./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_i25_o25-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/id_i25_o25-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 76955366716759eb9478710f6ef46e3de93d252b9c3177ff4beaca56ee5c75a7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 14:26:02,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 14:26:02,989 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 14:26:02,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 14:26:02,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 14:26:03,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 14:26:03,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 14:26:03,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 14:26:03,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 14:26:03,015 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 14:26:03,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 14:26:03,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 14:26:03,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 14:26:03,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 14:26:03,023 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 14:26:03,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 14:26:03,023 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 14:26:03,024 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 14:26:03,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 14:26:03,024 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 14:26:03,024 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 14:26:03,025 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 14:26:03,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 14:26:03,025 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 14:26:03,025 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 14:26:03,026 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 14:26:03,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 14:26:03,026 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 14:26:03,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 14:26:03,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 14:26:03,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 14:26:03,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 14:26:03,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:26:03,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 14:26:03,028 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 14:26:03,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 14:26:03,030 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 14:26:03,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 14:26:03,031 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 14:26:03,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 14:26:03,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 14:26:03,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 14:26:03,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76955366716759eb9478710f6ef46e3de93d252b9c3177ff4beaca56ee5c75a7 [2024-11-18 14:26:03,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 14:26:03,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 14:26:03,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 14:26:03,298 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 14:26:03,298 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 14:26:03,299 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_i25_o25-2.c [2024-11-18 14:26:04,748 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 14:26:04,916 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 14:26:04,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i25_o25-2.c [2024-11-18 14:26:04,929 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47e590403/690fd611bb094bdc8def20f0ad7f6f54/FLAG11800b47b [2024-11-18 14:26:05,317 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47e590403/690fd611bb094bdc8def20f0ad7f6f54 [2024-11-18 14:26:05,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 14:26:05,323 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 14:26:05,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 14:26:05,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 14:26:05,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 14:26:05,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce54c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05, skipping insertion in model container [2024-11-18 14:26:05,335 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,356 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 14:26:05,541 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/id_i25_o25-2.c[454,467] [2024-11-18 14:26:05,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:26:05,553 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 14:26:05,580 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/id_i25_o25-2.c[454,467] [2024-11-18 14:26:05,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 14:26:05,598 INFO L204 MainTranslator]: Completed translation [2024-11-18 14:26:05,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05 WrapperNode [2024-11-18 14:26:05,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 14:26:05,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 14:26:05,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 14:26:05,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 14:26:05,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,663 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-11-18 14:26:05,663 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 14:26:05,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 14:26:05,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 14:26:05,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 14:26:05,677 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,678 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,679 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,688 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 14:26:05,688 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,694 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 14:26:05,695 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 14:26:05,695 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 14:26:05,695 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 14:26:05,696 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (1/1) ... [2024-11-18 14:26:05,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 14:26:05,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:05,722 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 14:26:05,726 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 14:26:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 14:26:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 14:26:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 14:26:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 14:26:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-11-18 14:26:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-11-18 14:26:05,835 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 14:26:05,837 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 14:26:05,944 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-18 14:26:05,945 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 14:26:05,957 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 14:26:05,957 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 14:26:05,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:26:05 BoogieIcfgContainer [2024-11-18 14:26:05,958 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 14:26:05,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 14:26:05,960 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 14:26:05,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 14:26:05,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:26:05" (1/3) ... [2024-11-18 14:26:05,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e89521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:26:05, skipping insertion in model container [2024-11-18 14:26:05,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:26:05" (2/3) ... [2024-11-18 14:26:05,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e89521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:26:05, skipping insertion in model container [2024-11-18 14:26:05,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:26:05" (3/3) ... [2024-11-18 14:26:05,967 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i25_o25-2.c [2024-11-18 14:26:05,983 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 14:26:05,983 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 14:26:06,044 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 14:26:06,054 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;@6f8de7ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 14:26:06,054 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 14:26:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-18 14:26:06,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-18 14:26:06,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:06,066 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:06,067 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:06,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:06,072 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2024-11-18 14:26:06,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:06,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170308232] [2024-11-18 14:26:06,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:26:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:26:06,326 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 14:26:06,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:06,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170308232] [2024-11-18 14:26:06,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170308232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 14:26:06,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 14:26:06,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 14:26:06,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23018791] [2024-11-18 14:26:06,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 14:26:06,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 14:26:06,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:06,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 14:26:06,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 14:26:06,357 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:26:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:06,394 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-18 14:26:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 14:26:06,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-18 14:26:06,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:06,404 INFO L225 Difference]: With dead ends: 25 [2024-11-18 14:26:06,404 INFO L226 Difference]: Without dead ends: 15 [2024-11-18 14:26:06,406 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 14:26:06,412 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:06,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:26:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-18 14:26:06,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-18 14:26:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 14:26:06,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-18 14:26:06,454 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2024-11-18 14:26:06,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:06,455 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-18 14:26:06,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-18 14:26:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-18 14:26:06,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-18 14:26:06,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:06,457 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:06,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 14:26:06,458 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:06,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2024-11-18 14:26:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:06,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802125013] [2024-11-18 14:26:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:26:06,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:26:06,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 14:26:06,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:06,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802125013] [2024-11-18 14:26:06,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802125013] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:06,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874168879] [2024-11-18 14:26:06,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 14:26:06,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:06,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:06,651 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 14:26:06,652 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 14:26:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:26:06,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 14:26:06,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 14:26:06,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:07,059 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 14:26:07,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874168879] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:07,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:07,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2024-11-18 14:26:07,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87821499] [2024-11-18 14:26:07,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:07,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 14:26:07,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:07,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 14:26:07,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-18 14:26:07,064 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 14:26:07,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:07,116 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-18 14:26:07,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 14:26:07,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 16 [2024-11-18 14:26:07,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:07,117 INFO L225 Difference]: With dead ends: 22 [2024-11-18 14:26:07,117 INFO L226 Difference]: Without dead ends: 18 [2024-11-18 14:26:07,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-18 14:26:07,119 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:07,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 32 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:26:07,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-18 14:26:07,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-18 14:26:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-18 14:26:07,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2024-11-18 14:26:07,125 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2024-11-18 14:26:07,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:07,125 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2024-11-18 14:26:07,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-18 14:26:07,125 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2024-11-18 14:26:07,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 14:26:07,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:07,126 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:07,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 14:26:07,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:07,331 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:07,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:07,332 INFO L85 PathProgramCache]: Analyzing trace with hash -41010676, now seen corresponding path program 2 times [2024-11-18 14:26:07,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:07,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310810967] [2024-11-18 14:26:07,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:26:07,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:07,347 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:26:07,347 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 14:26:07,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:07,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310810967] [2024-11-18 14:26:07,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310810967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36143862] [2024-11-18 14:26:07,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:26:07,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:07,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:07,597 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 14:26:07,599 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 14:26:07,638 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:26:07,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:07,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 14:26:07,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 14:26:07,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 14:26:08,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36143862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:08,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:08,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 18 [2024-11-18 14:26:08,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354834885] [2024-11-18 14:26:08,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:08,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 14:26:08,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:08,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 14:26:08,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-18 14:26:08,152 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 18 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 6 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-18 14:26:08,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:08,272 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2024-11-18 14:26:08,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 14:26:08,273 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 6 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 22 [2024-11-18 14:26:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:08,274 INFO L225 Difference]: With dead ends: 25 [2024-11-18 14:26:08,274 INFO L226 Difference]: Without dead ends: 21 [2024-11-18 14:26:08,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2024-11-18 14:26:08,275 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:08,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 82 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:26:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-18 14:26:08,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-18 14:26:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 14:26:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-18 14:26:08,281 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 22 [2024-11-18 14:26:08,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:08,281 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-18 14:26:08,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 6 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-18 14:26:08,282 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-18 14:26:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 14:26:08,282 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:08,283 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:08,300 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 14:26:08,483 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,SelfDestructingSolverStorable2 [2024-11-18 14:26:08,484 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:08,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:08,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1769866774, now seen corresponding path program 3 times [2024-11-18 14:26:08,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:08,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289193639] [2024-11-18 14:26:08,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:26:08,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:08,502 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 14:26:08,503 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-18 14:26:08,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:08,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289193639] [2024-11-18 14:26:08,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289193639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:08,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981123679] [2024-11-18 14:26:08,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:26:08,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:08,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:08,681 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 14:26:08,683 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 14:26:08,727 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-18 14:26:08,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:08,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 14:26:08,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:26:08,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:09,345 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 14:26:09,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981123679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:09,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:09,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2024-11-18 14:26:09,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628837461] [2024-11-18 14:26:09,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:09,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-18 14:26:09,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:09,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-18 14:26:09,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2024-11-18 14:26:09,351 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 20 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 12 states have return successors, (12), 12 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:26:09,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:09,779 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2024-11-18 14:26:09,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:26:09,780 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 20 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 12 states have return successors, (12), 12 states have call predecessors, (12), 4 states have call successors, (12) Word has length 28 [2024-11-18 14:26:09,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:09,781 INFO L225 Difference]: With dead ends: 39 [2024-11-18 14:26:09,781 INFO L226 Difference]: Without dead ends: 33 [2024-11-18 14:26:09,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=291, Invalid=1601, Unknown=0, NotChecked=0, Total=1892 [2024-11-18 14:26:09,783 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 45 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:09,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 89 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:26:09,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-18 14:26:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-18 14:26:09,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 14:26:09,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-18 14:26:09,796 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2024-11-18 14:26:09,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:09,797 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-18 14:26:09,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 20 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 12 states have return successors, (12), 12 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-18 14:26:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-18 14:26:09,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-18 14:26:09,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:09,800 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:09,816 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 14:26:10,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:10,001 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:10,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 4 times [2024-11-18 14:26:10,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:10,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316774519] [2024-11-18 14:26:10,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:26:10,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:10,019 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:26:10,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 11 proven. 90 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-18 14:26:10,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:10,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316774519] [2024-11-18 14:26:10,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316774519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:10,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181404978] [2024-11-18 14:26:10,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:26:10,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:10,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:10,323 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 14:26:10,324 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 14:26:10,390 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:26:10,390 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:10,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-18 14:26:10,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-18 14:26:10,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-18 14:26:12,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181404978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:12,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:12,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 19] total 26 [2024-11-18 14:26:12,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478710084] [2024-11-18 14:26:12,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:12,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-18 14:26:12,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:12,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-18 14:26:12,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2024-11-18 14:26:12,834 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 26 states, 23 states have (on average 2.130434782608696) internal successors, (49), 26 states have internal predecessors, (49), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 10 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-18 14:26:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:13,041 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2024-11-18 14:26:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 14:26:13,041 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.130434782608696) internal successors, (49), 26 states have internal predecessors, (49), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 10 states have call predecessors, (19), 13 states have call successors, (19) Word has length 52 [2024-11-18 14:26:13,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:13,044 INFO L225 Difference]: With dead ends: 52 [2024-11-18 14:26:13,044 INFO L226 Difference]: Without dead ends: 48 [2024-11-18 14:26:13,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 89 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=880, Unknown=0, NotChecked=0, Total=1260 [2024-11-18 14:26:13,045 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 70 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:13,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 103 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:26:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-18 14:26:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2024-11-18 14:26:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-18 14:26:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2024-11-18 14:26:13,065 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 52 [2024-11-18 14:26:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:13,065 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2024-11-18 14:26:13,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.130434782608696) internal successors, (49), 26 states have internal predecessors, (49), 13 states have call successors, (13), 1 states have call predecessors, (13), 10 states have return successors, (19), 10 states have call predecessors, (19), 13 states have call successors, (19) [2024-11-18 14:26:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2024-11-18 14:26:13,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-18 14:26:13,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:13,067 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:13,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-18 14:26:13,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:13,273 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:13,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:13,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1719425780, now seen corresponding path program 5 times [2024-11-18 14:26:13,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:13,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294551876] [2024-11-18 14:26:13,273 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:26:13,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:13,298 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-18 14:26:13,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:13,671 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 14:26:13,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:13,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294551876] [2024-11-18 14:26:13,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294551876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:13,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847250475] [2024-11-18 14:26:13,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:26:13,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:13,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:13,676 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 14:26:13,677 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 14:26:13,761 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-18 14:26:13,762 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:13,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-18 14:26:13,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-18 14:26:14,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-18 14:26:19,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847250475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:19,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:19,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 25] total 50 [2024-11-18 14:26:19,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348707380] [2024-11-18 14:26:19,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:19,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-18 14:26:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:19,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-18 14:26:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=2120, Unknown=0, NotChecked=0, Total=2450 [2024-11-18 14:26:19,214 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 50 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 39 states have internal predecessors, (79), 14 states have call successors, (15), 1 states have call predecessors, (15), 22 states have return successors, (33), 22 states have call predecessors, (33), 14 states have call successors, (33) [2024-11-18 14:26:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:19,704 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2024-11-18 14:26:19,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-18 14:26:19,705 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 39 states have internal predecessors, (79), 14 states have call successors, (15), 1 states have call predecessors, (15), 22 states have return successors, (33), 22 states have call predecessors, (33), 14 states have call successors, (33) Word has length 70 [2024-11-18 14:26:19,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:19,707 INFO L225 Difference]: With dead ends: 58 [2024-11-18 14:26:19,709 INFO L226 Difference]: Without dead ends: 51 [2024-11-18 14:26:19,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 104 SyntacticMatches, 11 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=955, Invalid=4015, Unknown=0, NotChecked=0, Total=4970 [2024-11-18 14:26:19,712 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 67 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:19,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 149 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:26:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-18 14:26:19,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-11-18 14:26:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 12 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-18 14:26:19,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2024-11-18 14:26:19,726 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 70 [2024-11-18 14:26:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:19,727 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2024-11-18 14:26:19,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 39 states have internal predecessors, (79), 14 states have call successors, (15), 1 states have call predecessors, (15), 22 states have return successors, (33), 22 states have call predecessors, (33), 14 states have call successors, (33) [2024-11-18 14:26:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2024-11-18 14:26:19,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-18 14:26:19,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:19,732 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:19,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 14:26:19,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:19,937 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:19,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:19,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1354232598, now seen corresponding path program 6 times [2024-11-18 14:26:19,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:19,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232038602] [2024-11-18 14:26:19,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:26:19,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:19,980 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-18 14:26:19,980 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:20,490 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-18 14:26:20,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232038602] [2024-11-18 14:26:20,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232038602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:20,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222996712] [2024-11-18 14:26:20,491 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 14:26:20,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:20,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:20,493 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 14:26:20,495 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 14:26:20,666 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-11-18 14:26:20,666 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:20,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-18 14:26:20,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2024-11-18 14:26:21,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-18 14:26:27,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222996712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:27,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:27,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 27] total 54 [2024-11-18 14:26:27,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486585349] [2024-11-18 14:26:27,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:27,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-18 14:26:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:27,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-18 14:26:27,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=2479, Unknown=0, NotChecked=0, Total=2862 [2024-11-18 14:26:27,092 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 54 states, 52 states have (on average 1.6346153846153846) internal successors, (85), 42 states have internal predecessors, (85), 15 states have call successors, (16), 1 states have call predecessors, (16), 24 states have return successors, (36), 24 states have call predecessors, (36), 15 states have call successors, (36) [2024-11-18 14:26:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:27,575 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2024-11-18 14:26:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-18 14:26:27,576 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 52 states have (on average 1.6346153846153846) internal successors, (85), 42 states have internal predecessors, (85), 15 states have call successors, (16), 1 states have call predecessors, (16), 24 states have return successors, (36), 24 states have call predecessors, (36), 15 states have call successors, (36) Word has length 76 [2024-11-18 14:26:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:27,578 INFO L225 Difference]: With dead ends: 61 [2024-11-18 14:26:27,578 INFO L226 Difference]: Without dead ends: 54 [2024-11-18 14:26:27,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 113 SyntacticMatches, 12 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1578 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1125, Invalid=4727, Unknown=0, NotChecked=0, Total=5852 [2024-11-18 14:26:27,581 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 64 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:27,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 151 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:26:27,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-18 14:26:27,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-18 14:26:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-18 14:26:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2024-11-18 14:26:27,591 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 76 [2024-11-18 14:26:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:27,591 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2024-11-18 14:26:27,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 52 states have (on average 1.6346153846153846) internal successors, (85), 42 states have internal predecessors, (85), 15 states have call successors, (16), 1 states have call predecessors, (16), 24 states have return successors, (36), 24 states have call predecessors, (36), 15 states have call successors, (36) [2024-11-18 14:26:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2024-11-18 14:26:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-18 14:26:27,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:27,593 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:27,606 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 14:26:27,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:27,793 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:27,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:27,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1734686668, now seen corresponding path program 7 times [2024-11-18 14:26:27,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:27,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49616759] [2024-11-18 14:26:27,794 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:26:27,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:26:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-18 14:26:28,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49616759] [2024-11-18 14:26:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49616759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403572790] [2024-11-18 14:26:28,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 14:26:28,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:28,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:28,147 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 14:26:28,148 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 14:26:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 14:26:28,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-18 14:26:28,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-18 14:26:28,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 366 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-18 14:26:35,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403572790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:35,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:35,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 29] total 31 [2024-11-18 14:26:35,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760528034] [2024-11-18 14:26:35,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:35,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-18 14:26:35,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:35,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-18 14:26:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2024-11-18 14:26:35,889 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 31 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 31 states have internal predecessors, (60), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) [2024-11-18 14:26:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:36,043 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2024-11-18 14:26:36,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 14:26:36,043 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 31 states have internal predecessors, (60), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) Word has length 82 [2024-11-18 14:26:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:36,045 INFO L225 Difference]: With dead ends: 64 [2024-11-18 14:26:36,045 INFO L226 Difference]: Without dead ends: 57 [2024-11-18 14:26:36,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 149 SyntacticMatches, 13 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=578, Invalid=1228, Unknown=0, NotChecked=0, Total=1806 [2024-11-18 14:26:36,046 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:36,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 115 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 14:26:36,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-18 14:26:36,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2024-11-18 14:26:36,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-18 14:26:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-18 14:26:36,055 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 82 [2024-11-18 14:26:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:36,055 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-18 14:26:36,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 31 states have internal predecessors, (60), 15 states have call successors, (15), 1 states have call predecessors, (15), 13 states have return successors, (26), 13 states have call predecessors, (26), 15 states have call successors, (26) [2024-11-18 14:26:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-18 14:26:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-18 14:26:36,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:36,057 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:36,071 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 14:26:36,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:36,258 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:36,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:36,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1433749930, now seen corresponding path program 8 times [2024-11-18 14:26:36,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:36,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281301861] [2024-11-18 14:26:36,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:26:36,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:36,294 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:26:36,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-18 14:26:36,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:36,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281301861] [2024-11-18 14:26:36,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281301861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:36,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138355982] [2024-11-18 14:26:36,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 14:26:36,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:36,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:36,709 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 14:26:36,710 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 14:26:37,017 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 14:26:37,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:37,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-18 14:26:37,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-18 14:26:37,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-18 14:26:46,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138355982] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:46,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:46,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 35 [2024-11-18 14:26:46,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628703095] [2024-11-18 14:26:46,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:46,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-18 14:26:46,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:46,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-18 14:26:46,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=869, Unknown=0, NotChecked=0, Total=1190 [2024-11-18 14:26:46,694 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 35 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 35 states have internal predecessors, (67), 16 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (29), 14 states have call predecessors, (29), 16 states have call successors, (29) [2024-11-18 14:26:46,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:46,959 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2024-11-18 14:26:46,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 14:26:46,959 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 35 states have internal predecessors, (67), 16 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (29), 14 states have call predecessors, (29), 16 states have call successors, (29) Word has length 88 [2024-11-18 14:26:46,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:46,960 INFO L225 Difference]: With dead ends: 67 [2024-11-18 14:26:46,960 INFO L226 Difference]: Without dead ends: 60 [2024-11-18 14:26:46,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 158 SyntacticMatches, 14 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=755, Invalid=1597, Unknown=0, NotChecked=0, Total=2352 [2024-11-18 14:26:46,962 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 179 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:46,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 126 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:26:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-18 14:26:46,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2024-11-18 14:26:46,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2024-11-18 14:26:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2024-11-18 14:26:46,969 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 88 [2024-11-18 14:26:46,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:46,970 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2024-11-18 14:26:46,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 2.0303030303030303) internal successors, (67), 35 states have internal predecessors, (67), 16 states have call successors, (16), 1 states have call predecessors, (16), 15 states have return successors, (29), 14 states have call predecessors, (29), 16 states have call successors, (29) [2024-11-18 14:26:46,970 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2024-11-18 14:26:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-18 14:26:46,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:46,972 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:46,987 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 14:26:47,172 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,SelfDestructingSolverStorable8 [2024-11-18 14:26:47,173 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:26:47,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:26:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1321174388, now seen corresponding path program 9 times [2024-11-18 14:26:47,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:26:47,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478226129] [2024-11-18 14:26:47,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:26:47,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:26:47,193 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-18 14:26:47,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 40 proven. 361 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-18 14:26:47,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:26:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478226129] [2024-11-18 14:26:47,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478226129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:26:47,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196424997] [2024-11-18 14:26:47,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 14:26:47,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:26:47,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:26:47,570 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 14:26:47,571 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 14:26:47,992 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-18 14:26:47,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:26:47,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 14:26:47,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:26:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-18 14:26:48,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:26:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-18 14:26:59,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196424997] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:26:59,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:26:59,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 33] total 40 [2024-11-18 14:26:59,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40664374] [2024-11-18 14:26:59,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:26:59,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-18 14:26:59,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:26:59,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-18 14:26:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1135, Unknown=0, NotChecked=0, Total=1560 [2024-11-18 14:26:59,725 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand has 40 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (35), 16 states have call predecessors, (35), 19 states have call successors, (35) [2024-11-18 14:26:59,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:26:59,939 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2024-11-18 14:26:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 14:26:59,940 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (35), 16 states have call predecessors, (35), 19 states have call successors, (35) Word has length 94 [2024-11-18 14:26:59,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:26:59,941 INFO L225 Difference]: With dead ends: 70 [2024-11-18 14:26:59,941 INFO L226 Difference]: Without dead ends: 63 [2024-11-18 14:26:59,942 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 166 SyntacticMatches, 15 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=916, Invalid=1946, Unknown=0, NotChecked=0, Total=2862 [2024-11-18 14:26:59,942 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 119 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:26:59,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 142 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:26:59,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-18 14:26:59,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2024-11-18 14:26:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-18 14:26:59,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-18 14:26:59,951 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 94 [2024-11-18 14:26:59,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:26:59,951 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-18 14:26:59,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.026315789473684) internal successors, (77), 40 states have internal predecessors, (77), 19 states have call successors, (19), 1 states have call predecessors, (19), 17 states have return successors, (35), 16 states have call predecessors, (35), 19 states have call successors, (35) [2024-11-18 14:26:59,952 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-18 14:26:59,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-18 14:26:59,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:26:59,953 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:26:59,968 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 14:27:00,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 14:27:00,154 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:27:00,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:27:00,154 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 10 times [2024-11-18 14:27:00,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:27:00,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802955693] [2024-11-18 14:27:00,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:27:00,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:27:00,190 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:27:00,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:27:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 27 proven. 374 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-18 14:27:00,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:27:00,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802955693] [2024-11-18 14:27:00,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802955693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:27:00,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8413610] [2024-11-18 14:27:00,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 14:27:00,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:27:00,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:27:00,580 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 14:27:00,581 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 14:27:01,133 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 14:27:01,134 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:27:01,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-18 14:27:01,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:27:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-18 14:27:01,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 14:27:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-18 14:27:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8413610] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 14:27:15,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 14:27:15,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 35] total 42 [2024-11-18 14:27:15,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108640023] [2024-11-18 14:27:15,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 14:27:15,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-18 14:27:15,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 14:27:15,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-18 14:27:15,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=1298, Unknown=0, NotChecked=0, Total=1722 [2024-11-18 14:27:15,671 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 42 states, 39 states have (on average 2.076923076923077) internal successors, (81), 42 states have internal predecessors, (81), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 18 states have call predecessors, (35), 21 states have call successors, (35) [2024-11-18 14:27:16,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 14:27:16,066 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2024-11-18 14:27:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-18 14:27:16,066 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 2.076923076923077) internal successors, (81), 42 states have internal predecessors, (81), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 18 states have call predecessors, (35), 21 states have call successors, (35) Word has length 100 [2024-11-18 14:27:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 14:27:16,067 INFO L225 Difference]: With dead ends: 82 [2024-11-18 14:27:16,067 INFO L226 Difference]: Without dead ends: 72 [2024-11-18 14:27:16,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 177 SyntacticMatches, 16 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1108, Invalid=2432, Unknown=0, NotChecked=0, Total=3540 [2024-11-18 14:27:16,069 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 178 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 14:27:16,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 148 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 14:27:16,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-18 14:27:16,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2024-11-18 14:27:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-18 14:27:16,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2024-11-18 14:27:16,085 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 100 [2024-11-18 14:27:16,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 14:27:16,086 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2024-11-18 14:27:16,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 2.076923076923077) internal successors, (81), 42 states have internal predecessors, (81), 21 states have call successors, (21), 1 states have call predecessors, (21), 18 states have return successors, (35), 18 states have call predecessors, (35), 21 states have call successors, (35) [2024-11-18 14:27:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2024-11-18 14:27:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-18 14:27:16,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 14:27:16,089 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 14:27:16,104 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 14:27:16,290 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,SelfDestructingSolverStorable10 [2024-11-18 14:27:16,290 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 14:27:16,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 14:27:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash 55840780, now seen corresponding path program 11 times [2024-11-18 14:27:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 14:27:16,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535083478] [2024-11-18 14:27:16,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:27:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 14:27:16,334 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-18 14:27:16,334 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:27:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-18 14:27:17,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 14:27:17,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535083478] [2024-11-18 14:27:17,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535083478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 14:27:17,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519641893] [2024-11-18 14:27:17,055 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 14:27:17,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 14:27:17,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 14:27:17,056 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 14:27:17,057 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 14:27:17,804 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-18 14:27:17,804 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 14:27:17,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-18 14:27:17,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 14:27:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-11-18 14:27:17,860 INFO L311 TraceCheckSpWp]: Computing backward predicates...