./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i -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 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:30:13,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:30:13,418 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:30:13,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:30:13,424 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:30:13,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:30:13,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:30:13,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:30:13,451 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:30:13,451 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:30:13,452 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:30:13,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:30:13,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:30:13,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:30:13,453 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:30:13,453 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:30:13,453 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:30:13,454 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:30:13,454 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:30:13,454 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:30:13,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:30:13,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:30:13,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:30:13,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:30:13,457 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:30:13,457 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:30:13,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:30:13,457 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:30:13,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:30:13,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:30:13,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:30:13,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:30:13,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:30:13,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:30:13,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:30:13,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:30:13,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:30:13,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:30:13,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:30:13,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:30:13,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:30:13,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:30:13,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45c2395b28f523380bfcff26ce2efb02406d69c6cc122ac9297e3f35ef9c7306 [2024-11-21 20:30:13,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:30:13,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:30:13,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:30:13,687 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:30:13,687 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:30:13,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2024-11-21 20:30:14,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:30:15,063 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:30:15,064 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_allDiff2_ground.i [2024-11-21 20:30:15,072 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ff1a4952/44544863e66646feaf264913a50f6329/FLAGf1bd3b44c [2024-11-21 20:30:15,473 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ff1a4952/44544863e66646feaf264913a50f6329 [2024-11-21 20:30:15,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:30:15,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:30:15,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:30:15,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:30:15,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:30:15,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f31eed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15, skipping insertion in model container [2024-11-21 20:30:15,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,502 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:30:15,642 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/array-examples/standard_allDiff2_ground.i[817,830] [2024-11-21 20:30:15,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:30:15,667 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:30:15,679 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/array-examples/standard_allDiff2_ground.i[817,830] [2024-11-21 20:30:15,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:30:15,702 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:30:15,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15 WrapperNode [2024-11-21 20:30:15,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:30:15,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:30:15,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:30:15,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:30:15,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,729 INFO L138 Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-11-21 20:30:15,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:30:15,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:30:15,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:30:15,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:30:15,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,750 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-21 20:30:15,751 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,751 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:30:15,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:30:15,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:30:15,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:30:15,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (1/1) ... [2024-11-21 20:30:15,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:30:15,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:30:15,798 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) [2024-11-21 20:30:15,801 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 [2024-11-21 20:30:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:30:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:30:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:30:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:30:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:30:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:30:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:30:15,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:30:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:30:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:30:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:30:15,900 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:30:15,905 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:30:16,050 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-21 20:30:16,050 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:30:16,063 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:30:16,063 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-21 20:30:16,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:30:16 BoogieIcfgContainer [2024-11-21 20:30:16,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:30:16,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:30:16,067 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:30:16,070 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:30:16,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:30:15" (1/3) ... [2024-11-21 20:30:16,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab0fa3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:30:16, skipping insertion in model container [2024-11-21 20:30:16,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:30:15" (2/3) ... [2024-11-21 20:30:16,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab0fa3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:30:16, skipping insertion in model container [2024-11-21 20:30:16,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:30:16" (3/3) ... [2024-11-21 20:30:16,073 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_allDiff2_ground.i [2024-11-21 20:30:16,102 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:30:16,103 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:30:16,157 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:30:16,165 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;@af3a4c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:30:16,165 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:30:16,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 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) [2024-11-21 20:30:16,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-21 20:30:16,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:16,174 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:16,175 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:16,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1934610002, now seen corresponding path program 1 times [2024-11-21 20:30:16,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:16,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340704210] [2024-11-21 20:30:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:16,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:30:16,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:16,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340704210] [2024-11-21 20:30:16,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340704210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:30:16,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:30:16,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:30:16,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218777711] [2024-11-21 20:30:16,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:30:16,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:30:16,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:30:16,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:30:16,391 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 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 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-21 20:30:16,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:16,424 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2024-11-21 20:30:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:30:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 [2024-11-21 20:30:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:16,434 INFO L225 Difference]: With dead ends: 48 [2024-11-21 20:30:16,434 INFO L226 Difference]: Without dead ends: 22 [2024-11-21 20:30:16,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:30:16,438 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:16,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:30:16,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-21 20:30:16,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-21 20:30:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 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) [2024-11-21 20:30:16,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-11-21 20:30:16,460 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 10 [2024-11-21 20:30:16,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:16,460 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-11-21 20:30:16,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-21 20:30:16,461 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-11-21 20:30:16,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-21 20:30:16,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:16,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:16,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:30:16,462 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:16,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:16,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1279412436, now seen corresponding path program 1 times [2024-11-21 20:30:16,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:16,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906551653] [2024-11-21 20:30:16,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:16,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:30:16,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:16,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906551653] [2024-11-21 20:30:16,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906551653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:30:16,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923525024] [2024-11-21 20:30:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:16,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:30:16,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:30:16,573 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) [2024-11-21 20:30:16,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 20:30:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:16,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:30:16,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:30:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:30:16,675 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 20:30:16,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923525024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:30:16,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 20:30:16,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-21 20:30:16,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722405587] [2024-11-21 20:30:16,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:30:16,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-21 20:30:16,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:16,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-21 20:30:16,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:30:16,680 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:30:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:16,718 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2024-11-21 20:30:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-21 20:30:16,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-21 20:30:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:16,719 INFO L225 Difference]: With dead ends: 37 [2024-11-21 20:30:16,720 INFO L226 Difference]: Without dead ends: 28 [2024-11-21 20:30:16,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:30:16,721 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:16,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:30:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-21 20:30:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-11-21 20:30:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2024-11-21 20:30:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-21 20:30:16,732 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 12 [2024-11-21 20:30:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:16,733 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-21 20:30:16,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:30:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-21 20:30:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-21 20:30:16,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:16,734 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:16,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-21 20:30:16,934 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 [2024-11-21 20:30:16,935 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:16,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1079055556, now seen corresponding path program 1 times [2024-11-21 20:30:16,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:16,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527211251] [2024-11-21 20:30:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:16,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:30:17,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:17,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527211251] [2024-11-21 20:30:17,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527211251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:30:17,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796413842] [2024-11-21 20:30:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:17,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:30:17,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:30:17,009 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) [2024-11-21 20:30:17,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 20:30:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:17,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:30:17,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:30:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:30:17,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:30:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:30:17,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796413842] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:30:17,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:30:17,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 20:30:17,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233737025] [2024-11-21 20:30:17,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:30:17,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 20:30:17,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:17,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 20:30:17,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:30:17,096 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 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) [2024-11-21 20:30:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:17,145 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2024-11-21 20:30:17,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:30:17,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 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 16 [2024-11-21 20:30:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:17,148 INFO L225 Difference]: With dead ends: 57 [2024-11-21 20:30:17,148 INFO L226 Difference]: Without dead ends: 40 [2024-11-21 20:30:17,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:30:17,149 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:17,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 56 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:30:17,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-21 20:30:17,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2024-11-21 20:30:17,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 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) [2024-11-21 20:30:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-21 20:30:17,157 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 16 [2024-11-21 20:30:17,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:17,157 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-21 20:30:17,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 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) [2024-11-21 20:30:17,157 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-21 20:30:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-21 20:30:17,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:17,158 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:17,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 20:30:17,358 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 [2024-11-21 20:30:17,359 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:17,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:17,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1252365506, now seen corresponding path program 2 times [2024-11-21 20:30:17,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:17,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835137801] [2024-11-21 20:30:17,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:30:17,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:17,393 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:30:17,393 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:30:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-21 20:30:17,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:17,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835137801] [2024-11-21 20:30:17,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835137801] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:30:17,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628474330] [2024-11-21 20:30:17,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:30:17,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:30:17,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:30:17,487 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) [2024-11-21 20:30:17,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 20:30:17,544 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:30:17,544 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:30:17,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:30:17,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:30:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:30:17,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:30:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:30:17,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628474330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:30:17,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:30:17,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-21 20:30:17,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405076541] [2024-11-21 20:30:17,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:30:17,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-21 20:30:17,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:17,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-21 20:30:17,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2024-11-21 20:30:17,702 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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) [2024-11-21 20:30:17,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:17,865 INFO L93 Difference]: Finished difference Result 112 states and 154 transitions. [2024-11-21 20:30:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-21 20:30:17,866 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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 [2024-11-21 20:30:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:17,867 INFO L225 Difference]: With dead ends: 112 [2024-11-21 20:30:17,867 INFO L226 Difference]: Without dead ends: 91 [2024-11-21 20:30:17,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=187, Unknown=0, NotChecked=0, Total=306 [2024-11-21 20:30:17,868 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 176 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:17,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 122 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:30:17,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-21 20:30:17,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2024-11-21 20:30:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.25) internal successors, (110), 88 states have internal predecessors, (110), 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) [2024-11-21 20:30:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2024-11-21 20:30:17,877 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 22 [2024-11-21 20:30:17,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:17,878 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2024-11-21 20:30:17,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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) [2024-11-21 20:30:17,878 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2024-11-21 20:30:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-21 20:30:17,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:17,879 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:17,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 20:30:18,080 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 [2024-11-21 20:30:18,081 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:18,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:18,081 INFO L85 PathProgramCache]: Analyzing trace with hash -44265316, now seen corresponding path program 1 times [2024-11-21 20:30:18,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:18,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493213815] [2024-11-21 20:30:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:18,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-21 20:30:18,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493213815] [2024-11-21 20:30:18,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493213815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:30:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882562162] [2024-11-21 20:30:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:30:18,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:30:18,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:30:18,435 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) [2024-11-21 20:30:18,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 20:30:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:30:18,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-21 20:30:18,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:30:18,556 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-21 20:30:18,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:30:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-21 20:30:18,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882562162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:30:18,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:30:18,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-21 20:30:18,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648482844] [2024-11-21 20:30:18,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:30:18,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-21 20:30:18,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-21 20:30:18,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:30:18,770 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 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) [2024-11-21 20:30:18,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:18,941 INFO L93 Difference]: Finished difference Result 251 states and 340 transitions. [2024-11-21 20:30:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-21 20:30:18,941 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 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 69 [2024-11-21 20:30:18,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:18,943 INFO L225 Difference]: With dead ends: 251 [2024-11-21 20:30:18,944 INFO L226 Difference]: Without dead ends: 185 [2024-11-21 20:30:18,944 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:30:18,945 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 380 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:18,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 168 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:30:18,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-21 20:30:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 113. [2024-11-21 20:30:18,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 112 states have internal predecessors, (134), 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) [2024-11-21 20:30:18,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2024-11-21 20:30:18,965 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 69 [2024-11-21 20:30:18,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:18,966 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2024-11-21 20:30:18,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 25 states have internal predecessors, (62), 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) [2024-11-21 20:30:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2024-11-21 20:30:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-21 20:30:18,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:18,969 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:18,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-21 20:30:19,170 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 [2024-11-21 20:30:19,170 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:19,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:19,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2113770628, now seen corresponding path program 2 times [2024-11-21 20:30:19,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:19,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172651873] [2024-11-21 20:30:19,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:30:19,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:19,199 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:30:19,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:30:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-21 20:30:19,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:19,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172651873] [2024-11-21 20:30:19,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172651873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:30:19,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412239847] [2024-11-21 20:30:19,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:30:19,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:30:19,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:30:19,660 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) [2024-11-21 20:30:19,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 20:30:19,740 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:30:19,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:30:19,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-21 20:30:19,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:30:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-21 20:30:19,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:30:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2024-11-21 20:30:20,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412239847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:30:20,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:30:20,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-21 20:30:20,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820241596] [2024-11-21 20:30:20,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:30:20,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-21 20:30:20,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:20,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-21 20:30:20,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-21 20:30:20,408 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 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) [2024-11-21 20:30:20,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:20,848 INFO L93 Difference]: Finished difference Result 443 states and 616 transitions. [2024-11-21 20:30:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-21 20:30:20,849 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 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 93 [2024-11-21 20:30:20,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:20,851 INFO L225 Difference]: With dead ends: 443 [2024-11-21 20:30:20,851 INFO L226 Difference]: Without dead ends: 377 [2024-11-21 20:30:20,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-21 20:30:20,854 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 954 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:20,855 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [954 Valid, 299 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 20:30:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-21 20:30:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 161. [2024-11-21 20:30:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.1375) internal successors, (182), 160 states have internal predecessors, (182), 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) [2024-11-21 20:30:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 182 transitions. [2024-11-21 20:30:20,868 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 182 transitions. Word has length 93 [2024-11-21 20:30:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:20,868 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 182 transitions. [2024-11-21 20:30:20,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2448979591836733) internal successors, (110), 49 states have internal predecessors, (110), 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) [2024-11-21 20:30:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 182 transitions. [2024-11-21 20:30:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-21 20:30:20,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:20,870 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:20,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-21 20:30:21,070 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 [2024-11-21 20:30:21,071 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:21,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1416492116, now seen corresponding path program 3 times [2024-11-21 20:30:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:21,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193268103] [2024-11-21 20:30:21,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:30:21,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:21,098 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:30:21,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:30:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-21 20:30:21,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:21,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193268103] [2024-11-21 20:30:21,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193268103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:30:21,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:30:21,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-21 20:30:21,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17972383] [2024-11-21 20:30:21,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:30:21,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-21 20:30:21,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:21,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-21 20:30:21,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-21 20:30:21,138 INFO L87 Difference]: Start difference. First operand 161 states and 182 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2024-11-21 20:30:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:21,182 INFO L93 Difference]: Finished difference Result 266 states and 328 transitions. [2024-11-21 20:30:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-21 20:30:21,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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 141 [2024-11-21 20:30:21,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:21,183 INFO L225 Difference]: With dead ends: 266 [2024-11-21 20:30:21,183 INFO L226 Difference]: Without dead ends: 257 [2024-11-21 20:30:21,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:30:21,184 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:21,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 50 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:30:21,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-21 20:30:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 162. [2024-11-21 20:30:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.1428571428571428) internal successors, (184), 161 states have internal predecessors, (184), 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) [2024-11-21 20:30:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 184 transitions. [2024-11-21 20:30:21,194 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 184 transitions. Word has length 141 [2024-11-21 20:30:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:21,194 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 184 transitions. [2024-11-21 20:30:21,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2024-11-21 20:30:21,194 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 184 transitions. [2024-11-21 20:30:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-21 20:30:21,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:21,196 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:21,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-21 20:30:21,196 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:21,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash 112256406, now seen corresponding path program 4 times [2024-11-21 20:30:21,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:21,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992161852] [2024-11-21 20:30:21,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:30:21,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:21,231 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:30:21,231 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:30:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2024-11-21 20:30:21,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:21,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992161852] [2024-11-21 20:30:21,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992161852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:30:21,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606074581] [2024-11-21 20:30:21,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:30:21,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:30:21,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:30:21,502 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) [2024-11-21 20:30:21,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 20:30:21,618 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:30:21,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:30:21,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-21 20:30:21,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:30:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2024-11-21 20:30:21,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:30:21,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2290 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 2118 trivial. 0 not checked. [2024-11-21 20:30:21,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606074581] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:30:21,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:30:21,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-11-21 20:30:21,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423299506] [2024-11-21 20:30:21,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:30:21,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-21 20:30:21,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:30:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-21 20:30:21,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2024-11-21 20:30:21,833 INFO L87 Difference]: Start difference. First operand 162 states and 184 transitions. Second operand has 23 states, 23 states have (on average 4.260869565217392) internal successors, (98), 23 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) [2024-11-21 20:30:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:30:21,978 INFO L93 Difference]: Finished difference Result 284 states and 351 transitions. [2024-11-21 20:30:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-21 20:30:21,979 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.260869565217392) internal successors, (98), 23 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) Word has length 144 [2024-11-21 20:30:21,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:30:21,980 INFO L225 Difference]: With dead ends: 284 [2024-11-21 20:30:21,980 INFO L226 Difference]: Without dead ends: 275 [2024-11-21 20:30:21,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2024-11-21 20:30:21,981 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 176 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:30:21,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 173 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:30:21,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-21 20:30:21,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 228. [2024-11-21 20:30:21,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.198237885462555) internal successors, (272), 227 states have internal predecessors, (272), 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) [2024-11-21 20:30:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 272 transitions. [2024-11-21 20:30:21,997 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 272 transitions. Word has length 144 [2024-11-21 20:30:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:30:21,998 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 272 transitions. [2024-11-21 20:30:21,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.260869565217392) internal successors, (98), 23 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) [2024-11-21 20:30:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 272 transitions. [2024-11-21 20:30:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-21 20:30:22,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:30:22,006 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:30:22,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-21 20:30:22,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:30:22,206 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:30:22,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:30:22,207 INFO L85 PathProgramCache]: Analyzing trace with hash 996992030, now seen corresponding path program 5 times [2024-11-21 20:30:22,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:30:22,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154123360] [2024-11-21 20:30:22,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:30:22,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:30:22,422 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-11-21 20:30:22,422 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:30:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 782 proven. 37 refuted. 0 times theorem prover too weak. 2120 trivial. 0 not checked. [2024-11-21 20:30:23,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:30:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154123360] [2024-11-21 20:30:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154123360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:30:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341492497] [2024-11-21 20:30:23,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:30:23,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:30:23,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:30:23,042 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) [2024-11-21 20:30:23,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 20:31:07,767 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-11-21 20:31:07,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:31:07,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-21 20:31:07,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:31:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 782 proven. 37 refuted. 0 times theorem prover too weak. 2120 trivial. 0 not checked. [2024-11-21 20:31:07,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:31:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 800 proven. 19 refuted. 0 times theorem prover too weak. 2120 trivial. 0 not checked. [2024-11-21 20:31:08,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341492497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:31:08,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:31:08,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 46 [2024-11-21 20:31:08,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451983420] [2024-11-21 20:31:08,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:31:08,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-21 20:31:08,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:31:08,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-21 20:31:08,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=828, Invalid=1242, Unknown=0, NotChecked=0, Total=2070 [2024-11-21 20:31:08,490 INFO L87 Difference]: Start difference. First operand 228 states and 272 transitions. Second operand has 46 states, 46 states have (on average 3.760869565217391) internal successors, (173), 46 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) [2024-11-21 20:31:09,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:31:09,312 INFO L93 Difference]: Finished difference Result 373 states and 478 transitions. [2024-11-21 20:31:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-21 20:31:09,312 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.760869565217391) internal successors, (173), 46 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) Word has length 188 [2024-11-21 20:31:09,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:31:09,314 INFO L225 Difference]: With dead ends: 373 [2024-11-21 20:31:09,314 INFO L226 Difference]: Without dead ends: 252 [2024-11-21 20:31:09,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=3087, Invalid=4745, Unknown=0, NotChecked=0, Total=7832 [2024-11-21 20:31:09,318 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 138 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-21 20:31:09,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 278 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-21 20:31:09,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-21 20:31:09,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-21 20:31:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.1832669322709164) internal successors, (297), 251 states have internal predecessors, (297), 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) [2024-11-21 20:31:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 297 transitions. [2024-11-21 20:31:09,343 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 297 transitions. Word has length 188 [2024-11-21 20:31:09,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:31:09,344 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 297 transitions. [2024-11-21 20:31:09,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.760869565217391) internal successors, (173), 46 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) [2024-11-21 20:31:09,344 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 297 transitions. [2024-11-21 20:31:09,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-21 20:31:09,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:31:09,347 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 22, 22, 22, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:31:09,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-21 20:31:09,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:31:09,548 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:31:09,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:31:09,549 INFO L85 PathProgramCache]: Analyzing trace with hash -347461954, now seen corresponding path program 6 times [2024-11-21 20:31:09,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:31:09,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815312893] [2024-11-21 20:31:09,549 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:31:09,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:31:09,585 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-21 20:31:09,585 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:31:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4029 backedges. 255 proven. 5 refuted. 0 times theorem prover too weak. 3769 trivial. 0 not checked. [2024-11-21 20:31:09,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:31:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815312893] [2024-11-21 20:31:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815312893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:31:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528368038] [2024-11-21 20:31:09,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-21 20:31:09,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:31:09,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:31:09,664 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) [2024-11-21 20:31:09,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 20:31:09,834 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-21 20:31:09,834 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:31:09,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-21 20:31:09,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:31:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4029 backedges. 255 proven. 5 refuted. 0 times theorem prover too weak. 3769 trivial. 0 not checked. [2024-11-21 20:31:09,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:31:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4029 backedges. 255 proven. 5 refuted. 0 times theorem prover too weak. 3769 trivial. 0 not checked. [2024-11-21 20:31:09,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528368038] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:31:09,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:31:09,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-11-21 20:31:09,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692273604] [2024-11-21 20:31:09,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:31:09,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-21 20:31:09,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:31:09,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-21 20:31:09,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-21 20:31:09,936 INFO L87 Difference]: Start difference. First operand 252 states and 297 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:31:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:31:10,357 INFO L93 Difference]: Finished difference Result 1522 states and 2231 transitions. [2024-11-21 20:31:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-21 20:31:10,358 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2024-11-21 20:31:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:31:10,362 INFO L225 Difference]: With dead ends: 1522 [2024-11-21 20:31:10,362 INFO L226 Difference]: Without dead ends: 1513 [2024-11-21 20:31:10,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=338, Invalid=654, Unknown=0, NotChecked=0, Total=992 [2024-11-21 20:31:10,363 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 103 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:31:10,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 84 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:31:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2024-11-21 20:31:10,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 313. [2024-11-21 20:31:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.2435897435897436) internal successors, (388), 312 states have internal predecessors, (388), 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) [2024-11-21 20:31:10,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 388 transitions. [2024-11-21 20:31:10,403 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 388 transitions. Word has length 248 [2024-11-21 20:31:10,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:31:10,404 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 388 transitions. [2024-11-21 20:31:10,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:31:10,404 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 388 transitions. [2024-11-21 20:31:10,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-21 20:31:10,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:31:10,406 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 26, 26, 26, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:31:10,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-21 20:31:10,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-21 20:31:10,607 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:31:10,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:31:10,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1181939394, now seen corresponding path program 7 times [2024-11-21 20:31:10,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:31:10,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476849119] [2024-11-21 20:31:10,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:31:10,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:31:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:31:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4391 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2024-11-21 20:31:12,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:31:12,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476849119] [2024-11-21 20:31:12,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476849119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:31:12,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219435763] [2024-11-21 20:31:12,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-21 20:31:12,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:31:12,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:31:12,100 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) [2024-11-21 20:31:12,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-21 20:31:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:31:12,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-21 20:31:12,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:31:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4391 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2024-11-21 20:31:12,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:31:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4391 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2024-11-21 20:31:14,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219435763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:31:14,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:31:14,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-21 20:31:14,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571171596] [2024-11-21 20:31:14,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:31:14,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-21 20:31:14,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:31:14,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-21 20:31:14,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-21 20:31:14,157 INFO L87 Difference]: Start difference. First operand 313 states and 388 transitions. Second operand has 97 states, 97 states have (on average 2.1237113402061856) internal successors, (206), 97 states have internal predecessors, (206), 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) [2024-11-21 20:31:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:31:16,680 INFO L93 Difference]: Finished difference Result 4432 states and 6308 transitions. [2024-11-21 20:31:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-21 20:31:16,681 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.1237113402061856) internal successors, (206), 97 states have internal predecessors, (206), 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 260 [2024-11-21 20:31:16,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:31:16,691 INFO L225 Difference]: With dead ends: 4432 [2024-11-21 20:31:16,692 INFO L226 Difference]: Without dead ends: 4214 [2024-11-21 20:31:16,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-21 20:31:16,694 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 2165 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2165 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-21 20:31:16,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2165 Valid, 583 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-21 20:31:16,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2024-11-21 20:31:16,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 409. [2024-11-21 20:31:16,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.1862745098039216) internal successors, (484), 408 states have internal predecessors, (484), 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) [2024-11-21 20:31:16,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 484 transitions. [2024-11-21 20:31:16,777 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 484 transitions. Word has length 260 [2024-11-21 20:31:16,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:31:16,778 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 484 transitions. [2024-11-21 20:31:16,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.1237113402061856) internal successors, (206), 97 states have internal predecessors, (206), 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) [2024-11-21 20:31:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 484 transitions. [2024-11-21 20:31:16,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-21 20:31:16,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:31:16,781 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 26, 26, 26, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:31:16,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-21 20:31:16,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:31:16,982 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:31:16,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:31:16,982 INFO L85 PathProgramCache]: Analyzing trace with hash -876816994, now seen corresponding path program 8 times [2024-11-21 20:31:16,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:31:16,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760172874] [2024-11-21 20:31:16,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:31:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:31:17,068 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:31:17,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:31:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 11111 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2024-11-21 20:31:21,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:31:21,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760172874] [2024-11-21 20:31:21,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760172874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:31:21,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460435740] [2024-11-21 20:31:21,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:31:21,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:31:21,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:31:21,650 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) [2024-11-21 20:31:21,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-21 20:31:21,897 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:31:21,897 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:31:21,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 1373 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-21 20:31:21,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:31:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11111 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2024-11-21 20:31:22,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:31:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11111 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 2275 trivial. 0 not checked. [2024-11-21 20:31:28,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460435740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:31:28,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:31:28,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-21 20:31:28,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591549116] [2024-11-21 20:31:28,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:31:28,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-21 20:31:28,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:31:28,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-21 20:31:28,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-21 20:31:28,942 INFO L87 Difference]: Start difference. First operand 409 states and 484 transitions. Second operand has 193 states, 193 states have (on average 2.062176165803109) internal successors, (398), 193 states have internal predecessors, (398), 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) [2024-11-21 20:31:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:31:52,446 INFO L93 Difference]: Finished difference Result 9616 states and 13748 transitions. [2024-11-21 20:31:52,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-21 20:31:52,447 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.062176165803109) internal successors, (398), 193 states have internal predecessors, (398), 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 356 [2024-11-21 20:31:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:31:52,473 INFO L225 Difference]: With dead ends: 9616 [2024-11-21 20:31:52,474 INFO L226 Difference]: Without dead ends: 9398 [2024-11-21 20:31:52,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-21 20:31:52,479 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 6813 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6813 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 976 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:31:52,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6813 Valid, 1002 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [976 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-21 20:31:52,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9398 states. [2024-11-21 20:31:52,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9398 to 601. [2024-11-21 20:31:52,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 600 states have (on average 1.1266666666666667) internal successors, (676), 600 states have internal predecessors, (676), 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) [2024-11-21 20:31:52,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 676 transitions. [2024-11-21 20:31:52,630 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 676 transitions. Word has length 356 [2024-11-21 20:31:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:31:52,630 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 676 transitions. [2024-11-21 20:31:52,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.062176165803109) internal successors, (398), 193 states have internal predecessors, (398), 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) [2024-11-21 20:31:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 676 transitions. [2024-11-21 20:31:52,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2024-11-21 20:31:52,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:31:52,637 INFO L215 NwaCegarLoop]: trace histogram [190, 190, 26, 26, 26, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:31:52,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-21 20:31:52,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-21 20:31:52,838 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:31:52,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:31:52,838 INFO L85 PathProgramCache]: Analyzing trace with hash -259592610, now seen corresponding path program 9 times [2024-11-21 20:31:52,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:31:52,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718787374] [2024-11-21 20:31:52,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:31:52,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:31:52,911 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-21 20:31:52,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:31:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 38375 backedges. 870 proven. 91 refuted. 0 times theorem prover too weak. 37414 trivial. 0 not checked. [2024-11-21 20:31:52,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:31:52,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718787374] [2024-11-21 20:31:52,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718787374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:31:52,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973960470] [2024-11-21 20:31:52,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:31:52,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:31:52,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:31:52,996 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) [2024-11-21 20:31:52,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-21 20:31:53,279 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-21 20:31:53,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:31:53,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-21 20:31:53,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:31:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 38375 backedges. 758 proven. 53 refuted. 0 times theorem prover too weak. 37564 trivial. 0 not checked. [2024-11-21 20:31:53,352 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:31:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 38375 backedges. 758 proven. 53 refuted. 0 times theorem prover too weak. 37564 trivial. 0 not checked. [2024-11-21 20:31:53,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973960470] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:31:53,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:31:53,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-21 20:31:53,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904745171] [2024-11-21 20:31:53,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:31:53,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-21 20:31:53,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:31:53,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-21 20:31:53,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-21 20:31:53,455 INFO L87 Difference]: Start difference. First operand 601 states and 676 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 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)