./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/nested_delay_nd.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/loops-crafted-1/nested_delay_nd.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 39463d01f5c85d47bf5e231172595e96b8ff556c59c4a9ab8cf46a88a393b05c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:08:46,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:08:46,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:08:46,102 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:08:46,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:08:46,135 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:08:46,136 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:08:46,136 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:08:46,137 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:08:46,138 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:08:46,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:08:46,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:08:46,140 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:08:46,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:08:46,141 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:08:46,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:08:46,145 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:08:46,146 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:08:46,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:08:46,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:08:46,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:08:46,147 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:08:46,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:08:46,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:08:46,148 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:08:46,149 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:08:46,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:08:46,149 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:08:46,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:08:46,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:08:46,150 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:08:46,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:08:46,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:08:46,152 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:08:46,152 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:08:46,152 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:08:46,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:08:46,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:08:46,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:08:46,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:08:46,153 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:08:46,154 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:08:46,154 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39463d01f5c85d47bf5e231172595e96b8ff556c59c4a9ab8cf46a88a393b05c [2024-11-22 01:08:46,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:08:46,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:08:46,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:08:46,408 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:08:46,409 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:08:46,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c [2024-11-22 01:08:47,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:08:47,987 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:08:47,988 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c [2024-11-22 01:08:47,997 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3118030a9/37a453fcd59b444f8ff80795ba0b12e8/FLAG5dc4c8f0c [2024-11-22 01:08:48,010 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3118030a9/37a453fcd59b444f8ff80795ba0b12e8 [2024-11-22 01:08:48,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:08:48,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:08:48,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:08:48,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:08:48,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:08:48,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e867097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48, skipping insertion in model container [2024-11-22 01:08:48,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,042 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:08:48,230 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/loops-crafted-1/nested_delay_nd.c[465,478] [2024-11-22 01:08:48,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:08:48,255 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:08:48,268 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/loops-crafted-1/nested_delay_nd.c[465,478] [2024-11-22 01:08:48,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:08:48,288 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:08:48,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48 WrapperNode [2024-11-22 01:08:48,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:08:48,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:08:48,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:08:48,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:08:48,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,299 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,316 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-11-22 01:08:48,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:08:48,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:08:48,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:08:48,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:08:48,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,329 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,337 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 01:08:48,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,345 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:08:48,350 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:08:48,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:08:48,351 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:08:48,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (1/1) ... [2024-11-22 01:08:48,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:08:48,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:08:48,391 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 01:08:48,394 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 01:08:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:08:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:08:48,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:08:48,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:08:48,518 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:08:48,520 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:08:48,689 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-22 01:08:48,692 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:08:48,706 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:08:48,708 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 01:08:48,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:48 BoogieIcfgContainer [2024-11-22 01:08:48,709 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:08:48,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:08:48,711 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:08:48,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:08:48,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:48" (1/3) ... [2024-11-22 01:08:48,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa06064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:48, skipping insertion in model container [2024-11-22 01:08:48,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:48" (2/3) ... [2024-11-22 01:08:48,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa06064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:48, skipping insertion in model container [2024-11-22 01:08:48,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:48" (3/3) ... [2024-11-22 01:08:48,718 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_delay_nd.c [2024-11-22 01:08:48,734 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:08:48,734 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:08:48,801 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:08:48,807 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;@18d91254, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:08:48,808 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:08:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:48,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-22 01:08:48,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:48,817 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:48,818 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:48,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:48,823 INFO L85 PathProgramCache]: Analyzing trace with hash -493598204, now seen corresponding path program 1 times [2024-11-22 01:08:48,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:48,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366010770] [2024-11-22 01:08:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:48,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:49,015 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 01:08:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366010770] [2024-11-22 01:08:49,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366010770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:08:49,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:08:49,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 01:08:49,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106448282] [2024-11-22 01:08:49,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:08:49,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 01:08:49,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 01:08:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:08:49,049 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:49,061 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2024-11-22 01:08:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 01:08:49,065 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-22 01:08:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:49,071 INFO L225 Difference]: With dead ends: 35 [2024-11-22 01:08:49,071 INFO L226 Difference]: Without dead ends: 17 [2024-11-22 01:08:49,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:08:49,079 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:49,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:08:49,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-22 01:08:49,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-22 01:08:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2024-11-22 01:08:49,109 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 12 [2024-11-22 01:08:49,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:49,110 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2024-11-22 01:08:49,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,111 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2024-11-22 01:08:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-22 01:08:49,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:49,112 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:49,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 01:08:49,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:49,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:49,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2059231113, now seen corresponding path program 1 times [2024-11-22 01:08:49,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:49,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292484849] [2024-11-22 01:08:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:49,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:49,302 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 01:08:49,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:49,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292484849] [2024-11-22 01:08:49,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292484849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:08:49,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:08:49,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 01:08:49,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593247323] [2024-11-22 01:08:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:08:49,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:08:49,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:49,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:08:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:08:49,306 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:49,379 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2024-11-22 01:08:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:08:49,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-22 01:08:49,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:49,381 INFO L225 Difference]: With dead ends: 33 [2024-11-22 01:08:49,381 INFO L226 Difference]: Without dead ends: 20 [2024-11-22 01:08:49,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:08:49,383 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:49,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 19 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:08:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-22 01:08:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-11-22 01:08:49,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2024-11-22 01:08:49,391 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 12 [2024-11-22 01:08:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:49,391 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2024-11-22 01:08:49,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2024-11-22 01:08:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-22 01:08:49,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:49,393 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:49,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 01:08:49,394 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:49,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:49,395 INFO L85 PathProgramCache]: Analyzing trace with hash 573171571, now seen corresponding path program 1 times [2024-11-22 01:08:49,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:49,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513922961] [2024-11-22 01:08:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:49,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 01:08:49,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:49,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513922961] [2024-11-22 01:08:49,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513922961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:08:49,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:08:49,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 01:08:49,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417354956] [2024-11-22 01:08:49,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:08:49,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:08:49,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:49,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:08:49,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:08:49,469 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:49,497 INFO L93 Difference]: Finished difference Result 36 states and 51 transitions. [2024-11-22 01:08:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:08:49,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-22 01:08:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:49,498 INFO L225 Difference]: With dead ends: 36 [2024-11-22 01:08:49,498 INFO L226 Difference]: Without dead ends: 22 [2024-11-22 01:08:49,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:08:49,500 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:49,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:08:49,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-22 01:08:49,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2024-11-22 01:08:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2024-11-22 01:08:49,504 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 15 [2024-11-22 01:08:49,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:49,504 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2024-11-22 01:08:49,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2024-11-22 01:08:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-22 01:08:49,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:49,505 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:49,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 01:08:49,506 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:49,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:49,510 INFO L85 PathProgramCache]: Analyzing trace with hash 630429873, now seen corresponding path program 1 times [2024-11-22 01:08:49,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:49,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929682132] [2024-11-22 01:08:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:49,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 01:08:49,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:49,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929682132] [2024-11-22 01:08:49,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929682132] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:08:49,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:08:49,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 01:08:49,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520720087] [2024-11-22 01:08:49,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:08:49,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:08:49,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:49,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:08:49,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:08:49,676 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:49,710 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2024-11-22 01:08:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:08:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-22 01:08:49,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:49,712 INFO L225 Difference]: With dead ends: 49 [2024-11-22 01:08:49,712 INFO L226 Difference]: Without dead ends: 34 [2024-11-22 01:08:49,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:08:49,713 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 40 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:49,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 29 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:08:49,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-22 01:08:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-11-22 01:08:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2024-11-22 01:08:49,725 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 15 [2024-11-22 01:08:49,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:49,725 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2024-11-22 01:08:49,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:49,726 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2024-11-22 01:08:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-22 01:08:49,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:49,726 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:49,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 01:08:49,727 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:49,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:49,729 INFO L85 PathProgramCache]: Analyzing trace with hash 630489455, now seen corresponding path program 1 times [2024-11-22 01:08:49,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:49,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249058454] [2024-11-22 01:08:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:49,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:08:49,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:49,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249058454] [2024-11-22 01:08:49,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249058454] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:08:49,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991430839] [2024-11-22 01:08:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:49,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:08:49,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:08:49,819 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 01:08:49,820 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 01:08:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:49,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 01:08:49,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:08:49,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:08:49,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:08:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:08:50,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991430839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:08:50,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:08:50,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-22 01:08:50,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366968667] [2024-11-22 01:08:50,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:08:50,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 01:08:50,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 01:08:50,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-22 01:08:50,004 INFO L87 Difference]: Start difference. First operand 32 states and 44 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:50,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:50,112 INFO L93 Difference]: Finished difference Result 78 states and 114 transitions. [2024-11-22 01:08:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 01:08:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-22 01:08:50,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:50,116 INFO L225 Difference]: With dead ends: 78 [2024-11-22 01:08:50,116 INFO L226 Difference]: Without dead ends: 50 [2024-11-22 01:08:50,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-22 01:08:50,118 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 57 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:50,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 37 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:08:50,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-22 01:08:50,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-22 01:08:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:50,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-11-22 01:08:50,133 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 15 [2024-11-22 01:08:50,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:50,134 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-11-22 01:08:50,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:50,134 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-11-22 01:08:50,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 01:08:50,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:50,137 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:50,145 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 01:08:50,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:08:50,342 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:50,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:50,343 INFO L85 PathProgramCache]: Analyzing trace with hash -901646477, now seen corresponding path program 2 times [2024-11-22 01:08:50,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:50,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26784056] [2024-11-22 01:08:50,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:08:50,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:50,375 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:08:50,375 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:08:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:08:50,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:50,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26784056] [2024-11-22 01:08:50,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26784056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:08:50,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185088405] [2024-11-22 01:08:50,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:08:50,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:08:50,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:08:50,521 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 01:08:50,522 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 01:08:50,561 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:08:50,562 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:08:50,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 01:08:50,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:08:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:08:50,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:08:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:08:50,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185088405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:08:50,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:08:50,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-22 01:08:50,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588262607] [2024-11-22 01:08:50,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:08:50,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 01:08:50,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:50,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 01:08:50,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-22 01:08:50,792 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:51,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:51,083 INFO L93 Difference]: Finished difference Result 169 states and 233 transitions. [2024-11-22 01:08:51,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 01:08:51,084 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-22 01:08:51,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:51,085 INFO L225 Difference]: With dead ends: 169 [2024-11-22 01:08:51,085 INFO L226 Difference]: Without dead ends: 123 [2024-11-22 01:08:51,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2024-11-22 01:08:51,086 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 129 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:51,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 61 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:08:51,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-22 01:08:51,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 112. [2024-11-22 01:08:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 111 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 144 transitions. [2024-11-22 01:08:51,115 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 144 transitions. Word has length 24 [2024-11-22 01:08:51,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:51,116 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 144 transitions. [2024-11-22 01:08:51,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:51,116 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 144 transitions. [2024-11-22 01:08:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-22 01:08:51,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:51,117 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:51,126 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 01:08:51,318 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,SelfDestructingSolverStorable5 [2024-11-22 01:08:51,318 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:51,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:51,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1057536243, now seen corresponding path program 1 times [2024-11-22 01:08:51,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:51,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948516273] [2024-11-22 01:08:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:51,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:08:51,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:51,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948516273] [2024-11-22 01:08:51,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948516273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:08:51,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:08:51,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 01:08:51,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042684436] [2024-11-22 01:08:51,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:08:51,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:08:51,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:51,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:08:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:08:51,364 INFO L87 Difference]: Start difference. First operand 112 states and 144 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:51,389 INFO L93 Difference]: Finished difference Result 241 states and 315 transitions. [2024-11-22 01:08:51,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:08:51,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-22 01:08:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:51,391 INFO L225 Difference]: With dead ends: 241 [2024-11-22 01:08:51,391 INFO L226 Difference]: Without dead ends: 133 [2024-11-22 01:08:51,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:08:51,392 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:51,393 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:08:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-22 01:08:51,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2024-11-22 01:08:51,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.280373831775701) internal successors, (137), 107 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:51,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 137 transitions. [2024-11-22 01:08:51,409 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 137 transitions. Word has length 24 [2024-11-22 01:08:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:51,410 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 137 transitions. [2024-11-22 01:08:51,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 137 transitions. [2024-11-22 01:08:51,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 01:08:51,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:51,411 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:51,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 01:08:51,411 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:51,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:51,411 INFO L85 PathProgramCache]: Analyzing trace with hash -2131488921, now seen corresponding path program 1 times [2024-11-22 01:08:51,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:51,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444936943] [2024-11-22 01:08:51,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:51,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-22 01:08:51,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:51,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444936943] [2024-11-22 01:08:51,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444936943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:08:51,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:08:51,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 01:08:51,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630259960] [2024-11-22 01:08:51,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:08:51,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:08:51,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:51,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:08:51,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:08:51,468 INFO L87 Difference]: Start difference. First operand 108 states and 137 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:51,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:51,488 INFO L93 Difference]: Finished difference Result 165 states and 211 transitions. [2024-11-22 01:08:51,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:08:51,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-22 01:08:51,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:51,490 INFO L225 Difference]: With dead ends: 165 [2024-11-22 01:08:51,490 INFO L226 Difference]: Without dead ends: 112 [2024-11-22 01:08:51,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:08:51,491 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:51,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:08:51,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-22 01:08:51,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-22 01:08:51,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.2522522522522523) internal successors, (139), 111 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 139 transitions. [2024-11-22 01:08:51,508 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 139 transitions. Word has length 25 [2024-11-22 01:08:51,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:51,508 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 139 transitions. [2024-11-22 01:08:51,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 139 transitions. [2024-11-22 01:08:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 01:08:51,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:51,509 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:51,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 01:08:51,510 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:51,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:51,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2129582297, now seen corresponding path program 1 times [2024-11-22 01:08:51,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:51,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414597357] [2024-11-22 01:08:51,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:51,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:08:51,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414597357] [2024-11-22 01:08:51,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414597357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:08:51,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904101870] [2024-11-22 01:08:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:51,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:08:51,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:08:51,611 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 01:08:51,612 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 01:08:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:51,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:08:51,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:08:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:08:51,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:08:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:08:51,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904101870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:08:51,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:08:51,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-22 01:08:51,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128483977] [2024-11-22 01:08:51,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:08:51,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 01:08:51,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:51,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 01:08:51,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-22 01:08:51,908 INFO L87 Difference]: Start difference. First operand 112 states and 139 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:52,107 INFO L93 Difference]: Finished difference Result 328 states and 442 transitions. [2024-11-22 01:08:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 01:08:52,108 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-22 01:08:52,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:52,110 INFO L225 Difference]: With dead ends: 328 [2024-11-22 01:08:52,112 INFO L226 Difference]: Without dead ends: 220 [2024-11-22 01:08:52,113 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-22 01:08:52,114 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 63 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:52,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 42 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:08:52,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-22 01:08:52,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2024-11-22 01:08:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.2374429223744292) internal successors, (271), 219 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 271 transitions. [2024-11-22 01:08:52,153 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 271 transitions. Word has length 25 [2024-11-22 01:08:52,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:52,153 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 271 transitions. [2024-11-22 01:08:52,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:52,153 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 271 transitions. [2024-11-22 01:08:52,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-22 01:08:52,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:52,156 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:52,164 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 01:08:52,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:08:52,357 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:52,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:52,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1593832537, now seen corresponding path program 2 times [2024-11-22 01:08:52,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:52,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668598084] [2024-11-22 01:08:52,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:08:52,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:52,377 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:08:52,377 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:08:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:08:52,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:52,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668598084] [2024-11-22 01:08:52,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668598084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:08:52,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077336295] [2024-11-22 01:08:52,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:08:52,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:08:52,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:08:52,607 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 01:08:52,610 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 01:08:52,653 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:08:52,653 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:08:52,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 01:08:52,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:08:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:08:52,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:08:53,180 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:08:53,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077336295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:08:53,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:08:53,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-22 01:08:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049166247] [2024-11-22 01:08:53,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:08:53,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-22 01:08:53,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:53,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-22 01:08:53,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 01:08:53,182 INFO L87 Difference]: Start difference. First operand 220 states and 271 transitions. Second operand has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:53,591 INFO L93 Difference]: Finished difference Result 652 states and 874 transitions. [2024-11-22 01:08:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 01:08:53,591 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-22 01:08:53,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:53,594 INFO L225 Difference]: With dead ends: 652 [2024-11-22 01:08:53,594 INFO L226 Difference]: Without dead ends: 436 [2024-11-22 01:08:53,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2024-11-22 01:08:53,598 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 133 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:53,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 54 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 01:08:53,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-22 01:08:53,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2024-11-22 01:08:53,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 1.2298850574712643) internal successors, (535), 435 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 535 transitions. [2024-11-22 01:08:53,628 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 535 transitions. Word has length 43 [2024-11-22 01:08:53,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:53,628 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 535 transitions. [2024-11-22 01:08:53,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.0) internal successors, (111), 36 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 535 transitions. [2024-11-22 01:08:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 01:08:53,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:53,636 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:53,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 01:08:53,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:08:53,841 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:53,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:53,841 INFO L85 PathProgramCache]: Analyzing trace with hash 48592039, now seen corresponding path program 3 times [2024-11-22 01:08:53,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:53,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048262429] [2024-11-22 01:08:53,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:08:53,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:53,858 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 01:08:53,862 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:08:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-11-22 01:08:54,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:54,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048262429] [2024-11-22 01:08:54,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048262429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:08:54,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:08:54,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 01:08:54,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939250027] [2024-11-22 01:08:54,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:08:54,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 01:08:54,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:54,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 01:08:54,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:08:54,012 INFO L87 Difference]: Start difference. First operand 436 states and 535 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:54,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:54,104 INFO L93 Difference]: Finished difference Result 651 states and 800 transitions. [2024-11-22 01:08:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 01:08:54,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-22 01:08:54,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:54,107 INFO L225 Difference]: With dead ends: 651 [2024-11-22 01:08:54,107 INFO L226 Difference]: Without dead ends: 649 [2024-11-22 01:08:54,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 01:08:54,108 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:54,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:08:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-22 01:08:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2024-11-22 01:08:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 1.228395061728395) internal successors, (796), 648 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 796 transitions. [2024-11-22 01:08:54,147 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 796 transitions. Word has length 79 [2024-11-22 01:08:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:54,147 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 796 transitions. [2024-11-22 01:08:54,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:54,147 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 796 transitions. [2024-11-22 01:08:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 01:08:54,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:54,148 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:54,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 01:08:54,149 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:54,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:54,149 INFO L85 PathProgramCache]: Analyzing trace with hash -985230169, now seen corresponding path program 1 times [2024-11-22 01:08:54,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:54,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609074769] [2024-11-22 01:08:54,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:54,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-22 01:08:54,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:54,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609074769] [2024-11-22 01:08:54,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609074769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:08:54,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:08:54,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:08:54,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465541944] [2024-11-22 01:08:54,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:08:54,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:08:54,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:54,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:08:54,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:08:54,302 INFO L87 Difference]: Start difference. First operand 649 states and 796 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:54,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:54,386 INFO L93 Difference]: Finished difference Result 1085 states and 1331 transitions. [2024-11-22 01:08:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:08:54,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-22 01:08:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:54,390 INFO L225 Difference]: With dead ends: 1085 [2024-11-22 01:08:54,390 INFO L226 Difference]: Without dead ends: 868 [2024-11-22 01:08:54,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 01:08:54,391 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 61 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:54,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 39 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:08:54,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2024-11-22 01:08:54,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 789. [2024-11-22 01:08:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 1.2461928934010151) internal successors, (982), 788 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 982 transitions. [2024-11-22 01:08:54,446 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 982 transitions. Word has length 79 [2024-11-22 01:08:54,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:54,446 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 982 transitions. [2024-11-22 01:08:54,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:54,447 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 982 transitions. [2024-11-22 01:08:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-22 01:08:54,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:54,448 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:54,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 01:08:54,449 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:54,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:54,449 INFO L85 PathProgramCache]: Analyzing trace with hash 481659748, now seen corresponding path program 1 times [2024-11-22 01:08:54,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:54,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207318140] [2024-11-22 01:08:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:54,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2934 backedges. 1498 proven. 715 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2024-11-22 01:08:55,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:08:55,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207318140] [2024-11-22 01:08:55,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207318140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:08:55,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288652964] [2024-11-22 01:08:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:08:55,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:08:55,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:08:55,285 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 01:08:55,286 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 01:08:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:08:55,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 01:08:55,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:08:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2934 backedges. 1498 proven. 715 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2024-11-22 01:08:56,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:08:56,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2934 backedges. 1498 proven. 715 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2024-11-22 01:08:56,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288652964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:08:56,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:08:56,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2024-11-22 01:08:56,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861397996] [2024-11-22 01:08:56,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:08:56,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-22 01:08:56,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:08:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-22 01:08:57,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=2949, Unknown=0, NotChecked=0, Total=5256 [2024-11-22 01:08:57,001 INFO L87 Difference]: Start difference. First operand 789 states and 982 transitions. Second operand has 73 states, 73 states have (on average 3.095890410958904) internal successors, (226), 72 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:58,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:08:58,141 INFO L93 Difference]: Finished difference Result 2171 states and 2968 transitions. [2024-11-22 01:08:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-22 01:08:58,142 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.095890410958904) internal successors, (226), 72 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2024-11-22 01:08:58,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:08:58,147 INFO L225 Difference]: With dead ends: 2171 [2024-11-22 01:08:58,147 INFO L226 Difference]: Without dead ends: 1581 [2024-11-22 01:08:58,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3217 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3480, Invalid=5640, Unknown=0, NotChecked=0, Total=9120 [2024-11-22 01:08:58,151 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 413 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 01:08:58,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 42 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 01:08:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2024-11-22 01:08:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2024-11-22 01:08:58,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.2443037974683544) internal successors, (1966), 1580 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:58,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 1966 transitions. [2024-11-22 01:08:58,246 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 1966 transitions. Word has length 154 [2024-11-22 01:08:58,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:08:58,246 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 1966 transitions. [2024-11-22 01:08:58,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.095890410958904) internal successors, (226), 72 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:08:58,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 1966 transitions. [2024-11-22 01:08:58,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2024-11-22 01:08:58,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:08:58,251 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:08:58,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 01:08:58,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 01:08:58,452 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:08:58,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:08:58,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1987848604, now seen corresponding path program 2 times [2024-11-22 01:08:58,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:08:58,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124295275] [2024-11-22 01:08:58,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:08:58,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:08:58,515 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:08:58,516 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:09:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 12750 backedges. 6442 proven. 3151 refuted. 0 times theorem prover too weak. 3157 trivial. 0 not checked. [2024-11-22 01:09:00,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:09:00,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124295275] [2024-11-22 01:09:00,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124295275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:09:00,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510618418] [2024-11-22 01:09:00,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:09:00,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:09:00,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:09:00,704 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 01:09:00,706 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 01:09:00,819 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:09:00,819 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:09:00,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-22 01:09:00,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:09:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12750 backedges. 6442 proven. 3151 refuted. 0 times theorem prover too weak. 3157 trivial. 0 not checked. [2024-11-22 01:09:02,344 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:09:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12750 backedges. 6442 proven. 3151 refuted. 0 times theorem prover too weak. 3157 trivial. 0 not checked. [2024-11-22 01:09:04,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510618418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:09:04,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:09:04,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 144 [2024-11-22 01:09:04,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124109758] [2024-11-22 01:09:04,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:09:04,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2024-11-22 01:09:04,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:09:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2024-11-22 01:09:04,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9219, Invalid=11661, Unknown=0, NotChecked=0, Total=20880 [2024-11-22 01:09:04,970 INFO L87 Difference]: Start difference. First operand 1581 states and 1966 transitions. Second operand has 145 states, 145 states have (on average 3.0482758620689654) internal successors, (442), 144 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:09:08,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:09:08,289 INFO L93 Difference]: Finished difference Result 4331 states and 5920 transitions. [2024-11-22 01:09:08,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-22 01:09:08,289 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 145 states have (on average 3.0482758620689654) internal successors, (442), 144 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 298 [2024-11-22 01:09:08,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:09:08,302 INFO L225 Difference]: With dead ends: 4331 [2024-11-22 01:09:08,302 INFO L226 Difference]: Without dead ends: 3165 [2024-11-22 01:09:08,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13345 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=13872, Invalid=22800, Unknown=0, NotChecked=0, Total=36672 [2024-11-22 01:09:08,312 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 684 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 01:09:08,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 36 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 01:09:08,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2024-11-22 01:09:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 3165. [2024-11-22 01:09:08,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3164 states have (on average 1.2433628318584071) internal successors, (3934), 3164 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:09:08,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 3934 transitions. [2024-11-22 01:09:08,485 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 3934 transitions. Word has length 298 [2024-11-22 01:09:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:09:08,486 INFO L471 AbstractCegarLoop]: Abstraction has 3165 states and 3934 transitions. [2024-11-22 01:09:08,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 3.0482758620689654) internal successors, (442), 144 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:09:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 3934 transitions. [2024-11-22 01:09:08,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2024-11-22 01:09:08,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:09:08,498 INFO L215 NwaCegarLoop]: trace histogram [188, 188, 188, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:09:08,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 01:09:08,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:09:08,699 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:09:08,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:09:08,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1907584100, now seen corresponding path program 3 times [2024-11-22 01:09:08,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:09:08,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272864092] [2024-11-22 01:09:08,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:09:08,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:09:08,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-22 01:09:08,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:09:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 53118 backedges. 26890 proven. 0 refuted. 0 times theorem prover too weak. 26228 trivial. 0 not checked. [2024-11-22 01:09:08,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:09:08,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272864092] [2024-11-22 01:09:08,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272864092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:09:08,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:09:08,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 01:09:08,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130545786] [2024-11-22 01:09:08,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:09:08,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 01:09:08,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:09:08,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 01:09:08,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:09:08,810 INFO L87 Difference]: Start difference. First operand 3165 states and 3934 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:09:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:09:08,936 INFO L93 Difference]: Finished difference Result 3167 states and 3935 transitions. [2024-11-22 01:09:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 01:09:08,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 586 [2024-11-22 01:09:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:09:08,946 INFO L225 Difference]: With dead ends: 3167 [2024-11-22 01:09:08,946 INFO L226 Difference]: Without dead ends: 2296 [2024-11-22 01:09:08,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 01:09:08,950 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:09:08,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:09:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2024-11-22 01:09:09,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2296. [2024-11-22 01:09:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2295 states have (on average 1.3311546840958606) internal successors, (3055), 2295 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:09:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3055 transitions. [2024-11-22 01:09:09,145 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3055 transitions. Word has length 586 [2024-11-22 01:09:09,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:09:09,146 INFO L471 AbstractCegarLoop]: Abstraction has 2296 states and 3055 transitions. [2024-11-22 01:09:09,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:09:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3055 transitions. [2024-11-22 01:09:09,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2024-11-22 01:09:09,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:09:09,158 INFO L215 NwaCegarLoop]: trace histogram [188, 188, 186, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:09:09,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 01:09:09,158 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:09:09,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:09:09,159 INFO L85 PathProgramCache]: Analyzing trace with hash 658504804, now seen corresponding path program 1 times [2024-11-22 01:09:09,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:09:09,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125377367] [2024-11-22 01:09:09,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:09:09,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:09:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:09:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 53118 backedges. 26698 proven. 13207 refuted. 0 times theorem prover too weak. 13213 trivial. 0 not checked. [2024-11-22 01:09:16,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:09:16,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125377367] [2024-11-22 01:09:16,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125377367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:09:16,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810288768] [2024-11-22 01:09:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:09:16,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:09:16,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:09:16,072 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 01:09:16,075 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 01:09:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:09:16,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-22 01:09:16,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:09:20,632 INFO L134 CoverageAnalysis]: Checked inductivity of 53118 backedges. 26698 proven. 13207 refuted. 0 times theorem prover too weak. 13213 trivial. 0 not checked. [2024-11-22 01:09:20,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:09:30,779 INFO L134 CoverageAnalysis]: Checked inductivity of 53118 backedges. 26698 proven. 13207 refuted. 0 times theorem prover too weak. 13213 trivial. 0 not checked. [2024-11-22 01:09:30,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810288768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:09:30,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:09:30,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 288 [2024-11-22 01:09:30,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229128976] [2024-11-22 01:09:30,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:09:30,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 289 states [2024-11-22 01:09:30,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:09:30,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 289 interpolants. [2024-11-22 01:09:30,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36867, Invalid=46365, Unknown=0, NotChecked=0, Total=83232 [2024-11-22 01:09:30,800 INFO L87 Difference]: Start difference. First operand 2296 states and 3055 transitions. Second operand has 289 states, 289 states have (on average 3.027681660899654) internal successors, (875), 288 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:09:45,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:09:45,453 INFO L93 Difference]: Finished difference Result 6330 states and 9197 transitions. [2024-11-22 01:09:45,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2024-11-22 01:09:45,454 INFO L78 Accepts]: Start accepts. Automaton has has 289 states, 289 states have (on average 3.027681660899654) internal successors, (875), 288 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 586 [2024-11-22 01:09:45,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:09:45,471 INFO L225 Difference]: With dead ends: 6330 [2024-11-22 01:09:45,472 INFO L226 Difference]: Without dead ends: 4600 [2024-11-22 01:09:45,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1362 GetRequests, 980 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54337 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=55392, Invalid=91680, Unknown=0, NotChecked=0, Total=147072 [2024-11-22 01:09:45,483 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1385 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 01:09:45,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 48 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 01:09:45,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4600 states. [2024-11-22 01:09:45,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4600 to 4600. [2024-11-22 01:09:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4600 states, 4599 states have (on average 1.3322461404653185) internal successors, (6127), 4599 states have internal predecessors, (6127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:09:45,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4600 states to 4600 states and 6127 transitions. [2024-11-22 01:09:45,759 INFO L78 Accepts]: Start accepts. Automaton has 4600 states and 6127 transitions. Word has length 586 [2024-11-22 01:09:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:09:45,760 INFO L471 AbstractCegarLoop]: Abstraction has 4600 states and 6127 transitions. [2024-11-22 01:09:45,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 289 states, 289 states have (on average 3.027681660899654) internal successors, (875), 288 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:09:45,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4600 states and 6127 transitions. [2024-11-22 01:09:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2024-11-22 01:09:45,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:09:45,804 INFO L215 NwaCegarLoop]: trace histogram [380, 380, 378, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:09:45,814 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 01:09:46,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:09:46,005 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:09:46,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:09:46,005 INFO L85 PathProgramCache]: Analyzing trace with hash -845797276, now seen corresponding path program 2 times [2024-11-22 01:09:46,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:09:46,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349256991] [2024-11-22 01:09:46,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:09:46,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:09:46,358 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:09:46,358 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat