./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Fibonacci03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Fibonacci03.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 be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 02:07:26,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 02:07:26,160 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 02:07:26,163 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 02:07:26,163 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 02:07:26,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 02:07:26,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 02:07:26,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 02:07:26,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 02:07:26,179 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 02:07:26,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 02:07:26,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 02:07:26,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 02:07:26,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 02:07:26,181 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 02:07:26,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 02:07:26,182 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 02:07:26,182 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 02:07:26,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 02:07:26,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 02:07:26,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 02:07:26,185 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 02:07:26,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 02:07:26,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 02:07:26,186 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 02:07:26,186 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 02:07:26,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 02:07:26,187 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 02:07:26,187 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 02:07:26,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 02:07:26,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 02:07:26,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 02:07:26,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:07:26,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 02:07:26,189 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 02:07:26,189 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 02:07:26,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 02:07:26,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 02:07:26,190 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 02:07:26,190 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 02:07:26,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 02:07:26,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 02:07:26,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 [2024-11-22 02:07:26,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 02:07:26,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 02:07:26,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 02:07:26,497 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 02:07:26,498 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 02:07:26,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci03.c [2024-11-22 02:07:27,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 02:07:28,067 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 02:07:28,067 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci03.c [2024-11-22 02:07:28,075 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd0aa8ac/bd94bd9e6ca748df860c0af6bba106e1/FLAG39a116f77 [2024-11-22 02:07:28,089 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bd0aa8ac/bd94bd9e6ca748df860c0af6bba106e1 [2024-11-22 02:07:28,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 02:07:28,092 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 02:07:28,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 02:07:28,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 02:07:28,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 02:07:28,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535a6750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28, skipping insertion in model container [2024-11-22 02:07:28,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,120 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 02:07:28,281 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/Fibonacci03.c[788,801] [2024-11-22 02:07:28,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:07:28,294 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 02:07:28,307 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/Fibonacci03.c[788,801] [2024-11-22 02:07:28,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 02:07:28,323 INFO L204 MainTranslator]: Completed translation [2024-11-22 02:07:28,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28 WrapperNode [2024-11-22 02:07:28,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 02:07:28,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 02:07:28,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 02:07:28,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 02:07:28,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,336 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,348 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2024-11-22 02:07:28,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 02:07:28,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 02:07:28,350 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 02:07:28,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 02:07:28,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,359 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,371 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 02:07:28,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,378 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,379 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 02:07:28,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 02:07:28,381 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 02:07:28,381 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 02:07:28,382 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (1/1) ... [2024-11-22 02:07:28,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 02:07:28,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:28,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 02:07:28,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 02:07:28,453 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-22 02:07:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-22 02:07:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 02:07:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 02:07:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 02:07:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 02:07:28,497 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 02:07:28,499 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 02:07:28,683 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-22 02:07:28,683 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 02:07:28,704 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 02:07:28,705 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 02:07:28,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:07:28 BoogieIcfgContainer [2024-11-22 02:07:28,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 02:07:28,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 02:07:28,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 02:07:28,715 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 02:07:28,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:07:28" (1/3) ... [2024-11-22 02:07:28,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb01e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:07:28, skipping insertion in model container [2024-11-22 02:07:28,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:07:28" (2/3) ... [2024-11-22 02:07:28,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb01e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:07:28, skipping insertion in model container [2024-11-22 02:07:28,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:07:28" (3/3) ... [2024-11-22 02:07:28,722 INFO L112 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2024-11-22 02:07:28,752 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 02:07:28,756 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 02:07:28,859 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 02:07:28,866 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;@6dfae34e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 02:07:28,867 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 02:07:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 02:07:28,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 02:07:28,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:28,887 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:28,888 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:28,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1939714822, now seen corresponding path program 1 times [2024-11-22 02:07:28,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:28,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442632018] [2024-11-22 02:07:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:07:29,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:29,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442632018] [2024-11-22 02:07:29,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442632018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:07:29,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:07:29,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:07:29,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951642739] [2024-11-22 02:07:29,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:07:29,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:07:29,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:29,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:07:29,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:07:29,189 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:07:29,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:29,285 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2024-11-22 02:07:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:07:29,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-11-22 02:07:29,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:29,295 INFO L225 Difference]: With dead ends: 31 [2024-11-22 02:07:29,296 INFO L226 Difference]: Without dead ends: 21 [2024-11-22 02:07:29,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:07:29,302 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:29,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:29,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-22 02:07:29,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-11-22 02:07:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-22 02:07:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-22 02:07:29,342 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 11 [2024-11-22 02:07:29,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:29,342 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-22 02:07:29,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:07:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-22 02:07:29,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-22 02:07:29,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:29,343 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:29,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 02:07:29,347 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:29,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:29,348 INFO L85 PathProgramCache]: Analyzing trace with hash 692912656, now seen corresponding path program 1 times [2024-11-22 02:07:29,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:29,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952560258] [2024-11-22 02:07:29,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:29,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 02:07:29,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:29,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952560258] [2024-11-22 02:07:29,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952560258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 02:07:29,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 02:07:29,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 02:07:29,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560384842] [2024-11-22 02:07:29,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 02:07:29,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 02:07:29,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:29,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 02:07:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:07:29,488 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:07:29,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:29,556 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-11-22 02:07:29,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 02:07:29,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2024-11-22 02:07:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:29,559 INFO L225 Difference]: With dead ends: 25 [2024-11-22 02:07:29,559 INFO L226 Difference]: Without dead ends: 21 [2024-11-22 02:07:29,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 02:07:29,561 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:29,562 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:29,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-22 02:07:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2024-11-22 02:07:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-22 02:07:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-22 02:07:29,573 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2024-11-22 02:07:29,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:29,573 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-22 02:07:29,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 02:07:29,574 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-22 02:07:29,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 02:07:29,576 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:29,576 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:29,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 02:07:29,576 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:29,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:29,578 INFO L85 PathProgramCache]: Analyzing trace with hash 453332055, now seen corresponding path program 1 times [2024-11-22 02:07:29,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:29,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759852625] [2024-11-22 02:07:29,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:29,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:07:29,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:29,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759852625] [2024-11-22 02:07:29,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759852625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:29,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158081951] [2024-11-22 02:07:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:29,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:29,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:29,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:29,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 02:07:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:29,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 02:07:29,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 02:07:29,886 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 02:07:30,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158081951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:30,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:30,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2024-11-22 02:07:30,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401001323] [2024-11-22 02:07:30,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:30,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:07:30,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:30,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:07:30,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:07:30,209 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-22 02:07:30,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:30,376 INFO L93 Difference]: Finished difference Result 43 states and 61 transitions. [2024-11-22 02:07:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:07:30,376 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 24 [2024-11-22 02:07:30,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:30,377 INFO L225 Difference]: With dead ends: 43 [2024-11-22 02:07:30,377 INFO L226 Difference]: Without dead ends: 26 [2024-11-22 02:07:30,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:07:30,378 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:30,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 70 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:30,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-22 02:07:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-22 02:07:30,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-22 02:07:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2024-11-22 02:07:30,391 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 24 [2024-11-22 02:07:30,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:30,391 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2024-11-22 02:07:30,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-22 02:07:30,393 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-11-22 02:07:30,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-22 02:07:30,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:30,395 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:30,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 02:07:30,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:30,597 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:30,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:30,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1186000891, now seen corresponding path program 1 times [2024-11-22 02:07:30,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:30,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145446902] [2024-11-22 02:07:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:30,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-22 02:07:30,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:30,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145446902] [2024-11-22 02:07:30,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145446902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:30,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564866476] [2024-11-22 02:07:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 02:07:30,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:30,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:30,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:30,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 02:07:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:30,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:07:30,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:30,943 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-22 02:07:30,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:31,244 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 55 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 02:07:31,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564866476] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:31,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:31,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 12 [2024-11-22 02:07:31,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599748257] [2024-11-22 02:07:31,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:31,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 02:07:31,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:31,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 02:07:31,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-22 02:07:31,247 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-22 02:07:31,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:31,343 INFO L93 Difference]: Finished difference Result 45 states and 75 transitions. [2024-11-22 02:07:31,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 02:07:31,343 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 52 [2024-11-22 02:07:31,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:31,345 INFO L225 Difference]: With dead ends: 45 [2024-11-22 02:07:31,345 INFO L226 Difference]: Without dead ends: 39 [2024-11-22 02:07:31,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-22 02:07:31,346 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:31,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 69 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:31,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-22 02:07:31,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2024-11-22 02:07:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 25 states have internal predecessors, (25), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (30), 9 states have call predecessors, (30), 6 states have call successors, (30) [2024-11-22 02:07:31,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 61 transitions. [2024-11-22 02:07:31,354 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 61 transitions. Word has length 52 [2024-11-22 02:07:31,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:31,354 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 61 transitions. [2024-11-22 02:07:31,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 7 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-22 02:07:31,355 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 61 transitions. [2024-11-22 02:07:31,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-22 02:07:31,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:31,358 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 15, 11, 11, 11, 11, 11, 11, 11, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:31,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 02:07:31,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-22 02:07:31,559 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:31,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:31,560 INFO L85 PathProgramCache]: Analyzing trace with hash 843019629, now seen corresponding path program 2 times [2024-11-22 02:07:31,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:31,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294248405] [2024-11-22 02:07:31,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:31,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:31,596 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:31,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 69 proven. 401 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2024-11-22 02:07:31,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:31,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294248405] [2024-11-22 02:07:31,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294248405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:31,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224275044] [2024-11-22 02:07:31,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:31,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:31,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:31,914 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:31,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 02:07:32,002 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:32,003 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:32,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 02:07:32,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 69 proven. 401 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2024-11-22 02:07:32,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:32,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1337 backedges. 69 proven. 427 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2024-11-22 02:07:32,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224275044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:32,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:32,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 13] total 16 [2024-11-22 02:07:32,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939680944] [2024-11-22 02:07:32,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:32,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 02:07:32,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:32,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 02:07:32,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-22 02:07:32,924 INFO L87 Difference]: Start difference. First operand 36 states and 61 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) [2024-11-22 02:07:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:33,054 INFO L93 Difference]: Finished difference Result 55 states and 111 transitions. [2024-11-22 02:07:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:07:33,055 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) Word has length 158 [2024-11-22 02:07:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:33,057 INFO L225 Difference]: With dead ends: 55 [2024-11-22 02:07:33,057 INFO L226 Difference]: Without dead ends: 49 [2024-11-22 02:07:33,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 309 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2024-11-22 02:07:33,058 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:33,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 85 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-22 02:07:33,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2024-11-22 02:07:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 31 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (56), 13 states have call predecessors, (56), 8 states have call successors, (56) [2024-11-22 02:07:33,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 95 transitions. [2024-11-22 02:07:33,072 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 95 transitions. Word has length 158 [2024-11-22 02:07:33,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:33,072 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 95 transitions. [2024-11-22 02:07:33,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (17), 8 states have call predecessors, (17), 11 states have call successors, (17) [2024-11-22 02:07:33,073 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 95 transitions. [2024-11-22 02:07:33,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-22 02:07:33,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:33,077 INFO L215 NwaCegarLoop]: trace histogram [59, 59, 41, 29, 29, 29, 29, 29, 29, 29, 18, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:33,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 02:07:33,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:33,279 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:33,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1718675215, now seen corresponding path program 3 times [2024-11-22 02:07:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026169727] [2024-11-22 02:07:33,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:07:33,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:33,303 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 02:07:33,303 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1080 proven. 43 refuted. 0 times theorem prover too weak. 8165 trivial. 0 not checked. [2024-11-22 02:07:33,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:33,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026169727] [2024-11-22 02:07:33,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026169727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:33,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302139692] [2024-11-22 02:07:33,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:07:33,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:33,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:33,384 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:33,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 02:07:33,452 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 02:07:33,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:33,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 02:07:33,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 2073 proven. 13 refuted. 0 times theorem prover too weak. 7202 trivial. 0 not checked. [2024-11-22 02:07:33,506 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1262 proven. 60 refuted. 0 times theorem prover too weak. 7966 trivial. 0 not checked. [2024-11-22 02:07:34,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302139692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:34,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:34,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-22 02:07:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326222194] [2024-11-22 02:07:34,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:34,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 02:07:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 02:07:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-22 02:07:34,650 INFO L87 Difference]: Start difference. First operand 46 states and 95 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 4 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-22 02:07:34,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:34,800 INFO L93 Difference]: Finished difference Result 93 states and 240 transitions. [2024-11-22 02:07:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 02:07:34,801 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 4 states have call predecessors, (14), 7 states have call successors, (14) Word has length 400 [2024-11-22 02:07:34,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:34,803 INFO L225 Difference]: With dead ends: 93 [2024-11-22 02:07:34,804 INFO L226 Difference]: Without dead ends: 51 [2024-11-22 02:07:34,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 791 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:07:34,810 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:34,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 75 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:34,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-22 02:07:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2024-11-22 02:07:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 8 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (51), 13 states have call predecessors, (51), 8 states have call successors, (51) [2024-11-22 02:07:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 92 transitions. [2024-11-22 02:07:34,824 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 92 transitions. Word has length 400 [2024-11-22 02:07:34,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:34,824 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 92 transitions. [2024-11-22 02:07:34,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (14), 4 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-22 02:07:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 92 transitions. [2024-11-22 02:07:34,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2024-11-22 02:07:34,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:34,830 INFO L215 NwaCegarLoop]: trace histogram [71, 71, 61, 35, 35, 35, 35, 35, 35, 35, 26, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:34,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 02:07:35,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:35,031 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:35,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:35,032 INFO L85 PathProgramCache]: Analyzing trace with hash 482273333, now seen corresponding path program 4 times [2024-11-22 02:07:35,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:35,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301747301] [2024-11-22 02:07:35,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:07:35,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:35,100 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:07:35,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 1256 proven. 2490 refuted. 0 times theorem prover too weak. 10404 trivial. 0 not checked. [2024-11-22 02:07:35,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:35,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301747301] [2024-11-22 02:07:35,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301747301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:35,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049510204] [2024-11-22 02:07:35,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 02:07:35,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:35,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:35,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:35,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 02:07:35,843 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 02:07:35,843 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:35,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 02:07:35,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 4694 proven. 170 refuted. 0 times theorem prover too weak. 9286 trivial. 0 not checked. [2024-11-22 02:07:35,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14150 backedges. 506 proven. 2500 refuted. 0 times theorem prover too weak. 11144 trivial. 0 not checked. [2024-11-22 02:07:37,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049510204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:37,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:37,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11, 15] total 27 [2024-11-22 02:07:37,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133853124] [2024-11-22 02:07:37,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:37,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-22 02:07:37,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:37,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-22 02:07:37,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2024-11-22 02:07:37,701 INFO L87 Difference]: Start difference. First operand 48 states and 92 transitions. Second operand has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 21 states have call successors, (28), 2 states have call predecessors, (28), 14 states have return successors, (39), 17 states have call predecessors, (39), 21 states have call successors, (39) [2024-11-22 02:07:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:38,410 INFO L93 Difference]: Finished difference Result 140 states and 339 transitions. [2024-11-22 02:07:38,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-22 02:07:38,411 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 21 states have call successors, (28), 2 states have call predecessors, (28), 14 states have return successors, (39), 17 states have call predecessors, (39), 21 states have call successors, (39) Word has length 492 [2024-11-22 02:07:38,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:38,413 INFO L225 Difference]: With dead ends: 140 [2024-11-22 02:07:38,415 INFO L226 Difference]: Without dead ends: 96 [2024-11-22 02:07:38,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 975 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=654, Invalid=2102, Unknown=0, NotChecked=0, Total=2756 [2024-11-22 02:07:38,419 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 185 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:38,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 203 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:07:38,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-22 02:07:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-22 02:07:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 66 states have internal predecessors, (73), 17 states have call successors, (17), 14 states have call predecessors, (17), 9 states have return successors, (43), 15 states have call predecessors, (43), 17 states have call successors, (43) [2024-11-22 02:07:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 133 transitions. [2024-11-22 02:07:38,439 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 133 transitions. Word has length 492 [2024-11-22 02:07:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:38,439 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 133 transitions. [2024-11-22 02:07:38,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.259259259259259) internal successors, (88), 27 states have internal predecessors, (88), 21 states have call successors, (28), 2 states have call predecessors, (28), 14 states have return successors, (39), 17 states have call predecessors, (39), 21 states have call successors, (39) [2024-11-22 02:07:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 133 transitions. [2024-11-22 02:07:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2024-11-22 02:07:38,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:38,453 INFO L215 NwaCegarLoop]: trace histogram [97, 97, 78, 48, 48, 48, 48, 48, 48, 48, 30, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:38,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 02:07:38,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:38,654 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:38,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:38,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1230230680, now seen corresponding path program 5 times [2024-11-22 02:07:38,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:38,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969159984] [2024-11-22 02:07:38,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:07:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:38,783 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2024-11-22 02:07:38,784 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 26139 backedges. 3735 proven. 1741 refuted. 0 times theorem prover too weak. 20663 trivial. 0 not checked. [2024-11-22 02:07:39,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:39,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969159984] [2024-11-22 02:07:39,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969159984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:39,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355056147] [2024-11-22 02:07:39,345 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 02:07:39,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:39,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:39,347 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:39,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 02:07:39,552 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2024-11-22 02:07:39,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:39,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 02:07:39,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 26139 backedges. 11426 proven. 865 refuted. 0 times theorem prover too weak. 13848 trivial. 0 not checked. [2024-11-22 02:07:39,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 26139 backedges. 3888 proven. 1940 refuted. 0 times theorem prover too weak. 20311 trivial. 0 not checked. [2024-11-22 02:07:43,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355056147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:43,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:43,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 23] total 28 [2024-11-22 02:07:43,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122911669] [2024-11-22 02:07:43,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:43,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 02:07:43,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:43,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 02:07:43,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2024-11-22 02:07:43,571 INFO L87 Difference]: Start difference. First operand 96 states and 133 transitions. Second operand has 28 states, 28 states have (on average 3.25) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (28), 2 states have call predecessors, (28), 12 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) [2024-11-22 02:07:43,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:43,913 INFO L93 Difference]: Finished difference Result 201 states and 301 transitions. [2024-11-22 02:07:43,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-22 02:07:43,914 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.25) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (28), 2 states have call predecessors, (28), 12 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) Word has length 665 [2024-11-22 02:07:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:43,917 INFO L225 Difference]: With dead ends: 201 [2024-11-22 02:07:43,917 INFO L226 Difference]: Without dead ends: 111 [2024-11-22 02:07:43,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1368 GetRequests, 1314 SyntacticMatches, 11 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 02:07:43,920 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 75 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:43,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 221 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 02:07:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-22 02:07:43,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2024-11-22 02:07:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 66 states have internal predecessors, (72), 18 states have call successors, (18), 14 states have call predecessors, (18), 9 states have return successors, (43), 16 states have call predecessors, (43), 18 states have call successors, (43) [2024-11-22 02:07:43,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 133 transitions. [2024-11-22 02:07:43,936 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 133 transitions. Word has length 665 [2024-11-22 02:07:43,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:43,938 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 133 transitions. [2024-11-22 02:07:43,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.25) internal successors, (91), 28 states have internal predecessors, (91), 21 states have call successors, (28), 2 states have call predecessors, (28), 12 states have return successors, (37), 14 states have call predecessors, (37), 21 states have call successors, (37) [2024-11-22 02:07:43,940 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 133 transitions. [2024-11-22 02:07:43,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-11-22 02:07:43,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:43,942 INFO L215 NwaCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 21, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:43,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 02:07:44,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:44,143 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:44,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:44,144 INFO L85 PathProgramCache]: Analyzing trace with hash -45194381, now seen corresponding path program 6 times [2024-11-22 02:07:44,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:44,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547007134] [2024-11-22 02:07:44,144 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:07:44,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:44,207 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:07:44,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:44,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 508 proven. 1816 refuted. 0 times theorem prover too weak. 10063 trivial. 0 not checked. [2024-11-22 02:07:44,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:44,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547007134] [2024-11-22 02:07:44,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547007134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:44,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202201324] [2024-11-22 02:07:44,406 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 02:07:44,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:44,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:44,408 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:44,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 02:07:44,547 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-11-22 02:07:44,547 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:44,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 02:07:44,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 508 proven. 1816 refuted. 0 times theorem prover too weak. 10063 trivial. 0 not checked. [2024-11-22 02:07:44,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 512 proven. 1869 refuted. 0 times theorem prover too weak. 10006 trivial. 0 not checked. [2024-11-22 02:07:46,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202201324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:46,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:46,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 17] total 18 [2024-11-22 02:07:46,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007916749] [2024-11-22 02:07:46,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:46,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 02:07:46,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:46,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 02:07:46,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2024-11-22 02:07:46,475 INFO L87 Difference]: Start difference. First operand 97 states and 133 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-22 02:07:46,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:46,655 INFO L93 Difference]: Finished difference Result 106 states and 151 transitions. [2024-11-22 02:07:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 02:07:46,656 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) Word has length 461 [2024-11-22 02:07:46,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:46,658 INFO L225 Difference]: With dead ends: 106 [2024-11-22 02:07:46,658 INFO L226 Difference]: Without dead ends: 102 [2024-11-22 02:07:46,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 913 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2024-11-22 02:07:46,659 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 63 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:46,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 99 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 02:07:46,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-22 02:07:46,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-22 02:07:46,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 69 states have internal predecessors, (75), 19 states have call successors, (19), 14 states have call predecessors, (19), 10 states have return successors, (53), 18 states have call predecessors, (53), 19 states have call successors, (53) [2024-11-22 02:07:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 147 transitions. [2024-11-22 02:07:46,667 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 147 transitions. Word has length 461 [2024-11-22 02:07:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:46,668 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 147 transitions. [2024-11-22 02:07:46,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 13 states have call successors, (17), 1 states have call predecessors, (17), 8 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2024-11-22 02:07:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 147 transitions. [2024-11-22 02:07:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2024-11-22 02:07:46,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:46,673 INFO L215 NwaCegarLoop]: trace histogram [141, 141, 114, 70, 70, 70, 70, 70, 70, 70, 44, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:46,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 02:07:46,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:46,877 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:46,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:46,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1817430884, now seen corresponding path program 7 times [2024-11-22 02:07:46,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:46,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557609729] [2024-11-22 02:07:46,877 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:07:46,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 55581 backedges. 2125 proven. 7600 refuted. 0 times theorem prover too weak. 45856 trivial. 0 not checked. [2024-11-22 02:07:48,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:48,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557609729] [2024-11-22 02:07:48,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557609729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626392696] [2024-11-22 02:07:48,364 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 02:07:48,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:48,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:48,366 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:48,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 02:07:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 02:07:48,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 2161 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-22 02:07:48,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 55581 backedges. 28939 proven. 3803 refuted. 0 times theorem prover too weak. 22839 trivial. 0 not checked. [2024-11-22 02:07:49,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:07:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 55581 backedges. 2437 proven. 8547 refuted. 0 times theorem prover too weak. 44597 trivial. 0 not checked. [2024-11-22 02:07:54,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626392696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:07:54,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:07:54,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2024-11-22 02:07:54,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510001732] [2024-11-22 02:07:54,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:07:54,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-22 02:07:54,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:07:54,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-22 02:07:54,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 02:07:54,644 INFO L87 Difference]: Start difference. First operand 102 states and 147 transitions. Second operand has 36 states, 36 states have (on average 3.2222222222222223) internal successors, (116), 36 states have internal predecessors, (116), 30 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) [2024-11-22 02:07:55,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:07:55,260 INFO L93 Difference]: Finished difference Result 221 states and 366 transitions. [2024-11-22 02:07:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-22 02:07:55,260 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.2222222222222223) internal successors, (116), 36 states have internal predecessors, (116), 30 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) Word has length 965 [2024-11-22 02:07:55,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:07:55,263 INFO L225 Difference]: With dead ends: 221 [2024-11-22 02:07:55,263 INFO L226 Difference]: Without dead ends: 125 [2024-11-22 02:07:55,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1988 GetRequests, 1908 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1076, Invalid=3346, Unknown=0, NotChecked=0, Total=4422 [2024-11-22 02:07:55,271 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 306 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:07:55,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 213 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:07:55,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-22 02:07:55,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2024-11-22 02:07:55,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 83 states have internal predecessors, (91), 23 states have call successors, (23), 19 states have call predecessors, (23), 10 states have return successors, (58), 18 states have call predecessors, (58), 23 states have call successors, (58) [2024-11-22 02:07:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 172 transitions. [2024-11-22 02:07:55,291 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 172 transitions. Word has length 965 [2024-11-22 02:07:55,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:07:55,295 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 172 transitions. [2024-11-22 02:07:55,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.2222222222222223) internal successors, (116), 36 states have internal predecessors, (116), 30 states have call successors, (36), 2 states have call predecessors, (36), 16 states have return successors, (49), 17 states have call predecessors, (49), 30 states have call successors, (49) [2024-11-22 02:07:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 172 transitions. [2024-11-22 02:07:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2024-11-22 02:07:55,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:07:55,303 INFO L215 NwaCegarLoop]: trace histogram [125, 125, 101, 62, 62, 62, 62, 62, 62, 62, 39, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:07:55,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 02:07:55,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-22 02:07:55,504 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:07:55,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:07:55,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2070327020, now seen corresponding path program 8 times [2024-11-22 02:07:55,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:07:55,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180768995] [2024-11-22 02:07:55,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:55,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:07:55,618 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:55,619 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3187 proven. 6174 refuted. 0 times theorem prover too weak. 34253 trivial. 0 not checked. [2024-11-22 02:07:56,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:07:56,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180768995] [2024-11-22 02:07:56,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180768995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:07:56,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320462309] [2024-11-22 02:07:56,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 02:07:56,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:07:56,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:07:56,828 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:07:56,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 02:07:57,183 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 02:07:57,183 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:07:57,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-22 02:07:57,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:07:57,444 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3735 proven. 6599 refuted. 0 times theorem prover too weak. 33280 trivial. 0 not checked. [2024-11-22 02:07:57,444 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 02:08:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 43614 backedges. 3735 proven. 6746 refuted. 0 times theorem prover too weak. 33133 trivial. 0 not checked. [2024-11-22 02:08:03,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320462309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 02:08:03,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 02:08:03,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 35] total 40 [2024-11-22 02:08:03,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127101571] [2024-11-22 02:08:03,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 02:08:03,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-22 02:08:03,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 02:08:03,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-22 02:08:03,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1309, Unknown=0, NotChecked=0, Total=1560 [2024-11-22 02:08:03,177 INFO L87 Difference]: Start difference. First operand 121 states and 172 transitions. Second operand has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (51), 19 states have call predecessors, (51), 33 states have call successors, (51) [2024-11-22 02:08:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 02:08:03,926 INFO L93 Difference]: Finished difference Result 272 states and 464 transitions. [2024-11-22 02:08:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-22 02:08:03,927 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (51), 19 states have call predecessors, (51), 33 states have call successors, (51) Word has length 856 [2024-11-22 02:08:03,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 02:08:03,929 INFO L225 Difference]: With dead ends: 272 [2024-11-22 02:08:03,933 INFO L226 Difference]: Without dead ends: 157 [2024-11-22 02:08:03,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1779 GetRequests, 1688 SyntacticMatches, 17 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1360, Invalid=4340, Unknown=0, NotChecked=0, Total=5700 [2024-11-22 02:08:03,937 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 320 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 02:08:03,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 247 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 02:08:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-22 02:08:03,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 135. [2024-11-22 02:08:03,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 97 states have (on average 1.041237113402062) internal successors, (101), 93 states have internal predecessors, (101), 27 states have call successors, (27), 22 states have call predecessors, (27), 10 states have return successors, (66), 19 states have call predecessors, (66), 27 states have call successors, (66) [2024-11-22 02:08:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 194 transitions. [2024-11-22 02:08:03,956 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 194 transitions. Word has length 856 [2024-11-22 02:08:03,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 02:08:03,959 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 194 transitions. [2024-11-22 02:08:03,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.05) internal successors, (122), 40 states have internal predecessors, (122), 33 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (51), 19 states have call predecessors, (51), 33 states have call successors, (51) [2024-11-22 02:08:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 194 transitions. [2024-11-22 02:08:03,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 748 [2024-11-22 02:08:03,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 02:08:03,963 INFO L215 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 02:08:03,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 02:08:04,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:04,164 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 02:08:04,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 02:08:04,165 INFO L85 PathProgramCache]: Analyzing trace with hash -425340118, now seen corresponding path program 9 times [2024-11-22 02:08:04,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 02:08:04,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907405786] [2024-11-22 02:08:04,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 02:08:04,360 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2024-11-22 02:08:04,360 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 3489 proven. 9630 refuted. 0 times theorem prover too weak. 19977 trivial. 0 not checked. [2024-11-22 02:08:14,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 02:08:14,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907405786] [2024-11-22 02:08:14,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907405786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 02:08:14,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622566318] [2024-11-22 02:08:14,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 02:08:14,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 02:08:14,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 02:08:14,693 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 02:08:14,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 02:08:15,183 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2024-11-22 02:08:15,184 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 02:08:15,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 220 conjuncts are in the unsatisfiable core [2024-11-22 02:08:15,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 02:08:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2024-11-22 02:08:15,795 INFO L311 TraceCheckSpWp]: Computing backward predicates...