./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/in-de31.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 28f1f7a35f3c64149ac63836a12126d2f43ea1d4c4384507ba9d3ae156113818 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 19:49:25,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 19:49:25,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 19:49:25,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 19:49:25,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 19:49:26,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 19:49:26,005 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 19:49:26,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 19:49:26,007 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 19:49:26,008 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 19:49:26,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 19:49:26,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 19:49:26,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 19:49:26,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 19:49:26,011 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 19:49:26,012 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 19:49:26,012 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 19:49:26,012 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 19:49:26,012 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 19:49:26,013 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 19:49:26,013 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 19:49:26,013 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 19:49:26,014 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 19:49:26,014 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 19:49:26,014 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 19:49:26,014 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 19:49:26,015 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 19:49:26,015 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 19:49:26,015 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 19:49:26,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 19:49:26,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 19:49:26,016 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 19:49:26,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 19:49:26,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 19:49:26,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 19:49:26,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 19:49:26,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 19:49:26,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 19:49:26,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 19:49:26,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 19:49:26,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 19:49:26,020 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 19:49:26,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28f1f7a35f3c64149ac63836a12126d2f43ea1d4c4384507ba9d3ae156113818 [2024-11-11 19:49:26,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 19:49:26,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 19:49:26,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 19:49:26,334 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 19:49:26,335 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 19:49:26,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de31.c [2024-11-11 19:49:27,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 19:49:27,988 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 19:49:27,989 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de31.c [2024-11-11 19:49:27,996 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c27bb7726/fe2f268648564bf6a0e626d4a4991732/FLAG9a1d44ff8 [2024-11-11 19:49:28,025 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c27bb7726/fe2f268648564bf6a0e626d4a4991732 [2024-11-11 19:49:28,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 19:49:28,029 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 19:49:28,030 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 19:49:28,030 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 19:49:28,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 19:49:28,042 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbb3253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28, skipping insertion in model container [2024-11-11 19:49:28,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,085 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 19:49:28,265 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/in-de31.c[368,381] [2024-11-11 19:49:28,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 19:49:28,289 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 19:49:28,298 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/in-de31.c[368,381] [2024-11-11 19:49:28,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 19:49:28,318 INFO L204 MainTranslator]: Completed translation [2024-11-11 19:49:28,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28 WrapperNode [2024-11-11 19:49:28,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 19:49:28,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 19:49:28,321 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 19:49:28,321 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 19:49:28,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,332 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,347 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-11 19:49:28,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 19:49:28,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 19:49:28,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 19:49:28,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 19:49:28,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,358 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,367 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]. [2024-11-11 19:49:28,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,373 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 19:49:28,378 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 19:49:28,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 19:49:28,378 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 19:49:28,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (1/1) ... [2024-11-11 19:49:28,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 19:49:28,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:28,412 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) [2024-11-11 19:49:28,414 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 [2024-11-11 19:49:28,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 19:49:28,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 19:49:28,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 19:49:28,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 19:49:28,534 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 19:49:28,538 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 19:49:28,702 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-11 19:49:28,703 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 19:49:28,719 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 19:49:28,720 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-11 19:49:28,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 07:49:28 BoogieIcfgContainer [2024-11-11 19:49:28,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 19:49:28,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 19:49:28,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 19:49:28,728 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 19:49:28,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 07:49:28" (1/3) ... [2024-11-11 19:49:28,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cd5700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 07:49:28, skipping insertion in model container [2024-11-11 19:49:28,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 07:49:28" (2/3) ... [2024-11-11 19:49:28,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cd5700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 07:49:28, skipping insertion in model container [2024-11-11 19:49:28,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 07:49:28" (3/3) ... [2024-11-11 19:49:28,733 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de31.c [2024-11-11 19:49:28,750 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 19:49:28,751 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 19:49:28,818 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 19:49:28,827 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;@3fefa937, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 19:49:28,828 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 19:49:28,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 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) [2024-11-11 19:49:28,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-11 19:49:28,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:28,839 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:28,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:28,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:28,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1157484939, now seen corresponding path program 1 times [2024-11-11 19:49:28,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:28,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682251065] [2024-11-11 19:49:28,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:28,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:29,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:29,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682251065] [2024-11-11 19:49:29,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682251065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 19:49:29,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 19:49:29,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-11 19:49:29,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099500340] [2024-11-11 19:49:29,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 19:49:29,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-11 19:49:29,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:29,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-11 19:49:29,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-11 19:49:29,493 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 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 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2024-11-11 19:49:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:29,593 INFO L93 Difference]: Finished difference Result 31 states and 48 transitions. [2024-11-11 19:49:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-11 19:49:29,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2024-11-11 19:49:29,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:29,607 INFO L225 Difference]: With dead ends: 31 [2024-11-11 19:49:29,607 INFO L226 Difference]: Without dead ends: 11 [2024-11-11 19:49:29,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-11 19:49:29,614 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:29,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 19:49:29,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-11 19:49:29,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-11 19:49:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2024-11-11 19:49:29,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2024-11-11 19:49:29,645 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2024-11-11 19:49:29,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:29,645 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2024-11-11 19:49:29,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2024-11-11 19:49:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2024-11-11 19:49:29,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-11 19:49:29,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:29,647 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:29,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 19:49:29,648 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:29,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:29,649 INFO L85 PathProgramCache]: Analyzing trace with hash 722526704, now seen corresponding path program 1 times [2024-11-11 19:49:29,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:29,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615065062] [2024-11-11 19:49:29,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:29,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:29,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:29,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615065062] [2024-11-11 19:49:29,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615065062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:29,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657656044] [2024-11-11 19:49:29,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:29,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:29,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:29,785 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) [2024-11-11 19:49:29,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-11 19:49:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:29,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-11 19:49:29,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:29,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:29,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657656044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:29,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:29,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-11 19:49:29,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532879417] [2024-11-11 19:49:29,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:29,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-11 19:49:29,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:29,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-11 19:49:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-11 19:49:29,998 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2024-11-11 19:49:30,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:30,147 INFO L93 Difference]: Finished difference Result 33 states and 49 transitions. [2024-11-11 19:49:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-11 19:49:30,148 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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 10 [2024-11-11 19:49:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:30,153 INFO L225 Difference]: With dead ends: 33 [2024-11-11 19:49:30,154 INFO L226 Difference]: Without dead ends: 28 [2024-11-11 19:49:30,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-11 19:49:30,155 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:30,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 36 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:49:30,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-11 19:49:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-11-11 19:49:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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) [2024-11-11 19:49:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2024-11-11 19:49:30,170 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 10 [2024-11-11 19:49:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:30,170 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2024-11-11 19:49:30,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 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) [2024-11-11 19:49:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2024-11-11 19:49:30,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-11 19:49:30,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:30,172 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:30,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-11 19:49:30,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:30,377 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:30,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:30,378 INFO L85 PathProgramCache]: Analyzing trace with hash 19581631, now seen corresponding path program 1 times [2024-11-11 19:49:30,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:30,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385907773] [2024-11-11 19:49:30,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:30,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:30,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:30,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:30,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385907773] [2024-11-11 19:49:30,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385907773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:30,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565823048] [2024-11-11 19:49:30,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:30,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:30,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:30,807 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) [2024-11-11 19:49:30,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-11 19:49:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:30,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-11 19:49:30,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:31,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:31,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:31,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565823048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:31,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:31,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-11-11 19:49:31,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670783661] [2024-11-11 19:49:31,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:31,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-11 19:49:31,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:31,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-11 19:49:31,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-11 19:49:31,235 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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) [2024-11-11 19:49:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:31,708 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2024-11-11 19:49:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-11 19:49:31,709 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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 12 [2024-11-11 19:49:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:31,710 INFO L225 Difference]: With dead ends: 40 [2024-11-11 19:49:31,710 INFO L226 Difference]: Without dead ends: 25 [2024-11-11 19:49:31,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2024-11-11 19:49:31,712 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:31,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 19:49:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-11 19:49:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2024-11-11 19:49:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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) [2024-11-11 19:49:31,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-11 19:49:31,721 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 12 [2024-11-11 19:49:31,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:31,721 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-11 19:49:31,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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) [2024-11-11 19:49:31,722 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2024-11-11 19:49:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-11 19:49:31,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:31,723 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:31,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-11 19:49:31,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-11 19:49:31,924 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:31,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:31,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1563380427, now seen corresponding path program 2 times [2024-11-11 19:49:31,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:31,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777379271] [2024-11-11 19:49:31,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:31,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:32,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:32,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777379271] [2024-11-11 19:49:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777379271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:32,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278423772] [2024-11-11 19:49:32,046 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 19:49:32,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:32,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:32,048 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) [2024-11-11 19:49:32,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-11 19:49:32,092 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 19:49:32,092 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:49:32,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-11 19:49:32,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:32,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:32,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278423772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:32,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:32,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-11 19:49:32,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972228892] [2024-11-11 19:49:32,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:32,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-11 19:49:32,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-11 19:49:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-11 19:49:32,221 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 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) [2024-11-11 19:49:32,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:32,789 INFO L93 Difference]: Finished difference Result 71 states and 112 transitions. [2024-11-11 19:49:32,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-11 19:49:32,790 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 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) Word has length 13 [2024-11-11 19:49:32,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:32,791 INFO L225 Difference]: With dead ends: 71 [2024-11-11 19:49:32,792 INFO L226 Difference]: Without dead ends: 66 [2024-11-11 19:49:32,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2024-11-11 19:49:32,793 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 133 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:32,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 78 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 19:49:32,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-11 19:49:32,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 39. [2024-11-11 19:49:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 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) [2024-11-11 19:49:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2024-11-11 19:49:32,815 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 13 [2024-11-11 19:49:32,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:32,815 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2024-11-11 19:49:32,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 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) [2024-11-11 19:49:32,815 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2024-11-11 19:49:32,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-11 19:49:32,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:32,816 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:32,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-11 19:49:33,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:33,021 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:33,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:33,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1098222449, now seen corresponding path program 2 times [2024-11-11 19:49:33,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:33,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280563339] [2024-11-11 19:49:33,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:33,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 19:49:33,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:33,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280563339] [2024-11-11 19:49:33,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280563339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:33,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629969663] [2024-11-11 19:49:33,108 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 19:49:33,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:33,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:33,110 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) [2024-11-11 19:49:33,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-11 19:49:33,152 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 19:49:33,152 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:49:33,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-11 19:49:33,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 19:49:33,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 19:49:33,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629969663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:33,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:33,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-11 19:49:33,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66641] [2024-11-11 19:49:33,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:33,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-11 19:49:33,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-11 19:49:33,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-11 19:49:33,269 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2024-11-11 19:49:33,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:33,391 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2024-11-11 19:49:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-11 19:49:33,395 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) Word has length 14 [2024-11-11 19:49:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:33,395 INFO L225 Difference]: With dead ends: 65 [2024-11-11 19:49:33,396 INFO L226 Difference]: Without dead ends: 55 [2024-11-11 19:49:33,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-11 19:49:33,396 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:33,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 38 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:49:33,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-11 19:49:33,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2024-11-11 19:49:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 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) [2024-11-11 19:49:33,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2024-11-11 19:49:33,421 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 14 [2024-11-11 19:49:33,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:33,421 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2024-11-11 19:49:33,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 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) [2024-11-11 19:49:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2024-11-11 19:49:33,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-11 19:49:33,423 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:33,423 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:33,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-11 19:49:33,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:33,624 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:33,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:33,624 INFO L85 PathProgramCache]: Analyzing trace with hash 854515253, now seen corresponding path program 3 times [2024-11-11 19:49:33,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:33,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709978145] [2024-11-11 19:49:33,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:33,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:34,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:34,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709978145] [2024-11-11 19:49:34,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709978145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:34,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801898893] [2024-11-11 19:49:34,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 19:49:34,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:34,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:34,022 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) [2024-11-11 19:49:34,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-11 19:49:34,068 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-11 19:49:34,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:49:34,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-11 19:49:34,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:34,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:34,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:34,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801898893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:34,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:34,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2024-11-11 19:49:34,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126341073] [2024-11-11 19:49:34,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:34,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-11 19:49:34,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-11 19:49:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2024-11-11 19:49:34,629 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 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) [2024-11-11 19:49:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:35,984 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2024-11-11 19:49:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-11 19:49:35,985 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 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 [2024-11-11 19:49:35,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:35,986 INFO L225 Difference]: With dead ends: 86 [2024-11-11 19:49:35,986 INFO L226 Difference]: Without dead ends: 65 [2024-11-11 19:49:35,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=267, Invalid=1625, Unknown=0, NotChecked=0, Total=1892 [2024-11-11 19:49:35,987 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 26 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:35,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 70 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 19:49:35,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-11 19:49:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2024-11-11 19:49:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 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) [2024-11-11 19:49:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2024-11-11 19:49:36,014 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 15 [2024-11-11 19:49:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:36,014 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2024-11-11 19:49:36,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 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) [2024-11-11 19:49:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2024-11-11 19:49:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-11 19:49:36,015 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:36,015 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:36,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-11 19:49:36,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:36,220 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:36,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:36,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1966551549, now seen corresponding path program 4 times [2024-11-11 19:49:36,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:36,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226014752] [2024-11-11 19:49:36,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:36,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 19:49:36,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:36,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226014752] [2024-11-11 19:49:36,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226014752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:36,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499629122] [2024-11-11 19:49:36,330 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 19:49:36,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:36,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:36,332 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) [2024-11-11 19:49:36,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-11 19:49:36,376 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 19:49:36,376 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:49:36,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-11 19:49:36,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 19:49:36,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-11 19:49:36,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499629122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:36,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:36,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2024-11-11 19:49:36,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014596957] [2024-11-11 19:49:36,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:36,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-11 19:49:36,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:36,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-11 19:49:36,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-11 19:49:36,557 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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) [2024-11-11 19:49:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:36,802 INFO L93 Difference]: Finished difference Result 77 states and 105 transitions. [2024-11-11 19:49:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-11 19:49:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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 17 [2024-11-11 19:49:36,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:36,805 INFO L225 Difference]: With dead ends: 77 [2024-11-11 19:49:36,805 INFO L226 Difference]: Without dead ends: 62 [2024-11-11 19:49:36,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-11 19:49:36,806 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:36,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 49 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:49:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-11 19:49:36,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2024-11-11 19:49:36,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 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) [2024-11-11 19:49:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2024-11-11 19:49:36,833 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 17 [2024-11-11 19:49:36,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:36,834 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2024-11-11 19:49:36,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 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) [2024-11-11 19:49:36,835 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2024-11-11 19:49:36,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-11 19:49:36,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:36,835 INFO L218 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:36,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-11 19:49:37,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:37,036 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:37,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:37,037 INFO L85 PathProgramCache]: Analyzing trace with hash -73381852, now seen corresponding path program 5 times [2024-11-11 19:49:37,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:37,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853315862] [2024-11-11 19:49:37,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:37,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:37,183 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 19:49:37,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:37,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853315862] [2024-11-11 19:49:37,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853315862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:37,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480092988] [2024-11-11 19:49:37,184 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 19:49:37,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:37,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:37,186 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) [2024-11-11 19:49:37,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-11 19:49:37,228 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-11 19:49:37,228 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:49:37,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-11 19:49:37,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 19:49:37,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 19:49:37,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480092988] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:37,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:37,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-11 19:49:37,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944714901] [2024-11-11 19:49:37,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:37,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-11 19:49:37,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:37,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-11 19:49:37,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-11 19:49:37,437 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 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) [2024-11-11 19:49:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:39,499 INFO L93 Difference]: Finished difference Result 147 states and 216 transitions. [2024-11-11 19:49:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-11 19:49:39,500 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 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 17 [2024-11-11 19:49:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:39,501 INFO L225 Difference]: With dead ends: 147 [2024-11-11 19:49:39,501 INFO L226 Difference]: Without dead ends: 138 [2024-11-11 19:49:39,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1353, Invalid=3617, Unknown=0, NotChecked=0, Total=4970 [2024-11-11 19:49:39,503 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 223 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:39,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 125 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 19:49:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-11 19:49:39,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 71. [2024-11-11 19:49:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4) internal successors, (98), 70 states have internal predecessors, (98), 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) [2024-11-11 19:49:39,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2024-11-11 19:49:39,528 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 17 [2024-11-11 19:49:39,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:39,528 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2024-11-11 19:49:39,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 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) [2024-11-11 19:49:39,528 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2024-11-11 19:49:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-11 19:49:39,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:39,529 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:39,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-11 19:49:39,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:39,730 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:39,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1333529985, now seen corresponding path program 6 times [2024-11-11 19:49:39,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:39,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630539379] [2024-11-11 19:49:39,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:39,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:40,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:40,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630539379] [2024-11-11 19:49:40,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630539379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:40,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919871051] [2024-11-11 19:49:40,240 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 19:49:40,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:40,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:40,242 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:49:40,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-11 19:49:40,295 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-11 19:49:40,295 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:49:40,296 WARN L254 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-11 19:49:40,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:40,779 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:40,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:41,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919871051] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:41,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:41,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 33 [2024-11-11 19:49:41,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237745590] [2024-11-11 19:49:41,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:41,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-11 19:49:41,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:41,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-11 19:49:41,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2024-11-11 19:49:41,347 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 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) [2024-11-11 19:49:43,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:43,420 INFO L93 Difference]: Finished difference Result 122 states and 158 transitions. [2024-11-11 19:49:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-11 19:49:43,421 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 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 18 [2024-11-11 19:49:43,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:43,422 INFO L225 Difference]: With dead ends: 122 [2024-11-11 19:49:43,422 INFO L226 Difference]: Without dead ends: 96 [2024-11-11 19:49:43,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=353, Invalid=2509, Unknown=0, NotChecked=0, Total=2862 [2024-11-11 19:49:43,423 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:43,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 90 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-11 19:49:43,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-11 19:49:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2024-11-11 19:49:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 69 states have internal predecessors, (95), 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) [2024-11-11 19:49:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 95 transitions. [2024-11-11 19:49:43,452 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 95 transitions. Word has length 18 [2024-11-11 19:49:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:43,452 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 95 transitions. [2024-11-11 19:49:43,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 33 states have internal predecessors, (47), 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) [2024-11-11 19:49:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 95 transitions. [2024-11-11 19:49:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-11 19:49:43,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:43,453 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:43,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-11 19:49:43,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-11 19:49:43,654 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:43,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:43,655 INFO L85 PathProgramCache]: Analyzing trace with hash 159423631, now seen corresponding path program 7 times [2024-11-11 19:49:43,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:43,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434106329] [2024-11-11 19:49:43,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:43,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-11 19:49:43,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434106329] [2024-11-11 19:49:43,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434106329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516804696] [2024-11-11 19:49:43,792 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 19:49:43,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:43,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:43,794 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:49:43,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-11 19:49:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:43,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-11 19:49:43,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-11 19:49:43,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-11 19:49:44,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516804696] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:44,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:44,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2024-11-11 19:49:44,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015276056] [2024-11-11 19:49:44,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:44,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-11 19:49:44,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-11 19:49:44,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-11 19:49:44,067 INFO L87 Difference]: Start difference. First operand 70 states and 95 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 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) [2024-11-11 19:49:44,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:44,342 INFO L93 Difference]: Finished difference Result 112 states and 153 transitions. [2024-11-11 19:49:44,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-11 19:49:44,342 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 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 20 [2024-11-11 19:49:44,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:44,343 INFO L225 Difference]: With dead ends: 112 [2024-11-11 19:49:44,343 INFO L226 Difference]: Without dead ends: 94 [2024-11-11 19:49:44,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2024-11-11 19:49:44,344 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:44,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 65 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 19:49:44,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-11 19:49:44,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 77. [2024-11-11 19:49:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.381578947368421) internal successors, (105), 76 states have internal predecessors, (105), 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) [2024-11-11 19:49:44,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2024-11-11 19:49:44,378 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 20 [2024-11-11 19:49:44,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:44,378 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2024-11-11 19:49:44,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 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) [2024-11-11 19:49:44,378 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2024-11-11 19:49:44,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-11 19:49:44,379 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:44,379 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:44,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-11 19:49:44,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-11 19:49:44,580 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:44,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:44,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2017092107, now seen corresponding path program 8 times [2024-11-11 19:49:44,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:44,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533744992] [2024-11-11 19:49:44,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:44,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:45,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:45,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533744992] [2024-11-11 19:49:45,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533744992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:45,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688710990] [2024-11-11 19:49:45,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 19:49:45,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:45,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:45,117 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:49:45,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-11 19:49:45,172 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 19:49:45,172 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:49:45,173 WARN L254 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-11 19:49:45,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:45,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:46,234 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:46,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688710990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:46,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:46,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 40 [2024-11-11 19:49:46,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141693090] [2024-11-11 19:49:46,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:46,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-11 19:49:46,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:46,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-11 19:49:46,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1378, Unknown=0, NotChecked=0, Total=1560 [2024-11-11 19:49:46,236 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand has 40 states, 40 states have (on average 1.4) internal successors, (56), 40 states have internal predecessors, (56), 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) [2024-11-11 19:49:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:49,555 INFO L93 Difference]: Finished difference Result 137 states and 176 transitions. [2024-11-11 19:49:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-11 19:49:49,555 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.4) internal successors, (56), 40 states have internal predecessors, (56), 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 21 [2024-11-11 19:49:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:49,556 INFO L225 Difference]: With dead ends: 137 [2024-11-11 19:49:49,556 INFO L226 Difference]: Without dead ends: 104 [2024-11-11 19:49:49,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=474, Invalid=3816, Unknown=0, NotChecked=0, Total=4290 [2024-11-11 19:49:49,557 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:49,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 118 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-11 19:49:49,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-11 19:49:49,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 71. [2024-11-11 19:49:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4) internal successors, (98), 70 states have internal predecessors, (98), 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) [2024-11-11 19:49:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2024-11-11 19:49:49,593 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 21 [2024-11-11 19:49:49,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:49,593 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2024-11-11 19:49:49,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.4) internal successors, (56), 40 states have internal predecessors, (56), 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) [2024-11-11 19:49:49,593 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2024-11-11 19:49:49,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-11 19:49:49,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:49,594 INFO L218 NwaCegarLoop]: trace histogram [7, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:49,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-11 19:49:49,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-11 19:49:49,795 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:49,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:49,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2027051824, now seen corresponding path program 9 times [2024-11-11 19:49:49,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:49,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459178702] [2024-11-11 19:49:49,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:49,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 19:49:49,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:49,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459178702] [2024-11-11 19:49:49,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459178702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:49,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716527108] [2024-11-11 19:49:49,980 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 19:49:49,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:49,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:49,982 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:49:49,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-11 19:49:50,020 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-11 19:49:50,021 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:49:50,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-11 19:49:50,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 19:49:50,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 19:49:50,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716527108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:50,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:50,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 31 [2024-11-11 19:49:50,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298432621] [2024-11-11 19:49:50,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:50,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-11 19:49:50,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:50,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-11 19:49:50,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2024-11-11 19:49:50,376 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 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) [2024-11-11 19:49:51,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:51,648 INFO L93 Difference]: Finished difference Result 141 states and 197 transitions. [2024-11-11 19:49:51,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-11 19:49:51,649 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 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 22 [2024-11-11 19:49:51,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:51,650 INFO L225 Difference]: With dead ends: 141 [2024-11-11 19:49:51,650 INFO L226 Difference]: Without dead ends: 124 [2024-11-11 19:49:51,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=958, Invalid=4012, Unknown=0, NotChecked=0, Total=4970 [2024-11-11 19:49:51,651 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 102 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:51,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 128 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 19:49:51,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-11 19:49:51,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 85. [2024-11-11 19:49:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 84 states have internal predecessors, (108), 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) [2024-11-11 19:49:51,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2024-11-11 19:49:51,690 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 22 [2024-11-11 19:49:51,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:51,690 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2024-11-11 19:49:51,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 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) [2024-11-11 19:49:51,691 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2024-11-11 19:49:51,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-11 19:49:51,691 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:51,692 INFO L218 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:51,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-11 19:49:51,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-11 19:49:51,892 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:51,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1622674000, now seen corresponding path program 3 times [2024-11-11 19:49:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:51,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912072189] [2024-11-11 19:49:51,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:51,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:52,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:52,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912072189] [2024-11-11 19:49:52,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912072189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:52,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973164602] [2024-11-11 19:49:52,115 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 19:49:52,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:52,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:52,116 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:49:52,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-11 19:49:52,166 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-11 19:49:52,166 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:49:52,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-11 19:49:52,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:52,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:52,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973164602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:52,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:52,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-11 19:49:52,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074785947] [2024-11-11 19:49:52,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:52,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-11 19:49:52,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:52,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-11 19:49:52,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2024-11-11 19:49:52,529 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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) [2024-11-11 19:49:57,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:49:57,452 INFO L93 Difference]: Finished difference Result 497 states and 671 transitions. [2024-11-11 19:49:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-11 19:49:57,452 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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 22 [2024-11-11 19:49:57,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:49:57,454 INFO L225 Difference]: With dead ends: 497 [2024-11-11 19:49:57,454 INFO L226 Difference]: Without dead ends: 470 [2024-11-11 19:49:57,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2044, Invalid=4598, Unknown=0, NotChecked=0, Total=6642 [2024-11-11 19:49:57,456 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 855 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-11 19:49:57,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 374 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-11 19:49:57,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2024-11-11 19:49:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 125. [2024-11-11 19:49:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.3387096774193548) internal successors, (166), 124 states have internal predecessors, (166), 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) [2024-11-11 19:49:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2024-11-11 19:49:57,528 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 22 [2024-11-11 19:49:57,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:49:57,529 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2024-11-11 19:49:57,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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) [2024-11-11 19:49:57,529 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2024-11-11 19:49:57,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-11 19:49:57,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:49:57,529 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:49:57,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-11 19:49:57,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-11 19:49:57,730 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:49:57,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:49:57,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1230457407, now seen corresponding path program 10 times [2024-11-11 19:49:57,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:49:57,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000693223] [2024-11-11 19:49:57,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:49:57,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:49:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:49:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:58,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:49:58,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000693223] [2024-11-11 19:49:58,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000693223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:49:58,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351172322] [2024-11-11 19:49:58,370 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 19:49:58,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:49:58,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:49:58,371 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:49:58,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-11 19:49:58,439 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 19:49:58,439 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:49:58,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-11 19:49:58,441 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:49:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:58,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:49:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:49:59,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351172322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:49:59,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:49:59,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 43 [2024-11-11 19:49:59,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447397620] [2024-11-11 19:49:59,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:49:59,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-11 19:49:59,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:49:59,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-11 19:49:59,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2024-11-11 19:49:59,294 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand has 43 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 43 states have internal predecessors, (66), 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) [2024-11-11 19:50:01,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:50:01,466 INFO L93 Difference]: Finished difference Result 213 states and 264 transitions. [2024-11-11 19:50:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-11 19:50:01,466 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 43 states have internal predecessors, (66), 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 [2024-11-11 19:50:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:50:01,467 INFO L225 Difference]: With dead ends: 213 [2024-11-11 19:50:01,468 INFO L226 Difference]: Without dead ends: 187 [2024-11-11 19:50:01,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=506, Invalid=3916, Unknown=0, NotChecked=0, Total=4422 [2024-11-11 19:50:01,469 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 66 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 19:50:01,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 99 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 19:50:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-11 19:50:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 118. [2024-11-11 19:50:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.3418803418803418) internal successors, (157), 117 states have internal predecessors, (157), 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) [2024-11-11 19:50:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 157 transitions. [2024-11-11 19:50:01,542 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 157 transitions. Word has length 24 [2024-11-11 19:50:01,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:50:01,542 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 157 transitions. [2024-11-11 19:50:01,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 43 states have internal predecessors, (66), 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) [2024-11-11 19:50:01,542 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 157 transitions. [2024-11-11 19:50:01,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-11 19:50:01,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:50:01,543 INFO L218 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:50:01,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-11 19:50:01,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-11 19:50:01,743 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:50:01,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:50:01,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1431729572, now seen corresponding path program 11 times [2024-11-11 19:50:01,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:50:01,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587663939] [2024-11-11 19:50:01,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:50:01,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:50:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:50:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 19:50:02,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:50:02,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587663939] [2024-11-11 19:50:02,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587663939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:50:02,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528104294] [2024-11-11 19:50:02,005 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 19:50:02,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:50:02,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:50:02,007 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:50:02,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-11 19:50:02,056 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-11 19:50:02,056 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:50:02,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-11 19:50:02,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:50:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 19:50:02,091 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:50:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-11 19:50:02,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528104294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:50:02,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:50:02,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-11-11 19:50:02,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805075431] [2024-11-11 19:50:02,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:50:02,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-11 19:50:02,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:50:02,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-11 19:50:02,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2024-11-11 19:50:02,480 INFO L87 Difference]: Start difference. First operand 118 states and 157 transitions. Second operand has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 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) [2024-11-11 19:50:15,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:50:15,148 INFO L93 Difference]: Finished difference Result 465 states and 622 transitions. [2024-11-11 19:50:15,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-11 19:50:15,148 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 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 [2024-11-11 19:50:15,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:50:15,150 INFO L225 Difference]: With dead ends: 465 [2024-11-11 19:50:15,150 INFO L226 Difference]: Without dead ends: 453 [2024-11-11 19:50:15,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8326 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=6168, Invalid=16182, Unknown=0, NotChecked=0, Total=22350 [2024-11-11 19:50:15,155 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 1145 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-11 19:50:15,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 389 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-11 19:50:15,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-11 19:50:15,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 130. [2024-11-11 19:50:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.3410852713178294) internal successors, (173), 129 states have internal predecessors, (173), 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) [2024-11-11 19:50:15,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 173 transitions. [2024-11-11 19:50:15,240 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 173 transitions. Word has length 25 [2024-11-11 19:50:15,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:50:15,240 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 173 transitions. [2024-11-11 19:50:15,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 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) [2024-11-11 19:50:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 173 transitions. [2024-11-11 19:50:15,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-11 19:50:15,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:50:15,242 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:50:15,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-11 19:50:15,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:50:15,442 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:50:15,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:50:15,443 INFO L85 PathProgramCache]: Analyzing trace with hash -40778609, now seen corresponding path program 12 times [2024-11-11 19:50:15,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:50:15,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19893616] [2024-11-11 19:50:15,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:50:15,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:50:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:50:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 19:50:15,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:50:15,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19893616] [2024-11-11 19:50:15,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19893616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:50:15,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501525635] [2024-11-11 19:50:15,651 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-11 19:50:15,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:50:15,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:50:15,653 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:50:15,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-11 19:50:15,706 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-11 19:50:15,706 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:50:15,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-11 19:50:15,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:50:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 19:50:15,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:50:16,148 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-11 19:50:16,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501525635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:50:16,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:50:16,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 33 [2024-11-11 19:50:16,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678419041] [2024-11-11 19:50:16,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:50:16,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-11 19:50:16,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:50:16,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-11 19:50:16,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2024-11-11 19:50:16,151 INFO L87 Difference]: Start difference. First operand 130 states and 173 transitions. Second operand has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 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) [2024-11-11 19:50:16,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:50:16,804 INFO L93 Difference]: Finished difference Result 239 states and 308 transitions. [2024-11-11 19:50:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-11 19:50:16,804 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 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) Word has length 26 [2024-11-11 19:50:16,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:50:16,805 INFO L225 Difference]: With dead ends: 239 [2024-11-11 19:50:16,805 INFO L226 Difference]: Without dead ends: 177 [2024-11-11 19:50:16,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=1318, Unknown=0, NotChecked=0, Total=1560 [2024-11-11 19:50:16,806 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-11 19:50:16,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 83 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-11 19:50:16,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-11 19:50:16,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 153. [2024-11-11 19:50:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.3486842105263157) internal successors, (205), 152 states have internal predecessors, (205), 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) [2024-11-11 19:50:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 205 transitions. [2024-11-11 19:50:16,907 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 205 transitions. Word has length 26 [2024-11-11 19:50:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:50:16,908 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 205 transitions. [2024-11-11 19:50:16,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 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) [2024-11-11 19:50:16,908 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 205 transitions. [2024-11-11 19:50:16,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-11 19:50:16,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:50:16,908 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:50:16,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-11 19:50:17,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-11 19:50:17,109 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:50:17,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:50:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 881225141, now seen corresponding path program 13 times [2024-11-11 19:50:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:50:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932663307] [2024-11-11 19:50:17,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:50:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:50:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:50:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:50:17,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:50:17,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932663307] [2024-11-11 19:50:17,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932663307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:50:17,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450683171] [2024-11-11 19:50:17,850 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-11 19:50:17,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:50:17,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:50:17,851 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:50:17,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-11 19:50:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:50:17,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-11 19:50:17,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:50:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:50:18,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:50:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:50:19,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450683171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:50:19,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:50:19,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 49 [2024-11-11 19:50:19,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496652917] [2024-11-11 19:50:19,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:50:19,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-11 19:50:19,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:50:19,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-11 19:50:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2123, Unknown=0, NotChecked=0, Total=2352 [2024-11-11 19:50:19,065 INFO L87 Difference]: Start difference. First operand 153 states and 205 transitions. Second operand has 49 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 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) [2024-11-11 19:50:22,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:50:22,473 INFO L93 Difference]: Finished difference Result 261 states and 319 transitions. [2024-11-11 19:50:22,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-11 19:50:22,474 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 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 27 [2024-11-11 19:50:22,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:50:22,475 INFO L225 Difference]: With dead ends: 261 [2024-11-11 19:50:22,475 INFO L226 Difference]: Without dead ends: 227 [2024-11-11 19:50:22,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1344 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=624, Invalid=5076, Unknown=0, NotChecked=0, Total=5700 [2024-11-11 19:50:22,476 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 76 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-11 19:50:22,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 117 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-11 19:50:22,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-11 19:50:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 139. [2024-11-11 19:50:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.3623188405797102) internal successors, (188), 138 states have internal predecessors, (188), 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) [2024-11-11 19:50:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 188 transitions. [2024-11-11 19:50:22,571 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 188 transitions. Word has length 27 [2024-11-11 19:50:22,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:50:22,571 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 188 transitions. [2024-11-11 19:50:22,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.530612244897959) internal successors, (75), 49 states have internal predecessors, (75), 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) [2024-11-11 19:50:22,571 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 188 transitions. [2024-11-11 19:50:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-11 19:50:22,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:50:22,571 INFO L218 NwaCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:50:22,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-11 19:50:22,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-11 19:50:22,772 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:50:22,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:50:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash 949161264, now seen corresponding path program 14 times [2024-11-11 19:50:22,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:50:22,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125304101] [2024-11-11 19:50:22,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:50:22,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:50:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:50:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 19:50:23,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:50:23,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125304101] [2024-11-11 19:50:23,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125304101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:50:23,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356788252] [2024-11-11 19:50:23,085 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-11 19:50:23,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:50:23,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:50:23,087 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:50:23,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-11 19:50:23,137 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-11 19:50:23,138 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:50:23,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-11 19:50:23,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:50:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 19:50:23,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:50:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-11 19:50:23,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356788252] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:50:23,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:50:23,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-11 19:50:23,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416127083] [2024-11-11 19:50:23,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:50:23,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-11 19:50:23,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:50:23,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-11 19:50:23,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-11 19:50:23,677 INFO L87 Difference]: Start difference. First operand 139 states and 188 transitions. Second operand has 41 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 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) [2024-11-11 19:50:48,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:50:48,109 INFO L93 Difference]: Finished difference Result 585 states and 761 transitions. [2024-11-11 19:50:48,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2024-11-11 19:50:48,110 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 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 28 [2024-11-11 19:50:48,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:50:48,112 INFO L225 Difference]: With dead ends: 585 [2024-11-11 19:50:48,112 INFO L226 Difference]: Without dead ends: 557 [2024-11-11 19:50:48,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17387 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=10628, Invalid=33262, Unknown=0, NotChecked=0, Total=43890 [2024-11-11 19:50:48,116 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 1455 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-11 19:50:48,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 436 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-11 19:50:48,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-11 19:50:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 154. [2024-11-11 19:50:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.3529411764705883) internal successors, (207), 153 states have internal predecessors, (207), 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) [2024-11-11 19:50:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 207 transitions. [2024-11-11 19:50:48,247 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 207 transitions. Word has length 28 [2024-11-11 19:50:48,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:50:48,247 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 207 transitions. [2024-11-11 19:50:48,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 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) [2024-11-11 19:50:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 207 transitions. [2024-11-11 19:50:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-11 19:50:48,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:50:48,248 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:50:48,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-11 19:50:48,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-11 19:50:48,449 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:50:48,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:50:48,449 INFO L85 PathProgramCache]: Analyzing trace with hash 423173891, now seen corresponding path program 15 times [2024-11-11 19:50:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:50:48,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978816947] [2024-11-11 19:50:48,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:50:48,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:50:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:50:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 19:50:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:50:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978816947] [2024-11-11 19:50:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978816947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:50:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266106132] [2024-11-11 19:50:48,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-11 19:50:48,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:50:48,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:50:48,684 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:50:48,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-11 19:50:48,778 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-11 19:50:48,779 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:50:48,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-11 19:50:48,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:50:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 19:50:48,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:50:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-11 19:50:49,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266106132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:50:49,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:50:49,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 38 [2024-11-11 19:50:49,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131959535] [2024-11-11 19:50:49,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:50:49,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-11 19:50:49,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:50:49,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-11 19:50:49,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2024-11-11 19:50:49,364 INFO L87 Difference]: Start difference. First operand 154 states and 207 transitions. Second operand has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 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) [2024-11-11 19:50:50,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:50:50,408 INFO L93 Difference]: Finished difference Result 268 states and 342 transitions. [2024-11-11 19:50:50,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-11 19:50:50,408 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 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 29 [2024-11-11 19:50:50,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:50:50,409 INFO L225 Difference]: With dead ends: 268 [2024-11-11 19:50:50,409 INFO L226 Difference]: Without dead ends: 198 [2024-11-11 19:50:50,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=305, Invalid=1765, Unknown=0, NotChecked=0, Total=2070 [2024-11-11 19:50:50,410 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-11 19:50:50,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 98 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-11 19:50:50,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-11 19:50:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 171. [2024-11-11 19:50:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 170 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) [2024-11-11 19:50:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2024-11-11 19:50:50,553 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 29 [2024-11-11 19:50:50,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:50:50,553 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2024-11-11 19:50:50,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 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) [2024-11-11 19:50:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2024-11-11 19:50:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-11 19:50:50,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:50:50,555 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:50:50,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-11 19:50:50,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:50:50,759 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:50:50,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:50:50,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1268979979, now seen corresponding path program 16 times [2024-11-11 19:50:50,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:50:50,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410141750] [2024-11-11 19:50:50,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:50:50,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:50:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:50:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-11 19:50:50,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:50:50,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410141750] [2024-11-11 19:50:50,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410141750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:50:50,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182710011] [2024-11-11 19:50:50,966 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-11 19:50:50,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:50:50,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:50:50,967 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:50:50,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-11 19:50:51,034 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-11 19:50:51,034 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:50:51,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-11 19:50:51,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:50:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-11 19:50:51,137 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:50:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-11 19:50:51,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182710011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:50:51,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:50:51,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 12] total 31 [2024-11-11 19:50:51,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161062403] [2024-11-11 19:50:51,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:50:51,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-11 19:50:51,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:50:51,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-11 19:50:51,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-11-11 19:50:51,422 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 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) [2024-11-11 19:50:52,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 19:50:52,438 INFO L93 Difference]: Finished difference Result 238 states and 296 transitions. [2024-11-11 19:50:52,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-11 19:50:52,439 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 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 29 [2024-11-11 19:50:52,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 19:50:52,440 INFO L225 Difference]: With dead ends: 238 [2024-11-11 19:50:52,440 INFO L226 Difference]: Without dead ends: 198 [2024-11-11 19:50:52,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=342, Invalid=2208, Unknown=0, NotChecked=0, Total=2550 [2024-11-11 19:50:52,441 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-11 19:50:52,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 112 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-11 19:50:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-11 19:50:52,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 169. [2024-11-11 19:50:52,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.2976190476190477) internal successors, (218), 168 states have internal predecessors, (218), 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) [2024-11-11 19:50:52,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 218 transitions. [2024-11-11 19:50:52,579 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 218 transitions. Word has length 29 [2024-11-11 19:50:52,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 19:50:52,579 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 218 transitions. [2024-11-11 19:50:52,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 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) [2024-11-11 19:50:52,579 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 218 transitions. [2024-11-11 19:50:52,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-11 19:50:52,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 19:50:52,580 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 19:50:52,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-11 19:50:52,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:50:52,781 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 19:50:52,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 19:50:52,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727233, now seen corresponding path program 17 times [2024-11-11 19:50:52,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 19:50:52,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270611061] [2024-11-11 19:50:52,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 19:50:52,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 19:50:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 19:50:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:50:53,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 19:50:53,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270611061] [2024-11-11 19:50:53,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270611061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-11 19:50:53,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454602154] [2024-11-11 19:50:53,732 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-11 19:50:53,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-11 19:50:53,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 19:50:53,733 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-11 19:50:53,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-11 19:50:53,813 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-11 19:50:53,813 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-11 19:50:53,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-11 19:50:53,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 19:50:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:50:54,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-11 19:50:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 19:50:56,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454602154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-11 19:50:56,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-11 19:50:56,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 27] total 68 [2024-11-11 19:50:56,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127588956] [2024-11-11 19:50:56,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-11 19:50:56,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-11 19:50:56,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 19:50:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-11 19:50:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=4165, Unknown=0, NotChecked=0, Total=4556 [2024-11-11 19:50:56,227 INFO L87 Difference]: Start difference. First operand 169 states and 218 transitions. Second operand has 68 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 68 states have internal predecessors, (83), 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)