./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.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 e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:25:04,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:25:05,057 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:25:05,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:25:05,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:25:05,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:25:05,112 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:25:05,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:25:05,113 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:25:05,115 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:25:05,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:25:05,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:25:05,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:25:05,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:25:05,120 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:25:05,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:25:05,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:25:05,121 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:25:05,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:25:05,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:25:05,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:25:05,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:25:05,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:25:05,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:25:05,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:25:05,124 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:25:05,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:25:05,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:25:05,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:25:05,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:25:05,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:25:05,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:25:05,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:25:05,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:25:05,126 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:25:05,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:25:05,127 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:25:05,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:25:05,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:25:05,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:25:05,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:25:05,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:25:05,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe [2024-11-18 14:25:05,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:25:05,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:25:05,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:25:05,416 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:25:05,417 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:25:05,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-11-18 14:25:06,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:25:06,973 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:25:06,974 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-11-18 14:25:06,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/425128537/3063ebfac9604c89831388858b4a489f/FLAG1ecb4b06d [2024-11-18 14:25:07,374 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/425128537/3063ebfac9604c89831388858b4a489f [2024-11-18 14:25:07,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:25:07,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:25:07,382 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:25:07,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:25:07,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:25:07,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1adf3a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07, skipping insertion in model container [2024-11-18 14:25:07,390 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,413 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:25:07,598 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_6-1.c[946,959] [2024-11-18 14:25:07,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:25:07,614 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:25:07,629 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_6-1.c[946,959] [2024-11-18 14:25:07,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:25:07,646 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:25:07,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07 WrapperNode [2024-11-18 14:25:07,647 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:25:07,648 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:25:07,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:25:07,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:25:07,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,665 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,679 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2024-11-18 14:25:07,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:25:07,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:25:07,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:25:07,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:25:07,690 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,691 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,701 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 14:25:07,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:25:07,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:25:07,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:25:07,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:25:07,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (1/1) ... [2024-11-18 14:25:07,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:25:07,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:07,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 14:25:07,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 14:25:07,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:25:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:25:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-18 14:25:07,791 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-18 14:25:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-18 14:25:07,791 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-18 14:25:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:25:07,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:25:07,846 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:25:07,848 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:25:07,945 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-18 14:25:07,945 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:25:07,958 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:25:07,958 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 14:25:07,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:25:07 BoogieIcfgContainer [2024-11-18 14:25:07,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:25:07,961 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:25:07,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:25:07,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:25:07,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:25:07" (1/3) ... [2024-11-18 14:25:07,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dad6330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:25:07, skipping insertion in model container [2024-11-18 14:25:07,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:25:07" (2/3) ... [2024-11-18 14:25:07,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dad6330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:25:07, skipping insertion in model container [2024-11-18 14:25:07,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:25:07" (3/3) ... [2024-11-18 14:25:07,967 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2024-11-18 14:25:07,996 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:25:07,996 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:25:08,064 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:25:08,073 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;@78646976, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:25:08,073 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:25:08,078 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) [2024-11-18 14:25:08,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 14:25:08,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:08,086 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:08,087 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:08,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:08,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2024-11-18 14:25:08,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:08,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447055131] [2024-11-18 14:25:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:08,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:25:08,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:08,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447055131] [2024-11-18 14:25:08,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447055131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:25:08,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:25:08,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:25:08,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493383789] [2024-11-18 14:25:08,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:25:08,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:25:08,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:08,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:25:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:08,418 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, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:25:08,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:08,525 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-11-18 14:25:08,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:25:08,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-18 14:25:08,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:08,537 INFO L225 Difference]: With dead ends: 41 [2024-11-18 14:25:08,537 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 14:25:08,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:08,543 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:08,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 97 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:08,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 14:25:08,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-18 14:25:08,585 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) [2024-11-18 14:25:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-18 14:25:08,588 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2024-11-18 14:25:08,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:08,589 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-18 14:25:08,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:25:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-18 14:25:08,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-18 14:25:08,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:08,593 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:08,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:25:08,593 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:08,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:08,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2024-11-18 14:25:08,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:08,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835353289] [2024-11-18 14:25:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:08,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 14:25:08,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:08,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835353289] [2024-11-18 14:25:08,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835353289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:25:08,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:25:08,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:25:08,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817781682] [2024-11-18 14:25:08,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:25:08,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:25:08,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:08,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:25:08,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:08,714 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:25:08,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:08,776 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-18 14:25:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:25:08,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-18 14:25:08,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:08,779 INFO L225 Difference]: With dead ends: 33 [2024-11-18 14:25:08,779 INFO L226 Difference]: Without dead ends: 29 [2024-11-18 14:25:08,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:25:08,780 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:08,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-18 14:25:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-11-18 14:25:08,794 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) [2024-11-18 14:25:08,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2024-11-18 14:25:08,796 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2024-11-18 14:25:08,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:08,796 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2024-11-18 14:25:08,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:25:08,797 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-18 14:25:08,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-18 14:25:08,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:08,799 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] [2024-11-18 14:25:08,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 14:25:08,799 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:08,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:08,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2024-11-18 14:25:08,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:08,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205329721] [2024-11-18 14:25:08,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:08,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:08,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:08,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205329721] [2024-11-18 14:25:08,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205329721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:08,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149222342] [2024-11-18 14:25:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:08,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:08,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:08,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:08,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 14:25:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:08,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:25:09,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:09,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:09,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149222342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:09,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:09,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-11-18 14:25:09,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367641904] [2024-11-18 14:25:09,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:09,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-18 14:25:09,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:09,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-18 14:25:09,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-18 14:25:09,387 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) [2024-11-18 14:25:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:09,543 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2024-11-18 14:25:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:25:09,545 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 [2024-11-18 14:25:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:09,546 INFO L225 Difference]: With dead ends: 55 [2024-11-18 14:25:09,546 INFO L226 Difference]: Without dead ends: 31 [2024-11-18 14:25:09,547 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 [2024-11-18 14:25:09,547 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:09,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 118 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-18 14:25:09,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-18 14:25:09,559 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) [2024-11-18 14:25:09,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-18 14:25:09,562 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2024-11-18 14:25:09,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:09,562 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-18 14:25:09,563 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) [2024-11-18 14:25:09,563 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-18 14:25:09,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-18 14:25:09,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:09,566 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] [2024-11-18 14:25:09,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 14:25:09,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:09,767 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:09,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2024-11-18 14:25:09,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:09,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164203662] [2024-11-18 14:25:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:09,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:09,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:09,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164203662] [2024-11-18 14:25:09,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164203662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:09,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401883922] [2024-11-18 14:25:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:09,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:09,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:09,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:09,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 14:25:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:09,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:25:09,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:09,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 14:25:10,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401883922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:10,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:10,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-18 14:25:10,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146503614] [2024-11-18 14:25:10,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:10,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 14:25:10,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 14:25:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:25:10,181 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) [2024-11-18 14:25:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:10,312 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-18 14:25:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 14:25:10,313 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 [2024-11-18 14:25:10,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:10,314 INFO L225 Difference]: With dead ends: 40 [2024-11-18 14:25:10,314 INFO L226 Difference]: Without dead ends: 36 [2024-11-18 14:25:10,315 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 [2024-11-18 14:25:10,315 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:10,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-18 14:25:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-18 14:25:10,326 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) [2024-11-18 14:25:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2024-11-18 14:25:10,329 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 24 [2024-11-18 14:25:10,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:10,331 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2024-11-18 14:25:10,332 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) [2024-11-18 14:25:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2024-11-18 14:25:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-18 14:25:10,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:10,333 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] [2024-11-18 14:25:10,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 14:25:10,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 14:25:10,534 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:10,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2024-11-18 14:25:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:10,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638258091] [2024-11-18 14:25:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:10,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:25:10,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:10,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638258091] [2024-11-18 14:25:10,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638258091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:10,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407108416] [2024-11-18 14:25:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:10,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:10,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:10,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:10,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 14:25:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:10,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:25:10,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 14:25:10,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:25:11,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407108416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:11,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:11,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 14 [2024-11-18 14:25:11,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92407715] [2024-11-18 14:25:11,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:11,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 14:25:11,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:11,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 14:25:11,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:25:11,099 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) [2024-11-18 14:25:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:11,254 INFO L93 Difference]: Finished difference Result 69 states and 100 transitions. [2024-11-18 14:25:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:25:11,255 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 [2024-11-18 14:25:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:11,256 INFO L225 Difference]: With dead ends: 69 [2024-11-18 14:25:11,257 INFO L226 Difference]: Without dead ends: 38 [2024-11-18 14:25:11,257 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 [2024-11-18 14:25:11,258 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:11,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 146 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:11,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-18 14:25:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-18 14:25:11,265 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) [2024-11-18 14:25:11,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-18 14:25:11,266 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 36 [2024-11-18 14:25:11,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:11,266 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-18 14:25:11,266 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) [2024-11-18 14:25:11,267 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2024-11-18 14:25:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-18 14:25:11,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:11,268 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] [2024-11-18 14:25:11,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 14:25:11,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:11,473 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:11,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:11,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2024-11-18 14:25:11,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:11,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51308764] [2024-11-18 14:25:11,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:11,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-18 14:25:11,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:11,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51308764] [2024-11-18 14:25:11,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51308764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:11,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74156699] [2024-11-18 14:25:11,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:11,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:11,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:11,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:11,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 14:25:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:11,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:25:11,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 14:25:11,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 14:25:12,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74156699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:12,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:12,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2024-11-18 14:25:12,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339600156] [2024-11-18 14:25:12,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:12,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:25:12,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:12,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:25:12,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:25:12,095 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) [2024-11-18 14:25:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:12,493 INFO L93 Difference]: Finished difference Result 101 states and 161 transitions. [2024-11-18 14:25:12,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 14:25:12,494 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 [2024-11-18 14:25:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:12,495 INFO L225 Difference]: With dead ends: 101 [2024-11-18 14:25:12,495 INFO L226 Difference]: Without dead ends: 68 [2024-11-18 14:25:12,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-18 14:25:12,497 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:12,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 303 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:25:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-18 14:25:12,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2024-11-18 14:25:12,508 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) [2024-11-18 14:25:12,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 86 transitions. [2024-11-18 14:25:12,510 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 86 transitions. Word has length 37 [2024-11-18 14:25:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:12,510 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 86 transitions. [2024-11-18 14:25:12,510 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) [2024-11-18 14:25:12,510 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 86 transitions. [2024-11-18 14:25:12,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-18 14:25:12,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:12,513 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] [2024-11-18 14:25:12,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 14:25:12,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:12,714 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:12,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:12,715 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2024-11-18 14:25:12,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:12,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390942784] [2024-11-18 14:25:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:12,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 14:25:12,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:12,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390942784] [2024-11-18 14:25:12,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390942784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:12,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667294973] [2024-11-18 14:25:12,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:12,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:12,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:12,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:12,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 14:25:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:12,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:25:12,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 14:25:12,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-18 14:25:13,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667294973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:13,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:13,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 17 [2024-11-18 14:25:13,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718672337] [2024-11-18 14:25:13,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:13,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:25:13,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:13,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:25:13,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:25:13,444 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) [2024-11-18 14:25:13,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:13,636 INFO L93 Difference]: Finished difference Result 102 states and 193 transitions. [2024-11-18 14:25:13,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:25:13,637 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 [2024-11-18 14:25:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:13,640 INFO L225 Difference]: With dead ends: 102 [2024-11-18 14:25:13,640 INFO L226 Difference]: Without dead ends: 98 [2024-11-18 14:25:13,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:25:13,642 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:13,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 164 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-18 14:25:13,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2024-11-18 14:25:13,660 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) [2024-11-18 14:25:13,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 106 transitions. [2024-11-18 14:25:13,661 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 106 transitions. Word has length 51 [2024-11-18 14:25:13,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:13,662 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 106 transitions. [2024-11-18 14:25:13,662 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) [2024-11-18 14:25:13,662 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 106 transitions. [2024-11-18 14:25:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 14:25:13,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:13,670 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:13,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:13,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:13,871 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:13,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2024-11-18 14:25:13,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:13,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461293301] [2024-11-18 14:25:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:13,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-18 14:25:14,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461293301] [2024-11-18 14:25:14,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461293301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:14,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108585089] [2024-11-18 14:25:14,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:14,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:14,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:14,119 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:14,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 14:25:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:14,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:25:14,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-18 14:25:14,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 102 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 14:25:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108585089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:15,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 22 [2024-11-18 14:25:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828872136] [2024-11-18 14:25:15,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:15,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-18 14:25:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-18 14:25:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2024-11-18 14:25:15,112 INFO L87 Difference]: Start difference. First operand 64 states and 106 transitions. Second operand has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 22 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 10 states have call predecessors, (26), 17 states have call successors, (26) [2024-11-18 14:25:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:15,695 INFO L93 Difference]: Finished difference Result 177 states and 369 transitions. [2024-11-18 14:25:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-18 14:25:15,696 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 22 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 10 states have call predecessors, (26), 17 states have call successors, (26) Word has length 93 [2024-11-18 14:25:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:15,699 INFO L225 Difference]: With dead ends: 177 [2024-11-18 14:25:15,701 INFO L226 Difference]: Without dead ends: 104 [2024-11-18 14:25:15,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=260, Invalid=1222, Unknown=0, NotChecked=0, Total=1482 [2024-11-18 14:25:15,707 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 76 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:15,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 380 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:25:15,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-18 14:25:15,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2024-11-18 14:25:15,733 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) [2024-11-18 14:25:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 132 transitions. [2024-11-18 14:25:15,738 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 132 transitions. Word has length 93 [2024-11-18 14:25:15,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:15,738 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 132 transitions. [2024-11-18 14:25:15,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 22 states have internal predecessors, (75), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 10 states have call predecessors, (26), 17 states have call successors, (26) [2024-11-18 14:25:15,738 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 132 transitions. [2024-11-18 14:25:15,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-18 14:25:15,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:15,746 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 12, 9, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:15,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 14:25:15,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:15,946 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:15,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:15,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2132762695, now seen corresponding path program 2 times [2024-11-18 14:25:15,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:15,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14064253] [2024-11-18 14:25:15,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:15,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:15,993 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:15,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 52 proven. 230 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2024-11-18 14:25:16,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:16,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14064253] [2024-11-18 14:25:16,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14064253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:16,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351134709] [2024-11-18 14:25:16,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:16,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:16,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:16,252 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:16,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 14:25:16,365 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:16,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:16,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:25:16,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 52 proven. 230 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2024-11-18 14:25:16,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 52 proven. 238 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2024-11-18 14:25:17,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351134709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:17,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:17,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 13] total 15 [2024-11-18 14:25:17,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242138829] [2024-11-18 14:25:17,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:17,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 14:25:17,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:17,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 14:25:17,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:25:17,274 INFO L87 Difference]: Start difference. First operand 93 states and 132 transitions. Second operand has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-18 14:25:17,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:17,436 INFO L93 Difference]: Finished difference Result 130 states and 207 transitions. [2024-11-18 14:25:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:25:17,436 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) Word has length 187 [2024-11-18 14:25:17,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:17,438 INFO L225 Difference]: With dead ends: 130 [2024-11-18 14:25:17,438 INFO L226 Difference]: Without dead ends: 126 [2024-11-18 14:25:17,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 366 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:25:17,439 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:17,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 154 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-18 14:25:17,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 105. [2024-11-18 14:25:17,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 71 states have internal predecessors, (80), 19 states have call successors, (19), 8 states have call predecessors, (19), 16 states have return successors, (63), 25 states have call predecessors, (63), 19 states have call successors, (63) [2024-11-18 14:25:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 162 transitions. [2024-11-18 14:25:17,459 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 162 transitions. Word has length 187 [2024-11-18 14:25:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:17,460 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 162 transitions. [2024-11-18 14:25:17,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 11 states have call successors, (16), 1 states have call predecessors, (16), 6 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-18 14:25:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 162 transitions. [2024-11-18 14:25:17,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 14:25:17,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:17,463 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 8, 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] [2024-11-18 14:25:17,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 14:25:17,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:17,667 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:17,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:17,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2015242506, now seen corresponding path program 3 times [2024-11-18 14:25:17,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:17,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4038600] [2024-11-18 14:25:17,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:25:17,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:17,699 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-18 14:25:17,699 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:17,826 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 70 proven. 103 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2024-11-18 14:25:17,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:17,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4038600] [2024-11-18 14:25:17,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4038600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:17,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074756577] [2024-11-18 14:25:17,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:25:17,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:17,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:17,829 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:17,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 14:25:17,925 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-18 14:25:17,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:17,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:25:17,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 70 proven. 109 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2024-11-18 14:25:17,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 70 proven. 114 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-18 14:25:18,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074756577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:18,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:18,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 14 [2024-11-18 14:25:18,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722118736] [2024-11-18 14:25:18,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:18,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 14:25:18,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:18,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 14:25:18,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-11-18 14:25:18,531 INFO L87 Difference]: Start difference. First operand 105 states and 162 transitions. Second operand has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-18 14:25:18,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:18,640 INFO L93 Difference]: Finished difference Result 125 states and 209 transitions. [2024-11-18 14:25:18,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-18 14:25:18,641 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) Word has length 147 [2024-11-18 14:25:18,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:18,642 INFO L225 Difference]: With dead ends: 125 [2024-11-18 14:25:18,643 INFO L226 Difference]: Without dead ends: 121 [2024-11-18 14:25:18,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 286 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:25:18,644 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:18,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 101 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:18,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-18 14:25:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 105. [2024-11-18 14:25:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 71 states have internal predecessors, (80), 19 states have call successors, (19), 8 states have call predecessors, (19), 16 states have return successors, (63), 25 states have call predecessors, (63), 19 states have call successors, (63) [2024-11-18 14:25:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 162 transitions. [2024-11-18 14:25:18,674 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 162 transitions. Word has length 147 [2024-11-18 14:25:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:18,674 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 162 transitions. [2024-11-18 14:25:18,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 14 states have internal predecessors, (54), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-18 14:25:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 162 transitions. [2024-11-18 14:25:18,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-18 14:25:18,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:18,677 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:18,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:18,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 14:25:18,883 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:18,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:18,884 INFO L85 PathProgramCache]: Analyzing trace with hash -31484793, now seen corresponding path program 4 times [2024-11-18 14:25:18,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:18,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017021108] [2024-11-18 14:25:18,884 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:25:18,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:18,898 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:25:18,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 53 proven. 104 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-18 14:25:18,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017021108] [2024-11-18 14:25:18,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017021108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935992751] [2024-11-18 14:25:18,995 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:25:18,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:18,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:18,997 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:18,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 14:25:19,082 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:25:19,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:19,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:25:19,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 53 proven. 104 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2024-11-18 14:25:19,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 53 proven. 109 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-18 14:25:19,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935992751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:19,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:19,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 13 [2024-11-18 14:25:19,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043967306] [2024-11-18 14:25:19,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:19,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 14:25:19,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:19,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 14:25:19,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-18 14:25:19,660 INFO L87 Difference]: Start difference. First operand 105 states and 162 transitions. Second operand has 13 states, 12 states have (on average 4.25) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (15), 7 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-18 14:25:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:19,773 INFO L93 Difference]: Finished difference Result 135 states and 241 transitions. [2024-11-18 14:25:19,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 14:25:19,774 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.25) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (15), 7 states have call predecessors, (15), 9 states have call successors, (15) Word has length 134 [2024-11-18 14:25:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:19,775 INFO L225 Difference]: With dead ends: 135 [2024-11-18 14:25:19,776 INFO L226 Difference]: Without dead ends: 131 [2024-11-18 14:25:19,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 261 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-18 14:25:19,776 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 25 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:19,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 124 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-18 14:25:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2024-11-18 14:25:19,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 71 states have internal predecessors, (80), 19 states have call successors, (19), 8 states have call predecessors, (19), 16 states have return successors, (63), 25 states have call predecessors, (63), 19 states have call successors, (63) [2024-11-18 14:25:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 162 transitions. [2024-11-18 14:25:19,791 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 162 transitions. Word has length 134 [2024-11-18 14:25:19,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:19,791 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 162 transitions. [2024-11-18 14:25:19,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.25) internal successors, (51), 13 states have internal predecessors, (51), 9 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (15), 7 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-18 14:25:19,792 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 162 transitions. [2024-11-18 14:25:19,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-18 14:25:19,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:19,794 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:19,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 14:25:19,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:19,995 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:19,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:19,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2022247416, now seen corresponding path program 5 times [2024-11-18 14:25:19,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:19,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460581807] [2024-11-18 14:25:19,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:19,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:20,018 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-18 14:25:20,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 157 proven. 276 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2024-11-18 14:25:20,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:20,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460581807] [2024-11-18 14:25:20,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460581807] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:20,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136177226] [2024-11-18 14:25:20,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:20,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:20,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:20,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:20,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 14:25:20,258 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-18 14:25:20,258 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:20,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:25:20,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 612 proven. 126 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2024-11-18 14:25:20,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 157 proven. 279 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2024-11-18 14:25:21,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136177226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:21,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:21,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 19 [2024-11-18 14:25:21,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139155122] [2024-11-18 14:25:21,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:21,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 14:25:21,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:21,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 14:25:21,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:25:21,225 INFO L87 Difference]: Start difference. First operand 105 states and 162 transitions. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 13 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (27), 11 states have call predecessors, (27), 13 states have call successors, (27) [2024-11-18 14:25:21,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:21,660 INFO L93 Difference]: Finished difference Result 267 states and 514 transitions. [2024-11-18 14:25:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 14:25:21,661 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 13 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (27), 11 states have call predecessors, (27), 13 states have call successors, (27) Word has length 201 [2024-11-18 14:25:21,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:21,663 INFO L225 Difference]: With dead ends: 267 [2024-11-18 14:25:21,664 INFO L226 Difference]: Without dead ends: 164 [2024-11-18 14:25:21,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 391 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 14:25:21,666 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 54 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:21,666 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 341 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:25:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-18 14:25:21,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 151. [2024-11-18 14:25:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.1568627450980393) internal successors, (118), 99 states have internal predecessors, (118), 27 states have call successors, (27), 15 states have call predecessors, (27), 21 states have return successors, (100), 36 states have call predecessors, (100), 27 states have call successors, (100) [2024-11-18 14:25:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 245 transitions. [2024-11-18 14:25:21,694 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 245 transitions. Word has length 201 [2024-11-18 14:25:21,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:21,695 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 245 transitions. [2024-11-18 14:25:21,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 13 states have call successors, (25), 2 states have call predecessors, (25), 8 states have return successors, (27), 11 states have call predecessors, (27), 13 states have call successors, (27) [2024-11-18 14:25:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 245 transitions. [2024-11-18 14:25:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-18 14:25:21,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:21,700 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 12, 11, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:21,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-18 14:25:21,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-18 14:25:21,901 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:21,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash -278535210, now seen corresponding path program 6 times [2024-11-18 14:25:21,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:21,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227373936] [2024-11-18 14:25:21,902 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:21,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:21,938 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 14:25:21,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 303 proven. 26 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2024-11-18 14:25:22,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:22,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227373936] [2024-11-18 14:25:22,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227373936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:22,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762912899] [2024-11-18 14:25:22,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:22,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:22,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:22,285 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:22,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-18 14:25:22,404 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-18 14:25:22,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:22,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 14:25:22,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 337 proven. 33 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-18 14:25:22,498 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 337 proven. 35 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2024-11-18 14:25:23,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762912899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:23,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:23,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 13] total 24 [2024-11-18 14:25:23,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885793644] [2024-11-18 14:25:23,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:23,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-18 14:25:23,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:23,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-18 14:25:23,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2024-11-18 14:25:23,412 INFO L87 Difference]: Start difference. First operand 151 states and 245 transitions. Second operand has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 13 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-18 14:25:23,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:23,753 INFO L93 Difference]: Finished difference Result 316 states and 547 transitions. [2024-11-18 14:25:23,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 14:25:23,754 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 13 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) Word has length 201 [2024-11-18 14:25:23,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:23,756 INFO L225 Difference]: With dead ends: 316 [2024-11-18 14:25:23,756 INFO L226 Difference]: Without dead ends: 175 [2024-11-18 14:25:23,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 388 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 14:25:23,758 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:23,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 290 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:25:23,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-18 14:25:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 159. [2024-11-18 14:25:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 106 states have (on average 1.1415094339622642) internal successors, (121), 104 states have internal predecessors, (121), 29 states have call successors, (29), 14 states have call predecessors, (29), 23 states have return successors, (118), 40 states have call predecessors, (118), 29 states have call successors, (118) [2024-11-18 14:25:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 268 transitions. [2024-11-18 14:25:23,777 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 268 transitions. Word has length 201 [2024-11-18 14:25:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:23,778 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 268 transitions. [2024-11-18 14:25:23,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.217391304347826) internal successors, (74), 24 states have internal predecessors, (74), 13 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-18 14:25:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 268 transitions. [2024-11-18 14:25:23,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-18 14:25:23,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:23,782 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 13, 12, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:23,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-18 14:25:23,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-18 14:25:23,990 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:23,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:23,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1667993212, now seen corresponding path program 7 times [2024-11-18 14:25:23,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:23,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833242878] [2024-11-18 14:25:23,990 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:25:23,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:24,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 249 proven. 144 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2024-11-18 14:25:24,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:24,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833242878] [2024-11-18 14:25:24,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833242878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:24,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593659366] [2024-11-18 14:25:24,323 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:25:24,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:24,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:24,325 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:24,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-18 14:25:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:24,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:25:24,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 274 proven. 160 refuted. 0 times theorem prover too weak. 958 trivial. 0 not checked. [2024-11-18 14:25:24,528 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1392 backedges. 274 proven. 174 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2024-11-18 14:25:25,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593659366] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:25,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:25,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-18 14:25:25,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708416481] [2024-11-18 14:25:25,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:25,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 14:25:25,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 14:25:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:25:25,848 INFO L87 Difference]: Start difference. First operand 159 states and 268 transitions. Second operand has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) [2024-11-18 14:25:26,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:26,030 INFO L93 Difference]: Finished difference Result 177 states and 291 transitions. [2024-11-18 14:25:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:25:26,030 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) Word has length 227 [2024-11-18 14:25:26,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:26,034 INFO L225 Difference]: With dead ends: 177 [2024-11-18 14:25:26,034 INFO L226 Difference]: Without dead ends: 171 [2024-11-18 14:25:26,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 442 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:25:26,035 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 27 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:26,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 261 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:26,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-18 14:25:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 163. [2024-11-18 14:25:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 106 states have internal predecessors, (124), 29 states have call successors, (29), 16 states have call predecessors, (29), 23 states have return successors, (118), 40 states have call predecessors, (118), 29 states have call successors, (118) [2024-11-18 14:25:26,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 271 transitions. [2024-11-18 14:25:26,053 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 271 transitions. Word has length 227 [2024-11-18 14:25:26,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:26,056 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 271 transitions. [2024-11-18 14:25:26,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) [2024-11-18 14:25:26,056 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 271 transitions. [2024-11-18 14:25:26,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-18 14:25:26,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:26,058 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:26,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-18 14:25:26,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 14:25:26,259 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:26,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1967848152, now seen corresponding path program 8 times [2024-11-18 14:25:26,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:26,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645879675] [2024-11-18 14:25:26,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:26,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:26,279 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:26,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 111 proven. 27 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2024-11-18 14:25:26,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645879675] [2024-11-18 14:25:26,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645879675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797868922] [2024-11-18 14:25:26,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:25:26,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:26,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:26,390 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:26,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-18 14:25:26,523 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:25:26,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:26,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:25:26,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 141 proven. 34 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2024-11-18 14:25:26,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 143 proven. 37 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-18 14:25:27,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797868922] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:27,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:27,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 15 [2024-11-18 14:25:27,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708178470] [2024-11-18 14:25:27,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:27,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-18 14:25:27,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:27,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-18 14:25:27,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:25:27,139 INFO L87 Difference]: Start difference. First operand 163 states and 271 transitions. Second operand has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-18 14:25:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:27,290 INFO L93 Difference]: Finished difference Result 183 states and 306 transitions. [2024-11-18 14:25:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:25:27,291 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) Word has length 147 [2024-11-18 14:25:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:27,293 INFO L225 Difference]: With dead ends: 183 [2024-11-18 14:25:27,293 INFO L226 Difference]: Without dead ends: 179 [2024-11-18 14:25:27,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 283 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-11-18 14:25:27,295 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:27,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 119 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-18 14:25:27,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 163. [2024-11-18 14:25:27,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 106 states have internal predecessors, (124), 29 states have call successors, (29), 16 states have call predecessors, (29), 23 states have return successors, (118), 40 states have call predecessors, (118), 29 states have call successors, (118) [2024-11-18 14:25:27,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 271 transitions. [2024-11-18 14:25:27,311 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 271 transitions. Word has length 147 [2024-11-18 14:25:27,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:27,312 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 271 transitions. [2024-11-18 14:25:27,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 9 states have call successors, (15), 1 states have call predecessors, (15), 6 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2024-11-18 14:25:27,312 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 271 transitions. [2024-11-18 14:25:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-18 14:25:27,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:27,315 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:27,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-18 14:25:27,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-18 14:25:27,519 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:27,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:27,519 INFO L85 PathProgramCache]: Analyzing trace with hash 521886258, now seen corresponding path program 9 times [2024-11-18 14:25:27,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:27,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835350600] [2024-11-18 14:25:27,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:25:27,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:27,552 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-18 14:25:27,556 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-18 14:25:28,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:28,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835350600] [2024-11-18 14:25:28,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835350600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:28,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855380038] [2024-11-18 14:25:28,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:25:28,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:28,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:28,690 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:28,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-18 14:25:28,838 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-18 14:25:28,838 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:28,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-18 14:25:28,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-18 14:25:29,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 0 proven. 267 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2024-11-18 14:25:29,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855380038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:29,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:29,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 36 [2024-11-18 14:25:29,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729966897] [2024-11-18 14:25:29,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:29,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-18 14:25:29,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:29,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-18 14:25:29,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1175, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 14:25:29,898 INFO L87 Difference]: Start difference. First operand 163 states and 271 transitions. Second operand has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) [2024-11-18 14:25:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:30,441 INFO L93 Difference]: Finished difference Result 274 states and 622 transitions. [2024-11-18 14:25:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-18 14:25:30,442 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) Word has length 174 [2024-11-18 14:25:30,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:30,448 INFO L225 Difference]: With dead ends: 274 [2024-11-18 14:25:30,448 INFO L226 Difference]: Without dead ends: 270 [2024-11-18 14:25:30,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 14:25:30,450 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:30,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1793 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 14:25:30,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-18 14:25:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 209. [2024-11-18 14:25:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 138 states have (on average 1.1014492753623188) internal successors, (152), 134 states have internal predecessors, (152), 37 states have call successors, (37), 16 states have call predecessors, (37), 33 states have return successors, (229), 58 states have call predecessors, (229), 37 states have call successors, (229) [2024-11-18 14:25:30,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 418 transitions. [2024-11-18 14:25:30,496 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 418 transitions. Word has length 174 [2024-11-18 14:25:30,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:30,497 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 418 transitions. [2024-11-18 14:25:30,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (23), 23 states have call predecessors, (23), 7 states have call successors, (23) [2024-11-18 14:25:30,497 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 418 transitions. [2024-11-18 14:25:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-18 14:25:30,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:30,502 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:30,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-18 14:25:30,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:30,703 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:30,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:30,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1602657640, now seen corresponding path program 1 times [2024-11-18 14:25:30,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:30,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119002856] [2024-11-18 14:25:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:30,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:30,947 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 69 proven. 247 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2024-11-18 14:25:30,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:30,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119002856] [2024-11-18 14:25:30,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119002856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:30,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053237920] [2024-11-18 14:25:30,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:25:30,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:30,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:30,949 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:30,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-18 14:25:31,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:25:31,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:25:31,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 69 proven. 247 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2024-11-18 14:25:31,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 73 proven. 257 refuted. 0 times theorem prover too weak. 487 trivial. 0 not checked. [2024-11-18 14:25:32,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053237920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:32,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:32,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 15] total 17 [2024-11-18 14:25:32,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278086849] [2024-11-18 14:25:32,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:32,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 14:25:32,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:32,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 14:25:32,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-18 14:25:32,356 INFO L87 Difference]: Start difference. First operand 209 states and 418 transitions. Second operand has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 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) [2024-11-18 14:25:32,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:32,546 INFO L93 Difference]: Finished difference Result 256 states and 607 transitions. [2024-11-18 14:25:32,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-18 14:25:32,547 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 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 177 [2024-11-18 14:25:32,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:32,549 INFO L225 Difference]: With dead ends: 256 [2024-11-18 14:25:32,549 INFO L226 Difference]: Without dead ends: 157 [2024-11-18 14:25:32,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 345 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:25:32,552 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 22 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:32,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 273 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:25:32,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-18 14:25:32,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2024-11-18 14:25:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 102 states have (on average 1.1176470588235294) internal successors, (114), 100 states have internal predecessors, (114), 25 states have call successors, (25), 14 states have call predecessors, (25), 23 states have return successors, (71), 36 states have call predecessors, (71), 25 states have call successors, (71) [2024-11-18 14:25:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 210 transitions. [2024-11-18 14:25:32,569 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 210 transitions. Word has length 177 [2024-11-18 14:25:32,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:32,569 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 210 transitions. [2024-11-18 14:25:32,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.875) internal successors, (62), 17 states have internal predecessors, (62), 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) [2024-11-18 14:25:32,569 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 210 transitions. [2024-11-18 14:25:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-18 14:25:32,571 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:32,571 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 15, 15, 13, 13, 9, 9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:32,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:32,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-18 14:25:32,775 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:32,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:32,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1414945584, now seen corresponding path program 10 times [2024-11-18 14:25:32,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:32,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544371025] [2024-11-18 14:25:32,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:25:32,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:32,794 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:25:32,795 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 106 proven. 288 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2024-11-18 14:25:33,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:33,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544371025] [2024-11-18 14:25:33,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544371025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:33,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627084089] [2024-11-18 14:25:33,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:25:33,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:33,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:33,149 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 14:25:33,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-18 14:25:33,309 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:25:33,309 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:33,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-18 14:25:33,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:33,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 115 proven. 326 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2024-11-18 14:25:33,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 117 proven. 338 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2024-11-18 14:25:34,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627084089] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:34,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:34,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-18 14:25:34,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9528954] [2024-11-18 14:25:34,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:34,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-18 14:25:34,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:34,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-18 14:25:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-18 14:25:34,621 INFO L87 Difference]: Start difference. First operand 151 states and 210 transitions. Second operand has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) [2024-11-18 14:25:34,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:34,861 INFO L93 Difference]: Finished difference Result 168 states and 228 transitions. [2024-11-18 14:25:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-18 14:25:34,862 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) Word has length 228 [2024-11-18 14:25:34,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:34,863 INFO L225 Difference]: With dead ends: 168 [2024-11-18 14:25:34,863 INFO L226 Difference]: Without dead ends: 123 [2024-11-18 14:25:34,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 444 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:25:34,865 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:34,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 340 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 14:25:34,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-18 14:25:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2024-11-18 14:25:34,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 83 states have (on average 1.1204819277108433) internal successors, (93), 81 states have internal predecessors, (93), 20 states have call successors, (20), 13 states have call predecessors, (20), 17 states have return successors, (38), 26 states have call predecessors, (38), 20 states have call successors, (38) [2024-11-18 14:25:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2024-11-18 14:25:34,877 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 228 [2024-11-18 14:25:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:34,877 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2024-11-18 14:25:34,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 14 states have call successors, (20), 1 states have call predecessors, (20), 7 states have return successors, (23), 10 states have call predecessors, (23), 14 states have call successors, (23) [2024-11-18 14:25:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2024-11-18 14:25:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 14:25:34,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:34,879 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:34,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-18 14:25:35,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-18 14:25:35,083 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:35,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:35,083 INFO L85 PathProgramCache]: Analyzing trace with hash -257127670, now seen corresponding path program 11 times [2024-11-18 14:25:35,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:35,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746913544] [2024-11-18 14:25:35,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:35,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:35,103 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-18 14:25:35,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 183 proven. 264 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-18 14:25:35,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:35,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746913544] [2024-11-18 14:25:35,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746913544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:35,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50264697] [2024-11-18 14:25:35,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:25:35,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:35,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:35,439 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) [2024-11-18 14:25:35,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-18 14:25:35,607 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-18 14:25:35,608 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:35,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-18 14:25:35,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 173 proven. 269 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2024-11-18 14:25:35,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 175 proven. 281 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2024-11-18 14:25:37,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50264697] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:37,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:37,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 21] total 28 [2024-11-18 14:25:37,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531416680] [2024-11-18 14:25:37,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:37,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 14:25:37,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:37,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 14:25:37,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:25:37,084 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 19 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2024-11-18 14:25:37,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:37,489 INFO L93 Difference]: Finished difference Result 254 states and 339 transitions. [2024-11-18 14:25:37,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 14:25:37,490 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 19 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) Word has length 175 [2024-11-18 14:25:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:37,491 INFO L225 Difference]: With dead ends: 254 [2024-11-18 14:25:37,492 INFO L226 Difference]: Without dead ends: 141 [2024-11-18 14:25:37,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 334 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=291, Invalid=1431, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 14:25:37,494 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 87 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:37,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 378 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 14:25:37,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-18 14:25:37,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2024-11-18 14:25:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 82 states have internal predecessors, (95), 20 states have call successors, (20), 16 states have call predecessors, (20), 15 states have return successors, (29), 22 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-18 14:25:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2024-11-18 14:25:37,506 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 175 [2024-11-18 14:25:37,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:37,506 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2024-11-18 14:25:37,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 19 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (29), 12 states have call predecessors, (29), 19 states have call successors, (29) [2024-11-18 14:25:37,506 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2024-11-18 14:25:37,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-18 14:25:37,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:25:37,507 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:37,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:37,711 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 [2024-11-18 14:25:37,712 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:25:37,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:25:37,712 INFO L85 PathProgramCache]: Analyzing trace with hash 357728110, now seen corresponding path program 12 times [2024-11-18 14:25:37,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:25:37,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024368012] [2024-11-18 14:25:37,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:37,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:25:37,740 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 14:25:37,740 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2024-11-18 14:25:37,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:25:37,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024368012] [2024-11-18 14:25:37,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024368012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:25:37,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819047210] [2024-11-18 14:25:37,801 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:25:37,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:25:37,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:25:37,803 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) [2024-11-18 14:25:37,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-18 14:25:37,964 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-18 14:25:37,964 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:25:37,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:25:37,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:25:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2024-11-18 14:25:38,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:25:38,334 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2024-11-18 14:25:38,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819047210] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:25:38,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:25:38,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-18 14:25:38,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581754500] [2024-11-18 14:25:38,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:25:38,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-18 14:25:38,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:25:38,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-18 14:25:38,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-18 14:25:38,337 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:25:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:25:38,407 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2024-11-18 14:25:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:25:38,408 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 175 [2024-11-18 14:25:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:25:38,408 INFO L225 Difference]: With dead ends: 124 [2024-11-18 14:25:38,408 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 14:25:38,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 343 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-11-18 14:25:38,409 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:25:38,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 136 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:25:38,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 14:25:38,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 14:25:38,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 14:25:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 14:25:38,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 175 [2024-11-18 14:25:38,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:25:38,410 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 14:25:38,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 14:25:38,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 14:25:38,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 14:25:38,413 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 14:25:38,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-18 14:25:38,614 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 [2024-11-18 14:25:38,617 INFO L407 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:25:38,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 14:26:12,231 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 14:26:12,270 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-18 14:26:12,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:26:12 BoogieIcfgContainer [2024-11-18 14:26:12,272 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 14:26:12,272 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 14:26:12,273 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 14:26:12,273 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 14:26:12,273 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:25:07" (3/4) ... [2024-11-18 14:26:12,275 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 14:26:12,279 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-11-18 14:26:12,279 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-11-18 14:26:12,282 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-18 14:26:12,282 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 14:26:12,282 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 14:26:12,282 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 14:26:12,371 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 14:26:12,372 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 14:26:12,372 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 14:26:12,372 INFO L158 Benchmark]: Toolchain (without parser) took 64994.28ms. Allocated memory was 142.6MB in the beginning and 752.9MB in the end (delta: 610.3MB). Free memory was 73.0MB in the beginning and 653.2MB in the end (delta: -580.2MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2024-11-18 14:26:12,372 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 14:26:12,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.00ms. Allocated memory is still 142.6MB. Free memory was 72.7MB in the beginning and 60.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 14:26:12,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.61ms. Allocated memory is still 142.6MB. Free memory was 60.3MB in the beginning and 59.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 14:26:12,373 INFO L158 Benchmark]: Boogie Preprocessor took 29.07ms. Allocated memory is still 142.6MB. Free memory was 59.1MB in the beginning and 57.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 14:26:12,373 INFO L158 Benchmark]: RCFGBuilder took 249.11ms. Allocated memory is still 142.6MB. Free memory was 57.3MB in the beginning and 46.5MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 14:26:12,374 INFO L158 Benchmark]: TraceAbstraction took 64311.20ms. Allocated memory was 142.6MB in the beginning and 752.9MB in the end (delta: 610.3MB). Free memory was 45.8MB in the beginning and 658.5MB in the end (delta: -612.7MB). Peak memory consumption was 398.2MB. Max. memory is 16.1GB. [2024-11-18 14:26:12,374 INFO L158 Benchmark]: Witness Printer took 99.26ms. Allocated memory is still 752.9MB. Free memory was 658.5MB in the beginning and 653.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 14:26:12,376 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.00ms. Allocated memory is still 142.6MB. Free memory was 72.7MB in the beginning and 60.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.61ms. Allocated memory is still 142.6MB. Free memory was 60.3MB in the beginning and 59.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.07ms. Allocated memory is still 142.6MB. Free memory was 59.1MB in the beginning and 57.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 249.11ms. Allocated memory is still 142.6MB. Free memory was 57.3MB in the beginning and 46.5MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 64311.20ms. Allocated memory was 142.6MB in the beginning and 752.9MB in the end (delta: 610.3MB). Free memory was 45.8MB in the beginning and 658.5MB in the end (delta: -612.7MB). Peak memory consumption was 398.2MB. Max. memory is 16.1GB. * Witness Printer took 99.26ms. Allocated memory is still 752.9MB. Free memory was 658.5MB in the beginning and 653.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 41]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.6s, OverallIterations: 20, TraceHistogramMax: 18, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.1s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 701 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 595 mSDsluCounter, 5721 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5139 mSDsCounter, 555 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5435 IncrementalHoareTripleChecker+Invalid, 5990 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 555 mSolverCounterUnsat, 582 mSDtfsCounter, 5435 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5229 GetRequests, 4728 SyntacticMatches, 88 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2128 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=16, InterpolantAutomatonStates: 281, 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, 20 MinimizatonAttempts, 272 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 18.9s InterpolantComputationTime, 4895 NumberOfCodeBlocks, 4095 NumberOfCodeBlocksAsserted, 132 NumberOfCheckSat, 7276 ConstructedInterpolants, 0 QuantifiedInterpolants, 12103 SizeOfPredicates, 60 NumberOfNonLiveVariables, 4747 ConjunctsInSsa, 289 ConjunctsInUnsatCore, 56 InterpolantComputations, 2 PerfectInterpolantSequences, 26278/32679 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 19]: Procedure Contract for fibo2 Derived contract for procedure fibo2. Ensures: (((((5 == \result) || (5 != n)) && (((((2 == \result) && (3 == n)) || (n < 2)) || ((3 == \result) && (n == 4))) || (4 < n))) && ((((\result == 1) && (n == 1)) || (\result == 0)) || (2 < n))) && ((((\result == 1) && (n == 1)) || (2 < n)) || (n < 1))) RESULT: Ultimate proved your program to be correct! [2024-11-18 14:26:12,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE