./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/xcsp/Dubois-065.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/xcsp/Dubois-065.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 c9789ed3fb7c723a015b476139983e23c0e32cb4759acdfba93a51a8c26be62c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:22:41,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:22:41,872 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:22:41,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:22:41,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:22:41,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:22:41,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:22:41,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:22:41,891 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:22:41,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:22:41,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:22:41,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:22:41,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:22:41,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:22:41,893 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:22:41,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:22:41,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:22:41,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:22:41,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:22:41,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:22:41,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:22:41,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:22:41,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:22:41,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:22:41,895 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:22:41,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:22:41,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:22:41,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:22:41,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:22:41,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:22:41,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:22:41,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:22:41,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:22:41,897 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:22:41,898 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:22:41,898 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:22:41,898 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:22:41,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:22:41,898 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:22:41,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:22:41,899 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:22:41,899 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:22:41,900 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9789ed3fb7c723a015b476139983e23c0e32cb4759acdfba93a51a8c26be62c [2024-11-18 15:22:42,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:22:42,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:22:42,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:22:42,151 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:22:42,152 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:22:42,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/xcsp/Dubois-065.c [2024-11-18 15:22:43,600 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:22:43,817 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:22:43,818 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/Dubois-065.c [2024-11-18 15:22:43,842 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c84a8e446/f3130e1565de45cb9c702db0e0895868/FLAG1d73102a0 [2024-11-18 15:22:43,857 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c84a8e446/f3130e1565de45cb9c702db0e0895868 [2024-11-18 15:22:43,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:22:43,863 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:22:43,864 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:22:43,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:22:43,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:22:43,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:22:43" (1/1) ... [2024-11-18 15:22:43,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326cc757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:43, skipping insertion in model container [2024-11-18 15:22:43,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:22:43" (1/1) ... [2024-11-18 15:22:43,936 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:22:44,363 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/Dubois-065.c[46320,46333] [2024-11-18 15:22:44,408 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:22:44,416 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:22:44,498 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/Dubois-065.c[46320,46333] [2024-11-18 15:22:44,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:22:44,636 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:22:44,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44 WrapperNode [2024-11-18 15:22:44,640 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:22:44,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:22:44,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:22:44,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:22:44,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:44,794 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:45,371 INFO L138 Inliner]: procedures = 13, calls = 527, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12951 [2024-11-18 15:22:45,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:22:45,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:22:45,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:22:45,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:22:45,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:45,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:45,509 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:45,653 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 15:22:45,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:45,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:45,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:45,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:45,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:46,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:46,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:22:46,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:22:46,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:22:46,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:22:46,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (1/1) ... [2024-11-18 15:22:46,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:22:46,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:22:46,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:22:46,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:22:46,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:22:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:22:46,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:22:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:22:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-18 15:22:46,267 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-18 15:22:46,759 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:22:46,761 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:23:00,537 INFO L? ?]: Removed 4490 outVars from TransFormulas that were not future-live. [2024-11-18 15:23:00,537 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:23:00,615 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:23:00,616 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 15:23:00,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:23:00 BoogieIcfgContainer [2024-11-18 15:23:00,616 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:23:00,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:23:00,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:23:00,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:23:00,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:22:43" (1/3) ... [2024-11-18 15:23:00,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea8d9ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:23:00, skipping insertion in model container [2024-11-18 15:23:00,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:22:44" (2/3) ... [2024-11-18 15:23:00,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea8d9ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:23:00, skipping insertion in model container [2024-11-18 15:23:00,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:23:00" (3/3) ... [2024-11-18 15:23:00,622 INFO L112 eAbstractionObserver]: Analyzing ICFG Dubois-065.c [2024-11-18 15:23:00,633 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:23:00,634 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:23:00,756 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:23:00,761 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;@5951cecc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:23:00,761 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:23:00,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 5146 states, 4623 states have (on average 1.6190785204412719) internal successors, (7485), 4624 states have internal predecessors, (7485), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520) [2024-11-18 15:23:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4359 [2024-11-18 15:23:01,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:01,079 INFO L215 NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:01,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:01,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:01,086 INFO L85 PathProgramCache]: Analyzing trace with hash 650817423, now seen corresponding path program 1 times [2024-11-18 15:23:01,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:01,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239527722] [2024-11-18 15:23:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:01,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:04,350 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 0 proven. 1038 refuted. 0 times theorem prover too weak. 538722 trivial. 0 not checked. [2024-11-18 15:23:04,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:23:04,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239527722] [2024-11-18 15:23:04,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239527722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:23:04,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765980151] [2024-11-18 15:23:04,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:04,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:04,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:04,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:23:04,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:23:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:05,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 9516 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 15:23:06,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:23:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 1038 proven. 0 refuted. 0 times theorem prover too weak. 538722 trivial. 0 not checked. [2024-11-18 15:23:06,251 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:23:06,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765980151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:23:06,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:23:06,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 15:23:06,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508892086] [2024-11-18 15:23:06,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:23:06,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 15:23:06,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:23:06,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 15:23:06,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:23:06,304 INFO L87 Difference]: Start difference. First operand has 5146 states, 4623 states have (on average 1.6190785204412719) internal successors, (7485), 4624 states have internal predecessors, (7485), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520) Second operand has 2 states, 2 states have (on average 881.5) internal successors, (1763), 2 states have internal predecessors, (1763), 2 states have call successors, (520), 2 states have call predecessors, (520), 1 states have return successors, (520), 1 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:23:06,698 INFO L93 Difference]: Finished difference Result 10286 states and 17564 transitions. [2024-11-18 15:23:06,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 15:23:06,702 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 881.5) internal successors, (1763), 2 states have internal predecessors, (1763), 2 states have call successors, (520), 2 states have call predecessors, (520), 1 states have return successors, (520), 1 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4358 [2024-11-18 15:23:06,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:23:06,738 INFO L225 Difference]: With dead ends: 10286 [2024-11-18 15:23:06,738 INFO L226 Difference]: Without dead ends: 5143 [2024-11-18 15:23:06,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4359 GetRequests, 4359 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:23:06,761 INFO L432 NwaCegarLoop]: 8521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8521 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:23:06,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8521 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:23:06,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5143 states. [2024-11-18 15:23:07,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5143 to 5143. [2024-11-18 15:23:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5143 states, 4621 states have (on average 1.6189136550530188) internal successors, (7481), 4621 states have internal predecessors, (7481), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520) [2024-11-18 15:23:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5143 states to 5143 states and 8521 transitions. [2024-11-18 15:23:07,084 INFO L78 Accepts]: Start accepts. Automaton has 5143 states and 8521 transitions. Word has length 4358 [2024-11-18 15:23:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:23:07,086 INFO L471 AbstractCegarLoop]: Abstraction has 5143 states and 8521 transitions. [2024-11-18 15:23:07,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 881.5) internal successors, (1763), 2 states have internal predecessors, (1763), 2 states have call successors, (520), 2 states have call predecessors, (520), 1 states have return successors, (520), 1 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:07,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5143 states and 8521 transitions. [2024-11-18 15:23:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4359 [2024-11-18 15:23:07,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:07,266 INFO L215 NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:07,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 15:23:07,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 15:23:07,468 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:07,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:07,469 INFO L85 PathProgramCache]: Analyzing trace with hash -469668593, now seen corresponding path program 1 times [2024-11-18 15:23:07,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:07,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427646792] [2024-11-18 15:23:07,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:07,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:13,268 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked. [2024-11-18 15:23:13,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:23:13,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427646792] [2024-11-18 15:23:13,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427646792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:23:13,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409725032] [2024-11-18 15:23:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:13,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:13,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:13,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:23:13,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:23:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:14,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 9516 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 15:23:15,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:23:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 197601 proven. 0 refuted. 0 times theorem prover too weak. 342159 trivial. 0 not checked. [2024-11-18 15:23:15,475 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:23:15,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409725032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:23:15,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:23:15,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-18 15:23:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695741297] [2024-11-18 15:23:15,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:23:15,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:23:15,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:23:15,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:23:15,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:23:15,497 INFO L87 Difference]: Start difference. First operand 5143 states and 8521 transitions. Second operand has 6 states, 5 states have (on average 353.4) internal successors, (1767), 6 states have internal predecessors, (1767), 3 states have call successors, (520), 2 states have call predecessors, (520), 3 states have return successors, (520), 2 states have call predecessors, (520), 3 states have call successors, (520) [2024-11-18 15:23:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:23:19,402 INFO L93 Difference]: Finished difference Result 9495 states and 15727 transitions. [2024-11-18 15:23:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:23:19,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 353.4) internal successors, (1767), 6 states have internal predecessors, (1767), 3 states have call successors, (520), 2 states have call predecessors, (520), 3 states have return successors, (520), 2 states have call predecessors, (520), 3 states have call successors, (520) Word has length 4358 [2024-11-18 15:23:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:23:19,436 INFO L225 Difference]: With dead ends: 9495 [2024-11-18 15:23:19,437 INFO L226 Difference]: Without dead ends: 5145 [2024-11-18 15:23:19,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4363 GetRequests, 4357 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:23:19,447 INFO L432 NwaCegarLoop]: 7997 mSDtfsCounter, 1 mSDsluCounter, 30935 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38932 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:23:19,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38932 Invalid, 3670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-18 15:23:19,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5145 states. [2024-11-18 15:23:19,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5145 to 5145. [2024-11-18 15:23:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5145 states, 4623 states have (on average 1.618645900930132) internal successors, (7483), 4623 states have internal predecessors, (7483), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520) [2024-11-18 15:23:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5145 states to 5145 states and 8523 transitions. [2024-11-18 15:23:19,681 INFO L78 Accepts]: Start accepts. Automaton has 5145 states and 8523 transitions. Word has length 4358 [2024-11-18 15:23:19,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:23:19,687 INFO L471 AbstractCegarLoop]: Abstraction has 5145 states and 8523 transitions. [2024-11-18 15:23:19,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 353.4) internal successors, (1767), 6 states have internal predecessors, (1767), 3 states have call successors, (520), 2 states have call predecessors, (520), 3 states have return successors, (520), 2 states have call predecessors, (520), 3 states have call successors, (520) [2024-11-18 15:23:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5145 states and 8523 transitions. [2024-11-18 15:23:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4360 [2024-11-18 15:23:19,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:19,769 INFO L215 NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:19,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 15:23:19,970 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,SelfDestructingSolverStorable1 [2024-11-18 15:23:19,971 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:19,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1906132276, now seen corresponding path program 1 times [2024-11-18 15:23:19,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:19,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984060097] [2024-11-18 15:23:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:19,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked. [2024-11-18 15:23:23,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:23:23,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984060097] [2024-11-18 15:23:23,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984060097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:23:23,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640998148] [2024-11-18 15:23:23,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:23,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:23,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:23,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:23:23,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:23:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:24,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 9519 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 15:23:24,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:23:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 197500 proven. 0 refuted. 0 times theorem prover too weak. 342260 trivial. 0 not checked. [2024-11-18 15:23:24,740 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:23:24,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640998148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:23:24,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:23:24,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-18 15:23:24,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489106122] [2024-11-18 15:23:24,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:23:24,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:23:24,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:23:24,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:23:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:23:24,754 INFO L87 Difference]: Start difference. First operand 5145 states and 8523 transitions. Second operand has 4 states, 4 states have (on average 441.25) internal successors, (1765), 4 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:24,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:23:24,973 INFO L93 Difference]: Finished difference Result 9515 states and 15757 transitions. [2024-11-18 15:23:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:23:24,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 441.25) internal successors, (1765), 4 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4359 [2024-11-18 15:23:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:23:25,015 INFO L225 Difference]: With dead ends: 9515 [2024-11-18 15:23:25,015 INFO L226 Difference]: Without dead ends: 5154 [2024-11-18 15:23:25,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4364 GetRequests, 4358 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:23:25,032 INFO L432 NwaCegarLoop]: 8517 mSDtfsCounter, 9 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25538 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:23:25,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25538 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:23:25,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5154 states. [2024-11-18 15:23:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5154 to 5154. [2024-11-18 15:23:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5154 states, 4632 states have (on average 1.618307426597582) internal successors, (7496), 4632 states have internal predecessors, (7496), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520) [2024-11-18 15:23:25,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 8536 transitions. [2024-11-18 15:23:25,476 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 8536 transitions. Word has length 4359 [2024-11-18 15:23:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:23:25,483 INFO L471 AbstractCegarLoop]: Abstraction has 5154 states and 8536 transitions. [2024-11-18 15:23:25,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 441.25) internal successors, (1765), 4 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 8536 transitions. [2024-11-18 15:23:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4360 [2024-11-18 15:23:25,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:25,746 INFO L215 NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:25,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 15:23:25,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:25,951 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:25,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:25,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2024112806, now seen corresponding path program 1 times [2024-11-18 15:23:25,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:25,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168892379] [2024-11-18 15:23:25,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:25,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:26,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked. [2024-11-18 15:23:30,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:23:30,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168892379] [2024-11-18 15:23:30,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168892379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:23:30,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633657153] [2024-11-18 15:23:30,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:30,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:30,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:30,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:23:30,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 15:23:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:31,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 9519 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:23:31,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:23:32,039 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 197500 proven. 0 refuted. 0 times theorem prover too weak. 342260 trivial. 0 not checked. [2024-11-18 15:23:32,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:23:32,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633657153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:23:32,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:23:32,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 15:23:32,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022237117] [2024-11-18 15:23:32,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:23:32,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:23:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:23:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:23:32,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:23:32,062 INFO L87 Difference]: Start difference. First operand 5154 states and 8536 transitions. Second operand has 3 states, 3 states have (on average 588.3333333333334) internal successors, (1765), 3 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:32,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:23:32,187 INFO L93 Difference]: Finished difference Result 9512 states and 15750 transitions. [2024-11-18 15:23:32,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:23:32,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 588.3333333333334) internal successors, (1765), 3 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4359 [2024-11-18 15:23:32,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:23:32,212 INFO L225 Difference]: With dead ends: 9512 [2024-11-18 15:23:32,213 INFO L226 Difference]: Without dead ends: 5155 [2024-11-18 15:23:32,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4364 GetRequests, 4359 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:23:32,222 INFO L432 NwaCegarLoop]: 8520 mSDtfsCounter, 0 mSDsluCounter, 8511 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17031 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:23:32,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17031 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:23:32,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5155 states. [2024-11-18 15:23:32,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5155 to 5155. [2024-11-18 15:23:32,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 4633 states have (on average 1.6179581264839198) internal successors, (7496), 4633 states have internal predecessors, (7496), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520) [2024-11-18 15:23:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 8536 transitions. [2024-11-18 15:23:32,488 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 8536 transitions. Word has length 4359 [2024-11-18 15:23:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:23:32,490 INFO L471 AbstractCegarLoop]: Abstraction has 5155 states and 8536 transitions. [2024-11-18 15:23:32,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 588.3333333333334) internal successors, (1765), 3 states have internal predecessors, (1765), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 8536 transitions. [2024-11-18 15:23:32,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4361 [2024-11-18 15:23:32,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:32,652 INFO L215 NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:32,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 15:23:32,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:32,853 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:32,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:32,856 INFO L85 PathProgramCache]: Analyzing trace with hash -583771831, now seen corresponding path program 1 times [2024-11-18 15:23:32,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:32,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388507412] [2024-11-18 15:23:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:32,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked. [2024-11-18 15:23:36,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:23:36,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388507412] [2024-11-18 15:23:36,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388507412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:23:36,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448753027] [2024-11-18 15:23:36,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:36,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:36,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:36,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:23:36,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 15:23:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:38,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 9522 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 15:23:38,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:23:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 1557 proven. 0 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked. [2024-11-18 15:23:38,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:23:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448753027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:23:38,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:23:38,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-18 15:23:38,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465332820] [2024-11-18 15:23:38,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:23:38,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:23:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:23:38,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:23:38,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:23:38,306 INFO L87 Difference]: Start difference. First operand 5155 states and 8536 transitions. Second operand has 6 states, 5 states have (on average 353.2) internal successors, (1766), 6 states have internal predecessors, (1766), 2 states have call successors, (520), 1 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:40,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:23:40,299 INFO L93 Difference]: Finished difference Result 5167 states and 8550 transitions. [2024-11-18 15:23:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:23:40,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 353.2) internal successors, (1766), 6 states have internal predecessors, (1766), 2 states have call successors, (520), 1 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4360 [2024-11-18 15:23:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:23:40,324 INFO L225 Difference]: With dead ends: 5167 [2024-11-18 15:23:40,324 INFO L226 Difference]: Without dead ends: 5157 [2024-11-18 15:23:40,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4365 GetRequests, 4359 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:23:40,326 INFO L432 NwaCegarLoop]: 7997 mSDtfsCounter, 1 mSDsluCounter, 30935 mSDsCounter, 0 mSdLazyCounter, 3669 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38932 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 15:23:40,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38932 Invalid, 3670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3669 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 15:23:40,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2024-11-18 15:23:40,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 5157. [2024-11-18 15:23:40,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 4635 states have (on average 1.6176914778856526) internal successors, (7498), 4635 states have internal predecessors, (7498), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520) [2024-11-18 15:23:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 8538 transitions. [2024-11-18 15:23:40,553 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 8538 transitions. Word has length 4360 [2024-11-18 15:23:40,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:23:40,557 INFO L471 AbstractCegarLoop]: Abstraction has 5157 states and 8538 transitions. [2024-11-18 15:23:40,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 353.2) internal successors, (1766), 6 states have internal predecessors, (1766), 2 states have call successors, (520), 1 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 8538 transitions. [2024-11-18 15:23:40,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4362 [2024-11-18 15:23:40,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:40,690 INFO L215 NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:40,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 15:23:40,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:40,892 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:40,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1148394790, now seen corresponding path program 1 times [2024-11-18 15:23:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:40,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026825063] [2024-11-18 15:23:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:40,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked. [2024-11-18 15:23:44,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:23:44,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026825063] [2024-11-18 15:23:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026825063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:23:44,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168163592] [2024-11-18 15:23:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:44,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:44,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:44,334 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:23:44,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 15:23:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:45,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 9525 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 15:23:45,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:23:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 2076 proven. 0 refuted. 0 times theorem prover too weak. 537684 trivial. 0 not checked. [2024-11-18 15:23:45,894 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:23:45,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168163592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:23:45,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:23:45,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-18 15:23:45,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479709165] [2024-11-18 15:23:45,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:23:45,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:23:45,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:23:45,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:23:45,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:23:45,901 INFO L87 Difference]: Start difference. First operand 5157 states and 8538 transitions. Second operand has 4 states, 4 states have (on average 441.75) internal successors, (1767), 4 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:45,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:23:45,976 INFO L93 Difference]: Finished difference Result 5187 states and 8580 transitions. [2024-11-18 15:23:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:23:45,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 441.75) internal successors, (1767), 4 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4361 [2024-11-18 15:23:45,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:23:45,999 INFO L225 Difference]: With dead ends: 5187 [2024-11-18 15:23:45,999 INFO L226 Difference]: Without dead ends: 5166 [2024-11-18 15:23:46,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4366 GetRequests, 4360 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:23:46,001 INFO L432 NwaCegarLoop]: 8517 mSDtfsCounter, 9 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25538 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:23:46,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25538 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:23:46,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2024-11-18 15:23:46,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 5166. [2024-11-18 15:23:46,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 4644 states have (on average 1.6173557278208441) internal successors, (7511), 4644 states have internal predecessors, (7511), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520) [2024-11-18 15:23:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 8551 transitions. [2024-11-18 15:23:46,179 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 8551 transitions. Word has length 4361 [2024-11-18 15:23:46,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:23:46,183 INFO L471 AbstractCegarLoop]: Abstraction has 5166 states and 8551 transitions. [2024-11-18 15:23:46,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 441.75) internal successors, (1767), 4 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:46,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 8551 transitions. [2024-11-18 15:23:46,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4362 [2024-11-18 15:23:46,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:46,386 INFO L215 NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:46,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 15:23:46,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:46,588 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:46,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:46,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1716649396, now seen corresponding path program 1 times [2024-11-18 15:23:46,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:46,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771510981] [2024-11-18 15:23:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:46,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked. [2024-11-18 15:23:49,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:23:49,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771510981] [2024-11-18 15:23:49,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771510981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:23:49,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611923828] [2024-11-18 15:23:49,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:49,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:49,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:49,763 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:23:49,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 15:23:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:51,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 9525 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:23:51,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:23:51,311 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 2076 proven. 0 refuted. 0 times theorem prover too weak. 537684 trivial. 0 not checked. [2024-11-18 15:23:51,311 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:23:51,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611923828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:23:51,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:23:51,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 15:23:51,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829724765] [2024-11-18 15:23:51,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:23:51,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:23:51,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:23:51,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:23:51,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:23:51,318 INFO L87 Difference]: Start difference. First operand 5166 states and 8551 transitions. Second operand has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:23:51,370 INFO L93 Difference]: Finished difference Result 5184 states and 8573 transitions. [2024-11-18 15:23:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:23:51,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4361 [2024-11-18 15:23:51,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:23:51,386 INFO L225 Difference]: With dead ends: 5184 [2024-11-18 15:23:51,387 INFO L226 Difference]: Without dead ends: 5167 [2024-11-18 15:23:51,389 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4366 GetRequests, 4361 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:23:51,390 INFO L432 NwaCegarLoop]: 8520 mSDtfsCounter, 0 mSDsluCounter, 8511 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17031 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:23:51,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17031 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:23:51,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states. [2024-11-18 15:23:51,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 5167. [2024-11-18 15:23:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 4645 states have (on average 1.6170075349838535) internal successors, (7511), 4645 states have internal predecessors, (7511), 520 states have call successors, (520), 1 states have call predecessors, (520), 1 states have return successors, (520), 520 states have call predecessors, (520), 520 states have call successors, (520) [2024-11-18 15:23:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 8551 transitions. [2024-11-18 15:23:51,606 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 8551 transitions. Word has length 4361 [2024-11-18 15:23:51,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:23:51,609 INFO L471 AbstractCegarLoop]: Abstraction has 5167 states and 8551 transitions. [2024-11-18 15:23:51,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.0) internal successors, (1767), 3 states have internal predecessors, (1767), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:23:51,610 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 8551 transitions. [2024-11-18 15:23:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4363 [2024-11-18 15:23:51,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:51,683 INFO L215 NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:51,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-18 15:23:51,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:51,885 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:51,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash 248689411, now seen corresponding path program 1 times [2024-11-18 15:23:51,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:51,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642393797] [2024-11-18 15:23:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:51,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked. [2024-11-18 15:23:55,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:23:55,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642393797] [2024-11-18 15:23:55,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642393797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:23:55,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995965643] [2024-11-18 15:23:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:55,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:55,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:55,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:23:55,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 15:23:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:56,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 9528 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:23:56,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:24:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 2076 proven. 0 refuted. 0 times theorem prover too weak. 537684 trivial. 0 not checked. [2024-11-18 15:24:00,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:24:00,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995965643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:24:00,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:24:00,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-18 15:24:00,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741271995] [2024-11-18 15:24:00,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:24:00,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:24:00,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:24:00,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:24:00,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:24:00,304 INFO L87 Difference]: Start difference. First operand 5167 states and 8551 transitions. Second operand has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 3 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 3 states have call predecessors, (520), 3 states have call successors, (520) [2024-11-18 15:24:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:24:00,444 INFO L93 Difference]: Finished difference Result 14262 states and 23603 transitions. [2024-11-18 15:24:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:24:00,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 3 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 3 states have call predecessors, (520), 3 states have call successors, (520) Word has length 4362 [2024-11-18 15:24:00,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:24:00,469 INFO L225 Difference]: With dead ends: 14262 [2024-11-18 15:24:00,470 INFO L226 Difference]: Without dead ends: 9706 [2024-11-18 15:24:00,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4367 GetRequests, 4362 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 15:24:00,478 INFO L432 NwaCegarLoop]: 12521 mSDtfsCounter, 5707 mSDsluCounter, 8547 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5707 SdHoareTripleChecker+Valid, 21068 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:24:00,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5707 Valid, 21068 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:24:00,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9706 states. [2024-11-18 15:24:00,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9706 to 9706. [2024-11-18 15:24:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9706 states, 9055 states have (on average 1.6310325786858089) internal successors, (14769), 9055 states have internal predecessors, (14769), 649 states have call successors, (649), 1 states have call predecessors, (649), 1 states have return successors, (649), 649 states have call predecessors, (649), 649 states have call successors, (649) [2024-11-18 15:24:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9706 states to 9706 states and 16067 transitions. [2024-11-18 15:24:00,756 INFO L78 Accepts]: Start accepts. Automaton has 9706 states and 16067 transitions. Word has length 4362 [2024-11-18 15:24:00,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:24:00,759 INFO L471 AbstractCegarLoop]: Abstraction has 9706 states and 16067 transitions. [2024-11-18 15:24:00,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 589.3333333333334) internal successors, (1768), 3 states have internal predecessors, (1768), 3 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 3 states have call predecessors, (520), 3 states have call successors, (520) [2024-11-18 15:24:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 9706 states and 16067 transitions. [2024-11-18 15:24:00,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4363 [2024-11-18 15:24:00,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:24:00,891 INFO L215 NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:24:00,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 15:24:01,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-18 15:24:01,092 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:24:01,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:24:01,094 INFO L85 PathProgramCache]: Analyzing trace with hash 324884239, now seen corresponding path program 1 times [2024-11-18 15:24:01,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:24:01,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348157157] [2024-11-18 15:24:01,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:24:01,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:24:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:24:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 1170 proven. 387 refuted. 0 times theorem prover too weak. 538203 trivial. 0 not checked. [2024-11-18 15:24:04,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:24:04,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348157157] [2024-11-18 15:24:04,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348157157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:24:04,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476373562] [2024-11-18 15:24:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:24:04,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:24:04,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:24:04,769 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:24:04,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 15:24:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:24:06,148 INFO L255 TraceCheckSpWp]: Trace formula consists of 9528 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 15:24:06,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:24:06,530 INFO L134 CoverageAnalysis]: Checked inductivity of 539760 backedges. 2076 proven. 0 refuted. 0 times theorem prover too weak. 537684 trivial. 0 not checked. [2024-11-18 15:24:06,531 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:24:06,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476373562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:24:06,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:24:06,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-18 15:24:06,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684436568] [2024-11-18 15:24:06,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:24:06,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:24:06,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:24:06,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:24:06,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:24:06,537 INFO L87 Difference]: Start difference. First operand 9706 states and 16067 transitions. Second operand has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:24:06,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:24:06,627 INFO L93 Difference]: Finished difference Result 9774 states and 16168 transitions. [2024-11-18 15:24:06,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:24:06,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) Word has length 4362 [2024-11-18 15:24:06,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:24:06,653 INFO L225 Difference]: With dead ends: 9774 [2024-11-18 15:24:06,653 INFO L226 Difference]: Without dead ends: 9723 [2024-11-18 15:24:06,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4367 GetRequests, 4361 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:24:06,658 INFO L432 NwaCegarLoop]: 8517 mSDtfsCounter, 9 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25538 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:24:06,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25538 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:24:06,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9723 states. [2024-11-18 15:24:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9723 to 9723. [2024-11-18 15:24:06,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9723 states, 9072 states have (on average 1.630731922398589) internal successors, (14794), 9072 states have internal predecessors, (14794), 649 states have call successors, (649), 1 states have call predecessors, (649), 1 states have return successors, (649), 649 states have call predecessors, (649), 649 states have call successors, (649) [2024-11-18 15:24:06,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9723 states to 9723 states and 16092 transitions. [2024-11-18 15:24:06,920 INFO L78 Accepts]: Start accepts. Automaton has 9723 states and 16092 transitions. Word has length 4362 [2024-11-18 15:24:06,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:24:06,922 INFO L471 AbstractCegarLoop]: Abstraction has 9723 states and 16092 transitions. [2024-11-18 15:24:06,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 2 states have call successors, (520), 2 states have call predecessors, (520), 2 states have return successors, (520), 2 states have call predecessors, (520), 2 states have call successors, (520) [2024-11-18 15:24:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 9723 states and 16092 transitions. [2024-11-18 15:24:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4363 [2024-11-18 15:24:07,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:24:07,066 INFO L215 NwaCegarLoop]: trace histogram [520, 520, 520, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:24:07,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-18 15:24:07,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:24:07,268 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:24:07,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:24:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1308980457, now seen corresponding path program 1 times [2024-11-18 15:24:07,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:24:07,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473057625] [2024-11-18 15:24:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:24:07,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:24:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat