./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_sentinel.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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/array-examples/standard_sentinel.i.v+cfa-reducer.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 6060f0df556deb332d160eff8a39bcf699b67887fb6a475da5cd3837f5257af8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 16:38:20,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 16:38:20,997 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 16:38:21,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 16:38:21,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 16:38:21,036 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 16:38:21,037 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 16:38:21,038 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 16:38:21,038 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 16:38:21,040 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 16:38:21,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 16:38:21,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 16:38:21,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 16:38:21,042 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 16:38:21,042 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 16:38:21,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 16:38:21,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 16:38:21,043 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 16:38:21,044 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 16:38:21,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 16:38:21,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 16:38:21,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 16:38:21,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 16:38:21,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 16:38:21,047 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 16:38:21,047 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 16:38:21,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 16:38:21,048 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 16:38:21,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 16:38:21,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 16:38:21,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 16:38:21,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 16:38:21,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:38:21,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 16:38:21,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 16:38:21,049 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 16:38:21,050 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 16:38:21,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 16:38:21,050 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 16:38:21,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 16:38:21,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 16:38:21,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 16:38:21,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6060f0df556deb332d160eff8a39bcf699b67887fb6a475da5cd3837f5257af8 [2024-11-19 16:38:21,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 16:38:21,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 16:38:21,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 16:38:21,337 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 16:38:21,338 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 16:38:21,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_sentinel.i.v+cfa-reducer.c [2024-11-19 16:38:22,813 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 16:38:23,008 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 16:38:23,010 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_sentinel.i.v+cfa-reducer.c [2024-11-19 16:38:23,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e25b3339/a95e7b95e04b47d18669bff7da543d22/FLAG168f0500a [2024-11-19 16:38:23,044 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e25b3339/a95e7b95e04b47d18669bff7da543d22 [2024-11-19 16:38:23,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 16:38:23,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 16:38:23,051 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 16:38:23,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 16:38:23,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 16:38:23,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,059 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215e582c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23, skipping insertion in model container [2024-11-19 16:38:23,060 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,084 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 16:38:23,289 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_sentinel.i.v+cfa-reducer.c[991,1004] [2024-11-19 16:38:23,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:38:23,304 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 16:38:23,324 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_sentinel.i.v+cfa-reducer.c[991,1004] [2024-11-19 16:38:23,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 16:38:23,345 INFO L204 MainTranslator]: Completed translation [2024-11-19 16:38:23,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23 WrapperNode [2024-11-19 16:38:23,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 16:38:23,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 16:38:23,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 16:38:23,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 16:38:23,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,381 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2024-11-19 16:38:23,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 16:38:23,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 16:38:23,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 16:38:23,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 16:38:23,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,437 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-19 16:38:23,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 16:38:23,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 16:38:23,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 16:38:23,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 16:38:23,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (1/1) ... [2024-11-19 16:38:23,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 16:38:23,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:38:23,507 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 16:38:23,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 16:38:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 16:38:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 16:38:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 16:38:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 16:38:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 16:38:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 16:38:23,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 16:38:23,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 16:38:23,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 16:38:23,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 16:38:23,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 16:38:23,614 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 16:38:23,616 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 16:38:23,775 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-19 16:38:23,775 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 16:38:23,788 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 16:38:23,789 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 16:38:23,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:38:23 BoogieIcfgContainer [2024-11-19 16:38:23,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 16:38:23,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 16:38:23,795 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 16:38:23,798 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 16:38:23,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:38:23" (1/3) ... [2024-11-19 16:38:23,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e96496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:38:23, skipping insertion in model container [2024-11-19 16:38:23,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:38:23" (2/3) ... [2024-11-19 16:38:23,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e96496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:38:23, skipping insertion in model container [2024-11-19 16:38:23,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:38:23" (3/3) ... [2024-11-19 16:38:23,802 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_sentinel.i.v+cfa-reducer.c [2024-11-19 16:38:23,820 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 16:38:23,821 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 16:38:23,887 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 16:38:23,893 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;@38aa237b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 16:38:23,894 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 16:38:23,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 16:38:23,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:38:23,904 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:38:23,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:38:23,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:38:23,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1820860020, now seen corresponding path program 1 times [2024-11-19 16:38:23,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:38:23,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940248842] [2024-11-19 16:38:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:38:23,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:38:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:38:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:38:24,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:38:24,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940248842] [2024-11-19 16:38:24,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940248842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:38:24,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:38:24,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 16:38:24,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829801161] [2024-11-19 16:38:24,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:38:24,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 16:38:24,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:38:24,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 16:38:24,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:38:24,178 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:24,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:38:24,200 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2024-11-19 16:38:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 16:38:24,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-19 16:38:24,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:38:24,209 INFO L225 Difference]: With dead ends: 28 [2024-11-19 16:38:24,210 INFO L226 Difference]: Without dead ends: 14 [2024-11-19 16:38:24,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 16:38:24,218 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:38:24,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 28 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:38:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-11-19 16:38:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2024-11-19 16:38:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-11-19 16:38:24,251 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2024-11-19 16:38:24,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:38:24,251 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-11-19 16:38:24,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-11-19 16:38:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 16:38:24,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:38:24,252 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:38:24,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 16:38:24,252 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:38:24,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:38:24,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1165662454, now seen corresponding path program 1 times [2024-11-19 16:38:24,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:38:24,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912950159] [2024-11-19 16:38:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:38:24,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:38:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:38:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:38:24,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:38:24,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912950159] [2024-11-19 16:38:24,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912950159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:38:24,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415271452] [2024-11-19 16:38:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:38:24,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:38:24,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:38:24,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:38:24,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 16:38:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:38:24,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 16:38:24,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:38:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:38:24,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:38:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 16:38:24,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415271452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:38:24,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:38:24,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-19 16:38:24,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558010324] [2024-11-19 16:38:24,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:38:24,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 16:38:24,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:38:24,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 16:38:24,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 16:38:24,544 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:24,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:38:24,580 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-11-19 16:38:24,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 16:38:24,580 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 16:38:24,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:38:24,581 INFO L225 Difference]: With dead ends: 27 [2024-11-19 16:38:24,581 INFO L226 Difference]: Without dead ends: 19 [2024-11-19 16:38:24,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 16:38:24,584 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:38:24,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 19 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:38:24,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-19 16:38:24,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-19 16:38:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-19 16:38:24,592 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 12 [2024-11-19 16:38:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:38:24,593 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-19 16:38:24,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-19 16:38:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 16:38:24,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:38:24,594 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:38:24,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 16:38:24,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:38:24,799 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:38:24,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:38:24,800 INFO L85 PathProgramCache]: Analyzing trace with hash -358681220, now seen corresponding path program 2 times [2024-11-19 16:38:24,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:38:24,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379191522] [2024-11-19 16:38:24,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:38:24,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:38:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:38:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 16:38:24,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:38:24,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379191522] [2024-11-19 16:38:24,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379191522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 16:38:24,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 16:38:24,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 16:38:24,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948093231] [2024-11-19 16:38:24,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 16:38:24,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 16:38:24,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:38:24,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 16:38:24,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 16:38:25,000 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:38:25,032 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2024-11-19 16:38:25,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 16:38:25,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-19 16:38:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:38:25,034 INFO L225 Difference]: With dead ends: 24 [2024-11-19 16:38:25,034 INFO L226 Difference]: Without dead ends: 21 [2024-11-19 16:38:25,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 16:38:25,036 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:38:25,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:38:25,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-19 16:38:25,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-19 16:38:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:25,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-19 16:38:25,042 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2024-11-19 16:38:25,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:38:25,043 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-19 16:38:25,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-19 16:38:25,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 16:38:25,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:38:25,044 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:38:25,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 16:38:25,045 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:38:25,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:38:25,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1097356929, now seen corresponding path program 1 times [2024-11-19 16:38:25,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:38:25,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573990923] [2024-11-19 16:38:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:38:25,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:38:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:38:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:38:25,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:38:25,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573990923] [2024-11-19 16:38:25,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573990923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:38:25,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238454030] [2024-11-19 16:38:25,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:38:25,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:38:25,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:38:25,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:38:25,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 16:38:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:38:25,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 16:38:25,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:38:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:38:25,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:38:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:38:25,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238454030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:38:25,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:38:25,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 16:38:25,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930850998] [2024-11-19 16:38:25,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:38:25,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 16:38:25,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:38:25,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 16:38:25,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 16:38:25,407 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:25,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:38:25,445 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-19 16:38:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 16:38:25,446 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-19 16:38:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:38:25,447 INFO L225 Difference]: With dead ends: 43 [2024-11-19 16:38:25,447 INFO L226 Difference]: Without dead ends: 33 [2024-11-19 16:38:25,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-19 16:38:25,448 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 16:38:25,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 16:38:25,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-19 16:38:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-19 16:38:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:25,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-19 16:38:25,454 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 20 [2024-11-19 16:38:25,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:38:25,454 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-19 16:38:25,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:25,454 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-19 16:38:25,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 16:38:25,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:38:25,455 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:38:25,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 16:38:25,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-19 16:38:25,657 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:38:25,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:38:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash -325117429, now seen corresponding path program 2 times [2024-11-19 16:38:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:38:25,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292093219] [2024-11-19 16:38:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:38:25,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:38:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:38:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:38:25,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:38:25,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292093219] [2024-11-19 16:38:25,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292093219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:38:25,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810089031] [2024-11-19 16:38:25,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 16:38:25,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:38:25,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:38:25,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:38:25,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 16:38:25,985 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 16:38:25,985 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:38:25,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 16:38:25,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:38:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:38:26,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:38:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:38:26,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810089031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:38:26,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:38:26,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-19 16:38:26,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902785004] [2024-11-19 16:38:26,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:38:26,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 16:38:26,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:38:26,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 16:38:26,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-19 16:38:26,312 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:26,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:38:26,385 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-11-19 16:38:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 16:38:26,386 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-19 16:38:26,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:38:26,388 INFO L225 Difference]: With dead ends: 67 [2024-11-19 16:38:26,388 INFO L226 Difference]: Without dead ends: 57 [2024-11-19 16:38:26,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-19 16:38:26,389 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:38:26,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:38:26,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-19 16:38:26,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-19 16:38:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-11-19 16:38:26,397 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 32 [2024-11-19 16:38:26,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:38:26,397 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-11-19 16:38:26,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-11-19 16:38:26,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 16:38:26,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:38:26,399 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:38:26,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 16:38:26,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:38:26,604 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:38:26,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:38:26,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1077435101, now seen corresponding path program 3 times [2024-11-19 16:38:26,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:38:26,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697293380] [2024-11-19 16:38:26,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:38:26,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:38:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:38:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 16:38:27,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:38:27,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697293380] [2024-11-19 16:38:27,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697293380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:38:27,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242171158] [2024-11-19 16:38:27,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 16:38:27,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:38:27,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:38:27,337 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:38:27,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 16:38:27,431 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 16:38:27,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:38:27,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 16:38:27,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:38:27,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 16:38:27,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 16:38:27,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-19 16:38:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-19 16:38:27,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:38:27,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-19 16:38:27,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2024-11-19 16:38:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-19 16:38:27,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242171158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:38:27,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:38:27,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 33 [2024-11-19 16:38:27,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659260320] [2024-11-19 16:38:27,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:38:27,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-19 16:38:27,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:38:27,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-19 16:38:27,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=730, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 16:38:27,822 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:28,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:38:28,057 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2024-11-19 16:38:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-19 16:38:28,058 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-19 16:38:28,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:38:28,059 INFO L225 Difference]: With dead ends: 75 [2024-11-19 16:38:28,059 INFO L226 Difference]: Without dead ends: 64 [2024-11-19 16:38:28,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=362, Invalid=970, Unknown=0, NotChecked=0, Total=1332 [2024-11-19 16:38:28,061 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:38:28,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 49 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:38:28,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-19 16:38:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2024-11-19 16:38:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-11-19 16:38:28,072 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 56 [2024-11-19 16:38:28,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:38:28,073 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-11-19 16:38:28,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 33 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-11-19 16:38:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-19 16:38:28,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:38:28,074 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:38:28,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 16:38:28,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:38:28,279 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:38:28,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:38:28,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1260190997, now seen corresponding path program 4 times [2024-11-19 16:38:28,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:38:28,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822486747] [2024-11-19 16:38:28,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:38:28,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:38:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:38:28,928 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 16:38:28,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:38:28,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822486747] [2024-11-19 16:38:28,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822486747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:38:28,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934207519] [2024-11-19 16:38:28,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 16:38:28,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:38:28,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:38:28,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:38:28,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 16:38:29,039 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 16:38:29,040 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:38:29,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 16:38:29,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:38:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 16:38:29,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:38:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 16:38:30,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934207519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:38:30,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:38:30,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-11-19 16:38:30,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928987782] [2024-11-19 16:38:30,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:38:30,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-19 16:38:30,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:38:30,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-19 16:38:30,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 16:38:30,005 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 51 states, 51 states have (on average 2.1176470588235294) internal successors, (108), 51 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:30,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:38:30,139 INFO L93 Difference]: Finished difference Result 127 states and 153 transitions. [2024-11-19 16:38:30,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-19 16:38:30,140 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.1176470588235294) internal successors, (108), 51 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-19 16:38:30,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:38:30,141 INFO L225 Difference]: With dead ends: 127 [2024-11-19 16:38:30,141 INFO L226 Difference]: Without dead ends: 113 [2024-11-19 16:38:30,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 16:38:30,142 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 16:38:30,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 16:38:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-19 16:38:30,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-19 16:38:30,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:30,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2024-11-19 16:38:30,159 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 62 [2024-11-19 16:38:30,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:38:30,160 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2024-11-19 16:38:30,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.1176470588235294) internal successors, (108), 51 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:38:30,160 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2024-11-19 16:38:30,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-19 16:38:30,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:38:30,161 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:38:30,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 16:38:30,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:38:30,366 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:38:30,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:38:30,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1302146717, now seen corresponding path program 5 times [2024-11-19 16:38:30,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:38:30,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992116287] [2024-11-19 16:38:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:38:30,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:38:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:38:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 16:38:32,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:38:32,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992116287] [2024-11-19 16:38:32,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992116287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:38:32,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647359212] [2024-11-19 16:38:32,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 16:38:32,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:38:32,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:38:32,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:38:32,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 16:39:11,975 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-11-19 16:39:11,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:39:12,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-19 16:39:12,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:39:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 16:39:12,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:39:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2316 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 16:39:14,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647359212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:39:14,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:39:14,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2024-11-19 16:39:14,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272627690] [2024-11-19 16:39:14,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:39:14,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-19 16:39:14,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:39:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-19 16:39:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-19 16:39:14,841 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 101 states, 101 states have (on average 2.0594059405940595) internal successors, (208), 101 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:39:15,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:39:15,212 INFO L93 Difference]: Finished difference Result 227 states and 278 transitions. [2024-11-19 16:39:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-19 16:39:15,213 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0594059405940595) internal successors, (208), 101 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-11-19 16:39:15,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:39:15,215 INFO L225 Difference]: With dead ends: 227 [2024-11-19 16:39:15,215 INFO L226 Difference]: Without dead ends: 213 [2024-11-19 16:39:15,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-19 16:39:15,225 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 16:39:15,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 16:39:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-19 16:39:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-11-19 16:39:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.009433962264151) internal successors, (214), 212 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:39:15,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2024-11-19 16:39:15,249 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 112 [2024-11-19 16:39:15,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:39:15,250 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2024-11-19 16:39:15,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.0594059405940595) internal successors, (208), 101 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:39:15,250 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2024-11-19 16:39:15,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-19 16:39:15,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:39:15,255 INFO L215 NwaCegarLoop]: trace histogram [98, 98, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:39:15,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 16:39:15,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:39:15,456 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:39:15,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:39:15,457 INFO L85 PathProgramCache]: Analyzing trace with hash 466908289, now seen corresponding path program 6 times [2024-11-19 16:39:15,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:39:15,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619611557] [2024-11-19 16:39:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:39:15,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:39:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:39:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 9616 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 16:39:21,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:39:21,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619611557] [2024-11-19 16:39:21,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619611557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:39:21,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270435599] [2024-11-19 16:39:21,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 16:39:21,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:39:21,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:39:21,234 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:39:21,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 16:39:21,420 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-19 16:39:21,420 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 16:39:21,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 16:39:21,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:39:21,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 16:39:22,083 INFO L349 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2024-11-19 16:39:22,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 55 [2024-11-19 16:39:22,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9616 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9604 trivial. 0 not checked. [2024-11-19 16:39:22,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:39:23,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 49 [2024-11-19 16:39:23,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 16:39:23,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 58 [2024-11-19 16:39:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9616 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9604 trivial. 0 not checked. [2024-11-19 16:39:23,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270435599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:39:23,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:39:23,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 11, 11] total 117 [2024-11-19 16:39:23,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372981242] [2024-11-19 16:39:23,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:39:23,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2024-11-19 16:39:23,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:39:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2024-11-19 16:39:23,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5134, Invalid=8438, Unknown=0, NotChecked=0, Total=13572 [2024-11-19 16:39:23,215 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand has 117 states, 117 states have (on average 1.982905982905983) internal successors, (232), 117 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:39:24,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:39:24,492 INFO L93 Difference]: Finished difference Result 239 states and 245 transitions. [2024-11-19 16:39:24,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-19 16:39:24,492 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 1.982905982905983) internal successors, (232), 117 states have internal predecessors, (232), 0 states have call successors, (0), 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 212 [2024-11-19 16:39:24,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:39:24,494 INFO L225 Difference]: With dead ends: 239 [2024-11-19 16:39:24,494 INFO L226 Difference]: Without dead ends: 224 [2024-11-19 16:39:24,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 406 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5249, Invalid=10251, Unknown=0, NotChecked=0, Total=15500 [2024-11-19 16:39:24,499 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 16:39:24,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 83 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 16:39:24,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-19 16:39:24,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223. [2024-11-19 16:39:24,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.009009009009009) internal successors, (224), 222 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:39:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2024-11-19 16:39:24,521 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 212 [2024-11-19 16:39:24,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:39:24,521 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2024-11-19 16:39:24,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 1.982905982905983) internal successors, (232), 117 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:39:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2024-11-19 16:39:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-19 16:39:24,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:39:24,532 INFO L215 NwaCegarLoop]: trace histogram [99, 99, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:39:24,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 16:39:24,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:39:24,733 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:39:24,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:39:24,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1433935601, now seen corresponding path program 7 times [2024-11-19 16:39:24,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:39:24,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700648839] [2024-11-19 16:39:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:39:24,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:39:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:39:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9857 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-19 16:39:30,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 16:39:30,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700648839] [2024-11-19 16:39:30,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700648839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 16:39:30,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788947772] [2024-11-19 16:39:30,333 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 16:39:30,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 16:39:30,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 16:39:30,336 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 16:39:30,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 16:39:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 16:39:30,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-19 16:39:30,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 16:39:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9857 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-19 16:39:30,870 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 16:39:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9857 backedges. 0 proven. 9801 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-19 16:39:40,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788947772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 16:39:40,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 16:39:40,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102, 102] total 203 [2024-11-19 16:39:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322436472] [2024-11-19 16:39:40,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 16:39:40,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-19 16:39:40,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 16:39:40,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-19 16:39:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2024-11-19 16:39:40,595 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 203 states, 203 states have (on average 2.0295566502463056) internal successors, (412), 203 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:39:41,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 16:39:41,569 INFO L93 Difference]: Finished difference Result 447 states and 549 transitions. [2024-11-19 16:39:41,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2024-11-19 16:39:41,570 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 2.0295566502463056) internal successors, (412), 203 states have internal predecessors, (412), 0 states have call successors, (0), 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 222 [2024-11-19 16:39:41,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 16:39:41,572 INFO L225 Difference]: With dead ends: 447 [2024-11-19 16:39:41,572 INFO L226 Difference]: Without dead ends: 425 [2024-11-19 16:39:41,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=20503, Invalid=20503, Unknown=0, NotChecked=0, Total=41006 [2024-11-19 16:39:41,576 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 16:39:41,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 16:39:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-19 16:39:41,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2024-11-19 16:39:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.0047169811320755) internal successors, (426), 424 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:39:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 426 transitions. [2024-11-19 16:39:41,596 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 426 transitions. Word has length 222 [2024-11-19 16:39:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 16:39:41,596 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 426 transitions. [2024-11-19 16:39:41,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 2.0295566502463056) internal successors, (412), 203 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 16:39:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 426 transitions. [2024-11-19 16:39:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2024-11-19 16:39:41,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 16:39:41,603 INFO L215 NwaCegarLoop]: trace histogram [200, 200, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 16:39:41,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 16:39:41,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 16:39:41,803 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 16:39:41,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 16:39:41,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1651388505, now seen corresponding path program 8 times [2024-11-19 16:39:41,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 16:39:41,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776576083] [2024-11-19 16:39:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 16:39:41,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 16:39:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat