./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label39.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label39.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 e51d0f9be42091dddfe189cc9c123d5edcf142be4fec1d914e1bef518aa4756e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 15:15:44,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 15:15:44,131 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 15:15:44,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 15:15:44,142 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 15:15:44,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 15:15:44,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 15:15:44,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 15:15:44,165 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 15:15:44,168 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 15:15:44,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 15:15:44,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 15:15:44,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 15:15:44,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 15:15:44,169 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 15:15:44,169 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 15:15:44,169 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 15:15:44,170 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 15:15:44,170 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 15:15:44,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 15:15:44,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 15:15:44,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 15:15:44,172 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 15:15:44,172 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 15:15:44,173 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 15:15:44,173 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 15:15:44,173 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 15:15:44,173 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 15:15:44,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 15:15:44,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 15:15:44,174 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 15:15:44,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 15:15:44,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:15:44,175 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 15:15:44,175 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 15:15:44,175 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 15:15:44,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 15:15:44,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 15:15:44,176 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 15:15:44,176 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 15:15:44,177 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 15:15:44,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 15:15:44,177 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e51d0f9be42091dddfe189cc9c123d5edcf142be4fec1d914e1bef518aa4756e [2024-10-12 15:15:44,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 15:15:44,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 15:15:44,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 15:15:44,393 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 15:15:44,393 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 15:15:44,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label39.c [2024-10-12 15:15:45,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 15:15:45,907 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 15:15:45,907 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label39.c [2024-10-12 15:15:45,919 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dfe92f1b/2685ddf9837443a0984e6a4b4145ecf6/FLAG88ee5d680 [2024-10-12 15:15:45,932 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dfe92f1b/2685ddf9837443a0984e6a4b4145ecf6 [2024-10-12 15:15:45,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 15:15:45,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 15:15:45,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 15:15:45,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 15:15:45,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 15:15:45,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:15:45" (1/1) ... [2024-10-12 15:15:45,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c1e422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:45, skipping insertion in model container [2024-10-12 15:15:45,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:15:45" (1/1) ... [2024-10-12 15:15:45,977 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 15:15:46,216 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label39.c[21959,21972] [2024-10-12 15:15:46,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:15:46,241 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 15:15:46,378 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label39.c[21959,21972] [2024-10-12 15:15:46,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 15:15:46,406 INFO L204 MainTranslator]: Completed translation [2024-10-12 15:15:46,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46 WrapperNode [2024-10-12 15:15:46,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 15:15:46,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 15:15:46,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 15:15:46,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 15:15:46,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,487 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 658 [2024-10-12 15:15:46,488 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 15:15:46,489 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 15:15:46,489 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 15:15:46,489 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 15:15:46,498 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,504 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,526 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-12 15:15:46,526 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 15:15:46,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 15:15:46,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 15:15:46,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 15:15:46,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (1/1) ... [2024-10-12 15:15:46,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 15:15:46,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:15:46,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 15:15:46,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 15:15:46,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 15:15:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 15:15:46,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 15:15:46,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 15:15:46,704 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 15:15:46,705 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 15:15:47,443 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-10-12 15:15:47,444 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 15:15:47,493 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 15:15:47,497 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 15:15:47,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:15:47 BoogieIcfgContainer [2024-10-12 15:15:47,498 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 15:15:47,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 15:15:47,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 15:15:47,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 15:15:47,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:15:45" (1/3) ... [2024-10-12 15:15:47,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567e61d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:15:47, skipping insertion in model container [2024-10-12 15:15:47,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:15:46" (2/3) ... [2024-10-12 15:15:47,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567e61d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:15:47, skipping insertion in model container [2024-10-12 15:15:47,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:15:47" (3/3) ... [2024-10-12 15:15:47,508 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2024-10-12 15:15:47,536 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 15:15:47,536 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 15:15:47,589 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 15:15:47,593 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;@264be6a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 15:15:47,594 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 15:15:47,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 134 states have (on average 1.9776119402985075) internal successors, (265), 135 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:47,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-12 15:15:47,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:15:47,605 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:15:47,605 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:15:47,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:15:47,609 INFO L85 PathProgramCache]: Analyzing trace with hash -659890700, now seen corresponding path program 1 times [2024-10-12 15:15:47,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:15:47,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802374705] [2024-10-12 15:15:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:15:47,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:15:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:15:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:15:47,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:15:47,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802374705] [2024-10-12 15:15:47,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802374705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:15:47,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:15:47,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:15:47,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190751509] [2024-10-12 15:15:47,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:15:47,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-12 15:15:47,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:15:47,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-12 15:15:47,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:15:47,957 INFO L87 Difference]: Start difference. First operand has 136 states, 134 states have (on average 1.9776119402985075) internal successors, (265), 135 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:15:47,990 INFO L93 Difference]: Finished difference Result 271 states and 529 transitions. [2024-10-12 15:15:47,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-12 15:15:47,992 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-10-12 15:15:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:15:48,001 INFO L225 Difference]: With dead ends: 271 [2024-10-12 15:15:48,002 INFO L226 Difference]: Without dead ends: 134 [2024-10-12 15:15:48,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-12 15:15:48,009 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 15:15:48,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 15:15:48,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-10-12 15:15:48,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-10-12 15:15:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.5037593984962405) internal successors, (200), 133 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:48,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 200 transitions. [2024-10-12 15:15:48,041 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 200 transitions. Word has length 131 [2024-10-12 15:15:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:15:48,042 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 200 transitions. [2024-10-12 15:15:48,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:48,042 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 200 transitions. [2024-10-12 15:15:48,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-10-12 15:15:48,045 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:15:48,045 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:15:48,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 15:15:48,046 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:15:48,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:15:48,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2139952415, now seen corresponding path program 1 times [2024-10-12 15:15:48,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:15:48,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302939199] [2024-10-12 15:15:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:15:48,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:15:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:15:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:15:49,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:15:49,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302939199] [2024-10-12 15:15:49,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302939199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:15:49,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:15:49,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 15:15:49,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458563030] [2024-10-12 15:15:49,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:15:49,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 15:15:49,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:15:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 15:15:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:15:49,010 INFO L87 Difference]: Start difference. First operand 134 states and 200 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:49,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:15:49,683 INFO L93 Difference]: Finished difference Result 529 states and 795 transitions. [2024-10-12 15:15:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:15:49,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-10-12 15:15:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:15:49,686 INFO L225 Difference]: With dead ends: 529 [2024-10-12 15:15:49,686 INFO L226 Difference]: Without dead ends: 396 [2024-10-12 15:15:49,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-12 15:15:49,688 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 290 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-12 15:15:49,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 40 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-12 15:15:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-10-12 15:15:49,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2024-10-12 15:15:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.3063291139240507) internal successors, (516), 395 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 516 transitions. [2024-10-12 15:15:49,704 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 516 transitions. Word has length 131 [2024-10-12 15:15:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:15:49,705 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 516 transitions. [2024-10-12 15:15:49,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 516 transitions. [2024-10-12 15:15:49,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-10-12 15:15:49,707 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:15:49,707 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:15:49,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 15:15:49,708 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:15:49,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:15:49,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1067276174, now seen corresponding path program 1 times [2024-10-12 15:15:49,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:15:49,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494014886] [2024-10-12 15:15:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:15:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:15:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:15:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:15:50,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:15:50,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494014886] [2024-10-12 15:15:50,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494014886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:15:50,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:15:50,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:15:50,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839925741] [2024-10-12 15:15:50,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:15:50,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:15:50,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:15:50,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:15:50,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:15:50,046 INFO L87 Difference]: Start difference. First operand 396 states and 516 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:50,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:15:50,551 INFO L93 Difference]: Finished difference Result 1017 states and 1432 transitions. [2024-10-12 15:15:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:15:50,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-10-12 15:15:50,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:15:50,554 INFO L225 Difference]: With dead ends: 1017 [2024-10-12 15:15:50,554 INFO L226 Difference]: Without dead ends: 658 [2024-10-12 15:15:50,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:15:50,556 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 128 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:15:50,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 78 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:15:50,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-10-12 15:15:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 396. [2024-10-12 15:15:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.1974683544303797) internal successors, (473), 395 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 473 transitions. [2024-10-12 15:15:50,590 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 473 transitions. Word has length 138 [2024-10-12 15:15:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:15:50,590 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 473 transitions. [2024-10-12 15:15:50,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:50,591 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 473 transitions. [2024-10-12 15:15:50,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-12 15:15:50,596 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:15:50,596 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:15:50,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 15:15:50,597 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:15:50,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:15:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash -44207696, now seen corresponding path program 1 times [2024-10-12 15:15:50,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:15:50,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262688092] [2024-10-12 15:15:50,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:15:50,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:15:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:15:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:15:50,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:15:50,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262688092] [2024-10-12 15:15:50,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262688092] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:15:50,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693378093] [2024-10-12 15:15:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:15:50,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:15:50,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:15:50,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 15:15:50,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-12 15:15:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:15:51,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:15:51,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:15:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 15:15:51,225 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:15:51,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693378093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:15:51,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:15:51,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-10-12 15:15:51,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246429047] [2024-10-12 15:15:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:15:51,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:15:51,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:15:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:15:51,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:15:51,227 INFO L87 Difference]: Start difference. First operand 396 states and 473 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:51,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:15:51,508 INFO L93 Difference]: Finished difference Result 922 states and 1123 transitions. [2024-10-12 15:15:51,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:15:51,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 146 [2024-10-12 15:15:51,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:15:51,510 INFO L225 Difference]: With dead ends: 922 [2024-10-12 15:15:51,510 INFO L226 Difference]: Without dead ends: 527 [2024-10-12 15:15:51,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-12 15:15:51,512 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 8 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 15:15:51,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 170 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 15:15:51,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-10-12 15:15:51,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2024-10-12 15:15:51,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 1.193916349809886) internal successors, (628), 526 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 628 transitions. [2024-10-12 15:15:51,526 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 628 transitions. Word has length 146 [2024-10-12 15:15:51,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:15:51,527 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 628 transitions. [2024-10-12 15:15:51,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 628 transitions. [2024-10-12 15:15:51,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-10-12 15:15:51,529 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:15:51,529 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:15:51,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 15:15:51,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:15:51,734 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:15:51,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:15:51,735 INFO L85 PathProgramCache]: Analyzing trace with hash -781107439, now seen corresponding path program 1 times [2024-10-12 15:15:51,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:15:51,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366079898] [2024-10-12 15:15:51,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:15:51,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:15:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:15:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 15:15:52,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:15:52,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366079898] [2024-10-12 15:15:52,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366079898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:15:52,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:15:52,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 15:15:52,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103076032] [2024-10-12 15:15:52,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:15:52,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:15:52,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:15:52,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:15:52,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:15:52,071 INFO L87 Difference]: Start difference. First operand 527 states and 628 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:15:52,550 INFO L93 Difference]: Finished difference Result 1184 states and 1414 transitions. [2024-10-12 15:15:52,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:15:52,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2024-10-12 15:15:52,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:15:52,553 INFO L225 Difference]: With dead ends: 1184 [2024-10-12 15:15:52,553 INFO L226 Difference]: Without dead ends: 658 [2024-10-12 15:15:52,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:15:52,555 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 86 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:15:52,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 45 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:15:52,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-10-12 15:15:52,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2024-10-12 15:15:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 1.17351598173516) internal successors, (771), 657 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 771 transitions. [2024-10-12 15:15:52,570 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 771 transitions. Word has length 184 [2024-10-12 15:15:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:15:52,571 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 771 transitions. [2024-10-12 15:15:52,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 771 transitions. [2024-10-12 15:15:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-10-12 15:15:52,574 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:15:52,574 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:15:52,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 15:15:52,575 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:15:52,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:15:52,576 INFO L85 PathProgramCache]: Analyzing trace with hash -418009165, now seen corresponding path program 1 times [2024-10-12 15:15:52,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:15:52,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684713670] [2024-10-12 15:15:52,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:15:52,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:15:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:15:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-12 15:15:52,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:15:52,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684713670] [2024-10-12 15:15:52,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684713670] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:15:52,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:15:52,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:15:52,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753930441] [2024-10-12 15:15:52,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:15:52,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:15:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:15:52,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:15:52,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:15:52,724 INFO L87 Difference]: Start difference. First operand 658 states and 771 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:53,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:15:53,105 INFO L93 Difference]: Finished difference Result 1970 states and 2310 transitions. [2024-10-12 15:15:53,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:15:53,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 193 [2024-10-12 15:15:53,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:15:53,109 INFO L225 Difference]: With dead ends: 1970 [2024-10-12 15:15:53,110 INFO L226 Difference]: Without dead ends: 1313 [2024-10-12 15:15:53,111 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 15:15:53,111 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 131 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-12 15:15:53,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 26 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-12 15:15:53,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2024-10-12 15:15:53,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1051. [2024-10-12 15:15:53,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.1885714285714286) internal successors, (1248), 1050 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1248 transitions. [2024-10-12 15:15:53,127 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1248 transitions. Word has length 193 [2024-10-12 15:15:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:15:53,127 INFO L471 AbstractCegarLoop]: Abstraction has 1051 states and 1248 transitions. [2024-10-12 15:15:53,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:53,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1248 transitions. [2024-10-12 15:15:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-10-12 15:15:53,129 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:15:53,129 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:15:53,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 15:15:53,130 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:15:53,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:15:53,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1276367326, now seen corresponding path program 1 times [2024-10-12 15:15:53,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:15:53,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189731850] [2024-10-12 15:15:53,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:15:53,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:15:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:15:53,509 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-12 15:15:53,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:15:53,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189731850] [2024-10-12 15:15:53,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189731850] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:15:53,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:15:53,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:15:53,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106704330] [2024-10-12 15:15:53,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:15:53,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:15:53,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:15:53,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:15:53,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:15:53,514 INFO L87 Difference]: Start difference. First operand 1051 states and 1248 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:15:54,247 INFO L93 Difference]: Finished difference Result 2756 states and 3258 transitions. [2024-10-12 15:15:54,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:15:54,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 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 199 [2024-10-12 15:15:54,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:15:54,256 INFO L225 Difference]: With dead ends: 2756 [2024-10-12 15:15:54,259 INFO L226 Difference]: Without dead ends: 1706 [2024-10-12 15:15:54,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:15:54,261 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 250 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-12 15:15:54,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 47 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-12 15:15:54,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2024-10-12 15:15:54,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1444. [2024-10-12 15:15:54,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 1.1718641718641718) internal successors, (1691), 1443 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 1691 transitions. [2024-10-12 15:15:54,301 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 1691 transitions. Word has length 199 [2024-10-12 15:15:54,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:15:54,304 INFO L471 AbstractCegarLoop]: Abstraction has 1444 states and 1691 transitions. [2024-10-12 15:15:54,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 1691 transitions. [2024-10-12 15:15:54,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-10-12 15:15:54,307 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:15:54,307 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:15:54,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 15:15:54,308 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:15:54,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:15:54,310 INFO L85 PathProgramCache]: Analyzing trace with hash -670389887, now seen corresponding path program 1 times [2024-10-12 15:15:54,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:15:54,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094281247] [2024-10-12 15:15:54,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:15:54,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:15:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:15:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:15:54,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:15:54,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094281247] [2024-10-12 15:15:54,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094281247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:15:54,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 15:15:54,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 15:15:54,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220939102] [2024-10-12 15:15:54,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:15:54,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 15:15:54,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:15:54,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 15:15:54,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:15:54,712 INFO L87 Difference]: Start difference. First operand 1444 states and 1691 transitions. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:55,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:15:55,199 INFO L93 Difference]: Finished difference Result 3804 states and 4485 transitions. [2024-10-12 15:15:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 15:15:55,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 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 217 [2024-10-12 15:15:55,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:15:55,209 INFO L225 Difference]: With dead ends: 3804 [2024-10-12 15:15:55,213 INFO L226 Difference]: Without dead ends: 2361 [2024-10-12 15:15:55,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 15:15:55,219 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 185 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:15:55,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 39 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:15:55,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2024-10-12 15:15:55,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2099. [2024-10-12 15:15:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 1.1510962821734985) internal successors, (2415), 2098 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2415 transitions. [2024-10-12 15:15:55,281 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2415 transitions. Word has length 217 [2024-10-12 15:15:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:15:55,281 INFO L471 AbstractCegarLoop]: Abstraction has 2099 states and 2415 transitions. [2024-10-12 15:15:55,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2415 transitions. [2024-10-12 15:15:55,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-10-12 15:15:55,288 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 15:15:55,288 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:15:55,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 15:15:55,289 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 15:15:55,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 15:15:55,289 INFO L85 PathProgramCache]: Analyzing trace with hash 980985794, now seen corresponding path program 1 times [2024-10-12 15:15:55,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 15:15:55,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653038062] [2024-10-12 15:15:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:15:55,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 15:15:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:15:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 101 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 15:15:55,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 15:15:55,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653038062] [2024-10-12 15:15:55,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653038062] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 15:15:55,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681948949] [2024-10-12 15:15:55,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 15:15:55,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 15:15:55,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 15:15:55,803 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) [2024-10-12 15:15:55,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-12 15:15:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 15:15:55,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 15:15:55,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 15:15:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-12 15:15:56,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 15:15:56,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681948949] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 15:15:56,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 15:15:56,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-10-12 15:15:56,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751025859] [2024-10-12 15:15:56,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 15:15:56,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 15:15:56,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 15:15:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 15:15:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 15:15:56,146 INFO L87 Difference]: Start difference. First operand 2099 states and 2415 transitions. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:56,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 15:15:56,706 INFO L93 Difference]: Finished difference Result 4588 states and 5265 transitions. [2024-10-12 15:15:56,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 15:15:56,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 230 [2024-10-12 15:15:56,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 15:15:56,707 INFO L225 Difference]: With dead ends: 4588 [2024-10-12 15:15:56,707 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 15:15:56,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-12 15:15:56,711 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-12 15:15:56,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 179 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-12 15:15:56,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 15:15:56,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 15:15:56,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 15:15:56,713 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 230 [2024-10-12 15:15:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 15:15:56,714 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 15:15:56,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 15:15:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 15:15:56,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 15:15:56,718 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 15:15:56,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 15:15:56,923 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,SelfDestructingSolverStorable8 [2024-10-12 15:15:56,927 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 15:15:56,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-12 15:15:57,054 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-12 15:15:57,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:15:57 BoogieIcfgContainer [2024-10-12 15:15:57,068 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-12 15:15:57,069 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 15:15:57,069 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 15:15:57,069 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 15:15:57,069 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:15:47" (3/4) ... [2024-10-12 15:15:57,071 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-12 15:15:57,085 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-10-12 15:15:57,086 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-10-12 15:15:57,087 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-12 15:15:57,087 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-12 15:15:57,207 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 15:15:57,208 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-12 15:15:57,208 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 15:15:57,209 INFO L158 Benchmark]: Toolchain (without parser) took 11273.33ms. Allocated memory was 184.5MB in the beginning and 373.3MB in the end (delta: 188.7MB). Free memory was 112.9MB in the beginning and 319.8MB in the end (delta: -206.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 15:15:57,209 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 15:15:57,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.13ms. Allocated memory is still 184.5MB. Free memory was 112.9MB in the beginning and 146.0MB in the end (delta: -33.0MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2024-10-12 15:15:57,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.05ms. Allocated memory is still 184.5MB. Free memory was 146.0MB in the beginning and 139.8MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 15:15:57,210 INFO L158 Benchmark]: Boogie Preprocessor took 84.52ms. Allocated memory is still 184.5MB. Free memory was 139.8MB in the beginning and 134.4MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-12 15:15:57,210 INFO L158 Benchmark]: RCFGBuilder took 923.54ms. Allocated memory is still 184.5MB. Free memory was 134.4MB in the beginning and 137.1MB in the end (delta: -2.7MB). Peak memory consumption was 88.5MB. Max. memory is 16.1GB. [2024-10-12 15:15:57,210 INFO L158 Benchmark]: TraceAbstraction took 9569.04ms. Allocated memory was 184.5MB in the beginning and 373.3MB in the end (delta: 188.7MB). Free memory was 136.1MB in the beginning and 331.4MB in the end (delta: -195.3MB). Peak memory consumption was 208.4MB. Max. memory is 16.1GB. [2024-10-12 15:15:57,210 INFO L158 Benchmark]: Witness Printer took 139.73ms. Allocated memory is still 373.3MB. Free memory was 331.4MB in the beginning and 319.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 15:15:57,211 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 471.13ms. Allocated memory is still 184.5MB. Free memory was 112.9MB in the beginning and 146.0MB in the end (delta: -33.0MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.05ms. Allocated memory is still 184.5MB. Free memory was 146.0MB in the beginning and 139.8MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.52ms. Allocated memory is still 184.5MB. Free memory was 139.8MB in the beginning and 134.4MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 923.54ms. Allocated memory is still 184.5MB. Free memory was 134.4MB in the beginning and 137.1MB in the end (delta: -2.7MB). Peak memory consumption was 88.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9569.04ms. Allocated memory was 184.5MB in the beginning and 373.3MB in the end (delta: 188.7MB). Free memory was 136.1MB in the beginning and 331.4MB in the end (delta: -195.3MB). Peak memory consumption was 208.4MB. Max. memory is 16.1GB. * Witness Printer took 139.73ms. Allocated memory is still 373.3MB. Free memory was 331.4MB in the beginning and 319.8MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 582]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 136 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.4s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1080 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1080 mSDsluCounter, 824 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 550 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3775 IncrementalHoareTripleChecker+Invalid, 4325 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 550 mSolverCounterUnsat, 759 mSDtfsCounter, 3775 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2099occurred in iteration=8, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1048 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1945 NumberOfCodeBlocks, 1945 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1934 ConstructedInterpolants, 0 QuantifiedInterpolants, 8922 SizeOfPredicates, 0 NumberOfNonLiveVariables, 655 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 628/680 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((a12 == 8) && (a21 == 1)) && (a17 == 1)) && (a20 == 1)) || (((a21 <= 0) && (a17 == 1)) && (a20 == 1))) || ((6 <= a16) && (a20 == 1))) || (a16 < 5)) || (a8 != 13)) RESULT: Ultimate proved your program to be correct! [2024-10-12 15:15:57,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE