./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d 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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label08.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83003e08d0b0727d8396cfdc2be95d1bd0956c017aa98740983eff57678f4a43 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 15:16:16,580 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 15:16:16,643 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 15:16:16,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 15:16:16,650 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 15:16:16,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 15:16:16,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 15:16:16,683 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 15:16:16,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 15:16:16,685 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 15:16:16,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 15:16:16,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 15:16:16,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 15:16:16,687 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 15:16:16,687 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 15:16:16,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 15:16:16,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 15:16:16,692 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 15:16:16,692 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 15:16:16,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 15:16:16,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 15:16:16,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 15:16:16,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 15:16:16,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 15:16:16,693 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 15:16:16,694 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 15:16:16,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 15:16:16,694 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 15:16:16,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 15:16:16,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 15:16:16,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 15:16:16,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 15:16:16,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:16:16,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 15:16:16,696 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 15:16:16,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 15:16:16,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 15:16:16,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 15:16:16,698 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 15:16:16,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 15:16:16,698 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 15:16:16,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 15:16:16,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83003e08d0b0727d8396cfdc2be95d1bd0956c017aa98740983eff57678f4a43 [2024-10-12 15:16:17,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 15:16:17,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 15:16:17,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 15:16:17,042 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 15:16:17,042 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 15:16:17,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label08.c [2024-10-12 15:16:18,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 15:16:18,782 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 15:16:18,786 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label08.c [2024-10-12 15:16:18,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b913e7a/8694e66d05034d749d865ac76ae5608f/FLAG6e0685306 [2024-10-12 15:16:18,824 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b913e7a/8694e66d05034d749d865ac76ae5608f [2024-10-12 15:16:18,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 15:16:18,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 15:16:18,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 15:16:18,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 15:16:18,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 15:16:18,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:16:18" (1/1) ... [2024-10-12 15:16:18,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce83d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:18, skipping insertion in model container [2024-10-12 15:16:18,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:16:18" (1/1) ... [2024-10-12 15:16:18,886 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 15:16:19,242 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label08.c[19283,19296] [2024-10-12 15:16:19,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:16:19,281 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 15:16:19,343 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem02_label08.c[19283,19296] [2024-10-12 15:16:19,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:16:19,374 INFO L204 MainTranslator]: Completed translation [2024-10-12 15:16:19,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19 WrapperNode [2024-10-12 15:16:19,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 15:16:19,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 15:16:19,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 15:16:19,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 15:16:19,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,409 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,469 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 669 [2024-10-12 15:16:19,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 15:16:19,473 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 15:16:19,473 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 15:16:19,473 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 15:16:19,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,496 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,532 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]. [2024-10-12 15:16:19,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,572 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 15:16:19,585 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 15:16:19,585 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 15:16:19,585 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 15:16:19,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (1/1) ... [2024-10-12 15:16:19,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:16:19,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:16:19,621 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) [2024-10-12 15:16:19,624 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 [2024-10-12 15:16:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 15:16:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 15:16:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 15:16:19,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 15:16:19,747 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 15:16:19,749 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 15:16:20,676 INFO L? ?]: Removed 84 outVars from TransFormulas that were not future-live. [2024-10-12 15:16:20,677 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 15:16:20,758 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 15:16:20,758 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 15:16:20,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:16:20 BoogieIcfgContainer [2024-10-12 15:16:20,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 15:16:20,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 15:16:20,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 15:16:20,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 15:16:20,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:16:18" (1/3) ... [2024-10-12 15:16:20,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1253fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:16:20, skipping insertion in model container [2024-10-12 15:16:20,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:16:19" (2/3) ... [2024-10-12 15:16:20,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1253fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:16:20, skipping insertion in model container [2024-10-12 15:16:20,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:16:20" (3/3) ... [2024-10-12 15:16:20,770 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label08.c [2024-10-12 15:16:20,786 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 15:16:20,786 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 15:16:20,853 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 15:16:20,862 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;@6c97fa34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 15:16:20,862 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 15:16:20,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 163 states have (on average 1.9202453987730062) internal successors, (313), 164 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-12 15:16:20,889 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:20,891 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:20,892 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:20,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1403858413, now seen corresponding path program 1 times [2024-10-12 15:16:20,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:20,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438529056] [2024-10-12 15:16:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:20,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:21,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:21,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:21,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438529056] [2024-10-12 15:16:21,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438529056] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:21,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:21,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:21,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239378217] [2024-10-12 15:16:21,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:21,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 15:16:21,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:21,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 15:16:21,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:16:21,332 INFO L87 Difference]: Start difference. First operand has 165 states, 163 states have (on average 1.9202453987730062) internal successors, (313), 164 states have internal predecessors, (313), 0 states have call successors, (0), 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 60.5) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:21,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:21,379 INFO L93 Difference]: Finished difference Result 329 states and 625 transitions. [2024-10-12 15:16:21,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 15:16:21,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 60.5) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-10-12 15:16:21,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:21,395 INFO L225 Difference]: With dead ends: 329 [2024-10-12 15:16:21,395 INFO L226 Difference]: Without dead ends: 163 [2024-10-12 15:16:21,398 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 [2024-10-12 15:16:21,401 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:21,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 248 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:16:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-10-12 15:16:21,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2024-10-12 15:16:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5308641975308641) internal successors, (248), 162 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2024-10-12 15:16:21,441 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 121 [2024-10-12 15:16:21,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:21,442 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2024-10-12 15:16:21,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.5) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:21,443 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2024-10-12 15:16:21,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-12 15:16:21,446 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:21,446 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:21,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 15:16:21,447 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:21,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:21,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1389803866, now seen corresponding path program 1 times [2024-10-12 15:16:21,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:21,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291273038] [2024-10-12 15:16:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:21,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:21,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:21,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291273038] [2024-10-12 15:16:21,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291273038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:21,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:21,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:21,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730717355] [2024-10-12 15:16:21,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:21,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:21,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:21,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:21,765 INFO L87 Difference]: Start difference. First operand 163 states and 248 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:22,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:22,386 INFO L93 Difference]: Finished difference Result 466 states and 712 transitions. [2024-10-12 15:16:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2024-10-12 15:16:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:22,389 INFO L225 Difference]: With dead ends: 466 [2024-10-12 15:16:22,389 INFO L226 Difference]: Without dead ends: 304 [2024-10-12 15:16:22,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:22,395 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 98 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:22,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 42 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:16:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-10-12 15:16:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-10-12 15:16:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.528052805280528) internal successors, (463), 303 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:22,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 463 transitions. [2024-10-12 15:16:22,423 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 463 transitions. Word has length 121 [2024-10-12 15:16:22,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:22,424 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 463 transitions. [2024-10-12 15:16:22,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:22,424 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 463 transitions. [2024-10-12 15:16:22,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-10-12 15:16:22,427 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:22,427 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:22,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 15:16:22,427 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:22,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1311844656, now seen corresponding path program 1 times [2024-10-12 15:16:22,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:22,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883248770] [2024-10-12 15:16:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:22,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:22,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:22,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883248770] [2024-10-12 15:16:22,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883248770] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:22,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:22,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:22,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460657780] [2024-10-12 15:16:22,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:22,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:22,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:22,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:22,667 INFO L87 Difference]: Start difference. First operand 304 states and 463 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:23,139 INFO L93 Difference]: Finished difference Result 899 states and 1373 transitions. [2024-10-12 15:16:23,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:23,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2024-10-12 15:16:23,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:23,143 INFO L225 Difference]: With dead ends: 899 [2024-10-12 15:16:23,144 INFO L226 Difference]: Without dead ends: 596 [2024-10-12 15:16:23,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:23,147 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 191 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:23,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 70 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:16:23,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-10-12 15:16:23,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 455. [2024-10-12 15:16:23,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.4911894273127753) internal successors, (677), 454 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 677 transitions. [2024-10-12 15:16:23,167 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 677 transitions. Word has length 132 [2024-10-12 15:16:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:23,168 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 677 transitions. [2024-10-12 15:16:23,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,168 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 677 transitions. [2024-10-12 15:16:23,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-12 15:16:23,171 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:23,171 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:23,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 15:16:23,172 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:23,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1382156583, now seen corresponding path program 1 times [2024-10-12 15:16:23,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:23,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247015168] [2024-10-12 15:16:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:23,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:23,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:23,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247015168] [2024-10-12 15:16:23,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247015168] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:23,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:23,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:23,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533303332] [2024-10-12 15:16:23,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:23,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:23,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:23,329 INFO L87 Difference]: Start difference. First operand 455 states and 677 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:23,759 INFO L93 Difference]: Finished difference Result 1351 states and 2015 transitions. [2024-10-12 15:16:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:23,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2024-10-12 15:16:23,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:23,767 INFO L225 Difference]: With dead ends: 1351 [2024-10-12 15:16:23,767 INFO L226 Difference]: Without dead ends: 897 [2024-10-12 15:16:23,768 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:23,769 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 158 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:23,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 121 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:23,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2024-10-12 15:16:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 888. [2024-10-12 15:16:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 887 states have (on average 1.4396843291995491) internal successors, (1277), 887 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1277 transitions. [2024-10-12 15:16:23,806 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1277 transitions. Word has length 139 [2024-10-12 15:16:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:23,807 INFO L471 AbstractCegarLoop]: Abstraction has 888 states and 1277 transitions. [2024-10-12 15:16:23,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:23,807 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1277 transitions. [2024-10-12 15:16:23,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-12 15:16:23,811 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:23,812 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:23,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 15:16:23,813 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:23,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:23,813 INFO L85 PathProgramCache]: Analyzing trace with hash -673692782, now seen corresponding path program 1 times [2024-10-12 15:16:23,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:23,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57062913] [2024-10-12 15:16:23,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:23,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-12 15:16:24,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:24,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57062913] [2024-10-12 15:16:24,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57062913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:24,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:24,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:24,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963599719] [2024-10-12 15:16:24,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:24,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:24,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:24,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:24,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:24,061 INFO L87 Difference]: Start difference. First operand 888 states and 1277 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:24,529 INFO L93 Difference]: Finished difference Result 2200 states and 3178 transitions. [2024-10-12 15:16:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:24,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 143 [2024-10-12 15:16:24,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:24,535 INFO L225 Difference]: With dead ends: 2200 [2024-10-12 15:16:24,535 INFO L226 Difference]: Without dead ends: 1313 [2024-10-12 15:16:24,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:24,540 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 143 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:24,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 120 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:24,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2024-10-12 15:16:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1171. [2024-10-12 15:16:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 1.3547008547008548) internal successors, (1585), 1170 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1585 transitions. [2024-10-12 15:16:24,566 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1585 transitions. Word has length 143 [2024-10-12 15:16:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:24,567 INFO L471 AbstractCegarLoop]: Abstraction has 1171 states and 1585 transitions. [2024-10-12 15:16:24,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:24,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1585 transitions. [2024-10-12 15:16:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-12 15:16:24,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:24,570 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:24,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 15:16:24,571 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:24,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash 781541195, now seen corresponding path program 1 times [2024-10-12 15:16:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:24,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614861150] [2024-10-12 15:16:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-12 15:16:24,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:24,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614861150] [2024-10-12 15:16:24,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614861150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:24,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:24,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:24,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224074186] [2024-10-12 15:16:24,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:24,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:24,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:24,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:24,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:24,778 INFO L87 Difference]: Start difference. First operand 1171 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:25,264 INFO L93 Difference]: Finished difference Result 3188 states and 4395 transitions. [2024-10-12 15:16:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:25,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 148 [2024-10-12 15:16:25,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:25,273 INFO L225 Difference]: With dead ends: 3188 [2024-10-12 15:16:25,273 INFO L226 Difference]: Without dead ends: 2018 [2024-10-12 15:16:25,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:25,276 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 146 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:25,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 246 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2024-10-12 15:16:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2013. [2024-10-12 15:16:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 2012 states have (on average 1.2519880715705765) internal successors, (2519), 2012 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2519 transitions. [2024-10-12 15:16:25,313 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2519 transitions. Word has length 148 [2024-10-12 15:16:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:25,313 INFO L471 AbstractCegarLoop]: Abstraction has 2013 states and 2519 transitions. [2024-10-12 15:16:25,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2519 transitions. [2024-10-12 15:16:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-12 15:16:25,317 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:25,318 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:25,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 15:16:25,318 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:25,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1525795242, now seen corresponding path program 1 times [2024-10-12 15:16:25,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:25,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109050497] [2024-10-12 15:16:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:25,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:16:25,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:25,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109050497] [2024-10-12 15:16:25,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109050497] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:16:25,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41250985] [2024-10-12 15:16:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:25,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:16:25,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:16:25,656 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) [2024-10-12 15:16:25,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 15:16:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:25,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:16:25,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:16:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-12 15:16:25,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:16:25,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41250985] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:25,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:16:25,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-12 15:16:25,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869586022] [2024-10-12 15:16:25,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:25,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:25,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:25,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:25,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:16:25,985 INFO L87 Difference]: Start difference. First operand 2013 states and 2519 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:26,451 INFO L93 Difference]: Finished difference Result 5010 states and 6235 transitions. [2024-10-12 15:16:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:26,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 148 [2024-10-12 15:16:26,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:26,464 INFO L225 Difference]: With dead ends: 5010 [2024-10-12 15:16:26,464 INFO L226 Difference]: Without dead ends: 2998 [2024-10-12 15:16:26,468 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:16:26,469 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 49 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:26,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 84 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:26,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2024-10-12 15:16:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2293. [2024-10-12 15:16:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 2292 states have (on average 1.2159685863874345) internal successors, (2787), 2292 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 2787 transitions. [2024-10-12 15:16:26,514 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 2787 transitions. Word has length 148 [2024-10-12 15:16:26,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:26,515 INFO L471 AbstractCegarLoop]: Abstraction has 2293 states and 2787 transitions. [2024-10-12 15:16:26,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 2787 transitions. [2024-10-12 15:16:26,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-10-12 15:16:26,520 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:26,520 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:26,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 15:16:26,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:16:26,722 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:26,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:26,722 INFO L85 PathProgramCache]: Analyzing trace with hash 494715296, now seen corresponding path program 1 times [2024-10-12 15:16:26,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:26,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419019498] [2024-10-12 15:16:26,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:26,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-12 15:16:26,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:26,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419019498] [2024-10-12 15:16:26,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419019498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:26,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:26,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:26,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476850543] [2024-10-12 15:16:26,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:26,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:26,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:26,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:26,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:26,806 INFO L87 Difference]: Start difference. First operand 2293 states and 2787 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:27,276 INFO L93 Difference]: Finished difference Result 5564 states and 6797 transitions. [2024-10-12 15:16:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:27,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2024-10-12 15:16:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:27,286 INFO L225 Difference]: With dead ends: 5564 [2024-10-12 15:16:27,286 INFO L226 Difference]: Without dead ends: 3272 [2024-10-12 15:16:27,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:27,290 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 190 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:27,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 73 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:27,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2024-10-12 15:16:27,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3272. [2024-10-12 15:16:27,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3271 states have (on average 1.1678385814735555) internal successors, (3820), 3271 states have internal predecessors, (3820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:27,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 3820 transitions. [2024-10-12 15:16:27,342 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 3820 transitions. Word has length 204 [2024-10-12 15:16:27,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:27,342 INFO L471 AbstractCegarLoop]: Abstraction has 3272 states and 3820 transitions. [2024-10-12 15:16:27,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:27,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 3820 transitions. [2024-10-12 15:16:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-10-12 15:16:27,348 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:27,348 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:27,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 15:16:27,348 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:27,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1164442622, now seen corresponding path program 1 times [2024-10-12 15:16:27,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:27,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384395161] [2024-10-12 15:16:27,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:27,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-12 15:16:27,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:27,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384395161] [2024-10-12 15:16:27,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384395161] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:27,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:27,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:27,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547707250] [2024-10-12 15:16:27,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:27,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:27,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:27,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:27,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:27,557 INFO L87 Difference]: Start difference. First operand 3272 states and 3820 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:28,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:28,045 INFO L93 Difference]: Finished difference Result 6545 states and 7641 transitions. [2024-10-12 15:16:28,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:28,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2024-10-12 15:16:28,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:28,057 INFO L225 Difference]: With dead ends: 6545 [2024-10-12 15:16:28,058 INFO L226 Difference]: Without dead ends: 3274 [2024-10-12 15:16:28,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:28,064 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 146 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:28,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 258 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2024-10-12 15:16:28,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3272. [2024-10-12 15:16:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3271 states have (on average 1.1372668908590644) internal successors, (3720), 3271 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:28,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 3720 transitions. [2024-10-12 15:16:28,122 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 3720 transitions. Word has length 207 [2024-10-12 15:16:28,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:28,123 INFO L471 AbstractCegarLoop]: Abstraction has 3272 states and 3720 transitions. [2024-10-12 15:16:28,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 3720 transitions. [2024-10-12 15:16:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-10-12 15:16:28,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:28,130 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:28,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 15:16:28,130 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:28,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:28,131 INFO L85 PathProgramCache]: Analyzing trace with hash -130699781, now seen corresponding path program 1 times [2024-10-12 15:16:28,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:28,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728177532] [2024-10-12 15:16:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:28,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-10-12 15:16:28,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:28,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728177532] [2024-10-12 15:16:28,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728177532] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:28,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:28,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:16:28,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345897302] [2024-10-12 15:16:28,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:28,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:28,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:28,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:28,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:28,227 INFO L87 Difference]: Start difference. First operand 3272 states and 3720 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:28,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:28,664 INFO L93 Difference]: Finished difference Result 6122 states and 7004 transitions. [2024-10-12 15:16:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:28,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2024-10-12 15:16:28,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:28,673 INFO L225 Difference]: With dead ends: 6122 [2024-10-12 15:16:28,673 INFO L226 Difference]: Without dead ends: 2851 [2024-10-12 15:16:28,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:28,676 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 142 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:28,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 252 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:16:28,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2024-10-12 15:16:28,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2843. [2024-10-12 15:16:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2843 states, 2842 states have (on average 1.1242083040112596) internal successors, (3195), 2842 states have internal predecessors, (3195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:28,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 3195 transitions. [2024-10-12 15:16:28,719 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 3195 transitions. Word has length 227 [2024-10-12 15:16:28,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:28,719 INFO L471 AbstractCegarLoop]: Abstraction has 2843 states and 3195 transitions. [2024-10-12 15:16:28,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:28,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 3195 transitions. [2024-10-12 15:16:28,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-12 15:16:28,725 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:16:28,726 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:28,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 15:16:28,726 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:16:28,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:16:28,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2083881878, now seen corresponding path program 1 times [2024-10-12 15:16:28,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:16:28,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734260615] [2024-10-12 15:16:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:16:28,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:16:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:16:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-10-12 15:16:28,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:16:28,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734260615] [2024-10-12 15:16:28,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734260615] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:16:28,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:16:28,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:16:28,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223150093] [2024-10-12 15:16:28,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:16:28,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:16:28,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:16:28,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:16:28,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:28,865 INFO L87 Difference]: Start difference. First operand 2843 states and 3195 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:16:29,049 INFO L93 Difference]: Finished difference Result 4966 states and 5633 transitions. [2024-10-12 15:16:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:16:29,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2024-10-12 15:16:29,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:16:29,050 INFO L225 Difference]: With dead ends: 4966 [2024-10-12 15:16:29,050 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 15:16:29,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:16:29,055 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 171 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-12 15:16:29,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 17 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-12 15:16:29,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 15:16:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 15:16:29,057 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) [2024-10-12 15:16:29,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 15:16:29,057 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 253 [2024-10-12 15:16:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:16:29,057 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 15:16:29,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:16:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 15:16:29,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 15:16:29,060 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 15:16:29,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 15:16:29,064 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:16:29,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 15:16:29,233 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 15:16:29,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:16:29 BoogieIcfgContainer [2024-10-12 15:16:29,250 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 15:16:29,250 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 15:16:29,251 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 15:16:29,251 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 15:16:29,251 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:16:20" (3/4) ... [2024-10-12 15:16:29,253 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 15:16:29,266 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-12 15:16:29,267 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-12 15:16:29,268 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 15:16:29,269 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 15:16:29,418 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 15:16:29,418 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 15:16:29,418 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 15:16:29,419 INFO L158 Benchmark]: Toolchain (without parser) took 10592.05ms. Allocated memory was 155.2MB in the beginning and 285.2MB in the end (delta: 130.0MB). Free memory was 115.2MB in the beginning and 83.8MB in the end (delta: 31.4MB). Peak memory consumption was 159.8MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,421 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 15:16:29,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 547.87ms. Allocated memory is still 155.2MB. Free memory was 114.7MB in the beginning and 86.7MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.23ms. Allocated memory is still 155.2MB. Free memory was 86.7MB in the beginning and 81.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,431 INFO L158 Benchmark]: Boogie Preprocessor took 110.44ms. Allocated memory is still 155.2MB. Free memory was 81.1MB in the beginning and 75.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,432 INFO L158 Benchmark]: RCFGBuilder took 1174.85ms. Allocated memory is still 155.2MB. Free memory was 75.9MB in the beginning and 119.5MB in the end (delta: -43.6MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,432 INFO L158 Benchmark]: TraceAbstraction took 8487.54ms. Allocated memory was 155.2MB in the beginning and 285.2MB in the end (delta: 130.0MB). Free memory was 119.5MB in the beginning and 95.3MB in the end (delta: 24.2MB). Peak memory consumption was 154.2MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,432 INFO L158 Benchmark]: Witness Printer took 167.84ms. Allocated memory is still 285.2MB. Free memory was 95.3MB in the beginning and 83.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-12 15:16:29,434 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 547.87ms. Allocated memory is still 155.2MB. Free memory was 114.7MB in the beginning and 86.7MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.23ms. Allocated memory is still 155.2MB. Free memory was 86.7MB in the beginning and 81.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 110.44ms. Allocated memory is still 155.2MB. Free memory was 81.1MB in the beginning and 75.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1174.85ms. Allocated memory is still 155.2MB. Free memory was 75.9MB in the beginning and 119.5MB in the end (delta: -43.6MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8487.54ms. Allocated memory was 155.2MB in the beginning and 285.2MB in the end (delta: 130.0MB). Free memory was 119.5MB in the beginning and 95.3MB in the end (delta: 24.2MB). Peak memory consumption was 154.2MB. Max. memory is 16.1GB. * Witness Printer took 167.84ms. Allocated memory is still 285.2MB. Free memory was 95.3MB in the beginning and 83.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. 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: 548]: 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, 165 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1434 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1434 mSDsluCounter, 1531 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 149 mSDsCounter, 631 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3529 IncrementalHoareTripleChecker+Invalid, 4160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 631 mSolverCounterUnsat, 1382 mSDtfsCounter, 3529 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3272occurred in iteration=8, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 1012 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1991 NumberOfCodeBlocks, 1991 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1979 ConstructedInterpolants, 0 QuantifiedInterpolants, 4531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 274 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 688/704 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: 616]: Loop Invariant Derived loop invariant: (((((((a17 == 8) && (a28 == 10)) || (((a17 == 8) && (a25 == 1)) && (a19 == 1))) || (((a25 == 1) && (a17 <= 8)) && (a28 <= 10))) || ((((a28 == 10) && (a11 == 0)) && (a17 <= 8)) && (a19 == 1))) || (((a17 <= 8) && (a28 <= 10)) && (a25 == 0))) || ((((a25 == 1) && (a11 == 0)) && (a17 <= 8)) && (a19 == 1))) RESULT: Ultimate proved your program to be correct! [2024-10-12 15:16:29,462 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