./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gj2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/gj2007.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 e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:18:24,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:18:24,715 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:18:24,719 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:18:24,720 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:18:24,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:18:24,743 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:18:24,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:18:24,744 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:18:24,744 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:18:24,745 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:18:24,745 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:18:24,746 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:18:24,746 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:18:24,747 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:18:24,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:18:24,748 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:18:24,748 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:18:24,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:18:24,749 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:18:24,749 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:18:24,750 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:18:24,750 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:18:24,750 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:18:24,751 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:18:24,751 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:18:24,752 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:18:24,752 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:18:24,752 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:18:24,753 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:18:24,753 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:18:24,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:18:24,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:18:24,754 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:18:24,754 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:18:24,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:18:24,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:18:24,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:18:24,756 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:18:24,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:18:24,756 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:18:24,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:18:24,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 [2024-11-18 13:18:25,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:18:25,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:18:25,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:18:25,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:18:25,078 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:18:25,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gj2007.i [2024-11-18 13:18:26,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:18:26,678 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:18:26,679 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.i [2024-11-18 13:18:26,685 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37f0ffa0/1f42b88c8202461c9287d09810cd73f0/FLAG0a3872c40 [2024-11-18 13:18:26,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37f0ffa0/1f42b88c8202461c9287d09810cd73f0 [2024-11-18 13:18:26,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:18:26,704 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:18:26,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:18:26,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:18:26,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:18:26,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba26447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26, skipping insertion in model container [2024-11-18 13:18:26,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:18:26,890 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/loop-lit/gj2007.i[895,908] [2024-11-18 13:18:26,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:18:26,908 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:18:26,919 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/loop-lit/gj2007.i[895,908] [2024-11-18 13:18:26,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:18:26,936 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:18:26,937 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26 WrapperNode [2024-11-18 13:18:26,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:18:26,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:18:26,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:18:26,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:18:26,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,968 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2024-11-18 13:18:26,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:18:26,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:18:26,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:18:26,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:18:26,977 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,977 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,978 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,986 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 13:18:26,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,991 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:18:26,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:18:26,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:18:26,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:18:26,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (1/1) ... [2024-11-18 13:18:26,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:18:27,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:18:27,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 13:18:27,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 13:18:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:18:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:18:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:18:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:18:27,138 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:18:27,142 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:18:27,329 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-18 13:18:27,331 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:18:27,345 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:18:27,346 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 13:18:27,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:18:27 BoogieIcfgContainer [2024-11-18 13:18:27,346 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:18:27,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:18:27,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:18:27,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:18:27,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:18:26" (1/3) ... [2024-11-18 13:18:27,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7b03b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:18:27, skipping insertion in model container [2024-11-18 13:18:27,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:18:26" (2/3) ... [2024-11-18 13:18:27,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7b03b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:18:27, skipping insertion in model container [2024-11-18 13:18:27,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:18:27" (3/3) ... [2024-11-18 13:18:27,356 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007.i [2024-11-18 13:18:27,373 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:18:27,374 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 13:18:27,434 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:18:27,444 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;@1122d7f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:18:27,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 13:18:27,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:27,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-18 13:18:27,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:27,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-18 13:18:27,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:27,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:27,464 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2024-11-18 13:18:27,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:27,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126854350] [2024-11-18 13:18:27,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:18:27,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:18:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:18:27,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:27,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126854350] [2024-11-18 13:18:27,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126854350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:18:27,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:18:27,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-18 13:18:27,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485310307] [2024-11-18 13:18:27,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:18:27,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:18:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:27,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:18:27,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:18:27,627 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-11-18 13:18:27,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:27,639 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2024-11-18 13:18:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:18:27,642 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2024-11-18 13:18:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:27,647 INFO L225 Difference]: With dead ends: 20 [2024-11-18 13:18:27,647 INFO L226 Difference]: Without dead ends: 8 [2024-11-18 13:18:27,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:18:27,652 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:27,653 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:18:27,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-11-18 13:18:27,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-18 13:18:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2024-11-18 13:18:27,680 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2024-11-18 13:18:27,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:27,681 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-18 13:18:27,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-11-18 13:18:27,682 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2024-11-18 13:18:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-18 13:18:27,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:27,682 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-18 13:18:27,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 13:18:27,684 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:27,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:27,684 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2024-11-18 13:18:27,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:27,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619906747] [2024-11-18 13:18:27,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:18:27,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:18:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:18:27,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:27,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619906747] [2024-11-18 13:18:27,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619906747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:18:27,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:18:27,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 13:18:27,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156316047] [2024-11-18 13:18:27,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:18:27,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 13:18:27,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:27,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 13:18:27,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 13:18:27,785 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-18 13:18:27,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:27,809 INFO L93 Difference]: Finished difference Result 16 states and 20 transitions. [2024-11-18 13:18:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 13:18:27,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2024-11-18 13:18:27,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:27,810 INFO L225 Difference]: With dead ends: 16 [2024-11-18 13:18:27,810 INFO L226 Difference]: Without dead ends: 10 [2024-11-18 13:18:27,810 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 [2024-11-18 13:18:27,812 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:27,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:18:27,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-18 13:18:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-18 13:18:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2024-11-18 13:18:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-11-18 13:18:27,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2024-11-18 13:18:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:27,817 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-11-18 13:18:27,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-18 13:18:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-11-18 13:18:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-18 13:18:27,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:27,820 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:18:27,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:18:27,820 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:27,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:27,825 INFO L85 PathProgramCache]: Analyzing trace with hash 295691924, now seen corresponding path program 1 times [2024-11-18 13:18:27,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:27,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826605381] [2024-11-18 13:18:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:18:27,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:18:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:18:27,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:27,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826605381] [2024-11-18 13:18:27,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826605381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:18:27,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136403650] [2024-11-18 13:18:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:18:27,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:27,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:18:27,926 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:18:27,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:18:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:18:27,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 13:18:27,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:18:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:18:28,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:18:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:18:28,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136403650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:18:28,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:18:28,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-18 13:18:28,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906664165] [2024-11-18 13:18:28,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:18:28,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 13:18:28,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:28,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 13:18:28,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:18:28,078 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:28,121 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2024-11-18 13:18:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 13:18:28,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-18 13:18:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:28,122 INFO L225 Difference]: With dead ends: 21 [2024-11-18 13:18:28,123 INFO L226 Difference]: Without dead ends: 15 [2024-11-18 13:18:28,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-18 13:18:28,125 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:28,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:18:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-18 13:18:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-18 13:18:28,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:28,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-18 13:18:28,132 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2024-11-18 13:18:28,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:28,133 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-18 13:18:28,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:28,133 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-18 13:18:28,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-18 13:18:28,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:28,134 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-18 13:18:28,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:18:28,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:28,335 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:28,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:28,336 INFO L85 PathProgramCache]: Analyzing trace with hash 598153473, now seen corresponding path program 1 times [2024-11-18 13:18:28,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:28,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151752210] [2024-11-18 13:18:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:18:28,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:18:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:18:28,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:28,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151752210] [2024-11-18 13:18:28,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151752210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:18:28,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849633305] [2024-11-18 13:18:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:18:28,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:28,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:18:28,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:18:28,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:18:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:18:28,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-18 13:18:28,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:18:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:18:28,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:18:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:18:28,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849633305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:18:28,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:18:28,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-18 13:18:28,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854332071] [2024-11-18 13:18:28,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:18:28,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 13:18:28,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:28,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 13:18:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:18:28,611 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:28,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:28,645 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-11-18 13:18:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:18:28,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-18 13:18:28,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:28,646 INFO L225 Difference]: With dead ends: 32 [2024-11-18 13:18:28,647 INFO L226 Difference]: Without dead ends: 23 [2024-11-18 13:18:28,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:18:28,648 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:28,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:18:28,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-18 13:18:28,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-18 13:18:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-18 13:18:28,653 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2024-11-18 13:18:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:28,654 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-18 13:18:28,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-18 13:18:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-18 13:18:28,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:28,655 INFO L215 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1, 1] [2024-11-18 13:18:28,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 13:18:28,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 13:18:28,860 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:28,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:28,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1175196403, now seen corresponding path program 2 times [2024-11-18 13:18:28,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:28,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50744457] [2024-11-18 13:18:28,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:18:28,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:28,887 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:18:28,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:18:29,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:29,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50744457] [2024-11-18 13:18:29,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50744457] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:18:29,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485423254] [2024-11-18 13:18:29,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:18:29,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:18:29,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:18:29,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:18:29,120 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:18:29,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:29,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 13:18:29,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:18:29,185 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:18:29,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:18:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-18 13:18:29,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485423254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:18:29,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:18:29,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-18 13:18:29,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70091537] [2024-11-18 13:18:29,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:18:29,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-18 13:18:29,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:29,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-18 13:18:29,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:18:29,359 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2024-11-18 13:18:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:29,424 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2024-11-18 13:18:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 13:18:29,425 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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 22 [2024-11-18 13:18:29,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:29,427 INFO L225 Difference]: With dead ends: 48 [2024-11-18 13:18:29,427 INFO L226 Difference]: Without dead ends: 39 [2024-11-18 13:18:29,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-18 13:18:29,428 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:29,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:18:29,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-18 13:18:29,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-18 13:18:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2024-11-18 13:18:29,437 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 22 [2024-11-18 13:18:29,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:29,437 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2024-11-18 13:18:29,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 17 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) [2024-11-18 13:18:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2024-11-18 13:18:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-18 13:18:29,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:29,439 INFO L215 NwaCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1, 1] [2024-11-18 13:18:29,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 13:18:29,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:29,640 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:29,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:29,640 INFO L85 PathProgramCache]: Analyzing trace with hash -713215707, now seen corresponding path program 3 times [2024-11-18 13:18:29,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:29,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081524720] [2024-11-18 13:18:29,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:18:29,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:29,659 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 13:18:29,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-18 13:18:29,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:29,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081524720] [2024-11-18 13:18:29,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081524720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:18:29,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213895693] [2024-11-18 13:18:29,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:18:29,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:29,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:18:29,745 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:18:29,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:18:29,786 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-18 13:18:29,787 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:29,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:18:29,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:18:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-18 13:18:29,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:18:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2024-11-18 13:18:29,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213895693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:18:29,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:18:29,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-18 13:18:29,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546514415] [2024-11-18 13:18:29,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:18:29,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 13:18:29,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:29,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 13:18:29,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:18:29,860 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:29,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:29,901 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2024-11-18 13:18:29,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 13:18:29,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-18 13:18:29,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:29,904 INFO L225 Difference]: With dead ends: 51 [2024-11-18 13:18:29,906 INFO L226 Difference]: Without dead ends: 47 [2024-11-18 13:18:29,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-18 13:18:29,907 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:29,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:18:29,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-18 13:18:29,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-18 13:18:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:29,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-11-18 13:18:29,923 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 38 [2024-11-18 13:18:29,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:29,924 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-11-18 13:18:29,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-11-18 13:18:29,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-18 13:18:29,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:29,926 INFO L215 NwaCegarLoop]: trace histogram [20, 14, 6, 1, 1, 1, 1, 1, 1] [2024-11-18 13:18:29,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:18:30,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:30,127 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:30,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:30,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1558234681, now seen corresponding path program 4 times [2024-11-18 13:18:30,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:30,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336582517] [2024-11-18 13:18:30,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:18:30,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:30,170 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:18:30,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:18:30,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:30,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336582517] [2024-11-18 13:18:30,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336582517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:18:30,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230526684] [2024-11-18 13:18:30,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-18 13:18:30,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:30,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:18:30,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:18:30,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:18:30,619 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-18 13:18:30,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:30,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-18 13:18:30,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:18:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:18:30,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:18:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:18:31,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230526684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:18:31,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:18:31,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-18 13:18:31,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730030466] [2024-11-18 13:18:31,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:18:31,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-18 13:18:31,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:31,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-18 13:18:31,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 13:18:31,140 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 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) [2024-11-18 13:18:31,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:31,241 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2024-11-18 13:18:31,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-18 13:18:31,241 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 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 46 [2024-11-18 13:18:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:31,242 INFO L225 Difference]: With dead ends: 96 [2024-11-18 13:18:31,243 INFO L226 Difference]: Without dead ends: 79 [2024-11-18 13:18:31,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2024-11-18 13:18:31,244 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:31,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:18:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-18 13:18:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-18 13:18:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0897435897435896) internal successors, (85), 78 states have internal predecessors, (85), 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) [2024-11-18 13:18:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2024-11-18 13:18:31,261 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 46 [2024-11-18 13:18:31,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:31,262 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2024-11-18 13:18:31,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 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) [2024-11-18 13:18:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2024-11-18 13:18:31,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-18 13:18:31,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:31,268 INFO L215 NwaCegarLoop]: trace histogram [36, 30, 6, 1, 1, 1, 1, 1, 1] [2024-11-18 13:18:31,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 13:18:31,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:31,473 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:31,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:31,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1084322199, now seen corresponding path program 5 times [2024-11-18 13:18:31,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:31,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591655195] [2024-11-18 13:18:31,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:18:31,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:31,559 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-11-18 13:18:31,564 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 390 proven. 36 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2024-11-18 13:18:31,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:31,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591655195] [2024-11-18 13:18:31,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591655195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:18:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092092840] [2024-11-18 13:18:31,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-18 13:18:31,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:31,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:18:31,764 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:18:31,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 13:18:31,838 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-11-18 13:18:31,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:31,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-18 13:18:31,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:18:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 341 proven. 930 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:18:32,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:18:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 341 proven. 930 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-18 13:18:33,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092092840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:18:33,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:18:33,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 33, 33] total 59 [2024-11-18 13:18:33,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963196120] [2024-11-18 13:18:33,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:18:33,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-18 13:18:33,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:33,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-18 13:18:33,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 13:18:33,504 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 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) [2024-11-18 13:18:33,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:33,689 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2024-11-18 13:18:33,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-18 13:18:33,690 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 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 78 [2024-11-18 13:18:33,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:33,692 INFO L225 Difference]: With dead ends: 139 [2024-11-18 13:18:33,692 INFO L226 Difference]: Without dead ends: 122 [2024-11-18 13:18:33,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 94 SyntacticMatches, 12 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2024-11-18 13:18:33,696 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:33,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 13:18:33,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-18 13:18:33,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2024-11-18 13:18:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0666666666666667) internal successors, (128), 120 states have internal predecessors, (128), 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) [2024-11-18 13:18:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2024-11-18 13:18:33,714 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 78 [2024-11-18 13:18:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:33,714 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2024-11-18 13:18:33,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.152542372881356) internal successors, (127), 59 states have internal predecessors, (127), 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) [2024-11-18 13:18:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2024-11-18 13:18:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-18 13:18:33,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:33,720 INFO L215 NwaCegarLoop]: trace histogram [57, 50, 7, 1, 1, 1, 1, 1, 1] [2024-11-18 13:18:33,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 13:18:33,920 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 [2024-11-18 13:18:33,921 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:33,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:33,921 INFO L85 PathProgramCache]: Analyzing trace with hash -789372982, now seen corresponding path program 6 times [2024-11-18 13:18:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:33,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095984299] [2024-11-18 13:18:33,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:18:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:33,949 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-11-18 13:18:33,950 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 750 proven. 49 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2024-11-18 13:18:34,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:34,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095984299] [2024-11-18 13:18:34,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095984299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:18:34,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544138608] [2024-11-18 13:18:34,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-18 13:18:34,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:34,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:18:34,068 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:18:34,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 13:18:34,128 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-11-18 13:18:34,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:34,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-18 13:18:34,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:18:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 750 proven. 49 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2024-11-18 13:18:34,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:18:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 750 proven. 49 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2024-11-18 13:18:34,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544138608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:18:34,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:18:34,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-18 13:18:34,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898789234] [2024-11-18 13:18:34,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:18:34,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 13:18:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:34,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 13:18:34,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:18:34,267 INFO L87 Difference]: Start difference. First operand 121 states and 128 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:34,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:34,322 INFO L93 Difference]: Finished difference Result 143 states and 167 transitions. [2024-11-18 13:18:34,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 13:18:34,323 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-11-18 13:18:34,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:34,324 INFO L225 Difference]: With dead ends: 143 [2024-11-18 13:18:34,324 INFO L226 Difference]: Without dead ends: 139 [2024-11-18 13:18:34,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2024-11-18 13:18:34,325 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:34,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:18:34,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-18 13:18:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-18 13:18:34,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.1231884057971016) internal successors, (155), 138 states have internal predecessors, (155), 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) [2024-11-18 13:18:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2024-11-18 13:18:34,338 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 120 [2024-11-18 13:18:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:34,339 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2024-11-18 13:18:34,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-18 13:18:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2024-11-18 13:18:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-18 13:18:34,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:34,341 INFO L215 NwaCegarLoop]: trace histogram [66, 50, 16, 1, 1, 1, 1, 1, 1] [2024-11-18 13:18:34,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 13:18:34,541 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 [2024-11-18 13:18:34,542 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:34,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash 777466327, now seen corresponding path program 7 times [2024-11-18 13:18:34,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:34,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214537344] [2024-11-18 13:18:34,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:18:34,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:18:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:18:37,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:37,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214537344] [2024-11-18 13:18:37,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214537344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:18:37,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332178606] [2024-11-18 13:18:37,799 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-18 13:18:37,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:37,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:18:37,801 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:18:37,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 13:18:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:18:37,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-18 13:18:37,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:18:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:18:38,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:18:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:18:41,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332178606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:18:41,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:18:41,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 103 [2024-11-18 13:18:41,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745894054] [2024-11-18 13:18:41,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:18:41,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-18 13:18:41,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:41,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-18 13:18:41,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2024-11-18 13:18:41,533 INFO L87 Difference]: Start difference. First operand 139 states and 155 transitions. Second operand has 103 states, 103 states have (on average 2.1844660194174756) internal successors, (225), 103 states have internal predecessors, (225), 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) [2024-11-18 13:18:42,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:42,079 INFO L93 Difference]: Finished difference Result 211 states and 294 transitions. [2024-11-18 13:18:42,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-18 13:18:42,080 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.1844660194174756) internal successors, (225), 103 states have internal predecessors, (225), 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 138 [2024-11-18 13:18:42,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:42,081 INFO L225 Difference]: With dead ends: 211 [2024-11-18 13:18:42,081 INFO L226 Difference]: Without dead ends: 207 [2024-11-18 13:18:42,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 208 SyntacticMatches, 34 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2024-11-18 13:18:42,084 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:42,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 30 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:18:42,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-18 13:18:42,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-18 13:18:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.2475728155339805) internal successors, (257), 206 states have internal predecessors, (257), 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) [2024-11-18 13:18:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 257 transitions. [2024-11-18 13:18:42,097 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 257 transitions. Word has length 138 [2024-11-18 13:18:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:42,098 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 257 transitions. [2024-11-18 13:18:42,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.1844660194174756) internal successors, (225), 103 states have internal predecessors, (225), 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) [2024-11-18 13:18:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 257 transitions. [2024-11-18 13:18:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-11-18 13:18:42,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:42,101 INFO L215 NwaCegarLoop]: trace histogram [100, 50, 50, 1, 1, 1, 1, 1, 1] [2024-11-18 13:18:42,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 13:18:42,301 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 [2024-11-18 13:18:42,302 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:42,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:42,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1394062977, now seen corresponding path program 8 times [2024-11-18 13:18:42,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:42,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540962290] [2024-11-18 13:18:42,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:18:42,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:42,368 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:18:42,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2024-11-18 13:18:44,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:44,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540962290] [2024-11-18 13:18:44,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540962290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:18:44,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448890439] [2024-11-18 13:18:44,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 13:18:44,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:44,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:18:44,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:18:44,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 13:18:44,380 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 13:18:44,380 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:44,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 105 conjuncts are in the unsatisfiable core [2024-11-18 13:18:44,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:18:44,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2024-11-18 13:18:44,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:18:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2024-11-18 13:18:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448890439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 13:18:44,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 13:18:44,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 55 [2024-11-18 13:18:44,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466966538] [2024-11-18 13:18:44,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 13:18:44,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-18 13:18:44,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:44,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-18 13:18:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2024-11-18 13:18:44,969 INFO L87 Difference]: Start difference. First operand 207 states and 257 transitions. Second operand has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 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) [2024-11-18 13:18:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:46,215 INFO L93 Difference]: Finished difference Result 2862 states and 4237 transitions. [2024-11-18 13:18:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-18 13:18:46,216 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 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 206 [2024-11-18 13:18:46,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:46,229 INFO L225 Difference]: With dead ends: 2862 [2024-11-18 13:18:46,229 INFO L226 Difference]: Without dead ends: 2858 [2024-11-18 13:18:46,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2024-11-18 13:18:46,232 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 51 mSDsluCounter, 5410 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 5517 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:46,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 5517 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-18 13:18:46,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2024-11-18 13:18:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 209. [2024-11-18 13:18:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.25) internal successors, (260), 208 states have internal predecessors, (260), 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) [2024-11-18 13:18:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 260 transitions. [2024-11-18 13:18:46,297 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 260 transitions. Word has length 206 [2024-11-18 13:18:46,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:46,297 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 260 transitions. [2024-11-18 13:18:46,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.981818181818182) internal successors, (109), 55 states have internal predecessors, (109), 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) [2024-11-18 13:18:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 260 transitions. [2024-11-18 13:18:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-18 13:18:46,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:18:46,302 INFO L215 NwaCegarLoop]: trace histogram [101, 51, 50, 1, 1, 1, 1, 1, 1] [2024-11-18 13:18:46,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-18 13:18:46,502 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 [2024-11-18 13:18:46,502 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:18:46,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:18:46,503 INFO L85 PathProgramCache]: Analyzing trace with hash -283085658, now seen corresponding path program 9 times [2024-11-18 13:18:46,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:18:46,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868886370] [2024-11-18 13:18:46,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:18:46,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:18:46,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2024-11-18 13:18:46,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 10002 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:18:51,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:18:51,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868886370] [2024-11-18 13:18:51,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868886370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:18:51,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115338507] [2024-11-18 13:18:51,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-18 13:18:51,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:18:51,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:18:51,533 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 13:18:51,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-18 13:18:51,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2024-11-18 13:18:51,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 13:18:51,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-18 13:18:51,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:18:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 10201 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 13:18:51,966 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:18:51,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115338507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:18:51,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:18:51,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [103] total 104 [2024-11-18 13:18:51,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278482378] [2024-11-18 13:18:51,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:18:51,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-18 13:18:51,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:18:51,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-18 13:18:51,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5256, Invalid=5456, Unknown=0, NotChecked=0, Total=10712 [2024-11-18 13:18:51,972 INFO L87 Difference]: Start difference. First operand 209 states and 260 transitions. Second operand has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 103 states have internal predecessors, (208), 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) [2024-11-18 13:18:52,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:18:52,719 INFO L93 Difference]: Finished difference Result 310 states and 411 transitions. [2024-11-18 13:18:52,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-18 13:18:52,719 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 103 states have internal predecessors, (208), 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 208 [2024-11-18 13:18:52,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:18:52,720 INFO L225 Difference]: With dead ends: 310 [2024-11-18 13:18:52,720 INFO L226 Difference]: Without dead ends: 0 [2024-11-18 13:18:52,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5256, Invalid=5456, Unknown=0, NotChecked=0, Total=10712 [2024-11-18 13:18:52,725 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 13:18:52,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 13:18:52,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-18 13:18:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-18 13:18:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-18 13:18:52,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-18 13:18:52,726 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 208 [2024-11-18 13:18:52,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:18:52,727 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-18 13:18:52,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.0194174757281553) internal successors, (208), 103 states have internal predecessors, (208), 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) [2024-11-18 13:18:52,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-18 13:18:52,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-18 13:18:52,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-18 13:18:52,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-18 13:18:52,931 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 [2024-11-18 13:18:52,934 INFO L407 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1] [2024-11-18 13:18:52,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-18 13:18:55,508 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-18 13:18:55,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:18:55 BoogieIcfgContainer [2024-11-18 13:18:55,552 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-18 13:18:55,553 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-18 13:18:55,553 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-18 13:18:55,553 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-18 13:18:55,553 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:18:27" (3/4) ... [2024-11-18 13:18:55,557 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-18 13:18:55,563 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-18 13:18:55,563 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-18 13:18:55,564 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-18 13:18:55,564 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-18 13:18:55,646 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-18 13:18:55,646 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-18 13:18:55,646 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-18 13:18:55,647 INFO L158 Benchmark]: Toolchain (without parser) took 28942.75ms. Allocated memory was 165.7MB in the beginning and 450.9MB in the end (delta: 285.2MB). Free memory was 130.4MB in the beginning and 344.9MB in the end (delta: -214.5MB). Peak memory consumption was 71.2MB. Max. memory is 16.1GB. [2024-11-18 13:18:55,647 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 165.7MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:18:55,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.22ms. Allocated memory is still 165.7MB. Free memory was 130.4MB in the beginning and 118.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:18:55,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.47ms. Allocated memory is still 165.7MB. Free memory was 118.6MB in the beginning and 116.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-18 13:18:55,648 INFO L158 Benchmark]: Boogie Preprocessor took 23.96ms. Allocated memory is still 165.7MB. Free memory was 116.5MB in the beginning and 115.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-18 13:18:55,648 INFO L158 Benchmark]: RCFGBuilder took 352.74ms. Allocated memory is still 165.7MB. Free memory was 115.2MB in the beginning and 132.4MB in the end (delta: -17.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-18 13:18:55,648 INFO L158 Benchmark]: TraceAbstraction took 28203.75ms. Allocated memory was 165.7MB in the beginning and 450.9MB in the end (delta: 285.2MB). Free memory was 132.3MB in the beginning and 349.1MB in the end (delta: -216.8MB). Peak memory consumption was 228.8MB. Max. memory is 16.1GB. [2024-11-18 13:18:55,648 INFO L158 Benchmark]: Witness Printer took 93.64ms. Allocated memory is still 450.9MB. Free memory was 349.1MB in the beginning and 344.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-18 13:18:55,653 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 165.7MB. Free memory is still 130.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.22ms. Allocated memory is still 165.7MB. Free memory was 130.4MB in the beginning and 118.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.47ms. Allocated memory is still 165.7MB. Free memory was 118.6MB in the beginning and 116.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.96ms. Allocated memory is still 165.7MB. Free memory was 116.5MB in the beginning and 115.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 352.74ms. Allocated memory is still 165.7MB. Free memory was 115.2MB in the beginning and 132.4MB in the end (delta: -17.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 28203.75ms. Allocated memory was 165.7MB in the beginning and 450.9MB in the end (delta: 285.2MB). Free memory was 132.3MB in the beginning and 349.1MB in the end (delta: -216.8MB). Peak memory consumption was 228.8MB. Max. memory is 16.1GB. * Witness Printer took 93.64ms. Allocated memory is still 450.9MB. Free memory was 349.1MB in the beginning and 344.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.5s, OverallIterations: 12, TraceHistogramMax: 101, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 5718 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5538 mSDsCounter, 170 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4303 IncrementalHoareTripleChecker+Invalid, 4473 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 170 mSolverCounterUnsat, 180 mSDtfsCounter, 4303 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1819 GetRequests, 1378 SyntacticMatches, 47 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3275 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=11, InterpolantAutomatonStates: 411, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 2650 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 18.6s InterpolantComputationTime, 1768 NumberOfCodeBlocks, 1616 NumberOfCodeBlocksAsserted, 372 NumberOfCheckSat, 2407 ConstructedInterpolants, 0 QuantifiedInterpolants, 5942 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2058 ConjunctsInSsa, 353 ConjunctsInUnsatCore, 31 InterpolantComputations, 3 PerfectInterpolantSequences, 40867/79316 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((22 == x) && (y == 50)) || ((x == 48) && (y == 50))) || ((x == 36) && (y == 50))) || ((x == 38) && (y == 50))) || ((87 == x) && (87 == y))) || ((y == 55) && (x == 55))) || ((3 == x) && (y == 50))) || ((x == 54) && (y == 54))) || ((y == 90) && (x == 90))) || ((100 <= x) && (y == 100))) || ((67 == x) && (67 == y))) || ((84 == x) && (84 == y))) || ((y == 80) && (x == 80))) || ((5 == x) && (y == 50))) || ((y == 50) && (x == 33))) || ((77 == y) && (77 == x))) || ((81 == x) && (81 == y))) || ((y == 50) && (42 == x))) || ((y == 50) && (x == 37))) || ((y == 85) && (x == 85))) || ((y == 58) && (x == 58))) || ((x == 34) && (y == 50))) || ((69 == x) && (69 == y))) || ((y == 50) && (x == 10))) || ((x == 1) && (y == 50))) || ((x == 11) && (y == 50))) || ((59 == y) && (59 == x))) || ((51 == x) && (51 == y))) || ((71 == y) && (71 == x))) || ((y == 50) && (29 == x))) || ((2 == x) && (y == 50))) || ((y == 50) && (x == 27))) || ((x == 26) && (y == 50))) || ((y == 50) && (x == 0))) || ((y == 50) && (x == 25))) || ((56 == y) && (56 == x))) || ((y == 50) && (x == 12))) || ((y == 50) && (x == 39))) || ((y == 50) && (x == 20))) || ((y == 50) && (30 == x))) || ((57 == y) && (57 == x))) || ((9 == x) && (y == 50))) || ((x == 63) && (y == 63))) || ((x == 15) && (y == 50))) || ((x == 83) && (y == 83))) || ((72 == y) && (72 == x))) || ((66 == y) && (66 == x))) || ((41 == x) && (y == 50))) || ((y == 50) && (6 == x))) || ((62 == y) && (62 == x))) || ((x == 73) && (y == 73))) || ((32 == x) && (y == 50))) || ((x == 79) && (y == 79))) || ((x == 24) && (y == 50))) || ((52 == x) && (52 == y))) || ((y == 50) && (47 == x))) || ((x == 8) && (y == 50))) || ((98 == x) && (98 == y))) || ((88 == y) && (88 == x))) || ((y == 50) && (35 == x))) || ((x == 65) && (y == 65))) || ((21 == x) && (y == 50))) || ((89 == x) && (89 == y))) || ((x == 60) && (y == 60))) || ((x == 43) && (y == 50))) || ((76 == x) && (76 == y))) || ((95 == y) && (95 == x))) || ((y == 50) && (14 == x))) || ((y == 50) && (x == 28))) || ((40 == x) && (y == 50))) || ((94 == y) && (94 == x))) || ((x == 70) && (y == 70))) || ((7 == x) && (y == 50))) || ((31 == x) && (y == 50))) || ((y == 50) && (x == 45))) || ((y == 50) && (x == 17))) || ((53 == x) && (53 == y))) || ((x == 78) && (y == 78))) || ((y == 74) && (x == 74))) || ((y == 50) && (49 == x))) || ((x == 86) && (y == 86))) || ((68 == y) && (68 == x))) || ((x == 13) && (y == 50))) || ((23 == x) && (y == 50))) || ((y == 50) && (44 == x))) || ((y == 75) && (x == 75))) || ((x == 99) && (y == 99))) || ((y == 61) && (x == 61))) || ((y == 50) && (x == 50))) || ((46 == x) && (y == 50))) || ((97 == y) && (97 == x))) || ((y == 50) && (x == 18))) || ((92 == x) && (92 == y))) || ((y == 50) && (x == 4))) || ((x == 96) && (y == 96))) || ((x == 93) && (y == 93))) || ((64 == x) && (64 == y))) || ((16 == x) && (y == 50))) || ((82 == y) && (82 == x))) || ((91 == x) && (91 == y))) || ((y == 50) && (19 == x))) RESULT: Ultimate proved your program to be correct! [2024-11-18 13:18:55,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE