./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/nested-1.i --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/loop-new/nested-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-12 18:35:12,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 18:35:12,199 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-12 18:35:12,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 18:35:12,208 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 18:35:12,229 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 18:35:12,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 18:35:12,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 18:35:12,231 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 18:35:12,231 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 18:35:12,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 18:35:12,232 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 18:35:12,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 18:35:12,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 18:35:12,233 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 18:35:12,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 18:35:12,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 18:35:12,235 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 18:35:12,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 18:35:12,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 18:35:12,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 18:35:12,238 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 18:35:12,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 18:35:12,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 18:35:12,240 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 18:35:12,242 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 18:35:12,243 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 18:35:12,243 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 18:35:12,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 18:35:12,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 18:35:12,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 18:35:12,245 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 18:35:12,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:35:12,246 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 18:35:12,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 18:35:12,247 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 18:35:12,247 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 18:35:12,247 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 18:35:12,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 18:35:12,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 18:35:12,248 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 18:35:12,248 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 18:35:12,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a [2024-10-12 18:35:12,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 18:35:12,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 18:35:12,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 18:35:12,511 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 18:35:12,512 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 18:35:12,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/nested-1.i [2024-10-12 18:35:13,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 18:35:14,117 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 18:35:14,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/nested-1.i [2024-10-12 18:35:14,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1bf83e8/ccff6791aef049a6a7b8b980bd565561/FLAG9bd88acb7 [2024-10-12 18:35:14,139 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1bf83e8/ccff6791aef049a6a7b8b980bd565561 [2024-10-12 18:35:14,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 18:35:14,143 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 18:35:14,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 18:35:14,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 18:35:14,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 18:35:14,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8a995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14, skipping insertion in model container [2024-10-12 18:35:14,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,173 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 18:35:14,334 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/loop-new/nested-1.i[891,904] [2024-10-12 18:35:14,348 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:35:14,360 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 18:35:14,373 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/loop-new/nested-1.i[891,904] [2024-10-12 18:35:14,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 18:35:14,392 INFO L204 MainTranslator]: Completed translation [2024-10-12 18:35:14,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14 WrapperNode [2024-10-12 18:35:14,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 18:35:14,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 18:35:14,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 18:35:14,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 18:35:14,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,424 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2024-10-12 18:35:14,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 18:35:14,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 18:35:14,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 18:35:14,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 18:35:14,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,447 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 18:35:14,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,450 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,472 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 18:35:14,473 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 18:35:14,473 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 18:35:14,473 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 18:35:14,474 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (1/1) ... [2024-10-12 18:35:14,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 18:35:14,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:14,511 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 18:35:14,515 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 18:35:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 18:35:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 18:35:14,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 18:35:14,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 18:35:14,639 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 18:35:14,643 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 18:35:14,791 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-10-12 18:35:14,792 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 18:35:14,824 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 18:35:14,824 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-12 18:35:14,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:35:14 BoogieIcfgContainer [2024-10-12 18:35:14,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 18:35:14,829 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 18:35:14,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 18:35:14,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 18:35:14,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:35:14" (1/3) ... [2024-10-12 18:35:14,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f463d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:35:14, skipping insertion in model container [2024-10-12 18:35:14,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:35:14" (2/3) ... [2024-10-12 18:35:14,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f463d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:35:14, skipping insertion in model container [2024-10-12 18:35:14,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:35:14" (3/3) ... [2024-10-12 18:35:14,835 INFO L112 eAbstractionObserver]: Analyzing ICFG nested-1.i [2024-10-12 18:35:14,853 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 18:35:14,853 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-12 18:35:14,912 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 18:35:14,918 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;@3dfa499e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 18:35:14,920 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-12 18:35:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:14,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-12 18:35:14,930 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:14,931 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:14,931 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:14,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:14,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1747925551, now seen corresponding path program 1 times [2024-10-12 18:35:14,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:14,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003183476] [2024-10-12 18:35:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:14,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:15,186 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 18:35:15,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:15,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003183476] [2024-10-12 18:35:15,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003183476] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:35:15,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:35:15,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 18:35:15,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127014571] [2024-10-12 18:35:15,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:35:15,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:35:15,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:15,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:35:15,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:35:15,219 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 18:35:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:15,277 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2024-10-12 18:35:15,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:35:15,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2024-10-12 18:35:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:15,286 INFO L225 Difference]: With dead ends: 27 [2024-10-12 18:35:15,287 INFO L226 Difference]: Without dead ends: 13 [2024-10-12 18:35:15,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 18:35:15,295 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:15,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:15,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-12 18:35:15,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2024-10-12 18:35:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:15,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2024-10-12 18:35:15,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2024-10-12 18:35:15,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:15,328 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2024-10-12 18:35:15,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 18:35:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2024-10-12 18:35:15,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-12 18:35:15,328 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:15,328 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:15,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 18:35:15,329 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:15,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:15,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1690879097, now seen corresponding path program 1 times [2024-10-12 18:35:15,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:15,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55089010] [2024-10-12 18:35:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:15,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:15,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:15,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55089010] [2024-10-12 18:35:15,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55089010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:35:15,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 18:35:15,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 18:35:15,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517627503] [2024-10-12 18:35:15,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:35:15,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 18:35:15,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 18:35:15,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 18:35:15,500 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:15,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:15,513 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2024-10-12 18:35:15,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 18:35:15,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-10-12 18:35:15,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:15,515 INFO L225 Difference]: With dead ends: 19 [2024-10-12 18:35:15,515 INFO L226 Difference]: Without dead ends: 12 [2024-10-12 18:35:15,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 18:35:15,516 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:15,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 15 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-12 18:35:15,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-12 18:35:15,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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 18:35:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-10-12 18:35:15,521 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2024-10-12 18:35:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:15,522 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-10-12 18:35:15,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-10-12 18:35:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-12 18:35:15,523 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:15,523 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:15,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 18:35:15,524 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:15,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash -256911847, now seen corresponding path program 1 times [2024-10-12 18:35:15,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:15,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353051229] [2024-10-12 18:35:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:15,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:15,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:15,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353051229] [2024-10-12 18:35:15,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353051229] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:15,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968156487] [2024-10-12 18:35:15,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:15,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:15,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:15,668 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 18:35:15,669 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 18:35:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:15,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 18:35:15,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:15,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:15,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968156487] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:15,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:15,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-12 18:35:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016267176] [2024-10-12 18:35:15,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:15,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 18:35:15,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:15,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 18:35:15,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:35:15,845 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 18:35:15,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:15,903 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2024-10-12 18:35:15,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 18:35:15,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-12 18:35:15,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:15,905 INFO L225 Difference]: With dead ends: 23 [2024-10-12 18:35:15,905 INFO L226 Difference]: Without dead ends: 15 [2024-10-12 18:35:15,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:35:15,906 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:15,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:15,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-12 18:35:15,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-12 18:35:15,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-10-12 18:35:15,912 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2024-10-12 18:35:15,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:15,912 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-10-12 18:35:15,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 18:35:15,913 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-10-12 18:35:15,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-12 18:35:15,914 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:15,914 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:15,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 18:35:16,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:16,115 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:16,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:16,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1362088839, now seen corresponding path program 2 times [2024-10-12 18:35:16,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:16,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784859267] [2024-10-12 18:35:16,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:16,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:16,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:16,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784859267] [2024-10-12 18:35:16,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784859267] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:16,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798689113] [2024-10-12 18:35:16,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 18:35:16,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:16,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:16,286 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 18:35:16,287 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 18:35:16,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 18:35:16,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:16,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:35:16,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:16,446 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:16,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 18:35:16,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798689113] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:16,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:16,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-12 18:35:16,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018435748] [2024-10-12 18:35:16,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:16,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 18:35:16,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:16,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 18:35:16,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:35:16,548 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 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 18:35:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:16,672 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2024-10-12 18:35:16,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:35:16,672 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-12 18:35:16,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:16,673 INFO L225 Difference]: With dead ends: 32 [2024-10-12 18:35:16,673 INFO L226 Difference]: Without dead ends: 21 [2024-10-12 18:35:16,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-10-12 18:35:16,676 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:16,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:16,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-12 18:35:16,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-10-12 18:35:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-10-12 18:35:16,687 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2024-10-12 18:35:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:16,687 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-10-12 18:35:16,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 19 states have internal predecessors, (27), 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 18:35:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-10-12 18:35:16,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-12 18:35:16,689 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:16,689 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:16,706 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 18:35:16,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-12 18:35:16,890 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:16,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:16,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1202599815, now seen corresponding path program 3 times [2024-10-12 18:35:16,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:16,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191924501] [2024-10-12 18:35:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:16,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:35:17,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:17,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191924501] [2024-10-12 18:35:17,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191924501] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:17,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771841565] [2024-10-12 18:35:17,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 18:35:17,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:17,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:17,023 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:17,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-12 18:35:17,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-12 18:35:17,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:17,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 18:35:17,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:35:17,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-10-12 18:35:17,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771841565] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:17,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:17,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-12 18:35:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828346722] [2024-10-12 18:35:17,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:17,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-12 18:35:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 18:35:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-10-12 18:35:17,192 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:17,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:17,253 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2024-10-12 18:35:17,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 18:35:17,254 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-12 18:35:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:17,255 INFO L225 Difference]: With dead ends: 64 [2024-10-12 18:35:17,255 INFO L226 Difference]: Without dead ends: 60 [2024-10-12 18:35:17,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-10-12 18:35:17,256 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:17,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 19 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-12 18:35:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-12 18:35:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-12 18:35:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2024-10-12 18:35:17,270 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 20 [2024-10-12 18:35:17,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:17,271 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2024-10-12 18:35:17,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:17,271 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2024-10-12 18:35:17,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-10-12 18:35:17,272 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:17,272 INFO L215 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:17,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-12 18:35:17,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:17,477 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:17,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:17,477 INFO L85 PathProgramCache]: Analyzing trace with hash 161446575, now seen corresponding path program 4 times [2024-10-12 18:35:17,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:17,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725549561] [2024-10-12 18:35:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:17,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-12 18:35:17,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:17,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725549561] [2024-10-12 18:35:17,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725549561] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:17,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096429554] [2024-10-12 18:35:17,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-12 18:35:17,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:17,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:17,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:17,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-12 18:35:17,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-12 18:35:17,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:17,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 18:35:17,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-12 18:35:18,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 18:35:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-12 18:35:18,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096429554] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 18:35:18,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 18:35:18,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-12 18:35:18,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128821176] [2024-10-12 18:35:18,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 18:35:18,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 18:35:18,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:18,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 18:35:18,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-10-12 18:35:18,181 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 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 18:35:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:18,356 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2024-10-12 18:35:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 18:35:18,356 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 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 59 [2024-10-12 18:35:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:18,358 INFO L225 Difference]: With dead ends: 142 [2024-10-12 18:35:18,358 INFO L226 Difference]: Without dead ends: 138 [2024-10-12 18:35:18,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-10-12 18:35:18,359 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:18,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 33 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-12 18:35:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-10-12 18:35:18,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2024-10-12 18:35:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0802919708029197) internal successors, (148), 137 states have internal predecessors, (148), 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 18:35:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 148 transitions. [2024-10-12 18:35:18,400 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 148 transitions. Word has length 59 [2024-10-12 18:35:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:18,403 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 148 transitions. [2024-10-12 18:35:18,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 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 18:35:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 148 transitions. [2024-10-12 18:35:18,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-10-12 18:35:18,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-12 18:35:18,407 INFO L215 NwaCegarLoop]: trace histogram [100, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 18:35:18,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 18:35:18,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:18,608 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-12 18:35:18,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 18:35:18,608 INFO L85 PathProgramCache]: Analyzing trace with hash -872660113, now seen corresponding path program 5 times [2024-10-12 18:35:18,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 18:35:18,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263629335] [2024-10-12 18:35:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 18:35:18,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 18:35:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 18:35:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 5967 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 18:35:25,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 18:35:25,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263629335] [2024-10-12 18:35:25,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263629335] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 18:35:25,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854706750] [2024-10-12 18:35:25,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-12 18:35:25,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:25,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 18:35:25,268 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 18:35:25,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-12 18:35:25,482 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-10-12 18:35:25,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 18:35:25,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-10-12 18:35:25,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 18:35:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6095 backedges. 6086 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 18:35:25,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 18:35:25,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854706750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 18:35:25,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 18:35:25,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [103] total 105 [2024-10-12 18:35:25,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813717585] [2024-10-12 18:35:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 18:35:25,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-10-12 18:35:25,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 18:35:25,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-10-12 18:35:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2024-10-12 18:35:25,837 INFO L87 Difference]: Start difference. First operand 138 states and 148 transitions. Second operand has 104 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 103 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:27,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 18:35:27,301 INFO L93 Difference]: Finished difference Result 5583 states and 6043 transitions. [2024-10-12 18:35:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-10-12 18:35:27,303 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 103 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2024-10-12 18:35:27,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-12 18:35:27,308 INFO L225 Difference]: With dead ends: 5583 [2024-10-12 18:35:27,308 INFO L226 Difference]: Without dead ends: 0 [2024-10-12 18:35:27,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2024-10-12 18:35:27,321 INFO L432 NwaCegarLoop]: 277 mSDtfsCounter, 244 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-12 18:35:27,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1394 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-12 18:35:27,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-12 18:35:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-12 18:35:27,324 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 18:35:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-12 18:35:27,328 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 137 [2024-10-12 18:35:27,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-12 18:35:27,329 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 18:35:27,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 103 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 18:35:27,331 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-12 18:35:27,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-12 18:35:27,334 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-12 18:35:27,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-12 18:35:27,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 18:35:27,538 INFO L407 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2024-10-12 18:35:27,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.