./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi01.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/recursive/recHanoi01.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 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 03:02:03,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 03:02:03,729 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 03:02:03,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 03:02:03,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 03:02:03,757 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 03:02:03,758 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 03:02:03,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 03:02:03,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 03:02:03,761 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 03:02:03,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 03:02:03,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 03:02:03,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 03:02:03,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 03:02:03,764 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 03:02:03,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 03:02:03,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 03:02:03,765 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 03:02:03,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 03:02:03,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 03:02:03,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 03:02:03,767 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 03:02:03,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 03:02:03,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 03:02:03,771 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 03:02:03,772 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 03:02:03,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 03:02:03,772 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 03:02:03,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 03:02:03,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 03:02:03,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 03:02:03,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 03:02:03,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:02:03,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 03:02:03,774 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 03:02:03,774 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 03:02:03,774 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 03:02:03,775 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 03:02:03,776 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 03:02:03,776 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 03:02:03,776 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 03:02:03,777 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 03:02:03,777 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 [2024-10-11 03:02:04,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 03:02:04,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 03:02:04,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 03:02:04,083 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 03:02:04,084 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 03:02:04,085 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi01.c [2024-10-11 03:02:05,550 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 03:02:05,730 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 03:02:05,731 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi01.c [2024-10-11 03:02:05,739 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1b7d136a1/2595d14ffba14ad894d8e1d918724d1e/FLAGd2d269cab [2024-10-11 03:02:06,131 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/1b7d136a1/2595d14ffba14ad894d8e1d918724d1e [2024-10-11 03:02:06,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 03:02:06,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 03:02:06,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 03:02:06,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 03:02:06,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 03:02:06,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798a19f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06, skipping insertion in model container [2024-10-11 03:02:06,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,169 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 03:02:06,341 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/recursive/recHanoi01.c[1213,1226] [2024-10-11 03:02:06,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:02:06,353 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 03:02:06,369 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/recursive/recHanoi01.c[1213,1226] [2024-10-11 03:02:06,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:02:06,384 INFO L204 MainTranslator]: Completed translation [2024-10-11 03:02:06,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06 WrapperNode [2024-10-11 03:02:06,385 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 03:02:06,386 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 03:02:06,386 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 03:02:06,386 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 03:02:06,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,397 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,409 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-10-11 03:02:06,410 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 03:02:06,410 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 03:02:06,410 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 03:02:06,410 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 03:02:06,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,419 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,431 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 03:02:06,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,437 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,438 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 03:02:06,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 03:02:06,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 03:02:06,441 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 03:02:06,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (1/1) ... [2024-10-11 03:02:06,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:02:06,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:06,470 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) [2024-10-11 03:02:06,472 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 [2024-10-11 03:02:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 03:02:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2024-10-11 03:02:06,510 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2024-10-11 03:02:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2024-10-11 03:02:06,510 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2024-10-11 03:02:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 03:02:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 03:02:06,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 03:02:06,567 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 03:02:06,568 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 03:02:06,674 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-11 03:02:06,676 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 03:02:06,700 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 03:02:06,701 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 03:02:06,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:02:06 BoogieIcfgContainer [2024-10-11 03:02:06,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 03:02:06,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 03:02:06,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 03:02:06,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 03:02:06,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:02:06" (1/3) ... [2024-10-11 03:02:06,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d8c71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:02:06, skipping insertion in model container [2024-10-11 03:02:06,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:02:06" (2/3) ... [2024-10-11 03:02:06,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d8c71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:02:06, skipping insertion in model container [2024-10-11 03:02:06,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:02:06" (3/3) ... [2024-10-11 03:02:06,713 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2024-10-11 03:02:06,729 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 03:02:06,729 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 03:02:06,779 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 03:02:06,786 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;@4bb762de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 03:02:06,786 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 03:02:06,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-11 03:02:06,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 03:02:06,795 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:06,796 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:06,796 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:06,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:06,800 INFO L85 PathProgramCache]: Analyzing trace with hash -432663240, now seen corresponding path program 1 times [2024-10-11 03:02:06,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:06,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878813955] [2024-10-11 03:02:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:06,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:07,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:07,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:02:07,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:07,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878813955] [2024-10-11 03:02:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878813955] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:02:07,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:02:07,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 03:02:07,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410078488] [2024-10-11 03:02:07,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:02:07,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 03:02:07,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 03:02:07,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 03:02:07,147 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:02:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:07,314 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2024-10-11 03:02:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 03:02:07,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-10-11 03:02:07,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:07,324 INFO L225 Difference]: With dead ends: 38 [2024-10-11 03:02:07,324 INFO L226 Difference]: Without dead ends: 22 [2024-10-11 03:02:07,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-11 03:02:07,329 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:07,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 39 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:02:07,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-11 03:02:07,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-11 03:02:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-11 03:02:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-10-11 03:02:07,368 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 15 [2024-10-11 03:02:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:07,368 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-10-11 03:02:07,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 03:02:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-10-11 03:02:07,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 03:02:07,370 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:07,371 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:07,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 03:02:07,371 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:07,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:07,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1422071395, now seen corresponding path program 1 times [2024-10-11 03:02:07,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:07,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039251938] [2024-10-11 03:02:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:07,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:07,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:07,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:07,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:07,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 03:02:07,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:07,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039251938] [2024-10-11 03:02:07,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039251938] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:07,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850852163] [2024-10-11 03:02:07,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:07,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:07,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:07,870 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) [2024-10-11 03:02:07,873 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 [2024-10-11 03:02:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:08,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-11 03:02:08,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 03:02:08,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 03:02:08,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850852163] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:08,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:08,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 17 [2024-10-11 03:02:08,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415957159] [2024-10-11 03:02:08,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:08,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 03:02:08,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:08,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 03:02:08,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-10-11 03:02:08,433 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-11 03:02:08,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:08,813 INFO L93 Difference]: Finished difference Result 73 states and 103 transitions. [2024-10-11 03:02:08,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 03:02:08,813 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 25 [2024-10-11 03:02:08,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:08,816 INFO L225 Difference]: With dead ends: 73 [2024-10-11 03:02:08,816 INFO L226 Difference]: Without dead ends: 67 [2024-10-11 03:02:08,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2024-10-11 03:02:08,818 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 66 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:08,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 100 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 03:02:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-11 03:02:08,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2024-10-11 03:02:08,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 14 states have call successors, (14), 6 states have call predecessors, (14), 11 states have return successors, (33), 16 states have call predecessors, (33), 14 states have call successors, (33) [2024-10-11 03:02:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2024-10-11 03:02:08,841 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 25 [2024-10-11 03:02:08,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:08,842 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2024-10-11 03:02:08,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 15 states have internal predecessors, (28), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2024-10-11 03:02:08,842 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2024-10-11 03:02:08,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-10-11 03:02:08,844 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:08,844 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:08,861 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 [2024-10-11 03:02:09,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:09,050 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:09,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:09,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1071008002, now seen corresponding path program 2 times [2024-10-11 03:02:09,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:09,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391904585] [2024-10-11 03:02:09,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:09,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:09,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:09,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:09,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:09,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:09,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:09,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-11 03:02:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:09,278 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 03:02:09,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:09,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391904585] [2024-10-11 03:02:09,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391904585] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:09,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240698476] [2024-10-11 03:02:09,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 03:02:09,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:09,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:09,281 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) [2024-10-11 03:02:09,282 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 [2024-10-11 03:02:09,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 03:02:09,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 03:02:09,363 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 03:02:09,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 03:02:09,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:09,929 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-11 03:02:09,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240698476] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:09,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:09,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 18 [2024-10-11 03:02:09,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889355877] [2024-10-11 03:02:09,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:09,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 03:02:09,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:09,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 03:02:09,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-10-11 03:02:09,932 INFO L87 Difference]: Start difference. First operand 56 states and 82 transitions. Second operand has 18 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2024-10-11 03:02:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:10,273 INFO L93 Difference]: Finished difference Result 107 states and 168 transitions. [2024-10-11 03:02:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 03:02:10,273 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 35 [2024-10-11 03:02:10,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:10,275 INFO L225 Difference]: With dead ends: 107 [2024-10-11 03:02:10,275 INFO L226 Difference]: Without dead ends: 73 [2024-10-11 03:02:10,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 69 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=695, Unknown=0, NotChecked=0, Total=870 [2024-10-11 03:02:10,281 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:10,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 98 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 03:02:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-10-11 03:02:10,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2024-10-11 03:02:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.121212121212121) internal successors, (37), 32 states have internal predecessors, (37), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2024-10-11 03:02:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2024-10-11 03:02:10,303 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2024-10-11 03:02:10,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:10,304 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2024-10-11 03:02:10,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2024-10-11 03:02:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2024-10-11 03:02:10,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-11 03:02:10,306 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:10,306 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:10,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 03:02:10,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:10,511 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:10,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:10,512 INFO L85 PathProgramCache]: Analyzing trace with hash -877477481, now seen corresponding path program 1 times [2024-10-11 03:02:10,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:10,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602777990] [2024-10-11 03:02:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:10,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:10,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:10,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:10,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:10,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:10,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 03:02:10,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:10,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602777990] [2024-10-11 03:02:10,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602777990] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:10,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123916889] [2024-10-11 03:02:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:10,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:10,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:10,730 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) [2024-10-11 03:02:10,732 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 [2024-10-11 03:02:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:10,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 03:02:10,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:10,858 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 03:02:10,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 03:02:11,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123916889] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:11,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:11,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 20 [2024-10-11 03:02:11,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826016660] [2024-10-11 03:02:11,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:11,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 03:02:11,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:11,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 03:02:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-10-11 03:02:11,147 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-11 03:02:11,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:11,344 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2024-10-11 03:02:11,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 03:02:11,345 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) Word has length 31 [2024-10-11 03:02:11,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:11,346 INFO L225 Difference]: With dead ends: 61 [2024-10-11 03:02:11,346 INFO L226 Difference]: Without dead ends: 49 [2024-10-11 03:02:11,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2024-10-11 03:02:11,347 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:11,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 62 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:02:11,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-11 03:02:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-10-11 03:02:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 29 states have (on average 1.103448275862069) internal successors, (32), 28 states have internal predecessors, (32), 10 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2024-10-11 03:02:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-10-11 03:02:11,367 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 31 [2024-10-11 03:02:11,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:11,368 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-10-11 03:02:11,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-11 03:02:11,368 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-10-11 03:02:11,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-11 03:02:11,369 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:11,369 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:11,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 03:02:11,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:11,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:11,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash -921128009, now seen corresponding path program 2 times [2024-10-11 03:02:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:11,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087734047] [2024-10-11 03:02:11,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:11,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:11,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:11,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:12,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:12,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:12,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:12,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:12,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:12,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:12,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:12,182 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-10-11 03:02:12,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087734047] [2024-10-11 03:02:12,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087734047] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128276684] [2024-10-11 03:02:12,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 03:02:12,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:12,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:12,185 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) [2024-10-11 03:02:12,187 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 [2024-10-11 03:02:12,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 03:02:12,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 03:02:12,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-11 03:02:12,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 03:02:12,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-11 03:02:12,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128276684] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:12,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:12,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 18] total 33 [2024-10-11 03:02:12,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72010550] [2024-10-11 03:02:12,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:12,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 03:02:12,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:12,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 03:02:12,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 03:02:12,965 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 33 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 26 states have internal predecessors, (47), 9 states have call successors, (17), 7 states have call predecessors, (17), 16 states have return successors, (22), 15 states have call predecessors, (22), 9 states have call successors, (22) [2024-10-11 03:02:13,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:13,865 INFO L93 Difference]: Finished difference Result 100 states and 138 transitions. [2024-10-11 03:02:13,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-11 03:02:13,865 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 26 states have internal predecessors, (47), 9 states have call successors, (17), 7 states have call predecessors, (17), 16 states have return successors, (22), 15 states have call predecessors, (22), 9 states have call successors, (22) Word has length 51 [2024-10-11 03:02:13,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:13,868 INFO L225 Difference]: With dead ends: 100 [2024-10-11 03:02:13,871 INFO L226 Difference]: Without dead ends: 96 [2024-10-11 03:02:13,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=429, Invalid=2651, Unknown=0, NotChecked=0, Total=3080 [2024-10-11 03:02:13,873 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 98 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:13,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 163 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 03:02:13,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-11 03:02:13,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 79. [2024-10-11 03:02:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 18 states have call successors, (18), 10 states have call predecessors, (18), 16 states have return successors, (44), 24 states have call predecessors, (44), 18 states have call successors, (44) [2024-10-11 03:02:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 110 transitions. [2024-10-11 03:02:13,910 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 110 transitions. Word has length 51 [2024-10-11 03:02:13,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:13,911 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 110 transitions. [2024-10-11 03:02:13,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 1.6206896551724137) internal successors, (47), 26 states have internal predecessors, (47), 9 states have call successors, (17), 7 states have call predecessors, (17), 16 states have return successors, (22), 15 states have call predecessors, (22), 9 states have call successors, (22) [2024-10-11 03:02:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 110 transitions. [2024-10-11 03:02:13,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-11 03:02:13,916 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:13,916 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:13,934 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 [2024-10-11 03:02:14,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:14,117 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:14,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:14,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1011273987, now seen corresponding path program 3 times [2024-10-11 03:02:14,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:14,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335121776] [2024-10-11 03:02:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:14,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:14,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:14,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:14,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:14,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:14,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:14,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:14,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:14,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:14,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:14,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 13 proven. 45 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-11 03:02:14,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:14,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335121776] [2024-10-11 03:02:14,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335121776] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:14,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204705695] [2024-10-11 03:02:14,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 03:02:14,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:14,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:14,391 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) [2024-10-11 03:02:14,392 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 [2024-10-11 03:02:14,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-11 03:02:14,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 03:02:14,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 03:02:14,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 41 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-10-11 03:02:14,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 41 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 03:02:15,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204705695] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:15,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:15,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2024-10-11 03:02:15,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081096462] [2024-10-11 03:02:15,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:15,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 03:02:15,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:15,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 03:02:15,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-10-11 03:02:15,092 INFO L87 Difference]: Start difference. First operand 79 states and 110 transitions. Second operand has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2024-10-11 03:02:15,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:15,436 INFO L93 Difference]: Finished difference Result 141 states and 219 transitions. [2024-10-11 03:02:15,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 03:02:15,436 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) Word has length 57 [2024-10-11 03:02:15,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:15,438 INFO L225 Difference]: With dead ends: 141 [2024-10-11 03:02:15,440 INFO L226 Difference]: Without dead ends: 75 [2024-10-11 03:02:15,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 112 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=241, Invalid=1091, Unknown=0, NotChecked=0, Total=1332 [2024-10-11 03:02:15,442 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:15,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 109 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 03:02:15,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-11 03:02:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2024-10-11 03:02:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 17 states have call successors, (17), 8 states have call predecessors, (17), 12 states have return successors, (35), 21 states have call predecessors, (35), 17 states have call successors, (35) [2024-10-11 03:02:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 89 transitions. [2024-10-11 03:02:15,459 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 89 transitions. Word has length 57 [2024-10-11 03:02:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:15,459 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 89 transitions. [2024-10-11 03:02:15,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2024-10-11 03:02:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2024-10-11 03:02:15,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-11 03:02:15,462 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:15,462 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 6, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:15,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 03:02:15,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:15,663 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:15,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:15,664 INFO L85 PathProgramCache]: Analyzing trace with hash 656684695, now seen corresponding path program 4 times [2024-10-11 03:02:15,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:15,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729662541] [2024-10-11 03:02:15,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:15,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-11 03:02:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 71 proven. 69 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-10-11 03:02:15,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:15,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729662541] [2024-10-11 03:02:15,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729662541] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:15,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277318742] [2024-10-11 03:02:15,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 03:02:15,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:15,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:15,971 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) [2024-10-11 03:02:15,973 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 [2024-10-11 03:02:16,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 03:02:16,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 03:02:16,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 03:02:16,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 74 proven. 70 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-10-11 03:02:16,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 74 proven. 75 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-10-11 03:02:16,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277318742] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:16,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:16,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 13] total 19 [2024-10-11 03:02:16,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668636355] [2024-10-11 03:02:16,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:16,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 03:02:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:16,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 03:02:16,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-10-11 03:02:16,647 INFO L87 Difference]: Start difference. First operand 65 states and 89 transitions. Second operand has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (24), 3 states have call predecessors, (24), 8 states have return successors, (21), 6 states have call predecessors, (21), 12 states have call successors, (21) [2024-10-11 03:02:16,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:16,894 INFO L93 Difference]: Finished difference Result 118 states and 175 transitions. [2024-10-11 03:02:16,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 03:02:16,894 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (24), 3 states have call predecessors, (24), 8 states have return successors, (21), 6 states have call predecessors, (21), 12 states have call successors, (21) Word has length 71 [2024-10-11 03:02:16,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:16,896 INFO L225 Difference]: With dead ends: 118 [2024-10-11 03:02:16,896 INFO L226 Difference]: Without dead ends: 72 [2024-10-11 03:02:16,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 152 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=258, Invalid=734, Unknown=0, NotChecked=0, Total=992 [2024-10-11 03:02:16,898 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:16,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 58 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:02:16,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-11 03:02:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2024-10-11 03:02:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 17 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (31), 18 states have call predecessors, (31), 17 states have call successors, (31) [2024-10-11 03:02:16,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 84 transitions. [2024-10-11 03:02:16,917 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 84 transitions. Word has length 71 [2024-10-11 03:02:16,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:16,918 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 84 transitions. [2024-10-11 03:02:16,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 12 states have call successors, (24), 3 states have call predecessors, (24), 8 states have return successors, (21), 6 states have call predecessors, (21), 12 states have call successors, (21) [2024-10-11 03:02:16,919 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 84 transitions. [2024-10-11 03:02:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-11 03:02:16,922 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:16,922 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:16,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 03:02:17,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 03:02:17,123 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:17,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:17,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1908192695, now seen corresponding path program 5 times [2024-10-11 03:02:17,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:17,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099218138] [2024-10-11 03:02:17,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:17,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:17,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 03:02:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 42 proven. 135 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-10-11 03:02:17,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:17,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099218138] [2024-10-11 03:02:17,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099218138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:17,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376428743] [2024-10-11 03:02:17,536 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 03:02:17,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:17,539 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:02:17,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 03:02:17,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-10-11 03:02:17,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 03:02:17,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 03:02:17,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 123 proven. 50 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2024-10-11 03:02:17,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 123 proven. 60 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2024-10-11 03:02:18,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376428743] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:18,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:18,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2024-10-11 03:02:18,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508972876] [2024-10-11 03:02:18,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:18,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-11 03:02:18,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:18,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-11 03:02:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2024-10-11 03:02:18,329 INFO L87 Difference]: Start difference. First operand 62 states and 84 transitions. Second operand has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 13 states have call successors, (22), 2 states have call predecessors, (22), 9 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2024-10-11 03:02:18,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:18,614 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2024-10-11 03:02:18,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 03:02:18,615 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 13 states have call successors, (22), 2 states have call predecessors, (22), 9 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) Word has length 91 [2024-10-11 03:02:18,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:18,616 INFO L225 Difference]: With dead ends: 74 [2024-10-11 03:02:18,616 INFO L226 Difference]: Without dead ends: 70 [2024-10-11 03:02:18,617 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 194 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=251, Invalid=1155, Unknown=0, NotChecked=0, Total=1406 [2024-10-11 03:02:18,618 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:18,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 99 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 03:02:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-10-11 03:02:18,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-10-11 03:02:18,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (32), 19 states have call predecessors, (32), 17 states have call successors, (32) [2024-10-11 03:02:18,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2024-10-11 03:02:18,633 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 91 [2024-10-11 03:02:18,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:18,634 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2024-10-11 03:02:18,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 states have internal predecessors, (45), 13 states have call successors, (22), 2 states have call predecessors, (22), 9 states have return successors, (21), 9 states have call predecessors, (21), 13 states have call successors, (21) [2024-10-11 03:02:18,634 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2024-10-11 03:02:18,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-11 03:02:18,635 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:18,636 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:18,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 03:02:18,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:18,837 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:18,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:18,837 INFO L85 PathProgramCache]: Analyzing trace with hash 768848125, now seen corresponding path program 6 times [2024-10-11 03:02:18,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:18,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390644744] [2024-10-11 03:02:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:18,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 03:02:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 20 proven. 163 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2024-10-11 03:02:19,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:19,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390644744] [2024-10-11 03:02:19,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390644744] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:19,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199459119] [2024-10-11 03:02:19,920 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 03:02:19,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:19,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:19,922 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:02:19,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 03:02:20,038 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-10-11 03:02:20,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 03:02:20,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-10-11 03:02:20,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-10-11 03:02:20,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-11 03:02:21,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199459119] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:21,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:21,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 32] total 53 [2024-10-11 03:02:21,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907886443] [2024-10-11 03:02:21,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:21,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-11 03:02:21,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:21,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-11 03:02:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2555, Unknown=0, NotChecked=0, Total=2756 [2024-10-11 03:02:21,581 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 53 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 40 states have internal predecessors, (70), 16 states have call successors, (26), 11 states have call predecessors, (26), 26 states have return successors, (35), 26 states have call predecessors, (35), 16 states have call successors, (35) [2024-10-11 03:02:25,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:25,034 INFO L93 Difference]: Finished difference Result 221 states and 322 transitions. [2024-10-11 03:02:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-10-11 03:02:25,035 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 40 states have internal predecessors, (70), 16 states have call successors, (26), 11 states have call predecessors, (26), 26 states have return successors, (35), 26 states have call predecessors, (35), 16 states have call successors, (35) Word has length 97 [2024-10-11 03:02:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:25,038 INFO L225 Difference]: With dead ends: 221 [2024-10-11 03:02:25,038 INFO L226 Difference]: Without dead ends: 217 [2024-10-11 03:02:25,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3371 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1726, Invalid=11614, Unknown=0, NotChecked=0, Total=13340 [2024-10-11 03:02:25,041 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 337 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:25,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 460 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-11 03:02:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-10-11 03:02:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 178. [2024-10-11 03:02:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 96 states have internal predecessors, (104), 47 states have call successors, (47), 27 states have call predecessors, (47), 33 states have return successors, (104), 54 states have call predecessors, (104), 47 states have call successors, (104) [2024-10-11 03:02:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 255 transitions. [2024-10-11 03:02:25,082 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 255 transitions. Word has length 97 [2024-10-11 03:02:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:25,083 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 255 transitions. [2024-10-11 03:02:25,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 40 states have internal predecessors, (70), 16 states have call successors, (26), 11 states have call predecessors, (26), 26 states have return successors, (35), 26 states have call predecessors, (35), 16 states have call successors, (35) [2024-10-11 03:02:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 255 transitions. [2024-10-11 03:02:25,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-11 03:02:25,085 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:25,086 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:25,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 03:02:25,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:25,286 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:25,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:25,287 INFO L85 PathProgramCache]: Analyzing trace with hash 489586039, now seen corresponding path program 7 times [2024-10-11 03:02:25,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:25,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794825417] [2024-10-11 03:02:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:25,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 03:02:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 42 proven. 150 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-10-11 03:02:25,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:25,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794825417] [2024-10-11 03:02:25,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794825417] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:25,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299066591] [2024-10-11 03:02:25,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 03:02:25,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:25,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:25,741 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:02:25,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 03:02:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:25,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 03:02:25,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 48 proven. 138 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2024-10-11 03:02:25,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 48 proven. 156 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-10-11 03:02:26,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299066591] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:26,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:26,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 28 [2024-10-11 03:02:26,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756598361] [2024-10-11 03:02:26,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:26,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 03:02:26,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:26,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 03:02:26,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2024-10-11 03:02:26,894 INFO L87 Difference]: Start difference. First operand 178 states and 255 transitions. Second operand has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 15 states have call successors, (23), 2 states have call predecessors, (23), 11 states have return successors, (25), 9 states have call predecessors, (25), 15 states have call successors, (25) [2024-10-11 03:02:27,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:27,355 INFO L93 Difference]: Finished difference Result 290 states and 469 transitions. [2024-10-11 03:02:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 03:02:27,355 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 15 states have call successors, (23), 2 states have call predecessors, (23), 11 states have return successors, (25), 9 states have call predecessors, (25), 15 states have call successors, (25) Word has length 103 [2024-10-11 03:02:27,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:27,357 INFO L225 Difference]: With dead ends: 290 [2024-10-11 03:02:27,357 INFO L226 Difference]: Without dead ends: 180 [2024-10-11 03:02:27,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 218 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=352, Invalid=1628, Unknown=0, NotChecked=0, Total=1980 [2024-10-11 03:02:27,360 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:27,360 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 191 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 03:02:27,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-10-11 03:02:27,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 156. [2024-10-11 03:02:27,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 45 states have call successors, (45), 22 states have call predecessors, (45), 29 states have return successors, (88), 52 states have call predecessors, (88), 45 states have call successors, (88) [2024-10-11 03:02:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 219 transitions. [2024-10-11 03:02:27,392 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 219 transitions. Word has length 103 [2024-10-11 03:02:27,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:27,392 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 219 transitions. [2024-10-11 03:02:27,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 15 states have call successors, (23), 2 states have call predecessors, (23), 11 states have return successors, (25), 9 states have call predecessors, (25), 15 states have call successors, (25) [2024-10-11 03:02:27,393 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 219 transitions. [2024-10-11 03:02:27,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-10-11 03:02:27,397 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:27,397 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:27,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 03:02:27,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:27,598 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:27,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash 635206909, now seen corresponding path program 8 times [2024-10-11 03:02:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:27,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594486360] [2024-10-11 03:02:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:27,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:27,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 03:02:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:02:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:28,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 107 proven. 410 refuted. 0 times theorem prover too weak. 1567 trivial. 0 not checked. [2024-10-11 03:02:28,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:28,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594486360] [2024-10-11 03:02:28,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594486360] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:28,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099958454] [2024-10-11 03:02:28,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 03:02:28,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:28,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:28,322 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:02:28,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 03:02:28,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 03:02:28,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 03:02:28,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 03:02:28,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 115 proven. 396 refuted. 0 times theorem prover too weak. 1573 trivial. 0 not checked. [2024-10-11 03:02:28,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 115 proven. 416 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2024-10-11 03:02:29,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099958454] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:29,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:29,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 28 [2024-10-11 03:02:29,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546453525] [2024-10-11 03:02:29,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:29,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-11 03:02:29,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:29,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-11 03:02:29,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2024-10-11 03:02:29,709 INFO L87 Difference]: Start difference. First operand 156 states and 219 transitions. Second operand has 28 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) [2024-10-11 03:02:30,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:30,182 INFO L93 Difference]: Finished difference Result 239 states and 360 transitions. [2024-10-11 03:02:30,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 03:02:30,183 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) Word has length 177 [2024-10-11 03:02:30,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:30,186 INFO L225 Difference]: With dead ends: 239 [2024-10-11 03:02:30,186 INFO L226 Difference]: Without dead ends: 169 [2024-10-11 03:02:30,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 396 SyntacticMatches, 9 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=362, Invalid=1708, Unknown=0, NotChecked=0, Total=2070 [2024-10-11 03:02:30,188 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:30,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 131 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 03:02:30,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-10-11 03:02:30,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 156. [2024-10-11 03:02:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 45 states have call successors, (45), 23 states have call predecessors, (45), 28 states have return successors, (81), 50 states have call predecessors, (81), 45 states have call successors, (81) [2024-10-11 03:02:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 213 transitions. [2024-10-11 03:02:30,222 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 213 transitions. Word has length 177 [2024-10-11 03:02:30,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:30,222 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 213 transitions. [2024-10-11 03:02:30,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 26 states have internal predecessors, (52), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) [2024-10-11 03:02:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 213 transitions. [2024-10-11 03:02:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-10-11 03:02:30,225 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:30,225 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:30,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 03:02:30,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 03:02:30,427 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:30,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:30,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1718503799, now seen corresponding path program 9 times [2024-10-11 03:02:30,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:30,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581753930] [2024-10-11 03:02:30,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:30,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:31,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:32,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:32,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 03:02:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:32,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:02:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 44 proven. 707 refuted. 0 times theorem prover too weak. 1349 trivial. 0 not checked. [2024-10-11 03:02:33,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:33,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581753930] [2024-10-11 03:02:33,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581753930] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:33,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651536407] [2024-10-11 03:02:33,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 03:02:33,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:33,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:33,342 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:02:33,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 03:02:33,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-10-11 03:02:33,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 03:02:33,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 175 conjuncts are in the unsatisfiable core [2024-10-11 03:02:33,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2024-10-11 03:02:34,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-11 03:02:37,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651536407] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:37,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:37,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 58] total 85 [2024-10-11 03:02:37,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771924929] [2024-10-11 03:02:37,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:37,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2024-10-11 03:02:37,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:37,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2024-10-11 03:02:37,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=6821, Unknown=0, NotChecked=0, Total=7140 [2024-10-11 03:02:37,258 INFO L87 Difference]: Start difference. First operand 156 states and 213 transitions. Second operand has 85 states, 67 states have (on average 1.626865671641791) internal successors, (109), 64 states have internal predecessors, (109), 29 states have call successors, (43), 19 states have call predecessors, (43), 42 states have return successors, (56), 43 states have call predecessors, (56), 29 states have call successors, (56) [2024-10-11 03:02:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:02:56,738 INFO L93 Difference]: Finished difference Result 523 states and 791 transitions. [2024-10-11 03:02:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2024-10-11 03:02:56,739 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 67 states have (on average 1.626865671641791) internal successors, (109), 64 states have internal predecessors, (109), 29 states have call successors, (43), 19 states have call predecessors, (43), 42 states have return successors, (56), 43 states have call predecessors, (56), 29 states have call successors, (56) Word has length 183 [2024-10-11 03:02:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:02:56,744 INFO L225 Difference]: With dead ends: 523 [2024-10-11 03:02:56,744 INFO L226 Difference]: Without dead ends: 519 [2024-10-11 03:02:56,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16661 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=7781, Invalid=50541, Unknown=0, NotChecked=0, Total=58322 [2024-10-11 03:02:56,754 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 1545 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 3166 mSolverCounterSat, 3386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 6552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3386 IncrementalHoareTripleChecker+Valid, 3166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-11 03:02:56,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 897 Invalid, 6552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3386 Valid, 3166 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-11 03:02:56,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2024-10-11 03:02:56,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 436. [2024-10-11 03:02:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 235 states have (on average 1.0595744680851065) internal successors, (249), 231 states have internal predecessors, (249), 125 states have call successors, (125), 74 states have call predecessors, (125), 75 states have return successors, (256), 130 states have call predecessors, (256), 125 states have call successors, (256) [2024-10-11 03:02:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 630 transitions. [2024-10-11 03:02:56,834 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 630 transitions. Word has length 183 [2024-10-11 03:02:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:02:56,835 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 630 transitions. [2024-10-11 03:02:56,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 67 states have (on average 1.626865671641791) internal successors, (109), 64 states have internal predecessors, (109), 29 states have call successors, (43), 19 states have call predecessors, (43), 42 states have return successors, (56), 43 states have call predecessors, (56), 29 states have call successors, (56) [2024-10-11 03:02:56,836 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 630 transitions. [2024-10-11 03:02:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-10-11 03:02:56,840 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:02:56,841 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:02:56,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 03:02:57,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 03:02:57,045 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:02:57,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:02:57,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1881135043, now seen corresponding path program 10 times [2024-10-11 03:02:57,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:02:57,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919566282] [2024-10-11 03:02:57,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:02:57,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:02:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 03:02:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:02:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:02:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:02:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:02:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:02:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:02:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 107 proven. 431 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2024-10-11 03:02:57,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:02:57,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919566282] [2024-10-11 03:02:57,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919566282] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:02:57,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044831904] [2024-10-11 03:02:57,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 03:02:57,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:02:57,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:02:57,708 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:02:57,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 03:02:57,894 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 03:02:57,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 03:02:57,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 03:02:57,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:02:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 115 proven. 415 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2024-10-11 03:02:58,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:02:59,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 115 proven. 447 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2024-10-11 03:02:59,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044831904] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:02:59,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:02:59,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 32 [2024-10-11 03:02:59,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649763325] [2024-10-11 03:02:59,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:02:59,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-11 03:02:59,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:02:59,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-11 03:02:59,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2024-10-11 03:02:59,502 INFO L87 Difference]: Start difference. First operand 436 states and 630 transitions. Second operand has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) [2024-10-11 03:03:00,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:03:00,017 INFO L93 Difference]: Finished difference Result 682 states and 1087 transitions. [2024-10-11 03:03:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 03:03:00,017 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) Word has length 189 [2024-10-11 03:03:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:03:00,025 INFO L225 Difference]: With dead ends: 682 [2024-10-11 03:03:00,025 INFO L226 Difference]: Without dead ends: 466 [2024-10-11 03:03:00,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 420 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=484, Invalid=2272, Unknown=0, NotChecked=0, Total=2756 [2024-10-11 03:03:00,029 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 03:03:00,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 177 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 03:03:00,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-10-11 03:03:00,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 393. [2024-10-11 03:03:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 200 states have (on average 1.06) internal successors, (212), 200 states have internal predecessors, (212), 119 states have call successors, (119), 59 states have call predecessors, (119), 73 states have return successors, (219), 133 states have call predecessors, (219), 119 states have call successors, (219) [2024-10-11 03:03:00,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 550 transitions. [2024-10-11 03:03:00,102 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 550 transitions. Word has length 189 [2024-10-11 03:03:00,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:03:00,102 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 550 transitions. [2024-10-11 03:03:00,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) [2024-10-11 03:03:00,103 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 550 transitions. [2024-10-11 03:03:00,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2024-10-11 03:03:00,108 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:03:00,108 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 24, 23, 23, 23, 23, 23, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:03:00,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 03:03:00,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 03:03:00,313 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:03:00,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:03:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1565835639, now seen corresponding path program 11 times [2024-10-11 03:03:00,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:03:00,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596673546] [2024-10-11 03:03:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:03:00,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:03:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:00,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:00,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:00,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,112 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:03:01,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 03:03:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:03:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:03:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:03:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-10-11 03:03:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 640 proven. 804 refuted. 0 times theorem prover too weak. 3416 trivial. 0 not checked. [2024-10-11 03:03:01,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:03:01,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596673546] [2024-10-11 03:03:01,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596673546] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:03:01,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848221523] [2024-10-11 03:03:01,354 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 03:03:01,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:03:01,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:03:01,356 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:03:01,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 03:03:01,654 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2024-10-11 03:03:01,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 03:03:01,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 03:03:01,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:03:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 868 proven. 595 refuted. 0 times theorem prover too weak. 3397 trivial. 0 not checked. [2024-10-11 03:03:01,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:03:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4860 backedges. 870 proven. 619 refuted. 0 times theorem prover too weak. 3371 trivial. 0 not checked. [2024-10-11 03:03:03,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848221523] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:03:03,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:03:03,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 21] total 27 [2024-10-11 03:03:03,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919606158] [2024-10-11 03:03:03,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:03:03,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-11 03:03:03,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:03:03,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-11 03:03:03,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2024-10-11 03:03:03,409 INFO L87 Difference]: Start difference. First operand 393 states and 550 transitions. Second operand has 27 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 20 states have call successors, (37), 3 states have call predecessors, (37), 12 states have return successors, (40), 13 states have call predecessors, (40), 20 states have call successors, (40) [2024-10-11 03:03:03,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:03:03,826 INFO L93 Difference]: Finished difference Result 569 states and 837 transitions. [2024-10-11 03:03:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-11 03:03:03,826 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 20 states have call successors, (37), 3 states have call predecessors, (37), 12 states have return successors, (40), 13 states have call predecessors, (40), 20 states have call successors, (40) Word has length 263 [2024-10-11 03:03:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:03:03,830 INFO L225 Difference]: With dead ends: 569 [2024-10-11 03:03:03,830 INFO L226 Difference]: Without dead ends: 463 [2024-10-11 03:03:03,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 604 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=644, Invalid=2008, Unknown=0, NotChecked=0, Total=2652 [2024-10-11 03:03:03,832 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 54 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 03:03:03,832 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 108 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 03:03:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-10-11 03:03:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 390. [2024-10-11 03:03:03,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 199 states have (on average 1.0603015075376885) internal successors, (211), 199 states have internal predecessors, (211), 119 states have call successors, (119), 60 states have call predecessors, (119), 71 states have return successors, (203), 130 states have call predecessors, (203), 119 states have call successors, (203) [2024-10-11 03:03:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 533 transitions. [2024-10-11 03:03:03,898 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 533 transitions. Word has length 263 [2024-10-11 03:03:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:03:03,899 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 533 transitions. [2024-10-11 03:03:03,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 20 states have call successors, (37), 3 states have call predecessors, (37), 12 states have return successors, (40), 13 states have call predecessors, (40), 20 states have call successors, (40) [2024-10-11 03:03:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 533 transitions. [2024-10-11 03:03:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2024-10-11 03:03:03,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:03:03,904 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:03:03,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 03:03:04,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:03:04,109 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:03:04,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:03:04,109 INFO L85 PathProgramCache]: Analyzing trace with hash 211607927, now seen corresponding path program 12 times [2024-10-11 03:03:04,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:03:04,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344138086] [2024-10-11 03:03:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:03:04,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:03:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:03:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 03:03:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:04,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:03:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:04,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:03:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:03:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 03:03:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:03:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-10-11 03:03:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:05,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 244 proven. 1105 refuted. 0 times theorem prover too weak. 7423 trivial. 0 not checked. [2024-10-11 03:03:05,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:03:05,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344138086] [2024-10-11 03:03:05,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344138086] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:03:05,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610542655] [2024-10-11 03:03:05,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 03:03:05,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:03:05,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:03:05,208 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:03:05,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 03:03:05,444 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-10-11 03:03:05,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 03:03:05,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-11 03:03:05,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:03:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 475 proven. 865 refuted. 0 times theorem prover too weak. 7432 trivial. 0 not checked. [2024-10-11 03:03:05,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:03:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 479 proven. 896 refuted. 0 times theorem prover too weak. 7397 trivial. 0 not checked. [2024-10-11 03:03:07,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610542655] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:03:07,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:03:07,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 32 [2024-10-11 03:03:07,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602276894] [2024-10-11 03:03:07,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:03:07,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-11 03:03:07,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:03:07,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-11 03:03:07,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2024-10-11 03:03:07,536 INFO L87 Difference]: Start difference. First operand 390 states and 533 transitions. Second operand has 32 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2024-10-11 03:03:08,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:03:08,180 INFO L93 Difference]: Finished difference Result 426 states and 576 transitions. [2024-10-11 03:03:08,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 03:03:08,181 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) Word has length 343 [2024-10-11 03:03:08,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:03:08,185 INFO L225 Difference]: With dead ends: 426 [2024-10-11 03:03:08,185 INFO L226 Difference]: Without dead ends: 422 [2024-10-11 03:03:08,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 790 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=494, Invalid=2368, Unknown=0, NotChecked=0, Total=2862 [2024-10-11 03:03:08,188 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 40 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 03:03:08,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 156 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 03:03:08,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-10-11 03:03:08,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 393. [2024-10-11 03:03:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 201 states have (on average 1.0597014925373134) internal successors, (213), 201 states have internal predecessors, (213), 119 states have call successors, (119), 60 states have call predecessors, (119), 72 states have return successors, (204), 131 states have call predecessors, (204), 119 states have call successors, (204) [2024-10-11 03:03:08,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 536 transitions. [2024-10-11 03:03:08,259 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 536 transitions. Word has length 343 [2024-10-11 03:03:08,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:03:08,260 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 536 transitions. [2024-10-11 03:03:08,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.903225806451613) internal successors, (59), 30 states have internal predecessors, (59), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2024-10-11 03:03:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 536 transitions. [2024-10-11 03:03:08,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-10-11 03:03:08,266 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:03:08,266 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:03:08,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 03:03:08,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 03:03:08,467 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:03:08,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:03:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash 247251005, now seen corresponding path program 13 times [2024-10-11 03:03:08,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:03:08,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509209566] [2024-10-11 03:03:08,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:03:08,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:03:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:10,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:12,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:03:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 03:03:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:03:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:13,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-11 03:03:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:03:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-11 03:03:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-11 03:03:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:14,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 03:03:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 03:03:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-10-11 03:03:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 03:03:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 92 proven. 2942 refuted. 0 times theorem prover too weak. 5760 trivial. 0 not checked. [2024-10-11 03:03:15,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:03:15,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509209566] [2024-10-11 03:03:15,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509209566] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:03:15,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502216130] [2024-10-11 03:03:15,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 03:03:15,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:03:15,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:03:15,242 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:03:15,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 03:03:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:03:15,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 339 conjuncts are in the unsatisfiable core [2024-10-11 03:03:15,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:03:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 2940 refuted. 0 times theorem prover too weak. 5854 trivial. 0 not checked. [2024-10-11 03:03:16,262 INFO L311 TraceCheckSpWp]: Computing backward predicates...