./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array18_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array18_pattern.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 4d58909a91b196e39d7623dd2e1e4d9b2698d6fa8ff06c2897eb5762e2e2e408 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-10 22:13:21,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-10 22:13:21,430 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-10 22:13:21,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-10 22:13:21,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-10 22:13:21,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-10 22:13:21,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-10 22:13:21,473 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-10 22:13:21,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-10 22:13:21,474 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-10 22:13:21,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-10 22:13:21,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-10 22:13:21,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-10 22:13:21,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-10 22:13:21,477 INFO L153 SettingsManager]: * Use SBE=true [2024-10-10 22:13:21,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-10 22:13:21,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-10 22:13:21,481 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-10 22:13:21,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-10 22:13:21,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-10 22:13:21,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-10 22:13:21,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-10 22:13:21,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-10 22:13:21,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-10 22:13:21,487 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-10 22:13:21,487 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-10 22:13:21,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-10 22:13:21,487 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-10 22:13:21,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-10 22:13:21,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-10 22:13:21,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-10 22:13:21,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-10 22:13:21,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:13:21,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-10 22:13:21,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-10 22:13:21,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-10 22:13:21,490 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-10 22:13:21,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-10 22:13:21,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-10 22:13:21,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-10 22:13:21,492 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-10 22:13:21,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-10 22:13:21,493 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d58909a91b196e39d7623dd2e1e4d9b2698d6fa8ff06c2897eb5762e2e2e408 [2024-10-10 22:13:21,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-10 22:13:21,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-10 22:13:21,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-10 22:13:21,766 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-10 22:13:21,766 INFO L274 PluginConnector]: CDTParser initialized [2024-10-10 22:13:21,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array18_pattern.c [2024-10-10 22:13:23,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-10 22:13:23,425 INFO L384 CDTParser]: Found 1 translation units. [2024-10-10 22:13:23,426 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array18_pattern.c [2024-10-10 22:13:23,433 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5b26b1147/4e2cea4f7e774bf5a5b5879b3f658d15/FLAGcd5dbbd76 [2024-10-10 22:13:23,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/5b26b1147/4e2cea4f7e774bf5a5b5879b3f658d15 [2024-10-10 22:13:23,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-10 22:13:23,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-10 22:13:23,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-10 22:13:23,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-10 22:13:23,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-10 22:13:23,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc1411c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23, skipping insertion in model container [2024-10-10 22:13:23,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,480 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-10 22:13:23,665 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array18_pattern.c[1444,1457] [2024-10-10 22:13:23,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:13:23,709 INFO L200 MainTranslator]: Completed pre-run [2024-10-10 22:13:23,722 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array18_pattern.c[1444,1457] [2024-10-10 22:13:23,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-10 22:13:23,762 INFO L204 MainTranslator]: Completed translation [2024-10-10 22:13:23,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23 WrapperNode [2024-10-10 22:13:23,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-10 22:13:23,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-10 22:13:23,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-10 22:13:23,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-10 22:13:23,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,799 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2024-10-10 22:13:23,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-10 22:13:23,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-10 22:13:23,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-10 22:13:23,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-10 22:13:23,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,815 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,829 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-10 22:13:23,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,847 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-10 22:13:23,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-10 22:13:23,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-10 22:13:23,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-10 22:13:23,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (1/1) ... [2024-10-10 22:13:23,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-10 22:13:23,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:13:23,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-10 22:13:23,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-10 22:13:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-10 22:13:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-10 22:13:23,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-10 22:13:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-10 22:13:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-10 22:13:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-10 22:13:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-10 22:13:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-10 22:13:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-10 22:13:23,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-10 22:13:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-10 22:13:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-10 22:13:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-10 22:13:24,025 INFO L238 CfgBuilder]: Building ICFG [2024-10-10 22:13:24,027 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-10 22:13:24,253 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-10-10 22:13:24,254 INFO L287 CfgBuilder]: Performing block encoding [2024-10-10 22:13:24,296 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-10 22:13:24,296 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-10 22:13:24,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:13:24 BoogieIcfgContainer [2024-10-10 22:13:24,297 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-10 22:13:24,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-10 22:13:24,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-10 22:13:24,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-10 22:13:24,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 10:13:23" (1/3) ... [2024-10-10 22:13:24,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba6e236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:13:24, skipping insertion in model container [2024-10-10 22:13:24,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 10:13:23" (2/3) ... [2024-10-10 22:13:24,307 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba6e236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 10:13:24, skipping insertion in model container [2024-10-10 22:13:24,307 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 10:13:24" (3/3) ... [2024-10-10 22:13:24,308 INFO L112 eAbstractionObserver]: Analyzing ICFG array18_pattern.c [2024-10-10 22:13:24,324 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-10 22:13:24,325 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-10 22:13:24,392 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-10 22:13:24,402 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;@75537245, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-10 22:13:24,403 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-10 22:13:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 22:13:24,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-10 22:13:24,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:13:24,416 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:13:24,417 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:13:24,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:13:24,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1876061686, now seen corresponding path program 1 times [2024-10-10 22:13:24,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:13:24,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959835898] [2024-10-10 22:13:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:13:24,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:13:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:24,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:13:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:24,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-10 22:13:24,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:13:24,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959835898] [2024-10-10 22:13:24,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959835898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:13:24,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:13:24,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-10 22:13:24,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446759110] [2024-10-10 22:13:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:13:24,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-10 22:13:24,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:13:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-10 22:13:24,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:13:24,619 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 23 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-10 22:13:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:13:24,647 INFO L93 Difference]: Finished difference Result 54 states and 88 transitions. [2024-10-10 22:13:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-10 22:13:24,649 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-10-10 22:13:24,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:13:24,654 INFO L225 Difference]: With dead ends: 54 [2024-10-10 22:13:24,654 INFO L226 Difference]: Without dead ends: 26 [2024-10-10 22:13:24,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-10 22:13:24,660 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:13:24,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:13:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-10 22:13:24,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-10 22:13:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 22:13:24,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2024-10-10 22:13:24,697 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 14 [2024-10-10 22:13:24,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:13:24,697 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2024-10-10 22:13:24,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-10 22:13:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2024-10-10 22:13:24,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-10 22:13:24,699 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:13:24,699 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:13:24,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-10 22:13:24,700 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:13:24,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:13:24,701 INFO L85 PathProgramCache]: Analyzing trace with hash -364244922, now seen corresponding path program 1 times [2024-10-10 22:13:24,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:13:24,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750044999] [2024-10-10 22:13:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:13:24,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:13:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:13:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-10 22:13:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-10 22:13:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:13:25,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:13:25,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750044999] [2024-10-10 22:13:25,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750044999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:13:25,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:13:25,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 22:13:25,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481087308] [2024-10-10 22:13:25,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:13:25,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:13:25,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:13:25,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:13:25,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:13:25,103 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:13:25,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:13:25,134 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2024-10-10 22:13:25,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:13:25,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-10-10 22:13:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:13:25,137 INFO L225 Difference]: With dead ends: 33 [2024-10-10 22:13:25,137 INFO L226 Difference]: Without dead ends: 29 [2024-10-10 22:13:25,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:13:25,139 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:13:25,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:13:25,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-10 22:13:25,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-10-10 22:13:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 22:13:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2024-10-10 22:13:25,153 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 29 [2024-10-10 22:13:25,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:13:25,155 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2024-10-10 22:13:25,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:13:25,156 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2024-10-10 22:13:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-10-10 22:13:25,158 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:13:25,158 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:13:25,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-10 22:13:25,159 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:13:25,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:13:25,161 INFO L85 PathProgramCache]: Analyzing trace with hash -315688640, now seen corresponding path program 1 times [2024-10-10 22:13:25,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:13:25,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008156493] [2024-10-10 22:13:25,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:13:25,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:13:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:13:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-10 22:13:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-10 22:13:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-10 22:13:25,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:13:25,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008156493] [2024-10-10 22:13:25,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008156493] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:13:25,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:13:25,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-10 22:13:25,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502131169] [2024-10-10 22:13:25,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:13:25,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-10 22:13:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:13:25,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-10 22:13:25,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:13:25,356 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:13:25,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:13:25,474 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2024-10-10 22:13:25,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-10 22:13:25,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-10-10 22:13:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:13:25,483 INFO L225 Difference]: With dead ends: 61 [2024-10-10 22:13:25,483 INFO L226 Difference]: Without dead ends: 37 [2024-10-10 22:13:25,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-10 22:13:25,484 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:13:25,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 64 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:13:25,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-10 22:13:25,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2024-10-10 22:13:25,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 22:13:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2024-10-10 22:13:25,498 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 33 [2024-10-10 22:13:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:13:25,499 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2024-10-10 22:13:25,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:13:25,499 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-10-10 22:13:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-10 22:13:25,501 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:13:25,501 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:13:25,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-10 22:13:25,502 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:13:25,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:13:25,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1044441326, now seen corresponding path program 1 times [2024-10-10 22:13:25,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:13:25,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398343418] [2024-10-10 22:13:25,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:13:25,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:13:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:13:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-10 22:13:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-10 22:13:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-10 22:13:25,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:13:25,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398343418] [2024-10-10 22:13:25,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398343418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-10 22:13:25,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-10 22:13:25,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-10 22:13:25,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913102711] [2024-10-10 22:13:25,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-10 22:13:25,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-10 22:13:25,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:13:25,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-10 22:13:25,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:13:25,628 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:13:25,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:13:25,675 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2024-10-10 22:13:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-10 22:13:25,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-10-10 22:13:25,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:13:25,677 INFO L225 Difference]: With dead ends: 60 [2024-10-10 22:13:25,679 INFO L226 Difference]: Without dead ends: 34 [2024-10-10 22:13:25,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-10 22:13:25,681 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-10 22:13:25,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 50 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-10 22:13:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-10 22:13:25,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2024-10-10 22:13:25,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 22:13:25,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2024-10-10 22:13:25,691 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 36 [2024-10-10 22:13:25,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:13:25,691 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2024-10-10 22:13:25,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:13:25,692 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2024-10-10 22:13:25,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-10 22:13:25,693 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:13:25,694 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:13:25,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-10 22:13:25,694 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:13:25,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:13:25,695 INFO L85 PathProgramCache]: Analyzing trace with hash -313799821, now seen corresponding path program 1 times [2024-10-10 22:13:25,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:13:25,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492181717] [2024-10-10 22:13:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:13:25,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:13:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-10 22:13:25,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33514899] [2024-10-10 22:13:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:13:25,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:13:25,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:13:25,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:13:25,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-10 22:13:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:25,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-10 22:13:25,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:13:26,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-10 22:13:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:13:26,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:13:26,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2024-10-10 22:13:26,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:13:26,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 160 [2024-10-10 22:13:26,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:13:26,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 330 treesize of output 323 [2024-10-10 22:13:58,708 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-10-10 22:13:58,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:13:58,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492181717] [2024-10-10 22:13:58,714 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-10 22:13:58,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33514899] [2024-10-10 22:13:58,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33514899] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:13:58,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-10 22:13:58,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-10-10 22:13:58,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773346203] [2024-10-10 22:13:58,714 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-10 22:13:58,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-10 22:13:58,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:13:58,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-10 22:13:58,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2024-10-10 22:13:58,719 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 18 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:13:59,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:13:59,428 INFO L93 Difference]: Finished difference Result 105 states and 136 transitions. [2024-10-10 22:13:59,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-10 22:13:59,429 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 18 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-10-10 22:13:59,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:13:59,431 INFO L225 Difference]: With dead ends: 105 [2024-10-10 22:13:59,431 INFO L226 Difference]: Without dead ends: 78 [2024-10-10 22:13:59,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=291, Invalid=1689, Unknown=0, NotChecked=0, Total=1980 [2024-10-10 22:13:59,433 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 98 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-10 22:13:59,433 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 154 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-10 22:13:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-10-10 22:13:59,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2024-10-10 22:13:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-10 22:13:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2024-10-10 22:13:59,445 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 37 [2024-10-10 22:13:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:13:59,445 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2024-10-10 22:13:59,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 18 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-10 22:13:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2024-10-10 22:13:59,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-10 22:13:59,447 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:13:59,447 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:13:59,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-10 22:13:59,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:13:59,648 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:13:59,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:13:59,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1066751633, now seen corresponding path program 1 times [2024-10-10 22:13:59,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:13:59,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937114016] [2024-10-10 22:13:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:13:59,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:13:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:59,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:13:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:59,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 22:13:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:59,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-10 22:13:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:13:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-10 22:13:59,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:13:59,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937114016] [2024-10-10 22:13:59,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937114016] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:13:59,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512390764] [2024-10-10 22:13:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:13:59,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:13:59,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:13:59,968 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:13:59,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-10 22:14:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:00,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-10 22:14:00,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:14:00,180 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-10 22:14:00,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:14:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-10 22:14:00,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512390764] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:14:00,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:14:00,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 23 [2024-10-10 22:14:00,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431803676] [2024-10-10 22:14:00,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:14:00,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-10 22:14:00,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:14:00,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-10 22:14:00,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-10-10 22:14:00,430 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 23 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-10-10 22:14:00,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:14:00,816 INFO L93 Difference]: Finished difference Result 146 states and 181 transitions. [2024-10-10 22:14:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-10 22:14:00,818 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 37 [2024-10-10 22:14:00,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:14:00,820 INFO L225 Difference]: With dead ends: 146 [2024-10-10 22:14:00,820 INFO L226 Difference]: Without dead ends: 102 [2024-10-10 22:14:00,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2024-10-10 22:14:00,824 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 133 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:14:00,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 189 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:14:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-10 22:14:00,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 76. [2024-10-10 22:14:00,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 66 states have internal predecessors, (83), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-10 22:14:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2024-10-10 22:14:00,848 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 37 [2024-10-10 22:14:00,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:14:00,850 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2024-10-10 22:14:00,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-10-10 22:14:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2024-10-10 22:14:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-10-10 22:14:00,852 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:14:00,852 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:14:00,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-10 22:14:01,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:14:01,056 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:14:01,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:14:01,056 INFO L85 PathProgramCache]: Analyzing trace with hash -957259103, now seen corresponding path program 2 times [2024-10-10 22:14:01,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:14:01,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083389012] [2024-10-10 22:14:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:14:01,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:14:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:01,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:14:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:01,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 22:14:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:01,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-10 22:14:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:14:01,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:14:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083389012] [2024-10-10 22:14:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083389012] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:14:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906044147] [2024-10-10 22:14:01,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-10 22:14:01,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:14:01,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:14:01,176 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:14:01,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-10 22:14:01,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-10 22:14:01,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:14:01,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 22:14:01,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:14:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-10 22:14:01,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:14:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-10 22:14:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906044147] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:14:01,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:14:01,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-10 22:14:01,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999438700] [2024-10-10 22:14:01,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:14:01,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-10 22:14:01,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:14:01,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-10 22:14:01,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-10-10 22:14:01,430 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 22:14:01,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:14:01,859 INFO L93 Difference]: Finished difference Result 166 states and 215 transitions. [2024-10-10 22:14:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-10 22:14:01,860 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-10-10 22:14:01,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:14:01,862 INFO L225 Difference]: With dead ends: 166 [2024-10-10 22:14:01,862 INFO L226 Difference]: Without dead ends: 103 [2024-10-10 22:14:01,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2024-10-10 22:14:01,863 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 60 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-10 22:14:01,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 174 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-10 22:14:01,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-10 22:14:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2024-10-10 22:14:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 86 states have (on average 1.2790697674418605) internal successors, (110), 87 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-10 22:14:01,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2024-10-10 22:14:01,887 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 38 [2024-10-10 22:14:01,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:14:01,888 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2024-10-10 22:14:01,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 22:14:01,889 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2024-10-10 22:14:01,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-10 22:14:01,892 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:14:01,892 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:14:01,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-10 22:14:02,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:14:02,093 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:14:02,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:14:02,094 INFO L85 PathProgramCache]: Analyzing trace with hash -715827731, now seen corresponding path program 3 times [2024-10-10 22:14:02,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:14:02,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103796290] [2024-10-10 22:14:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:14:02,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:14:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:02,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:14:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:02,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-10 22:14:02,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:02,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-10 22:14:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-10 22:14:02,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:14:02,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103796290] [2024-10-10 22:14:02,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103796290] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:14:02,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418196056] [2024-10-10 22:14:02,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-10 22:14:02,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:14:02,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:14:02,221 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:14:02,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-10 22:14:02,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-10 22:14:02,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:14:02,443 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 22:14:02,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:14:02,494 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-10 22:14:02,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:14:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-10 22:14:02,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418196056] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:14:02,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:14:02,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-10-10 22:14:02,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70730656] [2024-10-10 22:14:02,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:14:02,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-10 22:14:02,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:14:02,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-10 22:14:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-10 22:14:02,562 INFO L87 Difference]: Start difference. First operand 97 states and 122 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 22:14:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:14:02,800 INFO L93 Difference]: Finished difference Result 133 states and 160 transitions. [2024-10-10 22:14:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-10 22:14:02,801 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2024-10-10 22:14:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:14:02,802 INFO L225 Difference]: With dead ends: 133 [2024-10-10 22:14:02,802 INFO L226 Difference]: Without dead ends: 66 [2024-10-10 22:14:02,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2024-10-10 22:14:02,803 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:14:02,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 169 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:14:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-10-10 22:14:02,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2024-10-10 22:14:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 22:14:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2024-10-10 22:14:02,813 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 41 [2024-10-10 22:14:02,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:14:02,813 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2024-10-10 22:14:02,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 22:14:02,814 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2024-10-10 22:14:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-10 22:14:02,814 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:14:02,814 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:14:02,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-10 22:14:03,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-10 22:14:03,016 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:14:03,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:14:03,016 INFO L85 PathProgramCache]: Analyzing trace with hash -47121920, now seen corresponding path program 4 times [2024-10-10 22:14:03,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:14:03,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456995949] [2024-10-10 22:14:03,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:14:03,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:14:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:03,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-10 22:14:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:03,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-10 22:14:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:03,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-10 22:14:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-10 22:14:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-10 22:14:03,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-10 22:14:03,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456995949] [2024-10-10 22:14:03,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456995949] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-10 22:14:03,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917936006] [2024-10-10 22:14:03,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-10 22:14:03,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:14:03,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:14:03,124 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:14:03,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-10 22:14:03,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-10 22:14:03,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:14:03,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-10 22:14:03,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:14:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-10 22:14:03,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-10 22:14:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-10 22:14:03,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917936006] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-10 22:14:03,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-10 22:14:03,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-10 22:14:03,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081836710] [2024-10-10 22:14:03,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-10 22:14:03,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-10 22:14:03,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-10 22:14:03,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-10 22:14:03,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-10-10 22:14:03,324 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 22:14:03,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-10 22:14:03,397 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2024-10-10 22:14:03,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-10 22:14:03,398 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-10-10 22:14:03,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-10 22:14:03,398 INFO L225 Difference]: With dead ends: 66 [2024-10-10 22:14:03,398 INFO L226 Difference]: Without dead ends: 60 [2024-10-10 22:14:03,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-10 22:14:03,399 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-10 22:14:03,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 85 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-10 22:14:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-10-10 22:14:03,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-10 22:14:03,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 54 states have internal predecessors, (67), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-10 22:14:03,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2024-10-10 22:14:03,414 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 43 [2024-10-10 22:14:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-10 22:14:03,414 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2024-10-10 22:14:03,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-10 22:14:03,415 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2024-10-10 22:14:03,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-10 22:14:03,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-10 22:14:03,415 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-10 22:14:03,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-10 22:14:03,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:14:03,616 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-10 22:14:03,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-10 22:14:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1854788154, now seen corresponding path program 5 times [2024-10-10 22:14:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-10 22:14:03,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511908213] [2024-10-10 22:14:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-10 22:14:03,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-10 22:14:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-10 22:14:03,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952804060] [2024-10-10 22:14:03,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-10 22:14:03,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-10 22:14:03,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-10 22:14:03,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-10 22:14:03,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-10 22:14:04,205 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-10-10 22:14:04,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-10 22:14:04,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-10-10 22:14:04,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-10 22:14:04,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-10 22:14:04,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-10 22:14:04,480 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:14:04,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-10 22:14:04,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:14:04,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-10 22:14:05,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,271 INFO L349 Elim1Store]: treesize reduction 128, result has 29.3 percent of original size [2024-10-10 22:14:05,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 32 case distinctions, treesize of input 74 treesize of output 120 [2024-10-10 22:14:05,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 100 [2024-10-10 22:14:05,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,581 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2024-10-10 22:14:05,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 17 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 100 treesize of output 199 [2024-10-10 22:14:05,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:05,937 INFO L349 Elim1Store]: treesize reduction 128, result has 24.7 percent of original size [2024-10-10 22:14:05,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 30 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 7 case distinctions, treesize of input 147 treesize of output 286 [2024-10-10 22:14:06,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:06,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:06,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:06,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:06,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:06,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:06,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:06,262 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:14:06,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:06,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:06,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:06,279 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-10 22:14:06,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-10 22:14:06,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 23 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 54 [2024-10-10 22:14:07,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-10 22:14:07,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 126 treesize of output 151 [2024-10-10 22:14:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-10 22:14:07,971 INFO L311 TraceCheckSpWp]: Computing backward predicates...