./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gr2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/gr2006.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 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 01:03:12,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 01:03:12,593 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 01:03:12,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 01:03:12,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 01:03:12,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 01:03:12,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 01:03:12,617 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 01:03:12,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 01:03:12,618 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 01:03:12,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 01:03:12,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 01:03:12,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 01:03:12,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 01:03:12,619 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 01:03:12,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 01:03:12,619 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 01:03:12,620 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 01:03:12,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 01:03:12,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 01:03:12,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 01:03:12,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 01:03:12,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 01:03:12,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 01:03:12,624 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 01:03:12,624 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 01:03:12,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 01:03:12,624 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 01:03:12,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 01:03:12,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 01:03:12,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 01:03:12,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 01:03:12,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:03:12,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 01:03:12,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 01:03:12,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 01:03:12,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 01:03:12,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 01:03:12,626 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 01:03:12,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 01:03:12,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 01:03:12,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 01:03:12,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 [2024-11-22 01:03:12,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 01:03:12,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 01:03:12,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 01:03:12,885 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 01:03:12,886 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 01:03:12,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gr2006.i [2024-11-22 01:03:14,083 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 01:03:14,233 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 01:03:14,233 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i [2024-11-22 01:03:14,239 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b7d358b9/6c312dd5469c4df6a29f99188dffd4f6/FLAG4e2c6cccd [2024-11-22 01:03:14,249 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b7d358b9/6c312dd5469c4df6a29f99188dffd4f6 [2024-11-22 01:03:14,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 01:03:14,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 01:03:14,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 01:03:14,255 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 01:03:14,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 01:03:14,259 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659ee8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14, skipping insertion in model container [2024-11-22 01:03:14,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,289 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 01:03:14,429 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/gr2006.i[895,908] [2024-11-22 01:03:14,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:03:14,450 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 01:03:14,462 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/gr2006.i[895,908] [2024-11-22 01:03:14,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 01:03:14,479 INFO L204 MainTranslator]: Completed translation [2024-11-22 01:03:14,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14 WrapperNode [2024-11-22 01:03:14,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 01:03:14,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 01:03:14,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 01:03:14,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 01:03:14,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,492 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,506 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2024-11-22 01:03:14,507 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 01:03:14,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 01:03:14,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 01:03:14,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 01:03:14,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,516 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,524 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 01:03:14,525 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,532 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,533 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 01:03:14,533 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 01:03:14,534 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 01:03:14,534 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 01:03:14,535 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (1/1) ... [2024-11-22 01:03:14,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 01:03:14,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:14,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 01:03:14,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 01:03:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 01:03:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 01:03:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 01:03:14,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 01:03:14,648 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 01:03:14,650 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 01:03:14,754 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-22 01:03:14,755 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 01:03:14,764 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 01:03:14,764 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 01:03:14,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:14 BoogieIcfgContainer [2024-11-22 01:03:14,765 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 01:03:14,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 01:03:14,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 01:03:14,769 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 01:03:14,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:03:14" (1/3) ... [2024-11-22 01:03:14,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b767174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:14, skipping insertion in model container [2024-11-22 01:03:14,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:14" (2/3) ... [2024-11-22 01:03:14,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b767174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:14, skipping insertion in model container [2024-11-22 01:03:14,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:14" (3/3) ... [2024-11-22 01:03:14,771 INFO L112 eAbstractionObserver]: Analyzing ICFG gr2006.i [2024-11-22 01:03:14,783 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 01:03:14,784 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 01:03:14,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 01:03:14,834 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;@5c8b5953, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 01:03:14,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 01:03:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 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) [2024-11-22 01:03:14,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-22 01:03:14,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:14,842 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 01:03:14,842 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:14,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:14,846 INFO L85 PathProgramCache]: Analyzing trace with hash 890091623, now seen corresponding path program 1 times [2024-11-22 01:03:14,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:14,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972546421] [2024-11-22 01:03:14,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:14,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:14,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:14,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972546421] [2024-11-22 01:03:14,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972546421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:03:14,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:03:14,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 01:03:14,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491785971] [2024-11-22 01:03:14,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:03:14,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 01:03:14,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:14,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 01:03:14,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:03:14,984 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 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) 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) [2024-11-22 01:03:14,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:14,992 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2024-11-22 01:03:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 01:03:14,994 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 [2024-11-22 01:03:14,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:14,998 INFO L225 Difference]: With dead ends: 21 [2024-11-22 01:03:14,999 INFO L226 Difference]: Without dead ends: 9 [2024-11-22 01:03:15,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 01:03:15,003 INFO L432 NwaCegarLoop]: 14 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, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:15,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:03:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2024-11-22 01:03:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2024-11-22 01:03:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-11-22 01:03:15,028 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2024-11-22 01:03:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:15,028 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-22 01:03:15,028 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) [2024-11-22 01:03:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-11-22 01:03:15,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 01:03:15,029 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:15,029 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:15,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 01:03:15,029 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:15,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash 297871632, now seen corresponding path program 1 times [2024-11-22 01:03:15,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:15,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171603356] [2024-11-22 01:03:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:15,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:15,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171603356] [2024-11-22 01:03:15,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171603356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:03:15,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:03:15,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 01:03:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068750022] [2024-11-22 01:03:15,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:03:15,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 01:03:15,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:15,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 01:03:15,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:03:15,105 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:15,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:15,121 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2024-11-22 01:03:15,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 01:03:15,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 [2024-11-22 01:03:15,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:15,123 INFO L225 Difference]: With dead ends: 20 [2024-11-22 01:03:15,123 INFO L226 Difference]: Without dead ends: 13 [2024-11-22 01:03:15,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 01:03:15,124 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:15,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:03:15,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-22 01:03:15,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2024-11-22 01:03:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2024-11-22 01:03:15,129 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2024-11-22 01:03:15,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:15,130 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-11-22 01:03:15,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:15,130 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2024-11-22 01:03:15,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 01:03:15,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:15,131 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:15,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 01:03:15,131 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:15,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash 296024590, now seen corresponding path program 1 times [2024-11-22 01:03:15,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:15,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578564919] [2024-11-22 01:03:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:15,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:15,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:15,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:15,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578564919] [2024-11-22 01:03:15,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578564919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 01:03:15,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 01:03:15,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 01:03:15,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780669347] [2024-11-22 01:03:15,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 01:03:15,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 01:03:15,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:15,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 01:03:15,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:03:15,190 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:15,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:15,209 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2024-11-22 01:03:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 01:03:15,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 [2024-11-22 01:03:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:15,210 INFO L225 Difference]: With dead ends: 18 [2024-11-22 01:03:15,210 INFO L226 Difference]: Without dead ends: 14 [2024-11-22 01:03:15,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 01:03:15,211 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:15,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:03:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-22 01:03:15,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-11-22 01:03:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-11-22 01:03:15,217 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2024-11-22 01:03:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:15,218 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-11-22 01:03:15,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-11-22 01:03:15,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 01:03:15,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:15,219 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:15,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 01:03:15,220 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:15,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1661002755, now seen corresponding path program 1 times [2024-11-22 01:03:15,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:15,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867849299] [2024-11-22 01:03:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:15,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:15,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:15,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867849299] [2024-11-22 01:03:15,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867849299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:03:15,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720754086] [2024-11-22 01:03:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 01:03:15,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:15,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:15,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:03:15,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 01:03:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:15,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 01:03:15,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:03:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:15,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:03:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:15,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720754086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:03:15,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:03:15,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-22 01:03:15,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743644004] [2024-11-22 01:03:15,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:03:15,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 01:03:15,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 01:03:15,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:03:15,406 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:15,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:15,430 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2024-11-22 01:03:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 01:03:15,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 11 [2024-11-22 01:03:15,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:15,431 INFO L225 Difference]: With dead ends: 32 [2024-11-22 01:03:15,431 INFO L226 Difference]: Without dead ends: 25 [2024-11-22 01:03:15,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-22 01:03:15,433 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:15,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:03:15,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-22 01:03:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-11-22 01:03:15,440 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) [2024-11-22 01:03:15,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-22 01:03:15,442 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 11 [2024-11-22 01:03:15,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:15,442 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-22 01:03:15,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:15,442 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-22 01:03:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 01:03:15,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:15,443 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:15,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 01:03:15,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:15,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:15,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:15,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1073415472, now seen corresponding path program 2 times [2024-11-22 01:03:15,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:15,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601510925] [2024-11-22 01:03:15,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:03:15,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:15,665 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:03:15,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:15,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:15,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601510925] [2024-11-22 01:03:15,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601510925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:03:15,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360843603] [2024-11-22 01:03:15,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:03:15,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:15,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:15,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:03:15,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 01:03:15,806 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:03:15,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:15,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 01:03:15,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:03:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 01:03:15,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:03:15,955 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 01:03:15,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360843603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:03:15,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:03:15,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-22 01:03:15,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892586682] [2024-11-22 01:03:15,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:03:15,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 01:03:15,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:15,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 01:03:15,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-22 01:03:15,958 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:16,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:16,054 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2024-11-22 01:03:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 01:03:16,055 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-22 01:03:16,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:16,055 INFO L225 Difference]: With dead ends: 47 [2024-11-22 01:03:16,056 INFO L226 Difference]: Without dead ends: 40 [2024-11-22 01:03:16,057 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2024-11-22 01:03:16,058 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:16,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 37 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:03:16,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-22 01:03:16,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2024-11-22 01:03:16,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 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) [2024-11-22 01:03:16,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-22 01:03:16,067 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 20 [2024-11-22 01:03:16,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:16,068 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-22 01:03:16,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-22 01:03:16,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-22 01:03:16,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:16,069 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:16,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 01:03:16,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:16,270 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:16,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1219917565, now seen corresponding path program 3 times [2024-11-22 01:03:16,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:16,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340667475] [2024-11-22 01:03:16,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:03:16,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:16,308 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 01:03:16,341 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 48 proven. 75 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 01:03:16,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:16,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340667475] [2024-11-22 01:03:16,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340667475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:03:16,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186397635] [2024-11-22 01:03:16,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:03:16,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:16,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:16,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:03:16,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 01:03:16,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-22 01:03:16,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:16,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-22 01:03:16,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:03:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 9 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:16,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:03:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 9 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:16,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186397635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:03:16,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:03:16,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2024-11-22 01:03:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576163827] [2024-11-22 01:03:16,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:03:16,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 01:03:16,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:16,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 01:03:16,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=551, Unknown=0, NotChecked=0, Total=812 [2024-11-22 01:03:16,935 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:17,344 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2024-11-22 01:03:17,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-22 01:03:17,347 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 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 35 [2024-11-22 01:03:17,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:17,349 INFO L225 Difference]: With dead ends: 123 [2024-11-22 01:03:17,349 INFO L226 Difference]: Without dead ends: 103 [2024-11-22 01:03:17,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=981, Invalid=2325, Unknown=0, NotChecked=0, Total=3306 [2024-11-22 01:03:17,353 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:17,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 70 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:03:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-22 01:03:17,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 84. [2024-11-22 01:03:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0843373493975903) internal successors, (90), 83 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2024-11-22 01:03:17,365 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 35 [2024-11-22 01:03:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:17,365 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2024-11-22 01:03:17,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0344827586206895) internal successors, (88), 29 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2024-11-22 01:03:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-22 01:03:17,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:17,367 INFO L215 NwaCegarLoop]: trace histogram [26, 25, 20, 6, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:17,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 01:03:17,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:17,572 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:17,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:17,573 INFO L85 PathProgramCache]: Analyzing trace with hash 62536891, now seen corresponding path program 4 times [2024-11-22 01:03:17,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:17,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917796986] [2024-11-22 01:03:17,573 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 01:03:17,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:17,591 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 01:03:17,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 281 proven. 672 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 01:03:17,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:17,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917796986] [2024-11-22 01:03:17,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917796986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:03:18,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256904283] [2024-11-22 01:03:18,000 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 01:03:18,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:18,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:18,002 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:03:18,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 01:03:18,053 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 01:03:18,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:18,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 01:03:18,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:03:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 330 proven. 610 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-22 01:03:18,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:03:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 330 proven. 610 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-22 01:03:18,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256904283] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:03:18,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:03:18,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 45 [2024-11-22 01:03:18,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374562578] [2024-11-22 01:03:18,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:03:18,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-22 01:03:18,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:18,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-22 01:03:18,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 01:03:18,731 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:18,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:18,829 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2024-11-22 01:03:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-22 01:03:18,830 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 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 83 [2024-11-22 01:03:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:18,832 INFO L225 Difference]: With dead ends: 180 [2024-11-22 01:03:18,833 INFO L226 Difference]: Without dead ends: 157 [2024-11-22 01:03:18,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2024-11-22 01:03:18,835 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:18,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 67 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:03:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-22 01:03:18,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2024-11-22 01:03:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.0460526315789473) internal successors, (159), 152 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 159 transitions. [2024-11-22 01:03:18,849 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 159 transitions. Word has length 83 [2024-11-22 01:03:18,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:18,849 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 159 transitions. [2024-11-22 01:03:18,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 159 transitions. [2024-11-22 01:03:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-22 01:03:18,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:18,851 INFO L215 NwaCegarLoop]: trace histogram [49, 48, 43, 6, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:18,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 01:03:19,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:19,055 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:19,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:19,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1374914226, now seen corresponding path program 5 times [2024-11-22 01:03:19,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:19,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268681778] [2024-11-22 01:03:19,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 01:03:19,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:19,115 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-11-22 01:03:19,116 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:20,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 698 proven. 2795 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-22 01:03:20,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:20,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268681778] [2024-11-22 01:03:20,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268681778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:03:20,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049615234] [2024-11-22 01:03:20,287 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 01:03:20,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:20,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:20,291 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:03:20,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 01:03:20,384 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-11-22 01:03:20,385 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:20,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-22 01:03:20,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:03:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 698 proven. 2795 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-22 01:03:20,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:03:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 698 proven. 2795 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-22 01:03:21,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049615234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:03:21,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:03:21,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 52 [2024-11-22 01:03:21,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494124700] [2024-11-22 01:03:21,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:03:21,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-22 01:03:21,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:21,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-22 01:03:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2024-11-22 01:03:21,580 INFO L87 Difference]: Start difference. First operand 153 states and 159 transitions. Second operand has 52 states, 52 states have (on average 3.076923076923077) internal successors, (160), 52 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:21,700 INFO L93 Difference]: Finished difference Result 201 states and 220 transitions. [2024-11-22 01:03:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-22 01:03:21,700 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.076923076923077) internal successors, (160), 52 states have internal predecessors, (160), 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 152 [2024-11-22 01:03:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:21,702 INFO L225 Difference]: With dead ends: 201 [2024-11-22 01:03:21,702 INFO L226 Difference]: Without dead ends: 178 [2024-11-22 01:03:21,703 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 260 SyntacticMatches, 38 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2024-11-22 01:03:21,703 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:21,703 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:03:21,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-22 01:03:21,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2024-11-22 01:03:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.0404624277456647) internal successors, (180), 173 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 180 transitions. [2024-11-22 01:03:21,714 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 180 transitions. Word has length 152 [2024-11-22 01:03:21,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:21,715 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 180 transitions. [2024-11-22 01:03:21,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.076923076923077) internal successors, (160), 52 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 180 transitions. [2024-11-22 01:03:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-22 01:03:21,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:21,717 INFO L215 NwaCegarLoop]: trace histogram [56, 55, 50, 6, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:21,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 01:03:21,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:21,921 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:21,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:21,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1272078235, now seen corresponding path program 6 times [2024-11-22 01:03:21,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:21,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652345363] [2024-11-22 01:03:21,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 01:03:21,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:21,954 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2024-11-22 01:03:21,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 1681 proven. 86 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2024-11-22 01:03:22,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:22,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652345363] [2024-11-22 01:03:22,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652345363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:03:22,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861612625] [2024-11-22 01:03:22,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 01:03:22,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:22,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:22,084 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:03:22,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 01:03:22,145 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 35 check-sat command(s) [2024-11-22 01:03:22,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:22,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-22 01:03:22,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:03:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 1681 proven. 86 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2024-11-22 01:03:22,190 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:03:22,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 1681 proven. 86 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2024-11-22 01:03:22,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861612625] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:03:22,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:03:22,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-11-22 01:03:22,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019913590] [2024-11-22 01:03:22,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:03:22,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 01:03:22,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:22,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 01:03:22,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:03:22,269 INFO L87 Difference]: Start difference. First operand 174 states and 180 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:22,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:22,298 INFO L93 Difference]: Finished difference Result 197 states and 209 transitions. [2024-11-22 01:03:22,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 01:03:22,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 173 [2024-11-22 01:03:22,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:22,300 INFO L225 Difference]: With dead ends: 197 [2024-11-22 01:03:22,300 INFO L226 Difference]: Without dead ends: 193 [2024-11-22 01:03:22,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 340 SyntacticMatches, 12 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-22 01:03:22,301 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:22,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 01:03:22,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-22 01:03:22,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 177. [2024-11-22 01:03:22,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.0454545454545454) internal successors, (184), 176 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:22,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 184 transitions. [2024-11-22 01:03:22,310 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 184 transitions. Word has length 173 [2024-11-22 01:03:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:22,311 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 184 transitions. [2024-11-22 01:03:22,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 184 transitions. [2024-11-22 01:03:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-22 01:03:22,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:22,312 INFO L215 NwaCegarLoop]: trace histogram [57, 56, 50, 7, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:22,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 01:03:22,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:22,513 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:22,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash -975458480, now seen corresponding path program 7 times [2024-11-22 01:03:22,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:22,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666488216] [2024-11-22 01:03:22,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 01:03:22,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:22,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4788 backedges. 1940 proven. 121 refuted. 0 times theorem prover too weak. 2727 trivial. 0 not checked. [2024-11-22 01:03:22,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:22,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666488216] [2024-11-22 01:03:22,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666488216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:03:22,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019150647] [2024-11-22 01:03:22,737 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 01:03:22,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:22,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:22,740 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:03:22,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 01:03:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 01:03:22,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-22 01:03:22,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:03:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4788 backedges. 4648 proven. 121 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-22 01:03:23,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:03:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4788 backedges. 4648 proven. 121 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-22 01:03:24,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019150647] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:03:24,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:03:24,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 53, 53] total 96 [2024-11-22 01:03:24,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179156831] [2024-11-22 01:03:24,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:03:24,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-22 01:03:24,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-22 01:03:24,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-22 01:03:24,830 INFO L87 Difference]: Start difference. First operand 177 states and 184 transitions. Second operand has 96 states, 96 states have (on average 3.1979166666666665) internal successors, (307), 96 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:25,339 INFO L93 Difference]: Finished difference Result 1149 states and 1507 transitions. [2024-11-22 01:03:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-22 01:03:25,342 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.1979166666666665) internal successors, (307), 96 states have internal predecessors, (307), 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 176 [2024-11-22 01:03:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:25,345 INFO L225 Difference]: With dead ends: 1149 [2024-11-22 01:03:25,345 INFO L226 Difference]: Without dead ends: 1145 [2024-11-22 01:03:25,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 259 SyntacticMatches, 14 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4951 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-22 01:03:25,347 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:25,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 274 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 01:03:25,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2024-11-22 01:03:25,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 309. [2024-11-22 01:03:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.1688311688311688) internal successors, (360), 308 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 360 transitions. [2024-11-22 01:03:25,375 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 360 transitions. Word has length 176 [2024-11-22 01:03:25,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:25,376 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 360 transitions. [2024-11-22 01:03:25,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.1979166666666665) internal successors, (307), 96 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 360 transitions. [2024-11-22 01:03:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-22 01:03:25,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:25,378 INFO L215 NwaCegarLoop]: trace histogram [101, 100, 51, 50, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:25,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 01:03:25,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:25,583 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:25,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash -338193904, now seen corresponding path program 8 times [2024-11-22 01:03:25,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:25,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596067499] [2024-11-22 01:03:25,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:03:25,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:25,657 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:03:25,657 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:29,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596067499] [2024-11-22 01:03:29,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596067499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:03:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466043203] [2024-11-22 01:03:29,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 01:03:29,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:29,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:29,653 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:03:29,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 01:03:29,754 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 01:03:29,754 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:29,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 205 conjuncts are in the unsatisfiable core [2024-11-22 01:03:29,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:03:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:32,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:03:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 01:03:32,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466043203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:03:32,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:03:32,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104, 104] total 155 [2024-11-22 01:03:32,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478623030] [2024-11-22 01:03:32,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:03:32,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2024-11-22 01:03:32,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:32,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2024-11-22 01:03:32,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2858, Invalid=21012, Unknown=0, NotChecked=0, Total=23870 [2024-11-22 01:03:32,513 INFO L87 Difference]: Start difference. First operand 309 states and 360 transitions. Second operand has 155 states, 155 states have (on average 2.967741935483871) internal successors, (460), 155 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:37,199 INFO L93 Difference]: Finished difference Result 4395 states and 5823 transitions. [2024-11-22 01:03:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-22 01:03:37,201 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 2.967741935483871) internal successors, (460), 155 states have internal predecessors, (460), 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 308 [2024-11-22 01:03:37,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:37,213 INFO L225 Difference]: With dead ends: 4395 [2024-11-22 01:03:37,213 INFO L226 Difference]: Without dead ends: 4235 [2024-11-22 01:03:37,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 565 SyntacticMatches, 1 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7702 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2858, Invalid=21012, Unknown=0, NotChecked=0, Total=23870 [2024-11-22 01:03:37,218 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 49 mSDsluCounter, 10286 mSDsCounter, 0 mSdLazyCounter, 17622 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 10441 SdHoareTripleChecker+Invalid, 17675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 17622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:37,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 10441 Invalid, 17675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 17622 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-22 01:03:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4235 states. [2024-11-22 01:03:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4235 to 4186. [2024-11-22 01:03:37,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 4185 states have (on average 1.0241338112305853) internal successors, (4286), 4185 states have internal predecessors, (4286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:37,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 4286 transitions. [2024-11-22 01:03:37,428 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 4286 transitions. Word has length 308 [2024-11-22 01:03:37,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:37,428 INFO L471 AbstractCegarLoop]: Abstraction has 4186 states and 4286 transitions. [2024-11-22 01:03:37,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 2.967741935483871) internal successors, (460), 155 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:37,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 4286 transitions. [2024-11-22 01:03:37,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-22 01:03:37,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 01:03:37,431 INFO L215 NwaCegarLoop]: trace histogram [102, 101, 52, 50, 1, 1, 1, 1, 1, 1] [2024-11-22 01:03:37,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 01:03:37,651 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,SelfDestructingSolverStorable10 [2024-11-22 01:03:37,652 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 01:03:37,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 01:03:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2103022405, now seen corresponding path program 9 times [2024-11-22 01:03:37,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 01:03:37,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467336988] [2024-11-22 01:03:37,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:03:37,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 01:03:37,743 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2024-11-22 01:03:37,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7403 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-22 01:03:39,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 01:03:39,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467336988] [2024-11-22 01:03:39,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467336988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 01:03:39,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713686103] [2024-11-22 01:03:39,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 01:03:39,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:39,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 01:03:39,948 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 01:03:39,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 01:03:40,099 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2024-11-22 01:03:40,100 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 01:03:40,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-22 01:03:40,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 01:03:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7401 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-22 01:03:40,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 01:03:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7401 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2024-11-22 01:03:42,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713686103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 01:03:42,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 01:03:42,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 55 [2024-11-22 01:03:42,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575441611] [2024-11-22 01:03:42,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 01:03:42,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-22 01:03:42,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 01:03:42,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-22 01:03:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2024-11-22 01:03:42,120 INFO L87 Difference]: Start difference. First operand 4186 states and 4286 transitions. Second operand has 55 states, 55 states have (on average 3.909090909090909) internal successors, (215), 55 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 01:03:42,311 INFO L93 Difference]: Finished difference Result 4337 states and 4437 transitions. [2024-11-22 01:03:42,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-22 01:03:42,313 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.909090909090909) internal successors, (215), 55 states have internal predecessors, (215), 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 311 [2024-11-22 01:03:42,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 01:03:42,315 INFO L225 Difference]: With dead ends: 4337 [2024-11-22 01:03:42,315 INFO L226 Difference]: Without dead ends: 0 [2024-11-22 01:03:42,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 569 SyntacticMatches, 102 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2024-11-22 01:03:42,320 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 01:03:42,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 01:03:42,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-22 01:03:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-22 01:03:42,321 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) [2024-11-22 01:03:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-22 01:03:42,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 311 [2024-11-22 01:03:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 01:03:42,322 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-22 01:03:42,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.909090909090909) internal successors, (215), 55 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 01:03:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-22 01:03:42,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-22 01:03:42,325 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-22 01:03:42,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 01:03:42,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 01:03:42,529 INFO L407 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1] [2024-11-22 01:03:42,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-22 01:03:44,051 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 01:03:44,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:03:44 BoogieIcfgContainer [2024-11-22 01:03:44,085 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 01:03:44,086 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 01:03:44,086 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 01:03:44,086 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 01:03:44,086 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:14" (3/4) ... [2024-11-22 01:03:44,088 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 01:03:44,093 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-22 01:03:44,094 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-22 01:03:44,094 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-22 01:03:44,094 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 01:03:44,162 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 01:03:44,163 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 01:03:44,163 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 01:03:44,164 INFO L158 Benchmark]: Toolchain (without parser) took 29911.46ms. Allocated memory was 180.4MB in the beginning and 654.3MB in the end (delta: 474.0MB). Free memory was 101.6MB in the beginning and 604.5MB in the end (delta: -502.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:03:44,164 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 180.4MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 01:03:44,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.89ms. Allocated memory is still 180.4MB. Free memory was 101.3MB in the beginning and 145.6MB in the end (delta: -44.3MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2024-11-22 01:03:44,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.56ms. Allocated memory is still 180.4MB. Free memory was 145.6MB in the beginning and 144.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:03:44,164 INFO L158 Benchmark]: Boogie Preprocessor took 25.88ms. Allocated memory is still 180.4MB. Free memory was 144.5MB in the beginning and 142.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 01:03:44,165 INFO L158 Benchmark]: RCFGBuilder took 231.65ms. Allocated memory is still 180.4MB. Free memory was 142.4MB in the beginning and 147.6MB in the end (delta: -5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-22 01:03:44,165 INFO L158 Benchmark]: TraceAbstraction took 29318.49ms. Allocated memory was 180.4MB in the beginning and 654.3MB in the end (delta: 474.0MB). Free memory was 146.5MB in the beginning and 608.6MB in the end (delta: -462.1MB). Peak memory consumption was 398.7MB. Max. memory is 16.1GB. [2024-11-22 01:03:44,165 INFO L158 Benchmark]: Witness Printer took 77.41ms. Allocated memory is still 654.3MB. Free memory was 608.6MB in the beginning and 604.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 01:03:44,166 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 180.4MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.89ms. Allocated memory is still 180.4MB. Free memory was 101.3MB in the beginning and 145.6MB in the end (delta: -44.3MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.56ms. Allocated memory is still 180.4MB. Free memory was 145.6MB in the beginning and 144.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.88ms. Allocated memory is still 180.4MB. Free memory was 144.5MB in the beginning and 142.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 231.65ms. Allocated memory is still 180.4MB. Free memory was 142.4MB in the beginning and 147.6MB in the end (delta: -5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 29318.49ms. Allocated memory was 180.4MB in the beginning and 654.3MB in the end (delta: 474.0MB). Free memory was 146.5MB in the beginning and 608.6MB in the end (delta: -462.1MB). Peak memory consumption was 398.7MB. Max. memory is 16.1GB. * Witness Printer took 77.41ms. Allocated memory is still 654.3MB. Free memory was 608.6MB in the beginning and 604.5MB 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.7s, OverallIterations: 12, TraceHistogramMax: 102, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 79 mSDsluCounter, 11113 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10810 mSDsCounter, 212 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18958 IncrementalHoareTripleChecker+Invalid, 19170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 212 mSolverCounterUnsat, 303 mSDtfsCounter, 18958 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2903 GetRequests, 2248 SyntacticMatches, 169 SemanticMatches, 486 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17684 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4186occurred in iteration=11, InterpolantAutomatonStates: 390, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 936 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 17.9s InterpolantComputationTime, 2560 NumberOfCodeBlocks, 2434 NumberOfCodeBlocksAsserted, 411 NumberOfCheckSat, 3799 ConstructedInterpolants, 0 QuantifiedInterpolants, 10178 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2943 ConjunctsInSsa, 469 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 55132/134046 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: 28]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((2 == y) && (98 == x)) || ((44 == y) && (44 == x))) || ((x == 15) && (y == 15))) || ((y == 39) && (x == 39))) || ((y == 33) && (x == 33))) || ((6 == y) && (6 == x))) || ((35 == y) && (x == 65))) || ((y == 10) && (x == 90))) || ((87 == x) && (y == 13))) || ((x == 1) && (y == 1))) || ((x == 63) && (y == 37))) || ((23 == y) && (23 == x))) || ((x == 86) && (14 == y))) || ((y == 28) && (x == 28))) || ((x == 24) && (y == 24))) || ((x == 13) && (y == 13))) || ((x == 26) && (y == 26))) || ((7 == y) && (7 == x))) || ((23 == y) && (77 == x))) || ((y == 12) && (88 == x))) || ((56 == x) && (44 == y))) || ((x == 25) && (y == 25))) || ((21 == y) && (21 == x))) || ((22 == y) && (x == 78))) || ((40 == y) && (40 == x))) || ((92 == x) && (y == 8))) || ((x == 8) && (y == 8))) || ((x == 34) && (y == 34))) || ((y == 26) && (x == 74))) || ((19 == x) && (19 == y))) || ((x == 36) && (y == 36))) || ((y == 43) && (57 == x))) || ((x == 54) && (46 == y))) || ((x == 11) && (y == 11))) || ((16 == x) && (16 == y))) || ((69 == x) && (31 == y))) || ((49 == x) && (49 == y))) || ((76 == x) && (y == 24))) || ((x == 73) && (y == 27))) || ((47 == y) && (47 == x))) || ((35 == y) && (35 == x))) || ((51 == x) && (49 == y))) || ((y == 18) && (82 == x))) || ((y == 10) && (x == 10))) || ((x == 96) && (y == 4))) || ((x == 58) && (42 == y))) || ((3 == y) && (97 == x))) || ((x == 37) && (y == 37))) || ((x == 75) && (y == 25))) || ((89 == x) && (y == 11))) || ((3 == x) && (3 == y))) || ((5 == x) && (5 == y))) || ((41 == y) && (59 == x))) || ((y == 17) && (x == 17))) || ((y == 28) && (72 == x))) || ((x == 70) && (30 == y))) || ((14 == y) && (14 == x))) || ((y == 39) && (x == 61))) || ((32 == y) && (32 == x))) || ((x == 60) && (40 == y))) || ((22 == y) && (22 == x))) || ((91 == x) && (9 == y))) || ((7 == y) && (x == 93))) || ((31 == x) && (31 == y))) || ((y == 27) && (x == 27))) || ((y == 0) && (x == 0))) || ((y == 12) && (x == 12))) || ((71 == x) && (29 == y))) || ((47 == y) && (53 == x))) || ((2 == x) && (2 == y))) || ((32 == y) && (68 == x))) || ((x == 83) && (y == 17))) || ((9 == x) && (9 == y))) || ((46 == y) && (46 == x))) || ((30 == x) && (30 == y))) || ((y == 34) && (66 == x))) || ((y == 48) && (52 == x))) || ((5 == y) && (95 == x))) || ((y == 20) && (x == 20))) || ((42 == y) && (42 == x))) || ((x == 18) && (y == 18))) || ((y == 45) && (x == 55))) || ((y == 38) && (62 == x))) || ((41 == y) && (41 == x))) || ((y == 20) && (x == 80))) || ((y == 43) && (x == 43))) || ((x == 79) && (21 == y))) || ((29 == x) && (29 == y))) || ((y == 4) && (x == 4))) || ((16 == y) && (84 == x))) || ((x == 85) && (y == 15))) || ((x == 99) && (y == 1))) || ((x == 100) && (y == 0))) || ((y == 50) && (x == 50))) || ((6 == y) && (94 == x))) || ((81 == x) && (19 == y))) || ((y == 45) && (x == 45))) || ((y == 48) && (x == 48))) || ((x == 38) && (y == 38))) || ((64 == x) && (y == 36))) || ((y == 33) && (67 == x))) RESULT: Ultimate proved your program to be correct! [2024-11-22 01:03:44,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE