18 states have call predecessors, (26), 21 states have return successors, (102), 33 states have call predecessors, (102), 26 states have call successors, (102) [2024-11-22 02:10:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 253 transitions. [2024-11-22 02:10:34,828 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 253 transitions. Word has length 502 [2024-11-22 02:10:34,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:34,828 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 253 transitions. [2024-11-22 02:10:34,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-22 02:10:34,828 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 253 transitions. [2024-11-22 02:10:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2024-11-22 02:10:34,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:34,832 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 45, 45, 42, 37, 23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 20, 14, 8, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:34,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 02:10:35,035 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 [2024-11-22 02:10:35,036 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:35,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash 13967433, now seen corresponding path program 10 times [2024-11-22 02:10:35,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:35,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45975205] [2024-11-22 02:10:35,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:35,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:35,113 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:35,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11563 backedges. 554 proven. 934 refuted. 0 times theorem prover too weak. 10075 trivial. 0 not checked. [2024-11-22 02:10:35,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45975205] [2024-11-22 02:10:35,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45975205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843090240] [2024-11-22 02:10:35,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:35,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:35,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:35,460 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:35,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 02:10:35,685 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:35,685 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:35,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:35,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:35,795 INFO L134 CoverageAnalysis]: Checked inductivity of 11563 backedges. 377 proven. 1031 refuted. 0 times theorem prover too weak. 10155 trivial. 0 not checked. [2024-11-22 02:10:35,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 11563 backedges. 383 proven. 1041 refuted. 0 times theorem prover too weak. 10139 trivial. 0 not checked. [2024-11-22 02:10:37,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843090240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:37,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:37,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 23 [2024-11-22 02:10:37,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398524189] [2024-11-22 02:10:37,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:37,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:10:37,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:37,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:10:37,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:37,393 INFO L87 Difference]: Start difference. First operand 158 states and 253 transitions. Second operand has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 14 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 16 states have call predecessors, (30), 14 states have call successors, (30) [2024-11-22 02:10:37,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:37,605 INFO L93 Difference]: Finished difference Result 236 states and 508 transitions. [2024-11-22 02:10:37,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:10:37,606 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 14 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 16 states have call predecessors, (30), 14 states have call successors, (30) Word has length 629 [2024-11-22 02:10:37,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:37,608 INFO L225 Difference]: With dead ends: 236 [2024-11-22 02:10:37,608 INFO L226 Difference]: Without dead ends: 170 [2024-11-22 02:10:37,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1281 GetRequests, 1245 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2024-11-22 02:10:37,610 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:37,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 400 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:37,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-22 02:10:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 150. [2024-11-22 02:10:37,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 103 states have (on average 1.0970873786407767) internal successors, (113), 99 states have internal predecessors, (113), 24 states have call successors, (24), 15 states have call predecessors, (24), 22 states have return successors, (68), 35 states have call predecessors, (68), 24 states have call successors, (68) [2024-11-22 02:10:37,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 205 transitions. [2024-11-22 02:10:37,621 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 205 transitions. Word has length 629 [2024-11-22 02:10:37,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:37,622 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 205 transitions. [2024-11-22 02:10:37,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 14 states have call successors, (23), 1 states have call predecessors, (23), 10 states have return successors, (30), 16 states have call predecessors, (30), 14 states have call successors, (30) [2024-11-22 02:10:37,622 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 205 transitions. [2024-11-22 02:10:37,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-22 02:10:37,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:37,624 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 28, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 12, 10, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:37,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-22 02:10:37,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 02:10:37,825 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:37,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:37,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1605199973, now seen corresponding path program 11 times [2024-11-22 02:10:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:37,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175283745] [2024-11-22 02:10:37,826 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:37,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:37,904 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-11-22 02:10:37,904 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:38,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6109 backedges. 986 proven. 218 refuted. 0 times theorem prover too weak. 4905 trivial. 0 not checked. [2024-11-22 02:10:38,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:38,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175283745] [2024-11-22 02:10:38,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175283745] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:38,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076391529] [2024-11-22 02:10:38,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:38,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:38,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:38,248 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:38,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 02:10:38,449 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-11-22 02:10:38,450 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:38,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:38,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6109 backedges. 2541 proven. 71 refuted. 0 times theorem prover too weak. 3497 trivial. 0 not checked. [2024-11-22 02:10:38,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6109 backedges. 1068 proven. 250 refuted. 0 times theorem prover too weak. 4791 trivial. 0 not checked. [2024-11-22 02:10:39,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076391529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:39,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:39,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 15] total 24 [2024-11-22 02:10:39,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726242051] [2024-11-22 02:10:39,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:39,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 02:10:39,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 02:10:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-11-22 02:10:39,915 INFO L87 Difference]: Start difference. First operand 150 states and 205 transitions. Second operand has 24 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 24 states have internal predecessors, (91), 16 states have call successors, (26), 2 states have call predecessors, (26), 9 states have return successors, (31), 9 states have call predecessors, (31), 16 states have call successors, (31) [2024-11-22 02:10:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:40,176 INFO L93 Difference]: Finished difference Result 283 states and 434 transitions. [2024-11-22 02:10:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 02:10:40,177 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 24 states have internal predecessors, (91), 16 states have call successors, (26), 2 states have call predecessors, (26), 9 states have return successors, (31), 9 states have call predecessors, (31), 16 states have call successors, (31) Word has length 461 [2024-11-22 02:10:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:40,178 INFO L225 Difference]: With dead ends: 283 [2024-11-22 02:10:40,178 INFO L226 Difference]: Without dead ends: 139 [2024-11-22 02:10:40,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 907 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=1170, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 02:10:40,180 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 48 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:40,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 261 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-22 02:10:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2024-11-22 02:10:40,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 90 states have (on average 1.1) internal successors, (99), 88 states have internal predecessors, (99), 23 states have call successors, (23), 15 states have call predecessors, (23), 17 states have return successors, (54), 27 states have call predecessors, (54), 23 states have call successors, (54) [2024-11-22 02:10:40,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 176 transitions. [2024-11-22 02:10:40,192 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 176 transitions. Word has length 461 [2024-11-22 02:10:40,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:40,192 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 176 transitions. [2024-11-22 02:10:40,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.9565217391304346) internal successors, (91), 24 states have internal predecessors, (91), 16 states have call successors, (26), 2 states have call predecessors, (26), 9 states have return successors, (31), 9 states have call predecessors, (31), 16 states have call successors, (31) [2024-11-22 02:10:40,193 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 176 transitions. [2024-11-22 02:10:40,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-22 02:10:40,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:40,195 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 23, 23, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 9, 9, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:40,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:40,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:40,395 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:40,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:40,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1959194284, now seen corresponding path program 12 times [2024-11-22 02:10:40,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:40,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566101320] [2024-11-22 02:10:40,396 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:40,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:40,429 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 02:10:40,429 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 590 proven. 92 refuted. 0 times theorem prover too weak. 3688 trivial. 0 not checked. [2024-11-22 02:10:40,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:40,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566101320] [2024-11-22 02:10:40,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566101320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:40,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635325563] [2024-11-22 02:10:40,601 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:40,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:40,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:40,603 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:40,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 02:10:40,784 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-22 02:10:40,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:40,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:10:40,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 603 proven. 95 refuted. 0 times theorem prover too weak. 3672 trivial. 0 not checked. [2024-11-22 02:10:40,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:41,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4370 backedges. 607 proven. 101 refuted. 0 times theorem prover too weak. 3662 trivial. 0 not checked. [2024-11-22 02:10:41,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635325563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:41,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:41,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 17 [2024-11-22 02:10:41,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856486617] [2024-11-22 02:10:41,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:41,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 02:10:41,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:41,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 02:10:41,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-22 02:10:41,708 INFO L87 Difference]: Start difference. First operand 131 states and 176 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-22 02:10:41,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:41,837 INFO L93 Difference]: Finished difference Result 152 states and 204 transitions. [2024-11-22 02:10:41,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:10:41,838 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) Word has length 392 [2024-11-22 02:10:41,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:41,840 INFO L225 Difference]: With dead ends: 152 [2024-11-22 02:10:41,840 INFO L226 Difference]: Without dead ends: 145 [2024-11-22 02:10:41,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 774 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:10:41,841 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:41,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 211 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:41,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-22 02:10:41,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 134. [2024-11-22 02:10:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 92 states have (on average 1.0978260869565217) internal successors, (101), 90 states have internal predecessors, (101), 23 states have call successors, (23), 15 states have call predecessors, (23), 18 states have return successors, (55), 28 states have call predecessors, (55), 23 states have call successors, (55) [2024-11-22 02:10:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 179 transitions. [2024-11-22 02:10:41,853 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 179 transitions. Word has length 392 [2024-11-22 02:10:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:41,853 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 179 transitions. [2024-11-22 02:10:41,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 11 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (21), 10 states have call predecessors, (21), 11 states have call successors, (21) [2024-11-22 02:10:41,853 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 179 transitions. [2024-11-22 02:10:41,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2024-11-22 02:10:41,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:41,855 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 36, 36, 32, 28, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 14, 9, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:41,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-22 02:10:42,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:42,056 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:42,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:42,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1441642335, now seen corresponding path program 13 times [2024-11-22 02:10:42,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:42,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607790509] [2024-11-22 02:10:42,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:42,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7654 backedges. 308 proven. 883 refuted. 0 times theorem prover too weak. 6463 trivial. 0 not checked. [2024-11-22 02:10:42,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:42,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607790509] [2024-11-22 02:10:42,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607790509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:42,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715510005] [2024-11-22 02:10:42,429 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:42,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:42,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:42,431 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:42,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 02:10:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:42,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 1161 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:10:42,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7654 backedges. 341 proven. 1141 refuted. 0 times theorem prover too weak. 6172 trivial. 0 not checked. [2024-11-22 02:10:42,851 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7654 backedges. 343 proven. 1169 refuted. 0 times theorem prover too weak. 6142 trivial. 0 not checked. [2024-11-22 02:10:45,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715510005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:45,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:45,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 25 [2024-11-22 02:10:45,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531005011] [2024-11-22 02:10:45,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:45,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 02:10:45,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:45,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 02:10:45,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:10:45,192 INFO L87 Difference]: Start difference. First operand 134 states and 179 transitions. Second operand has 25 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 25 states have internal predecessors, (82), 18 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (31), 14 states have call predecessors, (31), 18 states have call successors, (31) [2024-11-22 02:10:45,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:45,397 INFO L93 Difference]: Finished difference Result 174 states and 240 transitions. [2024-11-22 02:10:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:10:45,397 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 25 states have internal predecessors, (82), 18 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (31), 14 states have call predecessors, (31), 18 states have call successors, (31) Word has length 514 [2024-11-22 02:10:45,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:45,399 INFO L225 Difference]: With dead ends: 174 [2024-11-22 02:10:45,399 INFO L226 Difference]: Without dead ends: 132 [2024-11-22 02:10:45,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 1011 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 02:10:45,400 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 19 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:45,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 410 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:45,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-22 02:10:45,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2024-11-22 02:10:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 89 states have (on average 1.101123595505618) internal successors, (98), 87 states have internal predecessors, (98), 22 states have call successors, (22), 15 states have call predecessors, (22), 17 states have return successors, (47), 26 states have call predecessors, (47), 22 states have call successors, (47) [2024-11-22 02:10:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2024-11-22 02:10:45,416 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 514 [2024-11-22 02:10:45,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:45,416 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2024-11-22 02:10:45,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 25 states have internal predecessors, (82), 18 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (31), 14 states have call predecessors, (31), 18 states have call successors, (31) [2024-11-22 02:10:45,416 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2024-11-22 02:10:45,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-22 02:10:45,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:45,418 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 32, 32, 28, 26, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 12, 9, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:45,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-22 02:10:45,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:45,619 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:45,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1394197521, now seen corresponding path program 14 times [2024-11-22 02:10:45,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:45,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557832001] [2024-11-22 02:10:45,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:45,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:45,655 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:45,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6091 backedges. 350 proven. 485 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2024-11-22 02:10:45,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:45,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557832001] [2024-11-22 02:10:45,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557832001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:45,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571570931] [2024-11-22 02:10:45,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:10:45,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:45,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:45,843 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:45,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-22 02:10:46,086 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:10:46,086 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:46,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:46,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6091 backedges. 406 proven. 587 refuted. 0 times theorem prover too weak. 5098 trivial. 0 not checked. [2024-11-22 02:10:46,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6091 backedges. 408 proven. 601 refuted. 0 times theorem prover too weak. 5082 trivial. 0 not checked. [2024-11-22 02:10:47,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571570931] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:47,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:47,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 18 [2024-11-22 02:10:47,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290307753] [2024-11-22 02:10:47,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:47,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:10:47,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:47,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:10:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:10:47,461 INFO L87 Difference]: Start difference. First operand 129 states and 167 transitions. Second operand has 18 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 13 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 9 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-22 02:10:47,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:47,581 INFO L93 Difference]: Finished difference Result 146 states and 190 transitions. [2024-11-22 02:10:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:10:47,582 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 13 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 9 states have call predecessors, (22), 13 states have call successors, (22) Word has length 460 [2024-11-22 02:10:47,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:47,584 INFO L225 Difference]: With dead ends: 146 [2024-11-22 02:10:47,584 INFO L226 Difference]: Without dead ends: 137 [2024-11-22 02:10:47,585 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 936 GetRequests, 908 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:47,585 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 52 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:47,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 147 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-22 02:10:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 129. [2024-11-22 02:10:47,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 89 states have (on average 1.101123595505618) internal successors, (98), 87 states have internal predecessors, (98), 22 states have call successors, (22), 15 states have call predecessors, (22), 17 states have return successors, (47), 26 states have call predecessors, (47), 22 states have call successors, (47) [2024-11-22 02:10:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2024-11-22 02:10:47,598 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 460 [2024-11-22 02:10:47,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:47,599 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2024-11-22 02:10:47,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.823529411764706) internal successors, (65), 18 states have internal predecessors, (65), 13 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (22), 9 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-22 02:10:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2024-11-22 02:10:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-22 02:10:47,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:47,602 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 36, 36, 30, 29, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 12, 11, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:47,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-22 02:10:47,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-22 02:10:47,806 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:47,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:47,806 INFO L85 PathProgramCache]: Analyzing trace with hash -407244746, now seen corresponding path program 15 times [2024-11-22 02:10:47,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:47,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495787120] [2024-11-22 02:10:47,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:47,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:47,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-22 02:10:47,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 1013 proven. 204 refuted. 0 times theorem prover too weak. 6032 trivial. 0 not checked. [2024-11-22 02:10:48,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495787120] [2024-11-22 02:10:48,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495787120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114614340] [2024-11-22 02:10:48,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:10:48,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:48,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:48,091 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:48,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-22 02:10:48,304 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-22 02:10:48,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:48,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:48,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:48,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 2635 proven. 79 refuted. 0 times theorem prover too weak. 4535 trivial. 0 not checked. [2024-11-22 02:10:48,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7249 backedges. 1105 proven. 237 refuted. 0 times theorem prover too weak. 5907 trivial. 0 not checked. [2024-11-22 02:10:49,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114614340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:49,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:49,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 15] total 23 [2024-11-22 02:10:49,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877844851] [2024-11-22 02:10:49,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:49,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 02:10:49,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:49,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 02:10:49,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:10:49,792 INFO L87 Difference]: Start difference. First operand 129 states and 167 transitions. Second operand has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 14 states have call successors, (27), 2 states have call predecessors, (27), 8 states have return successors, (31), 12 states have call predecessors, (31), 14 states have call successors, (31) [2024-11-22 02:10:50,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:50,011 INFO L93 Difference]: Finished difference Result 262 states and 350 transitions. [2024-11-22 02:10:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 02:10:50,013 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 14 states have call successors, (27), 2 states have call predecessors, (27), 8 states have return successors, (31), 12 states have call predecessors, (31), 14 states have call successors, (31) Word has length 501 [2024-11-22 02:10:50,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:50,014 INFO L225 Difference]: With dead ends: 262 [2024-11-22 02:10:50,015 INFO L226 Difference]: Without dead ends: 140 [2024-11-22 02:10:50,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 987 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 02:10:50,016 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:50,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 338 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:50,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-22 02:10:50,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2024-11-22 02:10:50,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 93 states have (on average 1.075268817204301) internal successors, (100), 90 states have internal predecessors, (100), 22 states have call successors, (22), 16 states have call predecessors, (22), 18 states have return successors, (52), 27 states have call predecessors, (52), 22 states have call successors, (52) [2024-11-22 02:10:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 174 transitions. [2024-11-22 02:10:50,025 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 174 transitions. Word has length 501 [2024-11-22 02:10:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:50,025 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 174 transitions. [2024-11-22 02:10:50,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 14 states have call successors, (27), 2 states have call predecessors, (27), 8 states have return successors, (31), 12 states have call predecessors, (31), 14 states have call successors, (31) [2024-11-22 02:10:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 174 transitions. [2024-11-22 02:10:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-11-22 02:10:50,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:50,027 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 37, 37, 32, 30, 21, 21, 21, 21, 21, 21, 21, 18, 18, 18, 18, 18, 18, 18, 14, 10, 9, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:50,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:50,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-22 02:10:50,228 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:50,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:50,229 INFO L85 PathProgramCache]: Analyzing trace with hash 348298115, now seen corresponding path program 16 times [2024-11-22 02:10:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:50,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215835117] [2024-11-22 02:10:50,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:50,259 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:50,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8491 backedges. 481 proven. 574 refuted. 0 times theorem prover too weak. 7436 trivial. 0 not checked. [2024-11-22 02:10:50,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:50,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215835117] [2024-11-22 02:10:50,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215835117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:50,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272767813] [2024-11-22 02:10:50,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:10:50,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:50,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:50,596 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:50,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-22 02:10:50,855 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:10:50,855 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:50,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:10:50,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8491 backedges. 551 proven. 642 refuted. 0 times theorem prover too weak. 7298 trivial. 0 not checked. [2024-11-22 02:10:50,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8491 backedges. 553 proven. 656 refuted. 0 times theorem prover too weak. 7282 trivial. 0 not checked. [2024-11-22 02:10:52,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272767813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:52,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:52,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-22 02:10:52,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362871090] [2024-11-22 02:10:52,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:52,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 02:10:52,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:52,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 02:10:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-22 02:10:52,374 INFO L87 Difference]: Start difference. First operand 134 states and 174 transitions. Second operand has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 12 states have call successors, (21), 1 states have call predecessors, (21), 7 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-22 02:10:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:52,523 INFO L93 Difference]: Finished difference Result 161 states and 213 transitions. [2024-11-22 02:10:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 02:10:52,523 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 12 states have call successors, (21), 1 states have call predecessors, (21), 7 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) Word has length 540 [2024-11-22 02:10:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:52,525 INFO L225 Difference]: With dead ends: 161 [2024-11-22 02:10:52,525 INFO L226 Difference]: Without dead ends: 146 [2024-11-22 02:10:52,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1099 GetRequests, 1068 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-11-22 02:10:52,526 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:52,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 201 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:52,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-22 02:10:52,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 137. [2024-11-22 02:10:52,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 95 states have (on average 1.0736842105263158) internal successors, (102), 92 states have internal predecessors, (102), 22 states have call successors, (22), 16 states have call predecessors, (22), 19 states have return successors, (53), 28 states have call predecessors, (53), 22 states have call successors, (53) [2024-11-22 02:10:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 177 transitions. [2024-11-22 02:10:52,534 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 177 transitions. Word has length 540 [2024-11-22 02:10:52,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:52,535 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 177 transitions. [2024-11-22 02:10:52,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.5789473684210527) internal successors, (68), 20 states have internal predecessors, (68), 12 states have call successors, (21), 1 states have call predecessors, (21), 7 states have return successors, (24), 13 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-22 02:10:52,535 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 177 transitions. [2024-11-22 02:10:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2024-11-22 02:10:52,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:52,537 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 39, 39, 33, 32, 21, 21, 21, 21, 21, 21, 21, 19, 19, 19, 19, 19, 19, 19, 14, 11, 9, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:52,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-22 02:10:52,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:52,738 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:52,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:52,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1671850814, now seen corresponding path program 17 times [2024-11-22 02:10:52,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:52,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237622040] [2024-11-22 02:10:52,738 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:52,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:52,770 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-22 02:10:52,770 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8956 backedges. 1227 proven. 473 refuted. 0 times theorem prover too weak. 7256 trivial. 0 not checked. [2024-11-22 02:10:53,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:53,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237622040] [2024-11-22 02:10:53,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237622040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:53,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592716711] [2024-11-22 02:10:53,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:10:53,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:53,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:53,044 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:53,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-22 02:10:53,324 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-22 02:10:53,325 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:53,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:10:53,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:53,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8956 backedges. 3889 proven. 176 refuted. 0 times theorem prover too weak. 4891 trivial. 0 not checked. [2024-11-22 02:10:53,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 8956 backedges. 1223 proven. 481 refuted. 0 times theorem prover too weak. 7252 trivial. 0 not checked. [2024-11-22 02:10:55,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592716711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:55,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:55,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 17] total 22 [2024-11-22 02:10:55,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062733786] [2024-11-22 02:10:55,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:55,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 02:10:55,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:55,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 02:10:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-22 02:10:55,002 INFO L87 Difference]: Start difference. First operand 137 states and 177 transitions. Second operand has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 22 states have internal predecessors, (94), 16 states have call successors, (26), 2 states have call predecessors, (26), 9 states have return successors, (30), 10 states have call predecessors, (30), 16 states have call successors, (30) [2024-11-22 02:10:55,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:55,296 INFO L93 Difference]: Finished difference Result 287 states and 387 transitions. [2024-11-22 02:10:55,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 02:10:55,297 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 22 states have internal predecessors, (94), 16 states have call successors, (26), 2 states have call predecessors, (26), 9 states have return successors, (30), 10 states have call predecessors, (30), 16 states have call successors, (30) Word has length 555 [2024-11-22 02:10:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:55,298 INFO L225 Difference]: With dead ends: 287 [2024-11-22 02:10:55,298 INFO L226 Difference]: Without dead ends: 149 [2024-11-22 02:10:55,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1137 GetRequests, 1097 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=929, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 02:10:55,300 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 61 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:55,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 297 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:10:55,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-22 02:10:55,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 138. [2024-11-22 02:10:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 93 states have internal predecessors, (103), 23 states have call successors, (23), 17 states have call predecessors, (23), 18 states have return successors, (51), 27 states have call predecessors, (51), 23 states have call successors, (51) [2024-11-22 02:10:55,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 177 transitions. [2024-11-22 02:10:55,315 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 177 transitions. Word has length 555 [2024-11-22 02:10:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:55,315 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 177 transitions. [2024-11-22 02:10:55,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 22 states have internal predecessors, (94), 16 states have call successors, (26), 2 states have call predecessors, (26), 9 states have return successors, (30), 10 states have call predecessors, (30), 16 states have call successors, (30) [2024-11-22 02:10:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 177 transitions. [2024-11-22 02:10:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2024-11-22 02:10:55,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:55,317 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 31, 31, 27, 26, 18, 18, 18, 18, 18, 18, 18, 15, 15, 15, 15, 15, 15, 15, 12, 9, 8, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:55,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-22 02:10:55,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:55,518 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:55,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:55,518 INFO L85 PathProgramCache]: Analyzing trace with hash 890060511, now seen corresponding path program 18 times [2024-11-22 02:10:55,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:55,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723737471] [2024-11-22 02:10:55,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:55,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:55,536 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-22 02:10:55,536 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6088 backedges. 803 proven. 38 refuted. 0 times theorem prover too weak. 5247 trivial. 0 not checked. [2024-11-22 02:10:55,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:55,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723737471] [2024-11-22 02:10:55,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723737471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:55,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966404404] [2024-11-22 02:10:55,648 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:10:55,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:55,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:55,650 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:55,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-22 02:10:55,851 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-22 02:10:55,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:10:55,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 02:10:55,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6088 backedges. 1370 proven. 21 refuted. 0 times theorem prover too weak. 4697 trivial. 0 not checked. [2024-11-22 02:10:55,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:10:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6088 backedges. 916 proven. 48 refuted. 0 times theorem prover too weak. 5124 trivial. 0 not checked. [2024-11-22 02:10:56,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966404404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:10:56,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:10:56,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-22 02:10:56,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469815483] [2024-11-22 02:10:56,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:10:56,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:10:56,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:10:56,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:10:56,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:10:56,923 INFO L87 Difference]: Start difference. First operand 138 states and 177 transitions. Second operand has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 10 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (21), 5 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-22 02:10:57,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:10:57,144 INFO L93 Difference]: Finished difference Result 272 states and 364 transitions. [2024-11-22 02:10:57,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 02:10:57,144 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 10 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (21), 5 states have call predecessors, (21), 10 states have call successors, (21) Word has length 459 [2024-11-22 02:10:57,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:10:57,146 INFO L225 Difference]: With dead ends: 272 [2024-11-22 02:10:57,146 INFO L226 Difference]: Without dead ends: 137 [2024-11-22 02:10:57,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 907 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:10:57,148 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:10:57,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 166 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:10:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-22 02:10:57,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2024-11-22 02:10:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 91 states have internal predecessors, (103), 23 states have call successors, (23), 18 states have call predecessors, (23), 16 states have return successors, (43), 25 states have call predecessors, (43), 23 states have call successors, (43) [2024-11-22 02:10:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 169 transitions. [2024-11-22 02:10:57,161 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 169 transitions. Word has length 459 [2024-11-22 02:10:57,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:10:57,162 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 169 transitions. [2024-11-22 02:10:57,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 18 states have internal predecessors, (69), 10 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (21), 5 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-22 02:10:57,162 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 169 transitions. [2024-11-22 02:10:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2024-11-22 02:10:57,165 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:10:57,165 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 41, 41, 34, 33, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 14, 12, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:10:57,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-22 02:10:57,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-22 02:10:57,366 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:10:57,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:10:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash -106761143, now seen corresponding path program 19 times [2024-11-22 02:10:57,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:10:57,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015290073] [2024-11-22 02:10:57,367 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:10:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 849 proven. 481 refuted. 0 times theorem prover too weak. 8083 trivial. 0 not checked. [2024-11-22 02:10:57,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:10:57,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015290073] [2024-11-22 02:10:57,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015290073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:10:57,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267229006] [2024-11-22 02:10:57,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:10:57,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:10:57,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:10:57,877 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:10:57,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-22 02:10:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:10:58,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-22 02:10:58,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:10:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 1038 proven. 628 refuted. 0 times theorem prover too weak. 7747 trivial. 0 not checked. [2024-11-22 02:10:58,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:00,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 1038 proven. 658 refuted. 0 times theorem prover too weak. 7717 trivial. 0 not checked. [2024-11-22 02:11:00,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267229006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:00,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:00,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 25 [2024-11-22 02:11:00,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874773945] [2024-11-22 02:11:00,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:00,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 02:11:00,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:00,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 02:11:00,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-22 02:11:00,828 INFO L87 Difference]: Start difference. First operand 135 states and 169 transitions. Second operand has 25 states, 24 states have (on average 3.375) internal successors, (81), 25 states have internal predecessors, (81), 18 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 13 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:11:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:01,005 INFO L93 Difference]: Finished difference Result 148 states and 181 transitions. [2024-11-22 02:11:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 02:11:01,007 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.375) internal successors, (81), 25 states have internal predecessors, (81), 18 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 13 states have call predecessors, (30), 18 states have call successors, (30) Word has length 569 [2024-11-22 02:11:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:01,008 INFO L225 Difference]: With dead ends: 148 [2024-11-22 02:11:01,008 INFO L226 Difference]: Without dead ends: 138 [2024-11-22 02:11:01,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1161 GetRequests, 1121 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=844, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 02:11:01,009 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 15 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:01,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 427 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:11:01,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-22 02:11:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 135. [2024-11-22 02:11:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 91 states have internal predecessors, (103), 23 states have call successors, (23), 18 states have call predecessors, (23), 16 states have return successors, (39), 25 states have call predecessors, (39), 23 states have call successors, (39) [2024-11-22 02:11:01,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 165 transitions. [2024-11-22 02:11:01,018 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 165 transitions. Word has length 569 [2024-11-22 02:11:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:01,018 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 165 transitions. [2024-11-22 02:11:01,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.375) internal successors, (81), 25 states have internal predecessors, (81), 18 states have call successors, (24), 1 states have call predecessors, (24), 10 states have return successors, (30), 13 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-22 02:11:01,018 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 165 transitions. [2024-11-22 02:11:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2024-11-22 02:11:01,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:01,020 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 25, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 10, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:01,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-22 02:11:01,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-22 02:11:01,221 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:01,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1862425916, now seen corresponding path program 20 times [2024-11-22 02:11:01,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:01,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855535031] [2024-11-22 02:11:01,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:11:01,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:01,312 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:11:01,312 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 557 proven. 195 refuted. 0 times theorem prover too weak. 4264 trivial. 0 not checked. [2024-11-22 02:11:01,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:11:01,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855535031] [2024-11-22 02:11:01,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855535031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:11:01,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204555519] [2024-11-22 02:11:01,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:11:01,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:11:01,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:11:01,578 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:11:01,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-22 02:11:01,851 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:11:01,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:11:01,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:11:01,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:11:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 665 proven. 231 refuted. 0 times theorem prover too weak. 4120 trivial. 0 not checked. [2024-11-22 02:11:01,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:11:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5016 backedges. 669 proven. 243 refuted. 0 times theorem prover too weak. 4104 trivial. 0 not checked. [2024-11-22 02:11:03,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204555519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:11:03,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:11:03,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 15] total 18 [2024-11-22 02:11:03,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422374145] [2024-11-22 02:11:03,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:11:03,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:11:03,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:11:03,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:11:03,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:11:03,082 INFO L87 Difference]: Start difference. First operand 135 states and 165 transitions. Second operand has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-22 02:11:03,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:11:03,196 INFO L93 Difference]: Finished difference Result 152 states and 184 transitions. [2024-11-22 02:11:03,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 02:11:03,196 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) Word has length 419 [2024-11-22 02:11:03,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:11:03,197 INFO L225 Difference]: With dead ends: 152 [2024-11-22 02:11:03,197 INFO L226 Difference]: Without dead ends: 142 [2024-11-22 02:11:03,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 826 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-11-22 02:11:03,198 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:11:03,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 158 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:11:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-22 02:11:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2024-11-22 02:11:03,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 96 states have (on average 1.0833333333333333) internal successors, (104), 92 states have internal predecessors, (104), 24 states have call successors, (24), 18 states have call predecessors, (24), 16 states have return successors, (39), 26 states have call predecessors, (39), 24 states have call successors, (39) [2024-11-22 02:11:03,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 167 transitions. [2024-11-22 02:11:03,207 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 167 transitions. Word has length 419 [2024-11-22 02:11:03,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:11:03,207 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 167 transitions. [2024-11-22 02:11:03,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 18 states have internal predecessors, (66), 13 states have call successors, (19), 1 states have call predecessors, (19), 8 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-22 02:11:03,208 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 167 transitions. [2024-11-22 02:11:03,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2024-11-22 02:11:03,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:11:03,209 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:03,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-22 02:11:03,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-22 02:11:03,410 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:11:03,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:11:03,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1402769443, now seen corresponding path program 21 times [2024-11-22 02:11:03,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:11:03,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089680859] [2024-11-22 02:11:03,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:11:03,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:11:03,465 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2024-11-22 02:11:03,465 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-22 02:11:03,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-22 02:11:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-22 02:11:03,549 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-22 02:11:03,549 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-22 02:11:03,551 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 02:11:03,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-22 02:11:03,556 INFO L407 BasicCegarLoop]: Path program histogram: [21, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:11:03,663 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 02:11:03,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:11:03 BoogieIcfgContainer [2024-11-22 02:11:03,669 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 02:11:03,669 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 02:11:03,669 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 02:11:03,669 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 02:11:03,670 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:10:08" (3/4) ... [2024-11-22 02:11:03,670 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-22 02:11:03,739 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 02:11:03,739 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 02:11:03,739 INFO L158 Benchmark]: Toolchain (without parser) took 55926.31ms. Allocated memory was 165.7MB in the beginning and 866.1MB in the end (delta: 700.4MB). Free memory was 136.5MB in the beginning and 798.4MB in the end (delta: -662.0MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2024-11-22 02:11:03,739 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory was 91.2MB in the beginning and 91.1MB in the end (delta: 119.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 02:11:03,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.03ms. Allocated memory is still 165.7MB. Free memory was 136.5MB in the beginning and 123.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-22 02:11:03,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.47ms. Allocated memory is still 165.7MB. Free memory was 123.9MB in the beginning and 122.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 02:11:03,740 INFO L158 Benchmark]: Boogie Preprocessor took 32.46ms. Allocated memory is still 165.7MB. Free memory was 122.5MB in the beginning and 121.1MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 02:11:03,740 INFO L158 Benchmark]: RCFGBuilder took 226.95ms. Allocated memory is still 165.7MB. Free memory was 121.1MB in the beginning and 109.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-22 02:11:03,740 INFO L158 Benchmark]: TraceAbstraction took 55343.76ms. Allocated memory was 165.7MB in the beginning and 866.1MB in the end (delta: 700.4MB). Free memory was 109.2MB in the beginning and 807.9MB in the end (delta: -698.7MB). Peak memory consumption was 502.0MB. Max. memory is 16.1GB. [2024-11-22 02:11:03,740 INFO L158 Benchmark]: Witness Printer took 69.79ms. Allocated memory is still 866.1MB. Free memory was 807.9MB in the beginning and 798.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-22 02:11:03,741 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 130.0MB. Free memory was 91.2MB in the beginning and 91.1MB in the end (delta: 119.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.03ms. Allocated memory is still 165.7MB. Free memory was 136.5MB in the beginning and 123.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.47ms. Allocated memory is still 165.7MB. Free memory was 123.9MB in the beginning and 122.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.46ms. Allocated memory is still 165.7MB. Free memory was 122.5MB in the beginning and 121.1MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 226.95ms. Allocated memory is still 165.7MB. Free memory was 121.1MB in the beginning and 109.9MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 55343.76ms. Allocated memory was 165.7MB in the beginning and 866.1MB in the end (delta: 700.4MB). Free memory was 109.2MB in the beginning and 807.9MB in the end (delta: -698.7MB). Peak memory consumption was 502.0MB. Max. memory is 16.1GB. * Witness Printer took 69.79ms. Allocated memory is still 866.1MB. Free memory was 807.9MB in the beginning and 798.4MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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 - CounterExampleResult [Line: 41]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L38] int x = 8; VAL [x=8] [L39] CALL, EXPR fibo1(x) VAL [\old(n)=8] [L10] COND FALSE !(n < 1) VAL [\old(n)=8, n=8] [L12] COND FALSE !(n == 1) VAL [\old(n)=8, n=8] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=7] [L20] COND FALSE !(n < 1) VAL [\old(n)=7, n=7] [L22] COND FALSE !(n == 1) VAL [\old(n)=7, n=7] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=6] [L10] COND FALSE !(n < 1) VAL [\old(n)=6, n=6] [L12] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=5] [L20] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L22] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=4, n=4] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=5, n=5] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=5, n=5] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=6, n=6] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=6, n=6] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=7, n=7] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=5] [L10] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L12] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=5, n=5] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=7, n=7] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=8, n=8] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=6] [L20] COND FALSE !(n < 1) VAL [\old(n)=6, n=6] [L22] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=5] [L10] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L12] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=5, n=5] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=5, n=5] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=6, n=6] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=4, n=4] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=6, n=6] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=8, n=8] [L15] return fibo2(n-1) + fibo2(n-2); [L39] RET, EXPR fibo1(x) VAL [x=8] [L39] int result = fibo1(x); [L40] COND TRUE result == 21 VAL [x=8] [L41] reach_error() VAL [x=8] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.2s, OverallIterations: 29, TraceHistogramMax: 46, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.1s, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1088 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 969 mSDsluCounter, 6663 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5848 mSDsCounter, 953 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7222 IncrementalHoareTripleChecker+Invalid, 8175 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 953 mSolverCounterUnsat, 815 mSDtfsCounter, 7222 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18852 GetRequests, 18048 SyntacticMatches, 153 SemanticMatches, 651 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4444 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=12, InterpolantAutomatonStates: 396, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 28 MinimizatonAttempts, 300 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 38.0s InterpolantComputationTime, 18833 NumberOfCodeBlocks, 13859 NumberOfCodeBlocksAsserted, 304 NumberOfCheckSat, 27469 ConstructedInterpolants, 0 QuantifiedInterpolants, 34971 SizeOfPredicates, 112 NumberOfNonLiveVariables, 15081 ConjunctsInSsa, 318 ConjunctsInUnsatCore, 80 InterpolantComputations, 2 PerfectInterpolantSequences, 338079/363882 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-22 02:11:03,771 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE